阅读说明：本技术 一种羊水自动定量抽取装置 (Automatic quantitative draw-out device of amniotic fluid ) 是由 李颖 董旭东 王华伟 李倩 颜瑞 于 2021-08-16 设计创作，主要内容包括：本发明公开了一种羊水自动定量抽取装置,包括穿刺端、抽取端和储存装置,其特征在于：所述抽取端包括一体成型的水平段和与水平段呈75°夹角的倾斜段,水平段中段下表面可拆卸的连接储存装置；抽取端前端设置管接头,穿刺端可拆卸的安装在管接头上；所述抽取端的水平段内前端固定安装微型水泵,微型水泵出水端连接到微型液体流量计,微型液体流量计另一端固定连接导流管；水平段后段内部为控制电路,倾斜段内部安装供电模块。本发明具有以下优点,能够设置抽取羊水的体积；自动抽取；随时暂停；操作简单；工作稳定；减轻医务人员的工作量。(The invention discloses an automatic quantitative amniotic fluid extraction device, which comprises a puncture end, an extraction end and a storage device, and is characterized in that: the extraction end comprises an integrally formed horizontal section and an inclined section forming an included angle of 75 degrees with the horizontal section, and the lower surface of the middle section of the horizontal section is detachably connected with a storage device; the front end of the extraction end is provided with a pipe joint, and the puncture end is detachably arranged on the pipe joint; a micro water pump is fixedly installed at the front end in the horizontal section of the extraction end, the water outlet end of the micro water pump is connected to a micro liquid flow meter, and the other end of the micro liquid flow meter is fixedly connected with a flow guide pipe; the inside control circuit that is of horizontal section back end, slope section internally mounted power module. The invention has the advantages that the volume for pumping the amniotic fluid can be set; automatic extraction; pausing at any time; the operation is simple; the work is stable; the workload of medical staff is reduced.)

1. The utility model provides an automatic quantitative draw-out device of amniotic fluid, includes puncture end, extraction end and storage device, its characterized in that: the extraction end comprises an integrally formed horizontal section and an inclined section forming an included angle of 75 degrees with the horizontal section, and the lower surface of the middle section of the horizontal section is detachably connected with a storage device; the front end of the extraction end is provided with a pipe joint, and the puncture end is detachably arranged on the pipe joint; a micro water pump is fixedly installed at the front end in the horizontal section of the extraction end, the water outlet end of the micro water pump is connected to a micro liquid flow meter, and the other end of the micro liquid flow meter is fixedly connected with a flow guide pipe; the inside control circuit that is of horizontal section back end, slope section internally mounted power module.

2. The automatic quantitative amniotic fluid extracting device according to claim 1, wherein the control circuit is electrically connected to the micro liquid flow meter, the micro water pump, the screen and the button, the push switch and the power supply module.

3. The automatic quantitative amniotic fluid extracting device according to claim 1, wherein the storage device is a transparent round bottle, the upper port of the storage device is connected with the extracting end through threads, and the outer wall of the round bottle is provided with volume scales; the round bottle adopts heat preservation and insulation materials.

4. The automatic quantitative amniotic fluid extraction device according to claim 1, wherein the puncture tip is an amniotic fluid puncture needle.

5. The automatic quantitative amniotic fluid extracting device as claimed in claim 2, wherein the push switch is installed inside the junction of the horizontal section and the inclined section of the extracting end, and an arc-shaped baffle is installed in front of the push switch.

6. The automatic quantitative amniotic fluid extracting device of claim 2, wherein the screen and the button are mounted on the upper surface of the rear section of the horizontal section, and the button is mounted on the outer side wall of the rear section of the horizontal section.

7. The use method of the automatic quantitative amniotic fluid extraction device according to any one of claims 1 to 6, wherein the device comprises:

(1) before use, the round bottle is installed, and the volume of amniotic fluid to be extracted is set through the screen and the keys;

(2) connecting the hose connecting port with a pipe interface;

(3) then, the amniotic fluid puncture needle is inserted into the amniotic fluid cavity, and the needle core is taken out;

(4) the other end of the hose is connected with the amniotic fluid puncture needle;

(5) holding the inclined section of the extraction end by one hand, and placing the forefinger at the position of the push switch;

(6) the other hand presses the start button;

(7) the micro water pump starts to work and extracts amniotic fluid;

(8) the micro liquid flow meter measures the volume of the pumped amniotic fluid;

(9) when the fetus approaches to the amniotic fluid puncture needle, the forefinger presses down the press switch, the micro-water pump stops working, and the amniotic fluid puncture needle is retracted to the space between the walls of the uterine muscles;

(10) when the fetus is far away from the amniotic fluid puncture needle, the amniotic fluid puncture needle is pushed forwards, the press switch is pressed again, and the micro-water pump continues to work;

(11) when the volume of the extracted amniotic fluid reaches a preset value, the micro water pump stops working;

(12) and then the device is taken down, thus completing the extraction of the amniotic fluid.

8. The automatic quantitative amniotic fluid extracting device according to any one of claims 1 to 8, which discloses an application of the automatic quantitative amniotic fluid extracting device in the technical field of medical instruments.

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an automatic quantitative amniotic fluid extracting device.

Background

Amniocentesis is the most common sampling method in prenatal diagnosisAnd is generally suitable for prenatal diagnosis of mid-term pregnancy. The method is characterized in that a disposable prenatal diagnosis puncture needle penetrates through the abdominal wall and the uterine wall of a pregnant woman under the guidance of ultrasound to enter an amniotic cavity, and about 30-40ml of amniotic fluid is extracted under a common condition to be used for a laboratory detection process. By extracting amniotic fluid, cell chromosome detection, gene detection or detection of some genetic metabolites, virus antigen antibodies and virus DNA in the amniotic fluid, some congenital diseases can be diagnosed and evaluated in the fetal period. Amniotic fluid exists in the amniotic cavity, and fertilized eggs form the amniotic cavity on the seventh day of fertilization, and amniotic fluid in the early stage of pregnancyProduced primarily from amnionThe amniotic fluid from 16 weeks of gestation is mainly derived from the urine of the fetus. The amniotic fluid volume is 50 ml at 12 weeks of gestation, 400 ml at 20 weeks and 1000-1500 ml at 36-38 weeks, and the amniotic fluid volume is slightly reduced near the expected date of delivery.

The optimal time for carrying out the amniotic fluid puncture is 16-22 weeks, and according to the management method of prenatal diagnosis and technology, the indications of the amniotic fluid puncture are as follows: an advanced pregnant woman over 1.35 years old; 2. high risk population after prenatal screening; 3. pregnant women who have born children with chromosomal disorders; 4. prenatal examination of pregnant women suspected of having a chromosomal disorder; 5. the couple is a carrier of abnormal chromosome; 6. the pregnant woman may be a carrier of a certain X-linked genetic disease gene; others, such as those who have had a history of poor pregnancy or a history of exposure to specific teratogenic factors.

At present, when a doctor clinically extracts amniotic fluid of a pregnant woman, the doctor firstly punctures a puncture needle into an amniotic cavity, then manually extracts the amniotic fluid in the amniotic cavity of the pregnant woman by using a 10mL syringe, holds a needle cylinder of the syringe by one hand during extraction, and pulls a piston core rod of the syringe outwards by the other hand, so that the amniotic fluid extraction action is completed. The doctor manually operates the injector, which is hard and inconvenient for the doctor to stably operate; quantitative extraction cannot be carried out; when the fetus is close to the puncture needle, the amniotic fluid can not be timely stopped to be extracted: when the injector connected with the puncture needle is repeatedly replaced, the puncture needle possibly exits from the uterine cavity, and needs to be punctured into the uterine cavity again, so that the risks of operation complications such as postoperative abortion, amniotic fluid leakage, placenta injury, fetus injury and the like are increased.

Disclosure of Invention

In order to solve the technical problem, the invention designs an automatic quantitative amniotic fluid extraction device, the front end of the device is provided with an amniotic fluid puncture needle which is used for puncturing into an amniotic fluid cavity, the amniotic fluid puncture needle is detachably connected with a hose, and the other end of the hose is provided with a connection port and a detachable connection pipe joint; the pipe joint is internally connected with the water inlet end of a micro water pump through a pipeline, the micro water pump is used for pumping amniotic fluid, the water outlet end of the micro water pump is connected with a micro liquid flow meter and is used for detecting the volume of the pumped amniotic fluid, the other end of the micro liquid flow meter is fixedly connected with a flow guide pipe, and the flow guide pipe extends into the round bottle and guides the pumped amniotic fluid into the round bottle; a press switch is arranged on the inner side of the intersection part of the horizontal section and the inclined section of the extraction end and used for stopping extraction at any time; each electronic element is controlled by a control circuit.

In order to achieve the technical effects, the invention is realized by the following technical scheme: the utility model provides an automatic quantitative draw-out device of amniotic fluid, includes puncture end, extraction end and storage device, its characterized in that: the extraction end comprises an integrally formed horizontal section and an inclined section forming an included angle of 75 degrees with the horizontal section, and the lower surface of the middle section of the horizontal section is detachably connected with a storage device; the front end of the extraction end is provided with a pipe joint, and the puncture end is detachably arranged on the pipe joint; a micro water pump is fixedly installed at the front end in the horizontal section of the extraction end, the water outlet end of the micro water pump is connected to the micro liquid flow meter, and the other end of the micro liquid flow meter is fixedly connected with the flow guide pipe; the control circuit is arranged in the rear section of the horizontal section, and the power supply module is arranged in the inclined section.

Furthermore, the control circuit is electrically connected with the micro liquid flow meter, the micro water pump, the screen and the keys, the press switch and the power supply module.

Furthermore, the storage device is a transparent round bottle, the upper port of the storage device is connected with the extraction end through threads, and the outer wall of the round bottle is provided with volume scales; the round bottle adopts heat preservation and insulation materials.

Furthermore, the puncture end is an amniotic fluid puncture needle.

Furthermore, the press switch is arranged on the inner side of the intersection part of the horizontal section and the inclined section of the extraction end, and an arc-shaped baffle plate is arranged in front of the press switch.

Furthermore, the screen and the screen of the keys are arranged on the upper surface of the rear section of the horizontal section, and the keys are arranged on the outer side wall of the rear section of the horizontal section.

Another object of the present invention is to provide a method for using an automatic quantitative amniotic fluid extraction device, which comprises the following steps:

(1) when in use, the round bottle is installed, and the volume of the amniotic fluid to be extracted is set through the screen and the keys;

(2) connecting the hose connecting port with a pipe interface;

(3) then, the amniotic fluid puncture needle is inserted into the amniotic fluid cavity, and the needle core is taken out;

(4) the other end of the hose is connected with the amniotic fluid puncture needle;

(5) holding the inclined section of the extraction end by one hand, and placing the forefinger at the position of the push switch;

(6) the other hand presses the start button;

(7) the micro water pump starts to work and extracts amniotic fluid;

(8) the micro liquid flow meter measures the volume of the pumped amniotic fluid;

(9) when the fetus approaches to the amniotic fluid puncture needle, the forefinger presses down the press switch, the micro-water pump stops working, and the amniotic fluid puncture needle is retracted to the space between the walls of the uterine muscles;

(10) when the fetus is far away from the amniotic fluid puncture needle, the amniotic fluid puncture needle is pushed forwards, the press switch is pressed again, and the micro-water pump continues to work;

(11) when the volume of the extracted amniotic fluid reaches a preset value, the micro water pump stops working;

(12) and then the device is taken down, thus completing the extraction of the amniotic fluid.

The invention has the beneficial effects that:

the invention designs an automatic quantitative amniotic fluid extraction device, wherein the front end of the device is provided with an amniotic fluid puncture needle which is used for puncturing into an amniotic fluid cavity, the amniotic fluid puncture needle is detachably connected with a hose, and the other end of the hose is provided with a connecting port which is detachably connected with a pipe joint; the interior of the pipe joint is connected to the water inlet end of a micro water pump through a pipeline, the micro water pump is used for pumping amniotic fluid, the water outlet end of the micro water pump is connected to a micro liquid flow meter and used for detecting the volume of the pumped amniotic fluid, the other end of the micro liquid flow meter is fixedly connected with a flow guide pipe, and the flow guide pipe extends into the round bottle and guides the pumped amniotic fluid into the round bottle; a press switch is arranged on the inner side of the intersection part of the horizontal section and the inclined section of the extraction end and used for stopping extraction at any time; each electronic element is controlled by a control circuit; has the following advantages: the volume of the extracted amniotic fluid can be set; automatic extraction; pausing at any time; the operation is simple; the work is stable; the workload of medical personnel and the operation risk brought by repeatedly replacing the syringe connected with the puncture needle are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used for describing the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic view, partially in section, of the present invention;

FIG. 4 is a diagram of the connection of circuit elements according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1. an extraction end; 101. a control circuit; 102. a micro liquid flow meter; 103. a micro water pump; 104. a screen and keys; 105. a push switch; 106. a power supply module; 107. a pipe joint; 2. a puncture end; 203. a amniotic fluid puncture needle; 3. a storage device; 301. round bottles; 302. and a flow guide pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 4, an automatic quantitative amniotic fluid extracting device includes a puncture end 2, an extracting end 1 and a storage device 3, and is characterized in that: the extraction end 1 comprises an integrally formed horizontal section and an inclined section forming an included angle of 75 degrees with the horizontal section, and the lower surface of the middle section of the horizontal section is detachably connected with the storage device 3; the front end of the extraction end 1 is provided with a pipe joint 107, and the puncture end 2 is detachably arranged on the pipe joint 107; the front end in the horizontal section of the extraction end 1 is fixedly provided with a micro water pump 103, the water outlet end of the micro water pump 103 is connected to a micro liquid flow meter 102, and the other end of the micro liquid flow meter 102 is fixedly connected with a flow guide pipe 302; the control circuit 101 is arranged in the rear section of the horizontal section, and the power supply module 106 is arranged in the inclined section.

The control circuit 101 is electrically connected with the micro liquid flow meter 102, the micro water pump 103, the screen and the key 104, the press switch 105 and the power supply module 106.

The storage device 3 is a transparent round bottle 301, the upper port of the storage device is connected with the extraction end 1 through threads, and the outer wall of the round bottle 301 is provided with volume scales; the round bottle 301 is made of heat preservation and insulation materials.

The middle section of the puncture end 2 is a hose 202, the front end of the hose 202 is detachably provided with an amniotic fluid puncture needle 203, and the rear section of the hose 202 is fixedly provided with a connecting port 201.

The press switch 105 is installed at the inner side of the intersection part of the horizontal section and the inclined section of the extraction end 1, and an arc-shaped baffle is arranged in front of the press switch 105.

The screen and the screen of the keys 104 are arranged on the upper surface of the rear section of the horizontal section, and the keys are arranged on the outer side wall of the rear section of the horizontal section.

Example 2

The invention designs an automatic quantitative amniotic fluid extraction device, the front end of the device is provided with an amniotic fluid puncture needle 203 for puncturing in an amniotic fluid cavity, the amniotic fluid puncture needle 203 is detachably connected with a hose 202, the other end of the hose 202 is provided with a connecting port 201, and the other end of the hose is detachably connected with a pipe joint 107; the pipe joint 107 is internally connected to the water inlet end of the micro water pump 103 through a pipeline, the micro water pump 103 is used for pumping amniotic fluid, the water outlet end of the micro water pump 103 is connected to the micro liquid flow meter 102 and is used for detecting the volume of the pumped amniotic fluid, the other end of the micro liquid flow meter 102 is fixedly connected with the flow guide pipe 302, the flow guide pipe 302 extends into the round bottle 301, and the pumped amniotic fluid is guided into the round bottle 301; a press switch 105 is arranged on the inner side of the intersection part of the horizontal section and the inclined section of the extraction end 1 and used for stopping extraction at any time; each electronic component is controlled by a control circuit 101; has the following advantages: the volume of the extracted amniotic fluid can be set; automatic extraction; pausing at any time; the operation is simple; the work is stable; the workload of medical staff is reduced, and the operation risk caused by repeatedly replacing the syringe connected with the puncture needle is reduced.

When in use, the round bottle 301 is installed, and the volume of the amniotic fluid to be extracted is set through the screen and the keys 104; connecting hose 202 to port 201 to a tubing interface; then, the amniotic fluid puncture needle 203 is punctured into the amniotic fluid cavity, and the needle core is taken out; the other end of the hose 202 is connected with an amniotic fluid puncture needle 203; holding the inclined section of the extraction end 1 with one hand and placing the index finger at the push switch 105; the other hand presses the start button; the micro water pump 103 starts to work to pump the amniotic fluid; the micro fluid flow meter 102 measures the volume of the pumped amniotic fluid; when the fetus approaches to the amniotic fluid puncture needle 203, the forefinger presses the press switch 105, the micro-water pump 103 stops working, and the amniotic fluid puncture needle 203 is retracted to the space between the walls of the uterine muscles; when the fetus is far away from the amniotic fluid puncture needle 203, the amniotic fluid puncture needle 203 is pushed forwards, the press switch 105 is pressed again, and the micro water pump 103 continues to work; when the volume of the extracted amniotic fluid is detected to reach a preset value, the micro water pump 103 stops working; and then the device is taken down, thus completing the extraction of the amniotic fluid.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Rather, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.