CN218247251U - Automatic negative pressure suction amniotic fluid device - Google Patents

Abstract

The utility model provides an automatic negative pressure amniotic fluid suction device, which comprises a puncture needle for inserting into the amniotic cavity; the vacuum test tube is internally provided with a vacuum for sucking and storing amniotic fluid; the two ends of the connecting conduit are respectively detachably connected with the puncture needle and the vacuum test tube; a sealing rubber plug is inserted into the port of the vacuum test tube, a cap is sleeved outside the port of the vacuum test tube, and a through hole is formed in the top end of the cap; connecting tube passes through the connector and communicates with each other with vacuum test tube is airtight, and the connector includes the plastic intubate and establishes at its tip and with the sealed piece that the through-hole matches, and connecting tube passes sealed piece and plastic intubate is airtight to communicate with each other, and the plastic intubate passes the through-hole to insert to locate on the sealing rubber stopper with vacuum test tube inside communicates with each other. The utility model can automatically suck amniotic fluid, saves time and labor, ensures the stability, accuracy and safety of amniotic fluid puncture, and improves the operation efficiency; make can be more zonulae occludens between vacuum test tube and the connecting conduit, guarantee that vacuum test tube lasts the negative pressure state, improve the amniotic fluid puncture art success rate.

Description

Automatic negative pressure suction amniotic fluid device

technical field

The utility model relates to the technical field of medical auxiliary equipment, in particular to an automatic negative pressure suction amniotic fluid device.

Background technique

Amniocentesis is currently the most commonly used prenatal diagnosis technique in fetal medicine centers and prenatal diagnosis institutions around the world. For pregnant women who need prenatal diagnosis of amniotic fluid, the doctor uses the amniocentesis needle to pass through the amniocentesis under the guidance of B-ultrasound. The abdominal wall, uterine wall and amniotic membrane of pregnant women enter the amniotic cavity, and the amniotic fluid is extracted for testing, and prenatal diagnosis of the fetus or evaluation of fetal organ function is performed.

At present, the traditional operation method is to use the amniocentesis puncture needle. After the puncture is successful, the operating doctor needs to fix the top of the puncture needle with the thumb and index finger of one hand, and the other hand-held syringe to connect the top port of the puncture needle (that is, the exit of the amniocentesis puncture needle). Pull the plunger of the syringe to continuously draw amniotic fluid samples under negative pressure, and an assistant is required to open the amniotic fluid collection tube to receive the amniotic fluid samples. Usually, each person draws 20-30ml of amniotic fluid for testing. During the peak hours of work, doctors collect 50-60 samples per day. After the puncture is successful, the operating doctor needs to hold the amniotic cavity intervening puncture needle with one finger all the time, and the other hand holds the syringe connected to the puncture needle interface to continuously extract amniotic fluid samples, and continue to exert force in one posture. The doctor repeats the above operations for a long time. Joints such as fingers, palms, elbows, and shoulders are tired and stiff, and the muscles in the corresponding parts are sore and strained. The doctor's fatigue and numbness will also easily affect the stability and accuracy of the operation, and even lead to operational errors or errors, affecting the safety of the operation. Vacuum blood collection tubes are also used in amniocentesis in the prior art, but how to tightly connect the amniocentesis needle with the vacuum blood collection tube so that the vacuum blood collection tube does not leak air and ensure a continuous negative pressure state is still a problem to be solved. question.

In summary, there is an urgent need to design an automatic negative pressure amniotic fluid suction device that overcomes the above-mentioned problems.

Utility model content

The purpose of this utility model is to provide an automatic negative pressure suction amniotic fluid device which overcomes the above-mentioned problems.

In order to achieve the above object, the technical solution adopted by the utility model is: an automatic negative pressure suction amniotic fluid device, comprising:

Puncture needle, which is used to insert into the amniotic cavity;

Vacuum tubes, with a vacuum inside, are used to draw and store amniotic fluid;

a connecting conduit, the two ends of which are respectively detachably connected to the puncture needle and the vacuum test tube;

Wherein, a sealing rubber plug is inserted into the port of the vacuum test tube, and a cap is provided over the port of the vacuum test tube, and a through hole is opened at the top of the cap;

The connecting conduit is airtightly communicated with the vacuum test tube through a connecting head, the connecting head includes a plastic intubation and a sealing block arranged at its end and matched with the through hole, and the connecting conduit passes through the sealing block It is airtightly communicated with the plastic intubation tube, the plastic intubation tube is inserted on the sealing rubber plug through the through hole, and communicates with the inside of the vacuum test tube.

The purpose of the utility model and the solution to its technical problems can also be further realized by adopting the following technical measures.

Further, the cap is threadedly connected to the outer wall of the vacuum test tube.

Further, the outer diameter of the plastic cannula gradually decreases from one end close to the sealing block to its end, and the plastic cannula is tapered.

Further, the outer wall of the sealing block is provided with external threads, and the inner wall of the through hole is provided with internal threads.

Further, the axes of the through hole, the plastic intubation and the sealing block are all coincident with the axis of the vacuum test tube, and the center of the outer surface of the sealing rubber plug is provided with a cylindrical positioning groove.

Further, a first sleeve is provided on the side of the sealing block away from the plastic intubation tube, and the connecting conduit is inserted into the first sleeve.

Further, the end of the puncture needle close to the connecting conduit is connected with a sleeve, and the liquid inlet end of the connecting conduit is provided with a joint matching the sleeve, and the joint is arranged in the sleeve and connected to the sleeve. The sleeves are connected by threads.

Further, a handle is provided on the outer wall of the sleeve close to the joint;

The puncture needle is also sheathed with a protective sleeve, and the protective sleeve is sleeved with the sleeve through a second sleeve arranged at the end thereof.

Further, the outer wall of the connecting conduit is provided with a stop clip.

Further, the stop clip includes a fixed splint and a movable splint arranged symmetrically up and down, the fixed splint is integrally connected with the right end of the movable splint, and its left end is detachably connected by a buckle. The front and rear sides of the fixed splint The walls are provided with positioning blocks, and the positioning blocks are provided with relief holes for the connecting conduits to pass through;

The opposite side walls of the fixed splint and the movable splint are provided with extruding blocks, the extruding blocks are arranged in the middle of the two relief holes, the inner diameter of the relief holes is smaller than the extrusion The width of the block in the left-right direction, when the left ends of the fixed splint and the movable splint are connected by buckles, the two extruded blocks are in conflict.

Compared with the prior art, the beneficial effects of the utility model are:

1. The automatic negative pressure amniotic fluid suction device of the present utility model connects the puncture needle to the vacuum test tube through the connecting catheter, and the negative pressure inside the vacuum test tube, when the puncture needle penetrates into the amniotic cavity of the patient, the negative pressure in the vacuum test tube The amniotic fluid can be sucked into the vacuum test tube from the puncture needle and the connecting catheter to realize the automatic suction of the amniotic fluid, which saves time and effort for the doctor's operation, ensures the stability, accuracy and safety of the amniocentesis, and improves the operation efficiency.

2. The automatic negative pressure amniotic fluid suction device of the present utility model is provided with a cap on the port of the vacuum test tube, a through hole is set on the cap, and a plastic intubation tube and a sealing block are set at the end of the connecting catheter. When the tube is inserted into the sealing rubber plug through the through hole and connected with the vacuum test tube, the sealing block is just inserted into the through hole, and the gap that may exist between the plastic intubation tube and the vacuum test tube is tightly covered to avoid air leakage in the vacuum test tube. The vacuum test tube and the connecting catheter can be connected more tightly, ensuring the continuous negative pressure state of the vacuum test tube, and improving the first-time success rate of amniocentesis.

3. The automatic negative pressure amniotic fluid suction device of the present utility model is provided with a flow-stop clip, which is convenient for doctors to replace the vacuum test tube for collecting an appropriate amount of amniotic fluid.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the automatic negative pressure suction amniotic fluid device provided by the utility model;

Fig. 2 is the enlarged schematic diagram of place A in Fig. 1;

Fig. 3 is the sectional structure schematic diagram of vacuum test tube and block cap junction in the utility model embodiment;

Fig. 4 is a schematic diagram of the overall structure of the flow stop clip in the embodiment of the present invention;

Explanation of reference signs:

1. Puncture needle; 11. Sleeve; 12. Handle; 13. Protective sleeve; 14. Second sleeve;

2. Vacuum test tube; 21. External thread; 22. Graduation line;

3. Connecting conduit; 31. Connector;

4. Sealing rubber plug; 41. Cylindrical positioning groove;

5, cap; 51, through hole; 511, internal thread;

6. Plastic intubation tube; 61. The first sleeve;

7. Seal block; 71. External thread;

8, flow stop clip; 81, fixed splint; 811, positioning block; 812, relief hole; 82, movable splint; 83, extruding block.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Please refer to Figure 1 to Figure 4, an automatic negative pressure amniotic fluid suction device, which includes:

Puncture needle 1, which is used to insert into the amniotic cavity;

Vacuum test tube 2, the inside of which is vacuum, is used to draw and store amniotic fluid;

A connecting conduit 3, the two ends of which are respectively detachably connected to the puncture needle 1 and the vacuum test tube 2;

Wherein, the port of the vacuum test tube 2 is inserted with a sealing rubber plug 4, and the port of the vacuum test tube 2 is provided with a cap 5, and the top of the cap 5 is provided with a through hole 51;

The connecting conduit 3 is airtightly communicated with the vacuum test tube 2 through a connecting head. The connecting head includes a plastic intubation tube 6 and a sealing block 7 arranged at its end and matching with the through hole 51. The connecting conduit 3 Pass through the sealing block 7 and communicate with the plastic intubation 6 airtightly, the plastic intubation 6 is inserted on the sealing rubber plug 4 through the through hole 51, and communicate with the inside of the vacuum test tube 2 . When the plastic intubation tube 6 is inserted on the sealing rubber plug 4 and communicates with the inside of the vacuum test tube 2, the sealing block 7 is just embedded in the through hole 51, and there may be a gap between the plastic intubation tube 6 and the vacuum test tube 2. The slits are tightly covered to prevent the vacuum test tube 2 from leaking.

When the utility model is in use, the puncture needle 1 is connected with the connecting conduit 3, and the plastic intubation tube 6 at the other end of the connecting conduit 3 is inserted into the sealing rubber plug 4 and communicated with the vacuum test tube 2 to ensure that the sealing block 7 is embedded in the through hole. Then, the puncture needle 1 is inserted into the amniotic cavity of the puerpera, and the amniotic fluid is sucked out by the negative pressure in the vacuum test tube 2 and stored in the vacuum test tube 2 .

In order to make the connection between the cap 5 and the vacuum test tube 2 tighter, the cap 5 is connected to the outer wall of the vacuum test tube 2 by threads.

Preferably, the outer diameter of the plastic insert 6 gradually decreases from one end close to the sealing block 7 to its end, and the plastic insert 6 is tapered.

In this embodiment, the plastic cannula 6 has a tapered shape with a large top and a small bottom. When it is gradually inserted into the sealing rubber plug 4, the connection between it and the sealing rubber plug 4 is tighter. Compared with the cylindrical shape, The gap between the two can be prevented from gradually becoming larger with the insertion thereof, the sealing performance can be ensured, and air leakage can be avoided.

Preferably, the outer wall of the sealing block 7 is provided with an external thread 71, and the inner wall of the through hole 51 is provided with an internal thread 511, and the sealing block 7 and the through hole 51 are connected by threads, so that the opposite surfaces of the two are more fit, The gap that may exist between the plastic intubation tube 6 and the vacuum test tube 2 can be effectively covered, further preventing the vacuum test tube 2 from leaking.

Preferably, the axes of the through hole 51, the plastic intubation 6 and the sealing block 7 coincide with the axis of the vacuum test tube 2, and the center of the outer surface of the sealing rubber plug 4 is provided with a cylindrical positioning groove 41, It is convenient for the plastic intubation tube 6 to penetrate into the center of the sealing rubber plug 4 to ensure the precise connection between the sealing block 7 and the through hole 51 .

Preferably, a first sleeve 61 is provided on a side of the sealing block 7 away from the plastic insert 6 , and the connecting conduit 3 is inserted into the first sleeve 61 . The doctor can hold the first sleeve 61 and insert the plastic intubation tube 6 into the sealing rubber plug 4 for easy connection.

As shown in Figure 1, the end of the puncture needle 1 close to the connecting conduit 3 is connected with a sleeve 11, and the liquid inlet end of the connecting conduit 3 is provided with a joint 31 matching the sleeve 11. 31 is arranged in the sleeve 11 and is connected with the sleeve 11 through threads.

In order to facilitate the operation of the puncture needle 1 held by the doctor, a handle 12 is provided on the outer wall of the cannula 11 near the joint 31;

In order to protect the puncture needle 1 , the puncture needle 1 is sheathed with a protective sleeve 13 , and the protective sleeve 13 is socketed with the sleeve 11 through a second sleeve 14 at its end.

In order to make it easier for the doctor to replace the vacuum test tube 2 or cut off the flow before taking out the puncture needle 1 , the outer wall of the connecting conduit 3 is provided with a flow-stop clip 8 . The outer wall of the vacuum test tube 2 is provided with a scale line 21, which is convenient for doctors to read the amount of amniotic fluid collected.

As shown in Figure 4, the stop clip 8 includes a fixed splint 81 and a movable splint 82 arranged symmetrically up and down, the fixed splint 81 is integrally connected with the right end of the movable splint 82, and its left end is detachably connected by a buckle. Positioning blocks 811 are provided on the front and rear side walls of the fixing splint 81, and the positioning blocks 811 are provided with relief holes 812 for the connecting conduit 3 to pass through;

The opposite side walls of the fixed splint 81 and the movable splint 82 are provided with extruding blocks 83, and the extruding blocks 83 are arranged in the middle of the two relief holes 812. The inner diameter is smaller than the width of the extruding block 83 in the left-right direction, and when the left ends of the fixed splint 81 and the movable splint 82 are connected by buckles, the two extruding blocks 83 are in conflict.

In this embodiment, the connecting catheter 3 passes through the two give way holes 812. During the amniotic fluid collection process, the buckle connection ends of the fixed splint 81 and the movable splint 82 are not connected. At this time, the amniotic fluid can pass through the connecting catheter 3 When the doctor replaces the vacuum test tube 2 or before taking out the puncture needle 1, he connects the movable ends of the fixed splint 81 and the movable splint 82 through buckles. At this time, the upper and lower extrusion blocks 83 just conflict, and the The connecting conduit 3 is extruded to realize the cut-off. After changing the vacuum test tube 2, the movable ends of the fixed splint 81 and the movable splint 82 are opened.

The utility model has been further described above in conjunction with the embodiments, but the utility model is not limited to the above-mentioned embodiment, within the scope of knowledge possessed by those of ordinary skill in the art, it can also be used without departing from the purpose of the utility model. Make various changes.

Claims (10)

1. an automatic negative pressure suction amniotic fluid device, is characterized in that, it comprises: A puncture needle (1), which is used to insert into the amniotic cavity; A vacuum test tube (2), the inside of which is vacuum, is used to draw and store amniotic fluid; a connecting conduit (3), the two ends of which are respectively detachably connected to the puncture needle (1) and the vacuum test tube (2); Wherein, a sealing rubber plug (4) is inserted into the port of the vacuum test tube (2), and a cap (5) is provided outside the port of the vacuum test tube (2), and a through hole is opened on the top end of the cap (5). (51); The connecting conduit (3) is airtightly communicated with the vacuum test tube (2) through a connector, and the connector includes a plastic cannula (6) and a seal at its end that matches the through hole (51). block (7), the connecting conduit (3) passes through the sealing block (7) and communicates airtightly with the plastic cannula (6), and the plastic cannula (6) passes through the through hole (51) It is inserted on the sealing rubber stopper (4) and communicates with the inside of the vacuum test tube (2). 2. The automatic negative pressure suction amniotic fluid device according to claim 1, characterized in that, the outer wall of the cap (5) and the vacuum test tube (2) is threadedly connected. 3. The automatic negative pressure suction amniotic fluid device according to claim 1, characterized in that, the outer diameter of the plastic intubation tube (6) gradually decreases from an end close to the sealing block (7) to its end. Small, the plastic intubation tube (6) is tapered. 4. The automatic negative pressure suction amniotic fluid device according to claim 1, characterized in that, the outer wall of the sealing block (7) is provided with an external thread (71), and the inwall of the through hole (51) is provided with an internal thread. Thread (511). 5. automatic negative pressure suction amniotic fluid device according to claim 1, is characterized in that, the axial center of described through hole (51), plastic intubation tube (6) and sealing block (7) is all with described vacuum test tube The axis centers of (2) coincide, and the center of the outer surface of the sealing rubber plug (4) is provided with a cylindrical positioning groove (41). 6. The automatic negative pressure suction amniotic fluid device according to claim 1, characterized in that, the sealing block (7) is provided with a first sleeve (61) on the side away from the plastic intubation tube (6), The connecting conduit (3) is inserted into the first sleeve (61). 7. The automatic negative pressure suction amniotic fluid device according to claim 1, characterized in that, the end of the puncture needle (1) near the connecting conduit (3) is connected with a sleeve (11), and the connecting conduit The liquid inlet end of (3) is provided with the joint (31) that matches with described sleeve pipe (11), and described joint (31) is arranged in described sleeve pipe (11) and is threaded with this sleeve pipe (11). connect. 8. The automatic negative pressure suction amniotic fluid device according to claim 7, characterized in that: A handle (12) is provided on the outer wall of the sleeve (11) close to the joint (31); The puncture needle (1) is also covered with a protective sleeve (13), and the protective sleeve (13) is sleeved with the sleeve (11) through the second sleeve (14) arranged at its end. catch. 9. The automatic negative pressure suction amniotic fluid device according to claim 1, characterized in that, the outer wall of the connecting conduit (3) is provided with a stop clip (8). 10. The automatic negative pressure suction amniotic fluid device according to claim 9, characterized in that: The stop clip (8) includes a fixed splint (81) and a movable splint (82) arranged symmetrically up and down, the fixed splint (81) and the right end of the movable splint (82) are integrally connected, and the left end of the fixed splint (81) is connected by a buckle Detachable connection, the front and rear side walls of the fixed splint (81) are provided with positioning blocks (811), and the positioning blocks (811) are provided with relief holes for the connecting conduit (3) to pass through (812); The opposite side walls of the fixed splint (81) and the movable splint (82) are provided with extruding blocks (83), and the extruding blocks (83) are arranged in the two relief holes (812) The inner diameter of the relief hole (812) is smaller than the width of the extruding block (83) in the left and right direction, and the left end of the fixed splint (81) and the movable splint (82) are connected by a buckle , the two extruding blocks (83) collide.

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