阅读说明：本技术 一种医用负压吸引装置 (Medical negative pressure suction device ) 是由 孟磊 李中华 李敬 马剑翔 于博宇 魏铭 任贺成 于 2020-06-11 设计创作，主要内容包括：本发明涉及一种医用负压吸引装置,包括负压泵和无源抽负压机构；所述负压泵包括瓶体和上盖,所述上盖密封连接至所述瓶体以封闭所述瓶体的瓶口,所述上盖设置有用于抽压或泄压的抽泄压口、用于与外部构件连接的控制开关和负压表；所述无源抽负压机构能够与所述负压泵的抽泄压口接合。本发明是一种无源的医用负压吸引装置,压力保持性好,成本较低且体积较小,易于移动,在抽吸手术中操作简单。(The invention relates to a medical negative pressure suction device, which comprises a negative pressure pump and a passive negative pressure pumping mechanism; the negative pressure pump comprises a bottle body and an upper cover, the upper cover is connected to the bottle body in a sealing mode to seal a bottle opening of the bottle body, and the upper cover is provided with a pressure pumping and releasing opening for pumping pressure or releasing pressure, a control switch for connecting with an external component and a negative pressure meter; the passive negative pressure pumping mechanism can be jointed with a pressure pumping and releasing port of the negative pressure pump. The passive medical negative pressure suction device has the advantages of good pressure retention, lower cost, smaller volume, easy movement and simple operation in the suction operation.)

1. A medical negative pressure suction device is characterized by comprising a negative pressure pump and a passive negative pressure pumping mechanism; the negative pressure pump comprises a bottle body and an upper cover, the upper cover is connected to the bottle body in a sealing mode to seal a bottle opening of the bottle body, and the upper cover is provided with a pressure pumping and releasing opening for pumping pressure or releasing pressure, a control switch for connecting with an external component and a negative pressure meter; the passive negative pressure pumping mechanism can be jointed with a pressure pumping and releasing port of the negative pressure pump.

2. The medical negative pressure suction device according to claim 1, wherein the upper cover is provided with a circumferential flange, the circumferential flange is provided with a groove along a circumferential direction, the edge of the bottle mouth of the bottle body is embedded in the groove, and a first sealing ring is arranged at the embedded part of the groove and the edge of the bottle mouth of the bottle body.

3. The medical negative pressure suction device according to claim 1 or 2, wherein two or more latch pieces for latching the upper cover to the bottle body are connected to an edge of the upper cover.

4. The medical negative pressure suction device according to claim 1, wherein the negative pressure gauge is threadedly connected to the upper cover, and a second seal ring is provided at a connection between the negative pressure gauge and the upper cover.

5. The medical negative pressure suction device according to claim 1, wherein luer connectors are provided at both ends of the control switch, one end of the control switch is directly or indirectly connected to the upper cover through the luer connectors, the other end of the control switch is connected to the external member through the luer connectors, and a third sealing ring is provided at an opening of the upper cover for connecting the control switch.

6. The medical negative pressure suction device according to claim 1, wherein a movable pin is provided in the pressure release port, a sealing plug is provided between the pressure release port and the movable pin, and a protective cap connected to the upper cover is provided outside the pressure release port.

7. The medical negative pressure suction device according to claim 1, wherein the external member connected to the control switch is a medical suction member.

8. The medical negative pressure suction device according to claim 1, wherein the bottle body is made of a transparent material or a translucent material, and a volume scale is marked on the outside of the bottle body.

9. The medical negative pressure suction device according to claim 1, wherein the passive negative pressure suction mechanism is a negative pressure suction gun, the negative pressure suction gun comprises a tubular main body, a handle, and a negative pressure suction nozzle, the negative pressure suction nozzle is connected to a front end of the tubular main body to be engaged with the pressure suction opening of the negative pressure pump, an extension part of the handle is disposed inside the tubular main body, a negative pressure suction plug is connected to a front end of the extension part of the handle, and the movement of the negative pressure suction plug is driven by pulling a hand-held part of the handle.

10. The medical negative pressure suction device according to claim 9, wherein a spring is provided between the negative pressure suction plug and the tubular body along an extension of the handle.

11. The medical negative pressure suction device according to claim 10, wherein the negative pressure suction nozzle and the negative pressure suction plug are made of rubber or silicone; the inner diameter of the negative pressure pumping nozzle corresponds to the outer diameter of the pressure pumping and releasing port, so that the negative pressure pumping nozzle is tightly matched with the pressure pumping and releasing port.

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to a medical negative pressure suction device.

Background

The principle of the medical negative pressure suction device is that the negative pressure state of the suction head is manufactured by a certain method, so that substances outside the suction head can be extruded to the suction head by atmospheric pressure, and the suction effect is achieved.

The medical negative pressure suction device is generally used for sucking and removing the contents of bleeding, exudates, pus and thoracic organs in the operation, so that the operation is clear and the pollution chance is reduced. Due to the development of the field of nerve intervention, in the process of treating intracranial thrombus in the surgical intervention operation, the medical negative pressure suction device is used for providing certain negative pressure to help doctors to suck the thrombus.

The negative pressure source of thrombus suction product on the market at present is the active negative pressure pump of product self-bring, and this negative pressure pump is bulky, and need insert the electricity and use, leads to negative pressure pump to remove limitedly, in the in-service use, brings the inconvenience for medical personnel. The use of plugging in also results in the negative pressure pump being unusable in the event of an emergency without power. In addition, such negative pressure pumps are costly. Most doctors perform thrombus suction operation by using negative pressure generated in the drawing process of the syringe in the operation, but the technical requirement on the doctors is higher in the mode, the syringe is controlled by a doctor to perform suction in the operation, the number of doctors in the operation is increased, the capacity of the syringe is smaller, the pressure loss is fast, the syringe needs to be replaced by the doctor in the process, and the operation of the doctor is inconvenient.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide a medical negative pressure suction device which is a passive medical negative pressure suction device, has good pressure retention, lower cost and smaller volume, is easy to move and is simple to operate in a suction operation.

The purpose of the invention is realized by the following technical scheme:

a medical negative pressure suction device comprises a negative pressure pump and a passive negative pressure pumping mechanism; the negative pressure pump comprises a bottle body and an upper cover, the upper cover is connected to the bottle body in a sealing mode to seal a bottle opening of the bottle body, and the upper cover is provided with a pressure pumping and releasing opening for pumping pressure or releasing pressure, a control switch for connecting with an external component and a negative pressure meter; the passive negative pressure pumping mechanism can be jointed with a pressure pumping and releasing port of the negative pressure pump.

Preferably, the upper cover is provided with a circumferential flange, the circumferential flange is provided with a groove along the circumferential direction, the edge of the bottle mouth of the bottle body is embedded in the groove, and a first sealing ring is arranged at the embedded part of the groove and the edge of the bottle mouth of the bottle body.

Preferably, two or more locking pieces for locking the upper cover to the bottle body are connected to the edge of the upper cover.

Preferably, the negative pressure meter is in threaded connection with the upper cover, and a second sealing ring is arranged at the connection position of the negative pressure meter and the upper cover.

Preferably, both ends of the control switch are provided with luer connectors, one end of the control switch is directly or indirectly connected with the upper cover through the luer connectors, the other end of the control switch is connected with the external component through the luer connectors, and a third sealing ring is arranged at an opening of the upper cover for connecting the control switch.

Preferably, a movable pin is arranged in the pressure relief opening, a sealing plug is arranged between the pressure relief opening and the movable pin, and a protective cap connected to the upper cover is arranged outside the pressure relief opening.

Preferably, the external member connected with the control switch is a medical suction member.

Preferably, the bottle body is made of a transparent material or a semitransparent material, and the outside of the bottle body is marked with volume scales.

Preferably, passive negative pressure mechanism of taking out is for taking out the negative pressure rifle, take out the negative pressure rifle and include tubular main part, handle and take out the negative pressure mouth, take out the negative pressure mouth and connect the front end of tubular main part in order with the negative pressure pump take out the pressure release mouth and join, the extension of handle sets up inside the tubular main part, the front end of the extension of handle is connected with takes out the negative pressure stopper, through the pulling the handheld part of handle drives the removal of taking out the negative pressure stopper.

Preferably, a spring is provided between the suction plug and the tubular body along an extension of the handle.

Preferably, the negative pressure pumping nozzle and the negative pressure pumping plug are made of rubber or silica gel; the inner diameter of the negative pressure pumping nozzle corresponds to the outer diameter of the pressure pumping and releasing port, so that the negative pressure pumping nozzle is tightly matched with the pressure pumping and releasing port.

The invention has the beneficial effects that:

1. compared with the active medical negative pressure suction device, the passive medical negative pressure suction device has the advantages of lower cost, smaller volume and easy movement.

2. The passive medical negative pressure suction device is a manual negative pressure suction device, is not required to be plugged, only needs to be used for sucking proper negative pressure by using a negative pressure suction gun according to the display of a negative pressure meter before an operation according to the operation condition, does not occupy a power supply port of an operating room, and does not have risks caused by electrical safety.

3. The bottle mouth sealing ring is arranged in the middle of the upper cover of the negative pressure pump and the bottle body of the negative pressure pump, the sealing ring is arranged at the joint of the negative pressure meter and the upper cover of the negative pressure pump, and the sealing ring is also arranged at the joint of the Ruhr joint and the upper cover of the negative pressure pump, so that the negative pressure pump has good pressure maintaining performance, and a relatively stable negative pressure value is provided in the suction operation.

4. The structural design of the movable pin and the sealing plug of the pumping pressure relief port provides a function similar to a one-way valve, so that in the process of pumping negative pressure by using the pumping negative pressure gun to the negative pressure pump, gas in the negative pressure pump can be only transmitted from the inside to the outside of the negative pressure pump, and the negative pressure pumping efficiency is increased.

5. The design of the protective cap of the pressure relief opening requires that after the medical personnel finishes the process of pumping negative pressure, the protective cap covers the pressure relief opening to prevent the medical personnel from misoperation later to cause the pressure relief of the negative pressure pump, and meanwhile, the protective cap of the pressure relief opening is connected with the upper cover of the negative pressure pump to prevent the protective cap of the pressure relief opening from being lost.

6. The external connecting part of the control switch is a luer connector which is matched with most middle catheters and suction catheters used for suction in the market, and the control switch is simple to operate and convenient for a doctor to operate with one hand.

7. The bottle body of the negative pressure pump is made of transparent materials and is marked with volume scales, so that doctors can conveniently observe the blood volume to be sucked.

8. The upper cover of the negative pressure pump is provided with 2-5 locking fasteners which can fasten the upper cover of the negative pressure pump and the bottle body of the negative pressure pump before negative pressure pumping, so that the tightness in the negative pressure pumping process is increased, the efficiency of manually pumping negative pressure is improved, and meanwhile, the locked negative pressure pump prevents blood in the negative pressure pump from overflowing due to misoperation of doctors.

9. The negative pressure pumping nozzle is made of rubber or silica gel, the inner diameter of the negative pressure pumping nozzle is tightly matched with the outer diameter of the pressure pumping/relieving opening, the airtightness of the position of the negative pressure pumping process is improved, and the negative pressure pumping efficiency is improved.

10. The negative pressure pumping plug is made of rubber or silica gel, so that the overall vacuum degree of the negative pressure pumping gun is improved, the negative pressure pumping efficiency is improved, and the negative pressure value which can be pumped by the negative pressure pump is improved.

11. The hand-held part of the handle of the negative pressure suction gun is of a TPE (thermoplastic elastomer) rubber coating structure, so that medical workers feel better in the process of manually sucking the negative pressure and are not easy to hurt hands.

Drawings

Fig. 1 is a schematic structural view of a medical negative pressure suction device according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a negative pressure pump according to an embodiment of the present invention, in which a control switch is indirectly connected to an upper cover.

Fig. 3 is a partial sectional view of the negative pressure pump of fig. 2.

Fig. 4 is a schematic structural view of an underpressure gun according to an embodiment of the present invention.

Fig. 5 is a sectional view of the negative pressure suction gun of fig. 4.

Fig. 6 is a schematic structural view of a negative pressure pump according to an embodiment of the present invention, in which a control switch is directly connected to an upper cover.

Description of reference numerals:

1. a negative pressure pump; 101. an upper cover; 102. a negative pressure gauge; 103. pumping a pressure relief opening; 104. a fastener; 105. a control switch; 106. a bottle body; 107. a luer fitting; 108 a pressure extension tube; 109. a first seal ring; 110. a second seal ring; 111. a third seal ring; 112. a protective cap; 113. a movable pin; 114. a sealing plug; 2. pumping a negative pressure gun; 201. a tubular body; 202. a handle; 203. pumping a negative pressure nozzle; 204. pumping a negative pressure plug; 205. a spring; 206. a fixed seat.

It is to be understood that the appended drawings are not to scale, but are merely drawn with appropriate simplifications to illustrate various features of the basic principles of the invention. Specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, locations, and configurations, will be determined in part by the particular intended application and use environment. In the several figures of the drawings, identical or equivalent components (elements) are referenced with the same reference numerals.

Detailed Description

The invention is further described below with reference to specific embodiments and the accompanying drawings.

As shown in fig. 1 to 5, a medical negative pressure suction apparatus according to an embodiment of the present invention includes a negative pressure pump 1 and a negative pressure suction gun 2; the negative pressure pump 1 comprises a bottle body 106 and an upper cover 101, wherein the upper cover 101 is hermetically connected to the bottle body 106 to close the bottle mouth of the bottle body 106, and the upper cover 101 is provided with a pressure pumping and releasing port 103 for pumping pressure or releasing pressure, a control switch 105 for connecting with an external component and a negative pressure meter 102; the negative pressure pumping gun 2 comprises a tubular main body 201, a handle 202 and a negative pressure pumping nozzle 203, the negative pressure pumping nozzle 203 is connected to the front end of the tubular main body 201 to be connected with the pressure pumping pressure outlet 103 of the negative pressure pump 1, the extending part of the handle 202 is arranged inside the tubular main body 201, the front end of the extending part of the handle 202 is connected with a negative pressure pumping plug 204, and the negative pressure pumping plug 204 is driven to move by the handheld part of the handle 202 through pulling.

In the present embodiment, the passive negative pressure pumping mechanism is a negative pressure pumping gun, which performs negative pressure pumping operation by a manual method. Of course, the passive negative pressure pumping mechanism is not limited thereto, and any mechanism capable of achieving the negative pressure pumping operation by a passive manner is possible.

In the present embodiment, the external member connected to the control switch 105 is a medical suction member. The medical negative pressure suction device is generally used for sucking and removing the contents of bleeding, exudates, pus and thoracic organs in the operation, so that the operation is clear and the pollution chance is reduced. Due to the development of the field of nerve intervention, in the process of treating intracranial thrombus in the surgical intervention operation, the medical negative pressure suction device is used for providing certain negative pressure to help doctors to suck the thrombus. The external members connected to the control switch 105 may be an intermediate catheter and an aspiration catheter for aspirating thrombi.

Compared with the active medical negative pressure suction device, the passive medical negative pressure suction device has the advantages of lower cost, smaller volume and easy movement. The passive medical negative pressure suction device is a manual negative pressure suction device, is not required to be plugged, only needs to be used before an operation according to the operation condition and the display of the negative pressure gauge 102 to extract proper negative pressure by using the negative pressure suction gun 2, does not occupy a power supply port of an operating room, and does not have risks caused by electrical safety.

As shown in fig. 2 to 3, according to the embodiment of the present invention, the upper cover 101 is provided with a circumferential flange, the circumferential flange is provided with a groove along a circumferential direction, the mouth edge of the bottle body 106 is embedded in the groove, and a first sealing ring 109 is arranged at the embedding position of the groove and the mouth edge of the bottle body 106. The thickness of the circumferential flange of the upper cap 101 is thicker than the thickness of the other portions of the upper cap 101, so that a groove may be formed in the circumferential flange of the upper cap 101 to fit the mouth edge of the bottle body 106 into the groove, and the first sealing ring 109 may be disposed between the inner wall of the mouth edge and the inner wall of the groove.

According to the embodiment of the present invention, the negative pressure gauge 102 is screwed with the upper cover 101, and a second sealing ring 110 is disposed at the connection between the negative pressure gauge 102 and the upper cover 101. Specifically, the top of the upper cover 101 is provided with a recessed portion, the negative pressure gauge 102 is installed in the recessed portion and is in threaded connection with the upper cover 101, and the bottom of the recessed portion is provided with an inlet of the negative pressure gauge 102, so that the negative pressure gauge 102 can measure the negative pressure value in the bottle body 106 of the negative pressure pump 1. The negative pressure gauge 102 is screwed to the upper cover 101 at the access port. The second seal ring 110 between the negative pressure gauge 102 and the upper cover 101 provides a good seal.

According to the embodiment of the present invention, both ends of the control switch 105 are provided with luer connectors 107, one end of the control switch 105 is directly or indirectly connected to the upper cover 101 through the luer connectors 107 (the control switch 105 may be directly connected to the upper cover 101 (as shown in fig. 6), or may be connected to the upper cover 101 through a pressure extension tube 108 (as shown in fig. 2)), the other end of the control switch 105 is connected to an external member through the luer connectors 107, and an opening of the upper cover 101 for connecting the control switch 105 is provided with a third sealing ring 111.

In the invention, bottle mouth sealing rings are arranged at the middle positions of the upper cover 101 of the negative pressure pump 1 and the bottle body of the negative pressure pump 1, the sealing ring is arranged at the joint of the negative pressure meter 102 and the upper cover 101 of the negative pressure pump 1, and the sealing ring is also arranged at the joint of the luer 107 and the upper cover 101 of the negative pressure pump 1, so that the negative pressure pump 1 has good pressure maintaining performance, thereby providing a relatively stable negative pressure value in a suction operation.

The external connection part of the control switch 105 of the invention is a luer connector 107 which is matched with most middle catheters and suction catheters used for suction in the market, and the control switch 105 is simple to operate and is convenient for a doctor to operate with one hand.

According to an embodiment of the present invention, two or more locking pieces 104, preferably 2-5 locking pieces 104, for locking the upper cover 101 to the bottle 106 are attached to the edge of the upper cover 101.

The upper cover 101 of the negative pressure pump 1 is provided with 2-5 locking fasteners 104, the locking fasteners 104 can fasten the upper cover 101 of the negative pressure pump 1 and the bottle body 106 of the negative pressure pump 1 before negative pressure pumping, the tightness in the negative pressure pumping process is increased, the efficiency of manual negative pressure pumping is improved, and meanwhile, the locked negative pressure pump 1 prevents blood in the negative pressure pump 1 from overflowing due to misoperation of a doctor.

According to an embodiment of the present invention, the bottle body 106 is made of a transparent material or a semitransparent material, and the bottle body 106 is marked with volume scales on the outside to facilitate the doctor to observe the amount of blood sucked.

As shown in fig. 3, according to the embodiment of the present invention, a movable pin 113 is disposed in the pumping pressure outlet 103, a sealing plug 114 is disposed between the pumping pressure outlet 103 and the movable pin 113, and a protective cap 112 connected to the upper cover 101 is disposed outside the pumping pressure outlet 103. Specifically, the pressure relief opening 103 provided in the upper cover 101 is a tubular opening, the movable pin 113 is inserted into the tubular pressure relief opening 103, and the sealing plug 114 is tightly interposed between the pressure relief opening 103 and the movable pin 113. The pressure relief opening 103 has a protruding edge protruding from the surface of the upper lid 101 in the circumferential direction, and the protruding edge is tightly fitted with the negative pressure suction nozzle 203 of the negative pressure suction gun 2.

The structural design of the movable pin 113 and the sealing plug 114 of the pumping and pressure releasing port 103 provides a function similar to a one-way valve, so that in the process of pumping negative pressure to the negative pressure pump 1 by using the pumping and negative pressure gun 2, gas in the negative pressure pump 1 can be only transmitted from the inside to the outside of the negative pressure pump 1, and the negative pressure pumping efficiency is increased.

The design of the protective cap 112 of the pressure relief opening 103 requires that after the medical staff finishes the process of pumping negative pressure, the protective cap 112 covers the pressure relief opening 103 to prevent the medical staff from misoperation later to cause the pressure relief of the negative pressure pump 1, and meanwhile, the pressure relief opening protective cap 112 is connected with the upper cover 101 of the negative pressure pump 1 to prevent the protective cap 112 of the pressure relief opening 103 from being lost.

As shown in fig. 4 to 5, a spring 205 is disposed between the negative pressure extraction plug 204 and the tubular body 201 along an extension of the handle 202, and the spring 205 can provide a restoring force to the handle 202 after the handle 202 is extracted. The negative pressure extraction plug 204 is in threaded connection with the extending part of the handle 202, and a fixing seat 206 for limiting the negative pressure extraction plug 204 is arranged in the tubular main body 201 close to the front end. The negative pressure suction plug 204 is tightly attached to the inner wall of the tubular body 201, so as to achieve a good effect of sucking air in the negative pressure pump 1.

According to an embodiment of the present invention, the negative pressure suction nozzle 203 and the negative pressure suction plug 204 are made of rubber or silicone; the inner diameter of the negative pressure suction nozzle 203 corresponds to the outer diameter of the pressure suction and release opening 103, so that the negative pressure suction nozzle 203 is tightly matched with the pressure suction and release opening 103.

The negative pressure pumping nozzle 203 is made of rubber or silica gel, the inner diameter of the negative pressure pumping nozzle 203 is tightly matched with the outer diameter of the pressure pumping/relieving opening, the tightness of the position of the negative pressure pumping process is improved, and the negative pressure pumping efficiency is improved.

The negative pressure pumping plug 204 is made of rubber or silica gel, so that the overall vacuum degree of the negative pressure pumping gun 2 is improved, the negative pressure pumping efficiency is improved, and the negative pressure value which can be pumped by the negative pressure pump 1 is improved.

The handle 202 of the negative pressure pumping gun 2 is of a TPE soft rubber coating structure, so that medical workers feel better in the process of manually pumping the negative pressure, and are not easy to hurt hands.

All parts in the medical negative pressure suction device are made by opening the die, and the parts after opening the die have lower cost and better performance, and can increase the whole sealing performance. Before the intracranial thrombus aspiration operation, according to the experience of a doctor, the negative pressure pumping nozzle 203 is used for propping against the pressure pumping and releasing port 103, the handle 202 of the negative pressure pumping gun 2 is repeatedly pulled, and the negative pressure pumping operation is carried out on the negative pressure pump 1, wherein the recommended negative pressure value is-50 KPA to-80 KPA. The whole medical negative pressure suction device is a sterile product, and a doctor can directly place the negative pressure pump 1 which finishes pumping negative pressure on an operating table without worrying about pollution to surgical instruments or the body of a patient. In the operation process, a doctor can connect one end of the control switch 105 with an intermediate catheter or an aspiration catheter which is required to be connected by the doctor through the luer 107 according to the characteristics of thrombus, the far end of the intermediate catheter or the aspiration catheter is abutted to the position of the thrombus through the indication of a developed image, meanwhile, the control switch 105 is turned on, at this time, the thrombus is sucked into the negative pressure pump 1 or held by the head end of the intermediate catheter or the aspiration catheter due to the negative pressure effect, and the doctor slowly moves the intermediate catheter or the aspiration catheter out of the body to finish the purpose of thrombus removal. During this process, the physician can turn the control switch 105 on or off as desired at any time. After the thrombus is taken out, the control switch 105 is closed, the operation of the whole thrombus taking process is simple, and only one doctor is needed to complete the thrombus taking process.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable others skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications thereof.