Sterile amniotic fluid taking device

Abstract

The utility model discloses a sterile amniotic fluid taking device which aims at solving the technical problems that in the prior art, amniotic fluid sampling is difficult, potential pollution hazards exist, and amniotic fluid detection accuracy is prone to being affected. The amniotic fluid taking device comprises a guide pipe, a first connector is installed at the left end of the guide pipe, a second connector is slidably installed outside the first connector, a sterile rubber cylinder is installed at the left end of the second connector, a water channel is formed in the guide pipe, and a water pumping connector is installed on the outer surface of the left end of the guide pipe and communicates with the water channel; by means of the design, amniotic fluid enters the catheter and flows on the surface of the isolating membrane to enter the water channel, the head of the catheter is scoured through flowing of the amniotic fluid, pollution caused by follow-up sampling is avoided, pollution during sampling can be avoided, pollution caused when a swab enters or is taken out can be avoided, and sterile sampling can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical appliances, and particularly relates to a sterile amniotic fluid taking device. BACKGROUND

[0002] There is a larger fetus and amniotic fluid in the uterus of a pregnant woman, and various medical examinations need to be improved for the pregnant woman with early rupture of membranes before term, suspected intrauterine infection and fever during delivery, and amniotic fluid detection is one of commonly used detections, under the prior art, amniotic fluid sampling is difficult and has hidden dangers of pollution, and the accuracy of amniotic fluid detection is easily affected, therefore, a novel sterile amniotic fluid taking device is designed to change the above technical defects. SUMMARY

[0003] (1) Technical problem to be solved

[0004] In view of the defects of the prior art, the utility model aims at providing a sterile amniotic fluid taking device, which aims at solving the technical problems that amniotic fluid sampling is difficult and has hidden dangers of pollution under the prior art, and the accuracy of amniotic fluid detection is easily affected.

[0005] (2) Technical scheme

[0006] In order to solve the above technical problems, the utility model provides a sterile amniotic fluid taking device, which comprises a catheter, a first connecting head is installed at the left end of the catheter, a second connecting head is slidably installed outside the first connecting head, a sterile rubber cylinder is installed at the left end of the second connecting head, a water channel is formed in the inside of the catheter, a water pumping connector is installed on the outer surface of the left end of the catheter and communicates with the water channel, an isolation film is installed in the inside of the right end of the catheter, an I-shaped sealing pipe is installed in the inside of the catheter, an elastic ring is installed on the outer surface of the middle part of the I-shaped sealing pipe, a guide wire is arranged in the inside of the catheter and is fixedly connected with the inner wall of the sterile rubber cylinder at the left end, a sampling swab brush head is installed at the right end of the guide wire, and a thread is arranged at the end, away from the catheter, of the water pumping connector.

[0007] When the amniotic fluid taking device is used, the threaded port syringe is screwed onto the water taking connector to fix, the right end of the catheter is inserted into the pregnant woman's vagina between the fetal head and the internal orifice of the cervix, then the threaded port syringe is used to take, if the amniotic fluid is successfully taken, it indicates that the catheter is inserted in the correct position, the threaded port syringe of the catheter takes the amniotic fluid, the amniotic fluid flows into the inside of the catheter and on the surface of the isolation film into the water channel, the amniotic fluid flow plays a flushing effect on the catheter head, avoiding the pollution of the subsequent sampling, then the left end of the guide wire is held to push the sampling swab brush head to the catheter head, the sampling swab brush head passes through the I-shaped sealing tube and breaks the isolation film to pass out of the catheter, the elastic ring is in the open state, the sampling swab brush head dips the amniotic fluid to complete the sampling, then the guide wire is pulled to retract the sampling swab brush head, the sampling swab brush head passes through the I-shaped sealing tube into the catheter below the I-shaped sealing tube, under the action of the elasticity of the elastic ring, the I-shaped sealing tube is closed and sealed, the sterile rubber cylinder, the second connector and the first connector are used in cooperation to seal the left end of the catheter, the sampling swab brush head is in a sealed sterile state, the catheter and the sampling swab brush head are taken out completely, the sampling swab brush head is sent for detection, the pollution during sampling can be avoided, the pollution when the swab enters or is taken out can be avoided, and the sterile sampling can be ensured.

[0008] Preferably, the right end of the catheter is provided with a plug, and the end of the plug away from the catheter is arc-shaped. Through the setting of the plug, the resistance of the catheter before being inserted into the pregnant woman's body is reduced, and the catheter is conveniently inserted.

[0009] Further, the left end of the sterile rubber cylinder is provided with a handle, and the outer surface of the handle is provided with anti-skid lines. Through the setting of the handle, the user can conveniently hold the left end of the guide wire to operate, and the hand of the user is prevented from slipping when the user holds the guide wire to operate.

[0010] Still further, the outer surface of the water taking connector is provided with an anti-skid strip, and the material of the anti-skid strip is silica gel. Through the setting of the anti-skid strip, the friction between the hand of the user and the water taking connector is increased, and the stability of the user when holding the water taking connector to operate is increased.

[0011] Still further, the material of the guide wire is nickel-titanium memory alloy. Through the setting of the nickel-titanium memory alloy guide wire, the guide wire has reliable twist control and pushability, and the guide wire is conveniently used.

[0012] (3) Beneficial effects

[0013] Compared with the prior art, the beneficial effects of the present application are as follows:

[0014] This invention involves fixing a threaded syringe to a suction connector, inserting the right end of the catheter into the vagina between the fetal head and the internal cervical os, and then using the threaded syringe to draw amniotic fluid. Successful amniotic fluid extraction indicates correct catheter placement. The amniotic fluid enters the catheter and flows through the water channel on the surface of the isolation membrane. This flow flushes the catheter head, preventing contamination during subsequent sampling. Next, the left end of the guidewire is grasped, and the sampling swab head is pushed towards the catheter head. The sampling swab head passes through the H-shaped sealing tube, breaks the isolation membrane, and exits the catheter. The elastic ring... In the open position, the sampling swab head dips into amniotic fluid to complete the sampling. Then, pulling the guide ribbon retracts the sampling swab head, which passes through the H-shaped sealing tube and enters the catheter below it. Under the action of the elastic ring, the H-shaped sealing tube closes and seals. Using a sterile rubber tube, a second connector, and a first connector, the left end of the catheter is sealed, ensuring that the sampling swab head is in a sealed and sterile state. The catheter and sampling swab head are then completely removed, and the sampling swab head is sent for testing. This process avoids contamination during sampling and contamination during swab entry or removal, ensuring sterile sampling. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the amniotic fluid collection device of this utility model;

[0016] Figure 2 This utility model relates to an amniotic fluid collection device. Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the amniotic fluid extraction device catheter of this utility model;

[0018] Figure 4 This utility model relates to an amniotic fluid collection device. Figure 3 Enlarged structural diagram at point B;

[0019] Figure 5 This is a three-dimensional structural diagram of the amniotic fluid collection device handle, sterile rubber tube, and second connector of this utility model.

[0020] The labels in the attached diagram are as follows: 1. catheter; 2. plug; 3. handle; 4. sterile rubber tube; 5. second connector; 6. first connector; 7. anti-slip strip; 8. water pump connector; 9. guide wire; 10. water channel; 11. sampling swab brush head; 12. I-shaped sealing tube; 13. elastic ring; 14. isolation membrane. Detailed Implementation

[0021] This specific embodiment is a sterile amniotic fluid retrieval device, the structural diagram of which is shown below. Figures 1-5As shown, the amniotic fluid collection device includes a catheter 1, a first connector 6 installed at the left end of the catheter 1, a second connector 5 slidably installed on the outside of the first connector 6, and a sterile rubber cylinder 4 installed at the left end of the second connector 5. A water channel 10 is opened inside the catheter 1. A water suction connector 8 is installed on the outer surface of the left end of the catheter 1 and is connected to the water channel 10. An isolation membrane 14 is installed inside the right end of the catheter 1. An I-shaped sealing tube 12 is installed inside the catheter 1, and an elastic ring 13 is installed on the outer surface of the middle part of the I-shaped sealing tube 12. A guide wire 9 is provided inside the catheter 1, and the left end of the guide wire 9 is fixedly connected to the inner wall of the sterile rubber cylinder 4. A sampling swab brush head 11 is installed at the right end of the guide wire 9. The end of the water suction connector 8 away from the catheter 1 is threaded.

[0022] The catheter 1 has a plug 2 installed at its right end, with the end of the plug 2 furthest from the catheter 1 being arc-shaped. The plug 2 reduces the resistance to insertion of the catheter 1 into the pregnant woman's body, making insertion easier. The sterile rubber cylinder 4 has a handle 3 installed at its left end, with anti-slip textured surfaces. The handle 3 allows the user to easily grip the left end of the guidewire 9, preventing slippage. The flushing connector 8 has anti-slip strips 7 made of silicone on its outer surface. These strips increase friction between the user's hand and the flushing connector 8, improving stability when gripping it.

[0023] Furthermore, the guidewire 9 is made of nickel-titanium shape memory alloy. The nickel-titanium shape memory alloy guidewire 9 provides reliable torsion control and pushability, facilitating its use.

[0024] Working principle: When using the amniotic fluid retrieval device of this technical solution, the threaded syringe is screwed onto the suction connector 8 for fixation. The right end of the catheter 1 is inserted from the pregnant woman's vagina between the fetal head and the internal cervical os. Then, the threaded syringe is used to draw amniotic fluid. If the amniotic fluid is successfully drawn, it indicates that the catheter 1 is inserted in the correct position. The amniotic fluid enters the interior of the catheter 1 and flows into the water channel 10 on the surface of the isolation membrane 14. The flow of amniotic fluid has a flushing effect on the head of the catheter 1, avoiding contamination for subsequent sampling. Then, the left end of the guide wire 9 is grasped and the sampling swab brush head 11 is pushed towards the head of the catheter 1. The sampling swab brush head 11 passes through the H-shaped sealing tube 12 and breaks through the isolation membrane 14 to exit the catheter 1. The elastic ring 13 is in an open state, allowing the sampling swab brush head 11 to absorb amniotic fluid for sampling. Then, the guide wire 9 is pulled to retract the sampling swab brush head 11. The sampling swab brush head 11 passes through the H-shaped sealing tube 12 and enters the catheter 1 below the H-shaped sealing tube 12. Under the elastic force of the elastic ring 13, the H-shaped sealing tube 12 is closed and sealed. The sterile rubber tube 4, the second connector 5, and the first connector 6 are used to seal the left end of the catheter 1, ensuring that the sampling swab brush head 11 is in a sealed and sterile state. The catheter 1 and the sampling swab brush head 11 are completely removed and sent for testing. This process avoids contamination during sampling and contamination when the swab enters or is removed, ensuring sterile sampling.

[0025] All technical features in this embodiment can be freely combined according to actual needs.

[0026] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A sterile amniotic fluid retrieval device, comprising a catheter (1), characterized in that: The left end of the catheter (1) is equipped with a first connector (6), and a second connector (5) is slidably installed on the outside of the first connector (6). A sterile rubber tube (4) is installed on the left end of the second connector (5). A water channel (10) is opened inside the catheter (1). A water pumping connector (8) is installed on the outer surface of the left end of the catheter (1), and the water pumping connector (8) is connected to the water channel (10). An isolation membrane (14) is installed inside the right end of the catheter (1). An I-shaped sealing tube (12) is installed inside the catheter (1), and an elastic ring (13) is installed on the outer surface of the middle part of the I-shaped sealing tube (12). A guide wire (9) is provided inside the catheter (1), and the left end of the guide wire (9) is fixedly connected to the inner wall of the sterile rubber tube (4). A sampling swab brush head (11) is installed on the right end of the guide wire (9).

2. The aseptic amniotic fluid collection device according to claim 1, characterized in that: A plug (2) is installed at the right end of the conduit (1), and the end of the plug (2) away from the conduit (1) is arc-shaped.

3. The aseptic amniotic fluid collection device according to claim 2, characterized in that: The sterile rubber cylinder (4) is equipped with a handle (3) at its left end, and the outer surface of the handle (3) is provided with anti-slip texture.

4. The aseptic amniotic fluid collection device according to claim 3, characterized in that: The outer surface of the water pump connector (8) is provided with anti-slip strips (7), and the anti-slip strips (7) are made of silicone.

5. The aseptic amniotic fluid collection device according to claim 4, characterized in that: The end of the pumping connector (8) away from the conduit (1) is threaded.

6. The aseptic amniotic fluid collection device according to claim 5, characterized in that: The guide wire (9) is made of nickel-titanium shape memory alloy.

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