CN209595785U - Amniotic fluid sample harvester - Google Patents

Abstract

The utility model discloses an amniotic fluid sample collector, which aims to solve the problem that the amniotic fluid is easily polluted and affects follow-up detection by adopting the existing collection technology. The utility model includes a puncture needle, an indwelling sleeve, a catheter and an amniotic fluid sampling bottle. The needle is detachably installed in the indwelling cannula, the liquid block is inserted on the puncture needle, and the end of the indwelling cannula near the tip of the puncture needle is provided with an indwelling sleeve for fixing on the amniotic fluid membrane. The utility model can realize that the amniotic fluid is directly introduced into the amniotic fluid collection bottle from the amniotic membrane hole, so that the whole process is fully enclosed and sterile.

Description

amniotic fluid sample collector

technical field

The utility model relates to the field of obstetrics and gynecology instruments, in particular to an amniotic fluid sample collector.

Background technique

At present, amniotic fluid examination is mostly carried out in the third trimester of pregnancy, and amniotic fluid is taken for examination through amniocentesis. The examination is to judge the maturity of the fetus and the blood type of the suspected mother and child. The amniotic fluid sample is centrifuged at 1000~2000r/min for 10min, and the supernatant is taken for biochemical examination. At present, the commonly used method in clinical practice is No. 7 syringe needle. After routine vulva disinfection, the doctor wears sterile gloves and enters the vagina to puncture the amniotic membrane to observe the shape and amount of amniotic fluid. At the same time, the other hand uses a syringe in the vagina to extract amniotic fluid for culture.

Chinese Patent Announcement No. CN201120382082.2, the name of the utility model is amniotic fluid collector, the application discloses a kind of amniotic fluid collector, including rupture needle and drainage tube, at the end of the drainage tube is provided with switch valve, on the switch valve there is Negative pressure tube, an elastic arm is arranged at the root of the rupture needle, and a handle is arranged at the end of the elastic arm. The amniotic needle punctures the amniotic membrane and the amniotic fluid is drained into the drainage tube. It solves the problem of not being able to collect fresh amniotic fluid, but has the possible disadvantage that the collected amniotic fluid will be contaminated.

Utility model content

The utility model overcomes the disadvantage that the amniotic fluid is easily polluted when the amniotic fluid is collected by the existing amniotic fluid collector, and provides an amniotic fluid specimen collector, which can directly import the amniotic fluid from the amniotic membrane hole into the amniotic fluid collection bottle, so that the whole The process is fully enclosed and sterile.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

An amniotic fluid specimen collector, comprising a puncture needle, an indwelling sleeve, a catheter and an amniotic fluid sampling bottle, the indwelling sleeve is connected and communicated with an amniotic fluid guiding branch, the amniotic fluid guiding branch is connected to a catheter, and the indwelling sleeve is fastened with an elastic seal The liquid block and the puncture needle are detachably installed in the indwelling sleeve, the liquid block is inserted on the puncture needle, and the end of the indwelling sleeve near the tip of the puncture needle is provided with an indwelling sleeve for fixing on the amniotic membrane.

Install the puncture needle inside the indwelling cannula, and fix the puncture needle with the indwelling sleeve of the indwelling cannula and the liquid block at the end of the indwelling cannula away from the indwelling cannula respectively. This length is longer than the No. 7 puncture needle currently used. According to the experience of front-line staff, it is better and easier to operate. When the amniotic membrane is punctured until the indwelling mouthpiece is fixed on the amniotic membrane, the puncture needle is pulled out backward while the indwelling mouthpiece is still fixed on the amniotic membrane. After the puncture needle is pulled out, the elastic sealing fluid block will self-heal and fill the needle hole. The amniotic fluid directly enters the indwelling mouthpiece of the indwelling cannula, and then flows into the amniotic fluid guiding branch, catheter, and amniotic fluid sampling bottle. The utility model is not only used for collecting amniotic fluid for detection, but also can be used for membrane rupture operation when manual membrane rupture is required due to labor process reasons in the delivery process.

Preferably, the diameter of the indwelling sleeve gradually decreases from one end away from the mouth to the other end. The diameter of the tip of the indwelling mouthpiece is similar to the diameter of the puncture needle, and the structure of the indwelling mouthpiece is small at the front and large at the back to help it puncture and stay on the amniotic membrane.

Preferably, the end of the puncture needle away from the tip is connected with a puncture needle handle. Adding a puncture needle handle is convenient for operators to use.

Preferably, the handle of the puncture needle includes an end cap connected to the end of the puncture needle and a sheet connected to the end cap. The sheet has an L-shaped structure, and the outward contour of the end of the sheet is an arc. Transition through arcs. The end of the sheet body is the part that is kneaded by human fingers, and the corner position of the sheet body is the part where the heel of the human palm abuts. This design will make the hand hold more stable and facilitate the operation of the operator.

Preferably, a liquid pipe is connected between the catheter and the amniotic fluid sampling bottle, and the liquid pipe is provided with several branch pipes communicating with the liquid pipe, and the branch pipes are connected with the amniotic fluid sampling bottle. The detection of amniotic fluid often needs to pass several detection items, so multiple amniotic fluid detection bottles are required. Several amniotic fluid sampling bottles connected through the liquid separation tube can avoid the liquid separation process in the detection process, and the operation is simple and unnecessary waste can be avoided. Pollution.

As a preference, the opening of the amniotic fluid sampling tube connecting catheter is equipped with a septum seat, and several valves are evenly arranged on the periphery of the septum seat, the edges of the two valves overlap, and the ends of all valves overlap. inside the sample bottle. The valves overlap with each other, and the catheter is inserted into the septum seat. When the catheter is pulled out, the valve will re-form a seal to prevent external bacteria from entering and contaminating the amniotic fluid.

Preferably, the bottle body of the amniotic fluid sampling bottle is made of transparent material, and the bottle body of the amniotic fluid sampling bottle is provided with a scale for counting the amount of amniotic fluid. The bottle body made of transparent material can help the operator know the amount of amniotic fluid in the amniotic fluid sampling bottle, and the scale can help the operator accurately determine whether the sample volume is sufficient.

Preferably, the amniotic fluid sampling bottle is provided with a piston for forming negative pressure. The front part of the amniotic fluid sampling bottle is connected with a catheter and closed, and the rear end is connected with a piston, which can form a negative pressure through the pulling of the piston to introduce the amniotic fluid.

Compared with the prior art, the utility model has the following beneficial effects: (1) The whole sampling process is completely closed, avoiding the possibility of bacteria entering the amniotic fluid and causing pollution; (2) After the sampling operation is completed, the amniotic fluid sampling bottle has less opportunities to communicate with the outside world , can maintain a sterile state.

Description of drawings

Fig. 1 is the schematic diagram of the utility model;

Fig. 2 is the schematic diagram of the amniotic fluid sampling bottle connected with liquid pipe, septum seat and piston of the utility model;

Fig. 3 is a plan view of the bacteria seat of the utility model;

In the figure: 1. Puncture needle, 1.1. Handpiece of puncture needle, 1.11. End cap, 1.12. Sheet body,

2. Indwelling cannula, 2.1. Amniotic fluid guide tube, 2.2. Sealing liquid block, 2.3. Indwelling sleeve,

3. Conduit, 3.1. Dispensing tube, 3.11. Branch tube,

4. Amniotic fluid sampling bottle, 4.1. septum seat, 4.11. valve, 4.2. piston.

Detailed ways

Below by specific embodiment, in conjunction with accompanying drawing, the technical scheme of the utility model is described further in detail:

Embodiment 1: An amniotic fluid sample collector, as shown in Figure 1, includes a puncture needle 1, an indwelling sleeve 2, a catheter 3 and an amniotic fluid sampling bottle 4. The indwelling sleeve is connected and communicated with an amniotic fluid guiding branch 2.1, and an amniotic fluid guiding branch Connect the catheter, the indwelling cannula is fastened with an elastic sealing liquid block 2.2, the puncture needle is detachably installed in the indwelling cannula, the liquid sealing block is inserted on the puncture needle, and the end of the indwelling cannula is close to the tip of the puncture needle An indwelling mouthpiece 2.3 for fixing on the amniotic membrane is provided. The diameter of the indwelling sleeve gradually decreases from one end away from the mouth to the other end. As shown in Fig. 2, the end of the puncture needle away from the tip is connected with a puncture needle handle 1.1. The handle part of the puncture needle includes an end cap connected to the end of the puncture needle and a sheet connected to the end cap. The sheet has an L-shaped structure, and the outward contour of the end of the sheet is an arc, and the corner of the sheet passes through the arc. transition. A liquid pipe 3.1 is also connected between the catheter and the amniotic fluid sampling bottle. The liquid pipe is provided with a number of branch pipes 3.11 connected with the liquid pipe. The branch pipes are connected with the amniotic fluid sampling bottle. As shown in Figure 3, the opening of the amniotic fluid sampling tube connecting catheter is equipped with a septum seat 4.1, and several valves 4.11 are evenly arranged on the periphery of the septum seat. The edges of the two valves overlap, and the ends of all valves overlap. The seat is inserted in the amniotic fluid sampling bottle. The bottle body of the amniotic fluid sampling bottle is made of transparent material, and the bottle body of the amniotic fluid sampling bottle is provided with a scale for counting the amount of amniotic fluid. The amniotic fluid sampling bottle is provided with a piston 4.2 for forming negative pressure.

Install the puncture needle inside the indwelling cannula, and fix the puncture needle with the indwelling sleeve of the indwelling cannula and the liquid block at the end of the indwelling cannula away from the indwelling cannula respectively. This length is longer than the No. 7 puncture needle currently used, and it is more convenient for puncture operation according to the experience of front-line staff. When the amniotic membrane is punctured until the indwelling mouthpiece is fixed on the amniotic membrane, the puncture needle is pulled out backward while the indwelling mouthpiece is still fixed on the amniotic membrane. After the puncture needle is pulled out, the elastic sealing fluid block will self-heal and fill the needle hole. The amniotic fluid directly enters the indwelling mouthpiece of the indwelling cannula, and then flows into the amniotic fluid guiding branch, catheter, and amniotic fluid sampling bottle. The utility model is not only used for collecting amniotic fluid for detection, but also can be used for membrane rupture operation when manual membrane rupture is required due to labor process reasons in the delivery process. The diameter of the tip of the indwelling mouthpiece is similar to the diameter of the puncture needle, and the structure of the indwelling mouthpiece is small at the front and large at the back to help it puncture and stay on the amniotic membrane. Adding a puncture needle handle is convenient for operators to use. The end of the sheet body is the part that is kneaded by human fingers, and the corner position of the sheet body is the part where the heel of the human palm abuts. This design will make the hand hold more stable and facilitate the operation of the operator. The detection of amniotic fluid often needs to pass several detection items, so multiple amniotic fluid detection bottles are required. Several amniotic fluid sampling bottles connected through the liquid separation tube can avoid the liquid separation process in the detection process, and the operation is simple and unnecessary waste can be avoided. Pollution. The valves overlap with each other, and the catheter is inserted into the septum seat. When the catheter is pulled out, the valve will re-form a seal to prevent external bacteria from entering and contaminating the amniotic fluid. The bottle body made of transparent material can help the operator know the amount of amniotic fluid in the amniotic fluid sampling bottle, and the scale can help the operator accurately determine whether the sample volume is sufficient. The front part of the amniotic fluid sampling bottle is connected with a catheter and closed, and the rear end is connected with a piston, which can form a negative pressure through the pulling of the piston to introduce the amniotic fluid.

The above-described embodiment is only a preferred solution of the utility model, and does not limit the utility model in any form. There are other variations and improvements without exceeding the technical solution described in the claims. type.

Claims (8)

1. An amniotic fluid specimen collector, characterized in that, comprises a puncture needle, an indwelling sleeve, a catheter and an amniotic fluid sampling bottle, the indwelling sleeve is connected and communicated with an amniotic fluid guide arm, and the amniotic fluid guide arm is connected to a catheter, and is fastened in the indwelling sleeve An elastic liquid-sealing block is installed, and the puncture needle is detachably installed in the indwelling sleeve, the liquid-sealing block is inserted on the puncture needle, and the end of the indwelling sleeve near the tip of the puncture needle is provided with a retainer for fixing on the amniotic fluid membrane. Mouth. 2 . The amniotic fluid sample collector according to claim 1 , wherein the diameter of the indwelling sleeve mouth gradually decreases from one end away from the mouth to the other end. 3 . 3. The amniotic fluid sample collector according to claim 2, wherein the end of the puncture needle away from the tip is connected with a puncture needle handle. 4. The amniotic fluid specimen collector according to claim 3, wherein the puncture needle handle comprises an end cap connected to the end of the puncture needle and a sheet connected to the end cap, the sheet is an L-shaped structure, and the sheet The outer contour line of the end is a circular arc, and the corner of the sheet body is transitioned through a circular arc. 5. the amniotic fluid sample collector according to claim 1, is characterized in that, between catheter and amniotic fluid sampling bottle, is also connected with liquid pipe, is provided with some branch pipes that communicate with liquid pipe on the liquid pipe, branch pipe and amniotic fluid Sample bottle connection. 6. the amniotic fluid specimen collector according to claim 5, is characterized in that, the opening of the amniotic fluid sampling tube connecting conduit is provided with a bacteria-separating seat, and the bacteria-separating seat circumference is evenly arranged with several valves, and the edges overlap between the two valves, all The ends of the valves are overlapped, and the branch tube is inserted into the amniotic fluid sampling bottle through the septum seat. 7. The amniotic fluid specimen collector according to any one of claims 1 to 6, wherein the body of the amniotic fluid sampling bottle is made of transparent material, and the body of the amniotic fluid sampling bottle is provided with a scale for counting the amount of amniotic fluid. 8. The amniotic fluid sample collector according to claim 1, wherein a piston for forming a negative pressure is provided on the amniotic fluid sampling bottle.