阅读说明：本技术 一种流体管理主机及相关系统 (Fluid management host and related system ) 是由 楼亭 营亚 高明 肖超妮 于 2021-07-21 设计创作，主要内容包括：本发明公开了一种流体管理主机及相关系统,该流体管理主机可以包括：主机壳体,设置于主机壳体内的主控板和抽吸泵组；主机壳体上设置有用于外接集液容器的抽吸接口和用于外接称重传感器的称量信号接口；抽吸泵组与主控板电连接,并连接抽吸接口,用于执行接收到的抽吸控制指令；主控板与称量信号接口电连接,用于通过称量信号接口接收称重传感器获取的注液容器的注液量和集液容器的出液量,根据注液量和/或出液量生成抽吸控制指令,并发送给抽吸泵组。本发明提供的流体管理主机,在宫腔手术过程中能够实时监控注入宫腔内的流体的注液量和抽吸出的流体的出液量,有助于实时监控膨宫液等流体出液量以及早识别流体的注液量,实现流体的自动监控。(The invention discloses a fluid management host and a related system, wherein the fluid management host can comprise: the main machine shell is arranged on a main control board and a suction pump set in the main machine shell; a suction interface for externally connecting a liquid collecting container and a weighing signal interface for externally connecting a weighing sensor are arranged on the main machine shell; the suction pump group is electrically connected with the main control board, is connected with the suction interface and is used for executing the received suction control command; the main control board is electrically connected with the weighing signal interface and used for receiving the liquid injection amount of the liquid injection container and the liquid discharge amount of the liquid collection container, which are acquired by the weighing sensor, through the weighing signal interface, generating a suction control instruction according to the liquid injection amount and/or the liquid discharge amount, and sending the suction control instruction to the suction pump set. The fluid management host provided by the invention can monitor the liquid injection amount of the fluid injected into the uterine cavity and the liquid discharge amount of the pumped fluid in real time in the uterine cavity operation process, is beneficial to monitoring the liquid discharge amount of the fluids such as uterine swelling fluid and the like in real time and identifying the liquid injection amount of the fluids early, and realizes the automatic monitoring of the fluids.)

1. A fluid management host, comprising: the main machine shell is arranged on a main control board and a suction pump set in the main machine shell;

a suction interface for externally connecting a liquid collecting container and a weighing signal interface for externally connecting a weighing sensor are arranged on the main machine shell;

the suction pump group is electrically connected with the main control board, is connected with the suction interface and is used for executing the received suction control command;

the main control board is electrically connected with the weighing signal interface and is used for receiving the liquid injection amount of the liquid injection container and the liquid discharge amount of the liquid collection container, which are acquired by the weighing sensor, through the weighing signal interface, generating a suction control instruction according to the liquid injection amount and/or the liquid discharge amount, and sending the suction control instruction to the suction pump set.

2. The fluid management host of claim 1, wherein the master board is configured to generate at least one of the following pumping control commands:

generating a suction control instruction for controlling the starting of the suction pump group according to the liquid injection amount and a preset liquid injection amount threshold;

generating a suction control command for controlling the suction pump group to stop according to the liquid outlet amount and the capacity of the liquid collecting container;

generating a suction control instruction for controlling the suction pump set to stop according to the difference value between the liquid injection amount and the liquid discharge amount;

generating a suction control instruction for controlling the suction pump group to stop according to the liquid injection amount, the liquid outlet amount, a preset compensation amount and a preset deficit amount threshold;

and generating a suction control instruction for regulating and controlling the suction power of the suction pump set according to the liquid injection flow rate corresponding to the liquid injection amount and the liquid outlet flow rate corresponding to the liquid outlet amount.

3. The fluid management host of claim 1, further comprising: a gas sensor; the gas sensor is positioned on a suction pipeline of the suction pump set and is electrically connected with the main control board; the suction pump group is used for detecting the suction force of the suction pump group and sending the suction force to the main control board; accordingly, the method can be used for solving the problems that,

and the main control board is used for generating a suction control instruction according to the suction force and the suction force set value so as to regulate and control the suction power of the suction pump set.

4. The fluid management host of claim 3, wherein the gas sensor is mounted on the master control board; the gas sensor is communicated with the pumping hole of the pumping pump group and the pumping interface through a three-way joint.

5. The fluid management host of claim 3, wherein the suction pump unit comprises at least two sets of suction pumps, one set externally connected to a first fluid collection container connected to a surgical instrument and one set externally connected to a second fluid collection container connected to a collection membrane; accordingly, the method can be used for solving the problems that,

the gas sensor is provided with at least two gas sensors, wherein one gas sensor is used for detecting the suction force of a suction pump externally connected with a first liquid collecting container, and the other gas sensor is used for detecting the suction force of a suction pump externally connected with a second liquid collecting container.

6. The fluid management host of any one of claims 1-5, further comprising a silencer group; the silencer group is communicated with the air outlet of the air pump group.

7. The fluid management host of any one of claims 1-5, further comprising: the system comprises a display screen and a human-computer interaction unit;

the display screen is arranged on the host shell and is electrically connected with the main control panel for displaying information;

the human-computer interaction unit comprises an operation knob, a key input unit or a touch input unit and is electrically connected with the main control panel; accordingly, the method can be used for solving the problems that,

the main control board is also used for acquiring input suction operation information through a man-machine interaction unit, generating a suction control instruction according to the suction operation information and sending the suction control instruction to the suction pump group.

8. The fluid management host of any one of claims 1-5, further comprising: the power supply controller is electrically connected with the main control board;

the power supply controller includes: the power supply mainboard is respectively connected with a power supply filter, a potential balance joint, a power supply switch and a power supply interface connected with the power supply filter of the power supply mainboard;

the power filter, the potential balance connector, the power switch and the power interface are respectively arranged on the host shell, and the power interface is used for externally connecting a power supply.

9. A fluid management system, comprising: a liquid injection amount weighing device connected with the liquid injection container, a liquid outlet amount weighing device connected with the liquid collection container, and the fluid management host machine according to any one of claims 1 to 8;

the liquid injection amount weighing device and the liquid outlet amount weighing device are electrically connected with the main control board through the weighing signal interface, and the liquid collecting container is connected with the suction pump set through the suction interface;

the main control board is used for receiving the liquid injection amount of the liquid injection container obtained by the liquid injection amount weighing device and the liquid discharge amount of the liquid collection container obtained by the liquid discharge amount weighing device, generating a suction control instruction according to the liquid injection amount and/or the liquid discharge amount, and sending the suction control instruction to a suction pump set;

the suction pump set is used for executing the received suction control command.

10. The fluid management system of claim 9 wherein the master board is configured to generate at least one of the following pumping control commands:

generating a suction control instruction for controlling the starting of the suction pump group according to the liquid injection amount and a preset liquid injection amount threshold;

generating a suction control command for controlling the suction pump group to stop according to the liquid outlet amount and the capacity of the liquid collecting container;

generating a suction control instruction for controlling the suction pump set to stop according to the difference value between the liquid injection amount and the liquid discharge amount;

generating a suction control instruction for controlling the suction pump group to stop according to the liquid injection amount, the liquid outlet amount, a preset compensation amount and a preset deficit amount threshold;

and generating a suction control instruction for regulating and controlling the suction power of the suction pump set according to the liquid injection flow rate corresponding to the liquid injection amount and the liquid outlet flow rate corresponding to the liquid outlet amount.

11. A fluid management system, comprising: a frame body and a fluid management host machine according to any one of claims 1-8; the rack body can be loaded with a liquid injection container and a liquid collecting container;

the frame body is provided with a weighing sensor for acquiring the liquid injection amount of the liquid injection container and the liquid outlet amount of the liquid collection container; the weighing sensor is electrically connected with the main control board through the weighing signal interface; the liquid collecting container is connected with the suction pump set through the suction interface;

the main control board is used for generating a suction control instruction according to the liquid injection amount and/or the liquid outlet amount and sending the suction control instruction to a suction pump set;

the suction pump set is used for executing the suction control command.

12. The system of claim 11, wherein the rack further comprises: the liquid collecting device comprises a base assembly, a liquid conveying rod assembly, a hook assembly and a liquid collecting container fixing frame; the load cell includes: a first load cell and a second load cell;

the base assembly includes: the roller mounting device comprises a base, a roller arranged at the bottom of the base and a load mounting rod fixed on the base;

the infusion rod component is arranged in the hollow structure of the load mounting rod;

one end of the first weighing sensor is detachably connected to the infusion rod assembly; the other end is connected with the hook component; the hook assembly is used for hanging a fluid bag;

the second weighing sensor is detachably arranged on the side surface of the load mounting rod;

the liquid collecting container fixing frame is arranged on the second weighing sensor.

13. The system of claim 12, wherein the infusion rod assembly comprises: the infusion device comprises an outer infusion rod arranged in the load mounting rod, an inner infusion rod nested in the outer infusion rod, and a clamping sleeve rotatably nested on the outer surface of the outer infusion rod;

one end of the first weighing sensor is detachably connected to the infusion inner rod.

14. The system of claim 13, wherein the hook assembly comprises: the hook comprises a hook support and a plurality of hooks connected to the hook support;

the hook support is detachably connected to the first weighing sensor.

15. The system of claim 14, wherein the drip receptacle holder comprises: the liquid collecting container comprises a liquid collecting container tray, a connecting column and a tray fixing frame;

the liquid collecting container tray is detachably arranged on the weighing sensor, and the tray fixing frame is connected with the liquid collecting container tray through the connecting column;

and a liquid collecting container positioning groove is formed in the upper surface of the liquid collecting container tray.

16. The system of any one of claims 11-15, wherein there are at least two second load cells; the liquid collecting container comprises: a first liquid collecting container connected with the surgical instrument and a second liquid collecting container connected with the collecting membrane;

wherein, a second weighing sensor is connected with the first liquid collecting container, and a second weighing sensor is connected with the second liquid collecting container.

17. The system of claim 16, further comprising: surgical instruments and/or collection membranes;

the surgical instrument is connected to the first fluid collection container, and the collection membrane is connected to the second fluid collection container.

18. The system of claim 17, further comprising: a power equipment main machine;

the power equipment main machine is electrically connected with the surgical instrument and used for driving the surgical instrument.

19. The system of claim 17, further comprising: a filtration device; the filtering equipment is arranged on the frame body and is respectively connected with the first liquid collecting container and the surgical instrument.

20. The system of any one of claims 11 to 15, further comprising: the uterine cavity endoscope is provided with an instrument channel;

the liquid injection container is connected with the instrument channel through a hose.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a fluid management host and a related system.

Background

In the minimally invasive uterine cavity surgery process, fluid (such as uterine expansion liquid such as normal saline, glucose injection and the like) is needed for uterine expansion and cleaning. The purpose of uterus expansion is to fully expand the uterine cavity, further increase the operation space and provide a good visual field for the operation of the uterine cavity; the cleaning is beneficial to stripping the cut tissue, residue and the like, and is convenient to suck the cut tissue, residue and the like out of the uterine cavity together with the fluid. Under the condition of uterine expansion, the uterine cavity is in a positive pressure state, and fluid for uterine expansion can enter the blood circulation system of a patient through the surgical wound surface of the uterine cavity along with the increase of time. Excessive fluid enters the blood circulation system of a patient, which causes a series of serious complications or clinical symptoms such as overload of body fluid, dilute hyponatremia, water poisoning and the like, and even endangers the life safety of the patient in serious cases.

It is well documented that in healthy patients, the maximum fluid uptake of hypotonic solutions is 1000 ml, that of isotonic solutions is 2500 ml and that of high viscosity solutions is 500 ml. In the prior art, the absorption amount (deficit amount) of a patient is generally obtained by calculating the difference between the injection amount of a fluid injected into a body and the discharge amount of a fluid sucked out and overflowed, and then comparing the absorption amount with an empirical value to judge whether a risk exists in the surgical procedure.

Disclosure of Invention

Based on the knowledge of the prior art, the inventor mostly adopts a collecting device to contain the sucked and/or overflowed fluid in a collecting bucket during the uterine cavity operation, and then places the collecting bucket on an electronic scale for weighing measurement. In the simple collection mode by using the collection barrel, sometimes, because the liquid outlet amount is larger than the volume of the collection barrel, fluid is spilled or overflows when the collection barrel needs to be replaced, and further inaccurate weighing is influenced; moreover, in the process of weighing and dumping through calculation, manual operation is needed for many times, so that the workload is increased, and meanwhile, the data cannot achieve the purpose of real-time monitoring.

In view of the above, the present invention has been developed to provide a fluid management host and related system that overcome or at least partially address the above-identified problems.

In a first aspect, an embodiment of the present invention provides a fluid management host, which may include: the main machine shell is arranged on a main control board and a suction pump set in the main machine shell;

the host machine shell is provided with a suction interface for externally connecting a liquid collecting container and a weighing signal interface for externally connecting a weighing sensor;

the suction pump group is electrically connected with the main control board, is connected with the suction interface and is used for executing the received suction control command;

the main control board is electrically connected with the weighing signal interface and is used for receiving the liquid injection amount of the liquid injection container and the liquid discharge amount of the liquid collection container, which are acquired by the weighing sensor, through the weighing signal interface, generating a suction control instruction according to the liquid injection amount and/or the liquid discharge amount, and sending the suction control instruction to the suction pump set.

Optionally, the main control board is configured to generate at least one of the following pumping control commands:

generating a suction control instruction for controlling the starting of the suction pump group according to the liquid injection amount and a preset liquid injection amount threshold;

generating a suction control command for controlling the suction pump group to stop according to the liquid outlet amount and the capacity of the liquid collecting container;

generating a suction control instruction for controlling the suction pump set to stop according to the difference value between the liquid injection amount and the liquid discharge amount;

generating a suction control instruction for controlling the suction pump group to stop according to the liquid injection amount, the liquid outlet amount, a preset compensation amount and a preset deficit amount threshold;

and generating a suction control instruction for regulating and controlling the suction power of the suction pump set according to the liquid injection flow rate corresponding to the liquid injection amount and the liquid outlet flow rate corresponding to the liquid outlet amount.

Optionally, the fluid management host may further include: a gas sensor; the gas sensor is positioned on a suction pipeline of the suction pump set and is electrically connected with the main control board; the suction pump group is used for detecting the suction force of the suction pump group and sending the suction force to the main control board; accordingly, the method can be used for solving the problems that,

and the main control board is used for generating a suction control instruction according to the suction force and the suction force set value so as to regulate and control the suction power of the suction pump set.

Optionally, the gas sensor is mounted on the main control board; the gas sensor is communicated with the pumping hole of the pumping pump group and the pumping interface through a three-way joint.

Optionally, the suction pump unit may comprise at least two sets of suction pumps, wherein one set is externally connected with a first liquid collecting container connected with a surgical instrument, and the other set is externally connected with a second liquid collecting container connected with a collecting membrane; accordingly, the method can be used for solving the problems that,

the gas sensor is provided with at least two gas sensors, wherein one gas sensor is used for detecting the suction force of a suction pump externally connected with a first liquid collecting container, and the other gas sensor is used for detecting the suction force of a suction pump externally connected with a second liquid collecting container.

Optionally, the fluid management host may further include a muffler group; the silencer group is communicated with the air outlet of the air pump group.

Optionally, the fluid management host may further include: the system comprises a display screen and a human-computer interaction unit;

the display screen is arranged on the host shell and is electrically connected with the main control panel for displaying information;

the human-computer interaction unit comprises an operation knob, a key input unit or a touch input unit and is electrically connected with the main control panel; accordingly, the method can be used for solving the problems that,

the main control board is also used for acquiring input suction operation information through a man-machine interaction unit, generating a suction control instruction according to the suction operation information and sending the suction control instruction to the suction pump group.

Optionally, the fluid management host may further include: the power supply controller is electrically connected with the main control board;

the power supply controller includes: the power supply mainboard is respectively connected with a power supply filter, a potential balance joint, a power supply switch and a power supply interface connected with the power supply filter of the power supply mainboard;

the power filter, the potential balance connector, the power switch and the power interface are respectively arranged in the host shell, and the power interface is used for externally connecting a power supply.

In a second aspect, embodiments of the present invention provide a fluid management system, which may include: a liquid injection amount weighing device connected with the liquid injection container, a liquid outlet amount weighing device connected with the liquid collection container, and the fluid management host machine according to the first aspect;

the liquid injection amount weighing device and the liquid outlet amount weighing device are electrically connected with the main control board through the weighing signal interface, and the liquid collecting container is connected with the suction pump set through the suction interface;

the main control board is used for receiving the liquid injection amount of the liquid injection container obtained by the liquid injection amount weighing device and the liquid discharge amount of the liquid collection container obtained by the liquid discharge amount weighing device, generating a suction control instruction according to the liquid injection amount and/or the liquid discharge amount, and sending the suction control instruction to a suction pump set;

the suction pump set is used for executing the received suction control command.

Optionally, the main control board is configured to generate at least one of the following pumping control commands:

generating a suction control instruction for controlling the suction pump set to start according to the liquid injection amount and a preset liquid injection amount threshold;

generating a suction control command for controlling the suction pump group to stop according to the liquid outlet amount and the capacity of the liquid collecting container;

generating a suction control instruction for controlling the suction pump set to stop according to the difference value between the liquid injection amount and the liquid discharge amount;

generating a suction control instruction for controlling the suction pump set to stop according to the liquid injection amount, the liquid outlet amount, a preset compensation amount and a preset deficit amount;

and generating a suction control instruction for regulating and controlling the suction power of the suction pump set according to the liquid injection flow rate corresponding to the liquid injection amount and the liquid outlet flow rate corresponding to the liquid outlet amount.

In a third aspect, embodiments of the present invention provide a fluid management system, which may include: a frame and a fluid management host as described in the first aspect; the frame body can be loaded with a liquid injection container and a liquid collection container;

the frame body is provided with a weighing sensor for acquiring the liquid injection amount of the liquid injection container and the liquid outlet amount of the liquid collection container; the weighing sensor is electrically connected with the main control board through the weighing signal interface; the liquid collecting container is connected with the suction pump set through the suction interface;

the main control board is used for generating a suction control instruction according to the liquid injection amount and/or the liquid outlet amount and sending the suction control instruction to a suction pump set;

the suction pump set is used for executing the suction control command.

Optionally, the rack body may further include: the liquid collecting device comprises a base assembly, a liquid conveying rod assembly, a hook assembly and a liquid collecting container fixing frame; the load cell includes: a first load cell and a second load cell;

the base assembly includes: the roller mounting device comprises a base, a roller arranged at the bottom of the base and a load mounting rod fixed on the base;

the infusion rod component is arranged in the hollow structure of the load mounting rod;

one end of the first weighing sensor is detachably connected to the infusion rod assembly; the other end is connected with the hook component; the hook assembly is used for hanging a fluid bag;

the second weighing sensor is detachably arranged on the side surface of the load mounting rod;

the liquid collecting container fixing frame is arranged on the second weighing sensor.

Optionally, the infusion rod assembly may comprise: the infusion device comprises an outer infusion rod arranged in the load mounting rod, an inner infusion rod nested in the outer infusion rod, and a clamping sleeve rotatably nested on the outer surface of the outer infusion rod;

one end of the first weighing sensor is detachably connected to the infusion inner rod.

Optionally, the hook assembly may include: the hook comprises a hook support and a plurality of hooks connected to the hook support;

the hook support is detachably connected to the first weighing sensor.

Optionally, the liquid collecting container fixing frame may include: the liquid collecting container comprises a liquid collecting container tray, a connecting column and a tray fixing frame;

the liquid collecting container tray is detachably arranged on the weighing sensor, and the tray fixing frame is connected with the liquid collecting container tray through the connecting column;

and a liquid collecting container positioning groove is formed in the upper surface of the liquid collecting container tray.

Optionally, at least two second weighing sensors may be provided; the liquid collecting container comprises: a first liquid collecting container connected with the surgical instrument and a second liquid collecting container connected with the collecting membrane;

wherein, a second weighing sensor is connected with the first liquid collecting container, and a second weighing sensor is connected with the second liquid collecting container.

Optionally, the system may further include: surgical instruments and/or collection membranes;

the surgical instrument is connected to the first liquid collection container, and the collection membrane is connected to the second liquid collection container.

Optionally, the system may further include: a power equipment main machine;

the power equipment main machine is electrically connected with the surgical instrument and used for driving the surgical instrument.

Optionally, the system may further include: a filtration device; the filtering equipment is arranged on the frame body and is respectively connected with the first liquid collecting container and the surgical instrument.

Optionally, the system may further include: the uterine cavity endoscope is provided with an instrument channel;

the liquid injection container is connected with the instrument channel through a hose.

The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:

the embodiment of the invention provides a fluid management host and a related system, wherein the fluid management host comprises: the main machine shell is arranged on a main control board and a suction pump set in the main machine shell; a suction interface for externally connecting a liquid collecting container and a weighing signal interface for externally connecting a weighing sensor are arranged on the main machine shell; the suction pump group is electrically connected with the main control board, is connected with the suction interface and is used for executing the received suction control command; the main control board is electrically connected with the weighing signal interface and used for receiving the liquid injection amount of the liquid injection container and the liquid discharge amount of the liquid collection container, which are acquired by the weighing sensor, through the weighing signal interface, generating a suction control instruction according to the liquid injection amount and/or the liquid discharge amount, and sending the suction control instruction to the suction pump set. The fluid management host provided by the embodiment of the invention can monitor the liquid injection amount of the fluid (such as uterine distention fluid) injected into the uterine cavity and the liquid output amount of the fluid sucked out in real time in the uterine cavity operation process. Compared with a mode of collecting and recalculating by using a collecting barrel in the prior art, the fluid management host provided by the embodiment of the invention can quickly monitor data, is beneficial to monitoring the liquid outlet amount of fluid such as uterine distention fluid and the like in real time and identifying the liquid injection amount of the fluid early, and realizes automatic monitoring of the fluid.

Further, the fluid management host provided in this embodiment is applied to a hysteroscope operation, in particular, a hysteroscope planing operation, and an electric negative pressure suction device is required to suction a uterine distention fluid and/or a cut pathological tissue such as a myoma and a polyp in a uterine cavity. The above-mentioned fluid management host computer that this embodiment provided has realized the effect of suction and fluid flow synchronous management, and then has practiced thrift operation space, the medical personnel of being convenient for fast operation. Furthermore, the fluid management host in the embodiment provides a convenient management mode for the use of the uterine expansion fluid in the hysteroscope operation, and carries out real-time effective statistics on the real-time injection and extraction of the uterine expansion fluid in the minimally invasive uterine cavity operation under the hysteroscope of the gynecology, so that a user (medical staff) can timely know how much uterine expansion fluid is possibly absorbed by the human body, and the early warning function is realized.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a fluid management host according to embodiment 1 of the present invention;

fig. 2A is a schematic view of an overall structure of a fluid management host according to embodiment 1 of the present invention;

FIG. 2B is another schematic view of the angle structure of FIG. 2A;

fig. 3A is a schematic diagram of an internal structure of a fluid management host according to embodiment 1 of the present invention;

FIG. 3B is another schematic view of the angular structure of FIG. 3A;

fig. 4 is a schematic structural diagram of a fluid management system provided in embodiment 2 of the present invention;

fig. 5 is a schematic diagram illustrating an overall structure of a fluid management system provided in embodiment 3 of the present invention;

fig. 6 is a schematic diagram illustrating an overall structure of a fluid management system provided in embodiment 3 of the present invention;

fig. 7 is a schematic structural diagram of a fluid management system frame provided in embodiment 3 of the present invention;

FIG. 8 is a schematic diagram of the exploded structure of FIG. 7;

wherein 100 the fluid management host; 200 liquid injection amount weighing equipment; 300 liquid output weighing equipment; 400 of a frame body; 500 liquid injection containers; 600 liquid collecting container; 700 a surgical instrument; 800 power equipment main machine; 900 a filtration device;

11 a main machine housing; 12 a main control board; 13 a suction pump group; 14 a power supply controller; 15 a gas sensor; 16 muffler groups; 17 a display screen; 18 a human-computer interaction unit;

111 a suction interface; 112 weighing signal interface; 131 a first suction pump; 132 a second suction pump; 133 a third suction pump; 141 power supply main board; a 142 power supply filter; 143 a potential balancing connector; 144 a power switch; 145 power source interface; 151 a first gas sensor; 152 a second gas sensor; 161 a first muffler; 162 a second muffler; 163 third silencer;

410 a first load cell; 420 a second load cell; 430 a base assembly; 440 an infusion rod assembly; 450 a hook assembly; 460 a liquid collecting container fixing frame;

431 a base; 432 a roller; 433 load mounting bar; 441 outer infusion rod; 442 an infusion inner rod; 443 clamping sleeve; 451 hook brackets; 452 hook; 461 liquid trap tray; 462 connecting column; 463 a tray holder; 610 a first liquid collection container; 620 second liquid collection container.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "far", "near", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Embodiment 1 of the present invention provides a fluid management host, which may be used in minimally invasive surgeries such as uterine cavity and urology surgery, and the function of the fluid management host is mainly to manage and control fluid injected into the cavities such as uterine cavity, and as shown in fig. 1 to 3B, the fluid management host 100 may include: a main machine housing 11, a main control panel 12 and a suction pump group 13 arranged in the main machine housing 11; a suction interface 111 for externally connecting a liquid collecting container and a weighing signal interface 112 for externally connecting a weighing sensor are arranged on the main machine shell 11;

the suction pump group 13 is electrically connected with the main control panel 12, is connected with the suction interface 111, and is used for executing a received suction control command, namely controlling the suction force of a liquid collecting container externally connected through the suction interface 111;

the main control board 12 is electrically connected to the weighing signal interface 112, and is configured to receive the liquid injection amount of the liquid injection container and/or the liquid discharge amount of the liquid collection container obtained by the weighing sensor through the weighing signal interface 112, generate a suction control instruction according to the liquid injection amount and the liquid discharge amount, and send the suction control instruction to the suction pump group 13.

It should be noted that the above-mentioned pumping control command in the embodiment of the present invention may include, but is not limited to, the following commands: start suction command, stop suction command, adjust suction force command for suction, adjust suction time command, etc. It should be noted that, the above-mentioned controlling the suction force of the liquid collecting container externally connected through the suction interface may be controlling the suction force to be zero (i.e. stopping suction), adjusting the magnitude of the suction force, and the suction force may be from zero to a preset value (starting suction), and the like, and the embodiment of the present invention is not limited in this respect.

The fluid management host provided by the embodiment of the invention can monitor the liquid injection amount of the fluid (such as uterine distention fluid) injected into the uterine cavity and the liquid outlet amount of the fluid sucked out in real time in the uterine cavity operation process, and outputs a suction control instruction to control the suction pump set so as to control the suction force of the liquid collection container externally connected with the suction interface. Compared with a mode of collecting and recalculating by using a collecting barrel in the prior art, the fluid management host provided by the embodiment of the invention can quickly monitor data, is beneficial to real-time monitoring of the liquid outlet amount of fluid such as uterine distention liquid and the like and early identification of the liquid injection amount of the fluid, and realizes automatic monitoring of the fluid.

Further, the fluid management host provided in this embodiment is applied to a hysteroscope operation, in particular, a hysteroscope planing operation, and an electric negative pressure suction device is required to suction a uterine distention fluid and/or a cut pathological tissue such as a myoma and a polyp in a uterine cavity. The above-mentioned fluid management host computer that this embodiment provided has realized the effect of suction and fluid flow synchronous management, and then has practiced thrift operation space, the medical personnel of being convenient for fast operation. Furthermore, the fluid management host in the embodiment provides a convenient management mode for the use of the uterine expansion fluid in the hysteroscope operation, and carries out real-time effective statistics on the real-time injection and extraction of the uterine expansion fluid in the minimally invasive uterine cavity operation under the hysteroscope of the gynecology, so that a user (medical staff) can timely know how much uterine expansion fluid is possibly absorbed by the human body, and the early warning function is realized.

It should be noted that, in order to implement the functions of the fluid management host in this embodiment, as shown in fig. 3A and 3B, the fluid management host in this embodiment further includes: the power controller 14, the power controller 14 is electrically connected with the main control board 12;

the power supply controller 14 may include: a power supply main board 141, a power supply filter 142, a potential balance connector 143, a power supply switch 144 and a power supply interface 145 connected to the power supply filter 142, which are respectively connected to the power supply main board 141; the power filter 142, the potential balance connector 143, the power switch 144 and the power interface 145 are respectively disposed on the main housing 11, and the power interface 145 is used for externally connecting a power supply.

The power supply main board in this embodiment is used for converting AC220V into DC24V, the power supply module is connected to a power supply filter, an overcurrent protection fuse is connected to the power supply filter, and the power supply filter can effectively filter a frequency point of a specific frequency in a power supply line or frequencies other than the frequency point to obtain a power supply signal of the specific frequency or eliminate the power supply signal of the specific frequency. The potential balance joint is used for protecting the fluid management host from being grounded, and this embodiment does not limit this.

In a particular embodiment, the master control board is configured to generate at least one of the following puff control commands:

< suction control instruction 1>

And generating a suction control instruction for controlling the starting of the suction pump group according to the liquid injection amount and a preset liquid injection amount threshold. The preset liquid injection amount threshold in this embodiment may be an amount of uterus expanding liquid required for uterus expansion (for example, 800mL of the threshold may be adjusted according to the size of the uterus expansion, the operation position, and physical signs of different patients), and when it is monitored that the liquid injection amount is greater than the threshold, a suction control instruction for starting suction may be generated, so as to avoid operation risk caused by too much uterus expanding liquid being injected. Of course, the filling valve of the filling container may be closed in this embodiment, and this is not a specific limitation in the embodiment of the present invention.

< suction control instruction 2>

A suction control command for controlling the stop of the suction pump group is generated based on the liquid discharge amount and the capacity of the liquid collecting container. The volume of the liquid collecting container in the embodiment of the invention is fixed, and when the liquid outlet amount is detected to be close to the volume, the suction is required to be stopped so as to avoid overflowing the liquid collecting container or avoid the womb swelling liquid being sucked to the suction pump set to cause the damage of the equipment.

< suction control instruction 3>

And generating a suction control command for controlling the stop of the suction pump group according to the difference value between the liquid injection amount and the liquid discharge amount. In the embodiment, when the liquid output amount is too much and is not enough to meet the requirement of uterus expansion, suction needs to be stopped so as to avoid that the uterus expansion effect cannot be achieved and the operation visual field is influenced.

< suction control instruction 4>

And generating a suction control command for controlling the suction pump group to stop according to the liquid injection amount, the liquid outlet amount, the preset compensation amount and the preset deficit amount threshold value. In this embodiment, the deficit amount is the amount of fluid infusion, the amount of fluid output, and the preset offset amount, and when the deficit amount is greater than the preset deficit threshold value, the patient is likely to have a series of serious complications or clinical symptoms such as dilute hyponatremia and water poisoning, and therefore, the operation needs to be stopped. But the suction is stopped before the injection is stopped, so as to prevent the pressure loss in the uterine cavity.

< suction control instruction 5>

And generating a suction control instruction for regulating and controlling the suction power of the suction pump set according to the liquid injection flow rate corresponding to the liquid injection amount and the liquid outlet flow rate corresponding to the liquid outlet amount. In the embodiment of the invention, because the stripped and cut tissues need to be cleaned in time in the operation process, the uterus swelling liquid in the uterine cavity is ensured to be clear, and the influence on the operation visual field caused by turbidity is avoided, the uterus swelling liquid needs to be continuously pumped to achieve a balance effect. According to the monitored liquid injection flow rate corresponding to the liquid injection amount and liquid outlet flow rate corresponding to the liquid outlet amount, the speed of the liquid injection flow rate and the speed of the liquid outlet flow rate can be judged, and at the moment, the suction power of a suction pump group needs to be regulated and controlled so as to achieve balance of injection and suction.

In an alternative embodiment, also shown with reference to fig. 1, the fluid management host 100 may further include: a gas sensor 15; the gas sensor 15 is positioned on the suction pipeline of the suction pump unit 13 and is electrically connected with the main control board 12; for detecting the suction force of the suction pump unit 13 and transmitting the suction force to the main control board 12; accordingly, the main control board 12 generates a suction control command according to the suction force to control the motor power of the suction pump set 13.

It should be noted that, the gas sensor in this embodiment may be a vacuum negative pressure sensor, the sensor may be capable of measuring an attractive force of the suction pump, and the main control board regulates and controls the power of the motor of the suction pump based on a PWM voltage regulation manner through the measured attractive force and a preset attractive force, so that the attractive force of the suction pump is stabilized within a preset interval range. For example, the preset suction force is 300mmHg, the measured suction force of the suction pump set is 400mmHg, the PWM voltage regulation mode changes the voltage by adjusting the length of the pulse time, and the control value of the suction pump is adjusted in real time according to the difference between the suction force measured by the air pressure sensor and the preset suction force, so that the output power of the motor is stabilized within ± 10% of the preset suction force 300mmHg, that is, the actual suction force is precisely stabilized near the preset suction force.

It should be noted that the gas sensor measures the suction force of the suction pump, and it is understood that the suction force in the pipeline communicated with the suction port of one suction pump is consistent, so in this embodiment, the gas sensor may be located at any position in the pipeline as long as the measured suction force can be sent to the main control board, and this embodiment is not limited in particular.

In a specific embodiment, in order to facilitate sending the detected attraction force to the main control board in time, referring to fig. 3B, the gas sensor 15 is mounted on the main control board 12 in this embodiment; the gas sensor 15 is communicated with the suction opening of the suction pump group 13 and the suction interface 111 through a three-way joint.

In the embodiment, the suction pump, the gas sensor and the suction interface are connected by using the tee joint, so that the suction force of the suction opening of the suction pump can be monitored in real time, and the suction interface can be conveniently and externally connected with a liquid collecting container and the like. It should be noted that, in this embodiment, the three-way joint is connected to the air suction port of the suction pump, and the other two joints of the three-way joint may be respectively connected to the gas sensor and the suction port by flexible connection pipes and extend to one end of the main machine housing.

In a more specific embodiment, as shown with reference to fig. 3A and 3B, the suction pump unit 13 includes at least two sets of suction pumps, one set for externally connecting a first fluid collection container connected to a surgical instrument, and one set for externally connecting a second fluid collection container connected to a collection membrane; accordingly, the method can be used for solving the problems that,

the gas sensor 15 is provided with at least two, wherein one is used for detecting the suction force of a suction pump externally connected with a first liquid collecting container, and the other is used for detecting the suction force of a suction pump externally connected with a second liquid collecting container.

In another alternative embodiment, as shown in fig. 1, 3A and 3B, the fluid management host may further include a muffler stack 16; the muffler stack 16 communicates with the air outlet of the suction pump stack 13.

Muffler group 16 may include at least two mufflers that mate with a suction pump; the air pump is provided with an air outlet, and the silencer is connected to the air outlet of the air pump through a hose.

When the fluid management host in the embodiment of the invention is used as a medical instrument, particularly, noise generated by the suction pump in the operation process has adverse effects on a user (medical staff) and a patient, and in order to minimize the influence of the noise, the air outlet of the suction pump is connected with the silencer to achieve the function of noise elimination. It should be noted that the air outlet of the suction pump in this embodiment may be connected to the sound suppressor through a hose, and this embodiment is not described herein again.

In a more specific embodiment, as shown in fig. 3A and 3B, the above-described suction-pump group 13 in the embodiment of the present invention may include: the first, second, and third suction pumps 131, 132, and 133, the gas sensor 15 may include: the first gas sensor 151 and the second gas sensor 152, and the muffler group 16 may include: a first muffler 161, a second muffler 162, and a third muffler 163. The inventor in the embodiment of the invention fully considers the application range of the suction force of the suction pump during the operation under the hysteroscope, and after a plurality of experiments, the negative pressure suction force of 50-700 mmHg can meet the adsorption force of medical instruments (shavers) (the adsorption force is generally set between 200-400 mmHg in clinical use), but when the fluid overflowing into the hip collecting device is adsorbed, the adsorption force of less than 120mmHg can meet the adsorption requirement. The inventor considers the requirements of the whole cost, the limit value of the suction force required to be reached and the like comprehensively, and then the embodiment adopts three suction pumps with the suction force of about 400mmHg as the power source. Therefore, the use of the medical instrument can be met, and the production cost of the fluid management host machine is saved.

It should be noted that the air outlet of the first suction pump is connected to the first muffler, the air outlet of the second suction pump is connected to the second muffler, and the air outlet of the third suction pump is connected to the third muffler. In this embodiment, any two of the three suction pumps may be connected in series to form a suction pump group, so that the suction force of the suction pump group is in the range of 0 to 800 mmHg. The suction pumps connected in series are connected with a three-way joint and connected with a gas sensor and a suction interface, and the other single suction pump is connected with a three-way joint and connected with another gas sensor and another suction interface.

In another alternative embodiment, as shown in fig. 1 to 3B, the fluid management host may further include: a display screen 17 and a human-computer interaction unit 18; the display screen 17 is arranged on the main machine shell 11 and is electrically connected with the main control board 12 for displaying information;

the human-computer interaction unit can comprise an operation knob, a key input unit or a touch input unit and is electrically connected with the main control panel; accordingly, the method can be used for solving the problems that,

and the main control board 12 is further configured to obtain the input pumping operation information through the human-computer interaction unit, generate a pumping control command according to the pumping operation information, and send the pumping control command to the pumping pump group 13.

The above-mentioned pumping control command in the embodiment of the present invention may refer to the description in the above-mentioned embodiment, and will not be described herein again. The pumping operation information may include: the touch control method includes starting a pumping command, stopping the pumping command, adjusting pumping time, setting a pumping suction force, adjusting a pumping suction force, setting a deficit amount warning value, and the like.

It should be noted that, when the human-computer interaction unit in this embodiment is a touch input unit, the display screen and the touch input unit may be integrally used as a touch display screen, so that human-computer interaction may be achieved, and information may also be displayed.

In this embodiment, the deficit amount is the amount of intra-operative uterine fluid injection — the amount of intra-operative uterine fluid outflow. The data in this embodiment may be human-computer interaction through a display screen, and further, data sent by the main control board is displayed and displayed, for example, monitoring data such as a real-time deficit value and a real-time attraction value or dynamic data is displayed. Compared with the mode that the electric suction apparatus mostly uses the mechanical pointer form to display in the prior art, the display screen in the embodiment is clearer, more accurate and more stable in display, meanwhile, the attractive force is stable near the preset attractive force in the operation process, and the digital display is more intelligent.

The main control board is combined with the display screen, according to the intelligent preset function of the human-computer interaction unit, the warning value of the deficit amount can be set initially according to the specific situation of a patient, the deficit amount is detected in real time by the main control board in the operation process and displayed through the display screen, and warning prompt is started when the warning value is reached. Certainly, the negative pressure suction force can be preset, different negative pressure suction forces are set according to the operation requirements, and the tissues and the uterine distention liquid cut off in the operation process are sucked into the liquid collecting container.

Example 2

Embodiment 2 of the present invention provides a fluid management system, which, as shown in fig. 4, may include: the liquid injection amount weighing device 200, the liquid outflow amount weighing device 300, and the fluid management host 100 in the above-described embodiment 1;

the liquid injection amount weighing device 200 connected with the liquid injection container and the liquid outlet amount weighing device 300 connected with the liquid collection container are respectively and electrically connected with the main control board through weighing signal interfaces, and the main control board is used for receiving the liquid injection amount sent by the liquid injection amount weighing device and the liquid outlet amount sent by the liquid outlet amount weighing device, generating a suction control instruction according to the liquid injection amount and/or the liquid outlet amount and sending the suction control instruction to the suction pump group; the suction pump set is used for executing the received suction control command.

The liquid injection amount weighing device 200 and the liquid discharge amount weighing device 300 in the embodiment of the present invention may be in any form, for example, the liquid injection amount weighing device 200 and the liquid discharge amount weighing device 300 may be liquid flow meters, weighing devices, or the like, and the embodiment of the present invention is not particularly limited thereto as long as two specific values of the liquid injection amount and the liquid discharge amount can be obtained and sent to the master controller of the fluid management host. The system in the embodiment of the invention avoids larger errors caused by human factors, thereby reducing the operation risk.

In an alternative embodiment, the master control board is adapted to generate at least one of the following pumping control commands: generating a suction control instruction for controlling the starting of the suction pump set according to the liquid injection amount and a preset liquid injection amount threshold; or generating a suction control command for controlling the stop of the suction pump group according to the liquid outlet amount and the capacity of the liquid collecting container; or generating a suction control instruction for controlling the suction pump set to stop according to the difference value between the liquid injection amount and the liquid discharge amount; or generating a suction control instruction for controlling the suction pump group to stop according to the liquid injection amount, the liquid outlet amount, the preset compensation amount and the preset deficit amount threshold; or generating a suction control instruction for regulating and controlling the suction power of the suction pump set according to the liquid injection flow rate corresponding to the liquid injection amount and the liquid outlet flow rate corresponding to the liquid outlet amount.

The above specific implementation manner in this embodiment may refer to the description in embodiment 1, and is not described herein again.

The main control board can also send the comparison result to a display screen; and displaying the comparison result on the display screen, or sending out corresponding early warning according to the comparison result by the display screen. In the operation process, the fluid management host computer automatic monitoring swells the play liquid quantity value that palace liquid flows out, the waste liquid value that collecting container collected to and preset pipeline persists value etc. calculate the weight of deficit volume, convert into the volume according to the liquid concentration value of setting for again, be close to deficit volume default when the volume value, energy column colour on the display screen can how much change colour according to deficit volume value, in case reach the default, will become red, there is bee calling organ to report to the police simultaneously, in order to reach the purpose of audible and visual alarm.

The invention provides a fluid management system for collecting and metering liquid for a hysteroscope, which has reasonable structural design and convenient use. The suction device can suck tissues in real time, monitor the amount of fluid (uterine distention fluid) entering the blood circulation of an organism in real time in the hysteroscopic operation, and display the interface through the display screen.

The embodiment of the invention can preset the alarm value of the fluid deficit, can alarm through the buzzer when the real-time deficit reaches the preset value, and can also provide a corresponding energy column on the display screen to prompt an operator.

It should be noted here that, in order to ensure the safety during the operation, that is, to provide a stable constant pressure environment in the uterine cavity, when the absorption amount of the uterine distention solution may reach the maximum value borne by the human body, the negative pressure suction function needs to be stopped first, and then the injection of the uterine distention solution is stopped, so as to avoid the danger caused by the pressure loss in the uterine cavity.

In another alternative embodiment, the liquid injection amount weighing device may include a first weighing sensor, and the liquid discharge amount weighing device includes a second weighing sensor; first weighing sensor and second weighing sensor pass through the cable and connect in weighing signal interface.

The inventor finds that the data measured by using the liquid flowmeter is low in accuracy and easy to block in the actual test process, so that the embodiment of the invention preferably uses a weighing sensor to weigh the injected and sucked fluid, determines the volume of the deficit amount according to the density of the fluid, and compares the volume with the preset deficit amount threshold. The weighing sensor in the embodiment adopts a high-precision and power-saving 24-bit A/D converter chip, voltage signals of the differential sensor can be converted into digital signals, the main control board periodically reads data of the weighing sensor through a timer for calculation, and the data are sent to a display for display after filtering processing.

For the technical effects and related examples of the system in the embodiment of the present invention, reference may be made to the related contents of the embodiment of the fluid management host, and repeated descriptions are omitted.

Example 3

The inventor finds that in the existing minimally invasive uterine cavity surgery process, the collection barrel is placed on an electronic scale for weighing measurement. However, when the liquid outlet amount of the uterus swelling liquid is larger than the volume of the collecting barrel, the collected uterus swelling liquid needs to be poured out. In the process of switching the weighing barrels, the uterus swelling liquid is easy to spill. The existing method has a plurality of defects, one is that the metering method is not accurate; secondly, calculating the deficit amount after weighing, wherein the instantaneity is poor; thirdly, the workload of medical staff is increased, and the convenience is poor. And no whole set of system in the prior art can provide convenient service for the uterine cavity minimally invasive surgery.

Embodiment 3 of the present invention provides a fluid management system, which can collect the aspirated fluid and the cut tissues such as myoma and polyp, respectively measure the aspirated fluid and the fluid injected into the patient in real time, and facilitate to intuitively know the deficit amount data in the minimally invasive uterine cavity surgery process. Referring to fig. 5-8, and as shown in conjunction with fig. 3A and 3B, the system may include: a rack 400 and a fluid management host 100 as in embodiment 1; the injection container 500 and the collection container 600 may be loaded on the frame 400; the frame body 400 is provided with a weighing sensor for acquiring the liquid injection amount of the liquid injection container 500 and the liquid discharge amount of the liquid collection container 600; the weighing sensor is electrically connected with the main control board 12 through a weighing signal interface 112; the liquid collecting container 600 is connected with the suction pump set 13 through the suction interface 111; the main control board 12 is used for generating a suction control instruction according to the liquid injection amount and/or the liquid discharge amount and sending the suction control instruction to the suction pump set 13; the suction pump group 13 executes the suction control command to control the suction force by the liquid collection container 600.

Specifically, the frame body 400 is provided with a first weighing sensor 410 for weighing the liquid filling amount of the liquid filling container 500 which can be suspended on the frame body, and a second weighing sensor 420 for weighing the liquid outlet amount of the liquid collecting container 600 loaded on the frame body; the first weighing sensor 410 and the second weighing sensor 420 are respectively and electrically connected with the main control board 12 through the weighing signal interface 112; the liquid collecting container 600 may be connected to the suction port 111 through a hose.

It should be noted that, in the embodiment of the present invention, the rack body may be provided with a host tray or a rack for placing a flow management host, and the embodiment of the present invention does not limit the specific structure and the specific position of the host tray or the rack.

The inventor finds that the fluid collecting device used in the prior art can not be used for weighing in real time, can not display multiple different data and can not realize a negative pressure suction function, and develops a fluid management host machine capable of integrating multiple functions to provide negative pressure suction for surgical instruments such as a shaver and the like in a minimally invasive uterine cavity surgery and absorb tissues cut by the surgical instruments such as the shaver and the like into a liquid collecting container. The infusion volume of fluid (uterus swelling liquid) is monitored in real time in the operation process and the liquid output volume of the liquid collecting container is collected, and then the main control board displays the infusion volume, the liquid output volume, the determined vacancy volume and the like in a display screen in real time, so that a user can master various physical sign data of the patient at any moment, and great convenience is provided for smooth operation. Meanwhile, the liquid injection container and the liquid collecting container are arranged on the frame body, so that the accommodating space is saved, and the convenience in operation is improved.

In an alternative embodiment, as shown in fig. 5 to 8, the frame 400 may further include: base assembly 430, infusion rod assembly 440, hook assembly 450 and collection container holder 460;

the base assembly 430 may include: a base 431, a roller 432 disposed at the bottom of the base 431, and a load mounting bar 433 fixed to the base 431; the infusion rod assembly 440 is mounted in the hollow structure of the load mounting rod 433;

one end of the first weighing sensor 410 is detachably connected to the infusion rod assembly 440, and the other end is connected to the hook assembly 450; the hook assembly 450 is used to hang a fluid bag; the second load cell 420 is detachably mounted to a side surface of the load mounting bar 433; the liquid collecting container mount 460 is installed on the second load cell 420.

The frame body structure provided by the embodiment of the invention provides a carrier for a plurality of medical instruments, and facilitates the supervision of fluid in the operation process. Because the frame body in the embodiment adopts the form design of the movable trolley, the fluid management host is placed on the platform arranged on the trolley, so that the liquid injection container (a fluid bag for bearing distending liquid such as physiological saline, glucose injection and the like) hung by the hook assembly and the adsorbed fluid can be weighed in time, and the error and the delay of manual weighing are avoided.

In one embodiment, the infusion rod assembly 440 may comprise: an infusion outer rod 441 arranged in a hollow structure of the load mounting rod 433, an infusion inner rod 442 nested in the infusion outer rod, and a clamping sleeve 443 rotatably nested on the outer surface of the infusion outer rod 441;

one end of the first load cell 410 is removably attached to the infusion inner rod 442.

In another alternative embodiment, the hook assembly 450 may include: a hook support 451 and a plurality of hooks 452 connected to the hook support 451; the hook bracket 451 is detachably attached to the first load cell 410.

The infusion rod assembly provided by the embodiment of the invention can adjust the height according to the medical care environment and the specific condition of a patient, and the height of the liquid injection container can be adjusted by matching with the hook assembly, and meanwhile, the first weighing sensor in the embodiment can be reset, so that the liquid injection amount of the uterus swelling liquid injected into the patient can be weighed, the medical care personnel can observe the liquid injection amount in real time, and the physical signs of the patient can be known.

It should be noted that the hook assembly in the figure can hang 4 uterus expanding liquid bags (liquid filling containers), and each bag is 2L. The uterus swelling liquid bags are distributed in a straight line, a reasonable distance is reserved between every two uterus swelling liquid bags, weighing is accurate, the weighed analog quantity value is converted into the digital quantity value through signal conversion, and the digital quantity value is displayed in real time.

More specifically, referring to fig. 5 to 8, a hook support 451 is mounted on the upper portion of the first weighing sensor 410 in a screw fastening manner, and 4 hooks are fixed on the hook support 451 in a nut fastening manner and used for hanging 4 uterus expanding liquid bags; the 4 hooks 452 are distributed on the hook support 451 in a straight line shape, but may be distributed in a circumferential shape, which is not limited in this embodiment. Preferably, a reasonable space is reserved between every two hooks, so that the uterus expanding liquid bag (liquid injection container) can be conveniently placed and taken down. The lower side of the first weighing sensor is fixed on a sensor fixing plate in a screw tightening mode, the sensor fixing plate is clamped on an infusion inner rod in a spring ball rolling mode, and the height of the infusion inner rod can be adjusted in the vertical direction of an infusion outer rod, so that the height of the uterus expanding liquid bag can be adjusted.

In an alternative embodiment, the sump holder 460 may include: a liquid collecting container tray 461, a connecting column 462 and a tray fixing frame 463; the liquid collecting container tray 461 is detachably arranged on the second weighing sensor 420, and the tray fixing frame 463 and the liquid collecting container tray 461 are connected through a connecting column 462; the upper surface of the liquid collecting container tray 461 is provided with a liquid collecting container positioning groove (not shown).

In the embodiment of the invention, the second weighing sensor is fixed on the load mounting rod through the sensor bracket, the liquid collecting container trays in the liquid collecting container fixing frame are distributed around the load mounting rod in a circumferential mode, each tray is connected to the second weighing sensor in a screw fastening mode, the trays are suspended and surround the load mounting rod, and the surfaces of the trays are provided with corresponding liquid collecting container positioning grooves, so that the liquid collecting container fixing frame is convenient to mount quickly; the tray fixing frame is arranged above the tray of the liquid collecting container and used for stabilizing the liquid collecting container and preventing the liquid collecting container from inclining or falling off when the trolley is pushed or operated. The height of the tray fixing frame from the liquid collecting container tray is larger than half of the height of the liquid collecting container, and the tray fixing frame and the liquid collecting container tray are connected through a connecting column and tightly fixed through screws. Preferably, the height of the connecting column can be adjusted, namely, the connecting column can be matched with liquid collecting containers of different models.

In an alternative embodiment, referring to fig. 5 to 8, at least two second load cells 420 are provided; the liquid collecting container 600 may include: a first fluid collection container 610 connected to the surgical instrument 700 and a second fluid collection container 620 connected to a collection membrane (not shown); one of the second load cells is connected to the first fluid collection container and the other is connected to the second fluid collection container.

The liquid collecting container in the embodiment of the invention is provided with a suction inlet and a suction outlet; the suction port and the suction interface of the fluid management main machine can be connected through a hose, and the suction port is connected with a surgical instrument and/or a collecting membrane. In the embodiment of the present invention, in order to accurately determine the liquid amount, the fluid sucked by the surgical instrument and the fluid overflowing the collecting film are collected by using the liquid collecting container, so that two sets of suction pumps, two sets of corresponding liquid collecting containers, and two sets of second weighing sensors need to be matched.

The suction inlet on the liquid collecting container in the embodiment is connected to the suction interface of the fluid management host, the self suction tube of the surgical instrument such as the shaver is connected to the designated suction interface of the liquid collecting container, the negative pressure suction value and the vacancy amount value are set through the host, and the negative pressure suction function is started. The uterus expanding liquid in the uterine cavity is absorbed into a liquid collecting container through a suction function in the hysteroscope operation, and the uterus expanding liquid is weighed in real time through a weighing function to display the volume value of the digital quantity. And the defect quantity threshold value is compared with a preset value, so that the aim of real-time monitoring is fulfilled, and the operation safety is improved.

Referring to fig. 5 and 8, the second load cell 420 may include: two load cells, such as a second load cell 421 and a third load cell 422, are symmetrically mounted on the load mounting bar 433.

Of course, the second load cell 420 in this embodiment may further include: at least three load cells mounted on the load mounting bar; at least three load cells are distributed around the load mounting bar. For example, a second load cell is connected to a lower end of each liquid collecting container, which is not particularly limited in the embodiments of the present invention.

In another alternative embodiment, the fluid management system described above with reference to fig. 5 and 6 may further comprise: surgical instrument 700 and/or a collection membrane (not shown); the surgical instrument 700 is connected to a first fluid collection container 610 and the collection membrane is connected to a second fluid collection container. In the embodiment of the present invention, in order to accurately determine the liquid amount, the fluid sucked out by the surgical instrument and the fluid overflowing the collecting membrane are collected by the liquid collecting container. The fluid management system in the embodiment is used as a part of the operation system, so that medical staff can conveniently know various physical sign data and operation data of a patient in time, and the convenience is better.

In another alternative embodiment, in order to power the surgical instrument, as shown in fig. 5 and 6, the system may further include: a power plant main unit 800; the power device main unit 800 is electrically connected to the surgical instrument 700, and is used for driving the surgical instrument 700. For example, the power device main unit in this embodiment is used as a driving control unit of the surgical instrument to ensure stable performance of the minimally invasive surgery.

It should be noted that, in the embodiment of the present invention, the rack body may be provided with a host tray or a rack for placing a host of power equipment, and the embodiment of the present invention does not limit the specific structure and the specific position of the host tray or the rack.

In another alternative embodiment, in order to make the above-mentioned liquid output weighing more accurate, referring to fig. 5 and 6, the fluid management system may further include: a filtering device 900; the filter device 900 is disposed on the frame 400 and is connected to the first liquid collecting container 610 and the surgical instrument 700, respectively. It should be noted that the filtering device can be respectively connected with the first liquid collecting container and the surgical instrument through the hose, so that the operation of the surgical instrument in the surgical process is not influenced, the weight of the first liquid collecting container weighed by the second weighing sensor cannot be influenced by the hose in the weighing process, and the weighed liquid outlet quantity is higher in precision after filtering and cutting tissues such as polyp and myoma.

In another optional embodiment, the fluid management system may further include: the uterine cavity endoscope is provided with an instrument channel; the liquid injection container is connected with the instrument channel through a hose. The instrument channel in the embodiment of the invention can accommodate the surgical instrument to carry out minimally invasive operation on the uterine cavity, and can inject fluid (uterine expansion liquid) to expand the uterine or clean tissues and the like.

For the technical effects and related examples of the system in the embodiment of the present invention, reference may be made to the related contents of the embodiment of the fluid management host, and repeated descriptions are omitted.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. The present disclosure is not limited to the precise constructions described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.