Disposable human serous cavity effusion puncture bag

Abstract

The utility model relates to the technical field of medical instruments, in particular to a disposable human serous cavity effusion puncture bag, which comprises a catheter, a puncture needle, an injector and an effusion collection bag, the catheter at least comprises three branch tubes, namely a first branch tube connected with the puncture needle, a second branch tube connected with the injector and a third branch tube connected with the effusion collection bag, the first branch pipe, the second branch pipe and the third branch pipe are connected with three connectors of the communication valve respectively, the communication valve is used for enabling the second branch pipe to be communicated with the first branch pipe or the third branch pipe and preventing the first branch pipe from being communicated with the third branch pipe, and a check valve is arranged on the first branch pipe. The problems that an existing disposable disinfection puncture bag is tedious in operation, long in suction time, prone to causing complications such as pneumothorax and high in infection risk can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a disposable human serous cavity effusion puncture bag. Background Art

[0002] Serous cavity effusion refers to the excessive fluid accumulated in the pleural cavity, abdominal cavity or pericardial cavity (collectively referred to as the serous cavity) under the condition of disease. Serous cavity effusion is a common clinical manifestation. When this clinical manifestation occurs clinically, it is often necessary to extract the effusion to find the cause of the disease, relieve clinical symptoms, and treat the serous cavity effusion. The commonly used method for extracting serous cavity effusion clinically is to perform serous cavity effusion puncture, and the common ones include: thoracentesis, abdominal puncture, and pericardial puncture. At present, serous cavity effusion puncture is usually performed with a disposable sterile puncture kit, which is mainly composed of a syringe, a rubber tube, and a puncture needle connected in sequence. However, the prior art still has the following technical problems:

[0003] 1. When the patient has a lot of fluid accumulation in the body, the syringe cannot drain the fluid in the body at one time. Each time a syringe is filled, the rubber tube needs to be clamped with a hemostatic forceps, and then the syringe is removed. The operation is cumbersome and the suction time is long. This process may cause gas to enter the pleural cavity, resulting in complications such as pneumothorax;

[0004] 2. The aspirated serous cavity effusion is usually temporarily placed in an open container, which can easily generate aerosols during the syringe injection process, leading to nosocomial infection, especially tuberculosis infection; during the medical waste disposal process, the effusion is easy to spill, posing a high risk of infection.

[0005] 3. When the existing puncture needle is used to draw out the effusion, if there is a clot in the effusion, the needle hole is easily blocked by the clot, resulting in failure to draw out the effusion smoothly, which increases the patient's discomfort.

[0006] In summary, the existing disposable sterile puncture kits are cumbersome to operate, take a long time to aspirate, are prone to complications such as pneumothorax, and have a high risk of infection. Utility Model Content

[0007] The utility model provides a disposable human serous cavity effusion puncture kit, which can solve the problems of the existing disposable sterile puncture kits, such as cumbersome operation, long suction time, easy to cause complications such as pneumothorax, and avoid infection caused by spillage.

[0008] This application provides the following technical solutions:

[0009] A disposable human serous cavity effusion puncture kit comprises a catheter, a puncture needle, a syringe and a fluid collection bag. The catheter comprises at least three branches, namely a first branch connected to the puncture needle, a second branch connected to the syringe, and a third branch connected to the fluid collection bag. The first branch, the second branch and the third branch are respectively connected to three interfaces of a connecting valve. The connecting valve is used for connecting the second branch to the first branch or the third branch and preventing the first branch from being connected to the third branch. A check valve is provided on the first branch.

[0010] Beneficial effects:

[0011] 1. Compared with the prior art, the syringe of the present technical solution is connected to the puncture needle and the liquid collection bag through a connecting valve. When a large amount of accumulated fluid needs to be extracted, there is no need to repeatedly disassemble and install the syringe. The syringe and the puncture needle can be quickly connected, or the syringe and the liquid collection bag can be connected by rotating the connecting valve. The operation is simple, the accuracy is high, the flexibility is strong, and the convenience of suction is greatly improved.

[0012] 2. The connecting valve can prevent the puncture needle from connecting with the fluid collection bag, and prevent the accumulated fluid in the fluid collection bag from flowing back to the puncture needle, ensuring the accuracy and safety of the operation, and avoiding the occurrence of complications such as cross infection and pneumothorax.

[0013] 3. The check valve installed on the first branch can effectively prevent the backflow of effusion caused by misoperation, such as injecting the effusion in the syringe back into the serous cavity such as the chest cavity, causing mediastinal swing and cardiac arrest. Ensure the accuracy and safety of the operation and avoid complications such as cross infection and pneumothorax.

[0014] 4. The extracted effusion will be collected in the fluid collection bag to prevent the effusion from being exposed to the air during the suction process, effectively preventing nosocomial infection and being highly safe.

[0015] Furthermore, the connecting valve includes a valve body with a T-shaped structure, and three interfaces are provided at the end of the valve body, namely a first interface connected to the first branch pipe, a second interface connected to the second branch pipe, and a third interface connected to the third branch pipe. A swivel core is provided in the middle of the valve body, and two circular holes that are interconnected and perpendicular to each other are provided on the swivel core. When one of the circular holes corresponds to the second interface, the other circular hole corresponds to the first interface or the third interface, and one end of the swivel core extends out of the valve body and is connected to the hand-held part.

[0016] Beneficial effects: The design of the connecting valve can ensure the accuracy and safety of operation. Different connecting modes can be selected by rotating the rotary core, while avoiding the connection between the first branch pipe and the third branch pipe, ensuring the accuracy of the liquid flow direction. The handheld part is convenient for holding and controlling the connecting valve.

[0017] Furthermore, the hand-held portion is provided with two handles, and the extension directions of the two handles correspond to the two circular holes respectively.

[0018] Beneficial effects: The handle is convenient for holding and controlling the connecting valve, and the position of the circular hole of the rotating core can be determined by the position of the handle, so that the connecting state of the catheter can be quickly confirmed and switched by the handle.

[0019] Furthermore, a limiting portion is provided on the valve body, and the limiting portion is used to limit the position of the hand-held portion.

[0020] Beneficial effect: The limiting part is used to limit the rotation direction of the handheld part, which is convenient for quickly locating the position of the circular hole of the rotating core.

[0021] Furthermore, a needle tip is provided at the end of the puncture needle, and a side hole is provided on the needle tube of the puncture needle.

[0022] Beneficial effects: The side hole of the puncture needle can effectively prevent the puncture needle from being blocked by clots, resulting in an unsmooth extraction process or even failure to extract. It also facilitates the uniform diffusion of the drug around when injecting the drug.

[0023] Furthermore, the check valve is a one-way flap or a duckbill valve.

[0024] Beneficial effects: Both the one-way valve and the duckbill valve have simple structures and low costs. They can effectively reduce pressure fluctuations during use, maintain the stable working state of the system, and improve the reliability and safety of the entire system. At the same time, the check valve can effectively avoid misoperation of the connecting valve, which may cause the accumulated fluid in the syringe to be injected back into the serous cavity such as the thoracic cavity, causing mediastinal swing and leading to cardiac arrest.

[0025] Furthermore, a branch pipe is arranged on the first branch pipe through a three-way joint, the three-way joint is located close to the puncture needle, an end cap is arranged on the branch pipe, and the branch pipe is used for drug injection.

[0026] Furthermore, a clamp is provided on the first branch pipe, the clamp is located between the three-way joint and the check valve, and the clamp is used to clamp the first branch pipe.

[0027] Beneficial effects: According to the patient's condition, after extracting the effusion in the cavity, it is necessary to inject drugs into the cavity. Compared with the prior art, the drug is injected into the cavity through the drug injection needle after the puncture is removed; this technical solution closes the clamp, unscrews the end cap, and allows the drug to be injected into the patient's corresponding cavity through the branch tube along the first branch tube and the puncture needle. It is convenient, fast, simple, safe, and can reduce pollution and waste. The clamp is easy to operate, which improves the convenience and efficiency of operation.

[0028] Furthermore, the syringe includes an empty barrel, a nipple at the front end of the empty barrel is connected to the second branch tube, a piston is arranged in the empty barrel, and a flange extending inward is arranged at the barrel mouth at the rear end of the empty barrel, and the flange is used to prevent the piston from detaching from the empty barrel.

[0029] Beneficial effects: The flange limits the piston from being separated from the empty barrel, ensuring that the piston always maintains close contact with the empty barrel during the use of the syringe, avoiding leakage of accumulated liquid, preventing the piston from falling and being contaminated, and ensuring a smooth aspiration process.

[0030] Furthermore, one end of the liquid collecting bag is connected to the third branch pipe, and the other end of the liquid collecting bag is provided with a specimen retaining device, which includes a liquid outlet tube, one end of which is connected to the liquid collecting bag, and the other end of which is provided with a needle, the needle is wrapped with a rubber layer on the outside, and a protective tube is provided on the outside of the rubber layer, one end of the protective tube is fixed on the liquid outlet tube, and the other end of the protective tube is provided with an end cover.

[0031] Beneficial effects: The specimen collection device facilitates sampling from the liquid collection bag, making the sampling process simpler and more efficient, while not causing pollution to the surrounding environment, and improving the sampling process to be more in line with biosafety requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view of the first embodiment of the disposable human serous cavity effusion puncture kit of the utility model;

[0033] Figure 2 It is a front view of the connecting valve of the first embodiment of the disposable human serous cavity effusion puncture kit of the utility model;

[0034] Figure 3 It is a cross-sectional view of the syringe of the second embodiment of the disposable human serous cavity effusion puncture kit of the utility model;

[0035] Figure 4 It is a front view of the puncture needle of the third embodiment of the disposable human serous cavity effusion puncture kit of the utility model;

[0036] Figure 5 It is a bottom view of the connecting valve of the fourth embodiment of the disposable human serous cavity effusion puncture kit of the utility model. DETAILED DESCRIPTION

[0037] The following is further described in detail through specific implementation methods:

[0038] The marks in the drawings of the specification include: catheter 1, first branch tube 101, second branch tube 102, third branch tube 103, puncture needle 2, side hole 201, syringe 3, liquid collection bag 4, connecting valve 5, valve body 501, first interface 502, second interface 503, third interface 504, rotary core 505, hand-held part 506, handle 507, limiting protrusion 508, spherical protrusion 509, check valve 6, three-way joint 7, branch tube 71, end cap 72, clamp 8, specimen retention device 9, liquid outlet tube 901, rubber layer 902, protective tube 903, end cover 904, sampling tube 10.

[0039] Embodiment 1

[0040] like Figure 1 to Figure 2 As shown, a disposable human serous cavity effusion puncture kit includes a catheter 1, a puncture needle 2, a syringe 3 and a liquid collection bag 4. The catheter 1 includes at least three branches, namely a first branch 101 connected to the puncture needle 2 at one end, a second branch 102 connected to the syringe 3 at one end, and a third branch 103 connected to the liquid collection bag 4 at one end. The other ends of the first branch 101, the second branch 102 and the third branch 103 are respectively connected to three interfaces of the connecting valve 5. The connecting valve 5 is used for the second branch 102 to connect the first branch 101 or the third branch 103 and to prevent the first branch 101 from connecting with the third branch 103. A check valve 6 is provided on the first branch 101. The check valve 6 adopts a one-way flap or a duckbill valve to ensure that the liquid in the first branch 101 flows from the puncture needle 2 to the connecting valve 5, and prevent the liquid from flowing back from the connecting valve 5 to the puncture needle 2. The check valve 6 of this embodiment includes a sealing cavity provided on the first branch pipe 101, the sealing cavity is in communication with the first branch pipe 101, and a duckbill valve is provided at the port in the sealing cavity connected to the puncture needle 2. A branch pipe 71 is provided on the first branch pipe 101 through a three-way joint 7, the three-way joint 7 is located near the puncture needle 2, an end cap 72 is provided on the branch pipe 71, the end cap 72 is connected to the branch pipe 71 through a threaded fit, and the branch pipe 71 is used for drug injection. A clamp 8 is provided on the first branch pipe 101, the clamp 8 is located between the three-way joint 7 and the check valve 6, and the clamp 8 is used to clamp the first branch pipe 101. The clamp 8 is made of elastic material, and is provided with an opening, one side of the opening is a fixed end, and the other side is a free end. Clamping blocks are provided on the fixed end and the free end of the clamp 8. The fixed end of the clamp 8 is sleeved on the first branch pipe 101, and the first branch pipe 101 is located between the two clamping blocks. The free end is pressed to make the free end and the fixed end clamped and fixed, so that the two clamping blocks are close to clamp the first branch pipe 101 to achieve the interception of the first branch pipe 101.

[0041] The connecting valve 5 comprises a valve body 501 of a T-shaped structure, and three interfaces are arranged at the end of the valve body 501, namely, a first interface 502 connected to the first branch pipe 101, a second interface 503 connected to the second branch pipe 102, and a third interface 504 connected to the third branch pipe 103. The first interface 502 and the third interface 504 are symmetrically arranged at both ends of the valve body 501, and the second interface 503 is located between the first interface 502 and the third interface 504, and the opening direction of the second interface 503 is perpendicular to the opening directions of the first interface 502 and the third interface 504. A swirl core 505 is arranged in the middle of the valve body 501, and two circular holes are arranged on the swirl core 505, whose bottoms are connected to each other and whose central axes are perpendicular to each other. When one of the circular holes corresponds to the second interface 503, the other circular hole corresponds to the first interface 502 or the third interface 504. One end of the rotary core 505 extends out of the valve body 501 and is connected to the hand-held part 506. The hand-held part 506 is provided with two mutually perpendicular handles 507, and the extension directions of the two handles 507 correspond to the two circular holes respectively. The valve body 501 is provided with a limiting part, which is used to limit the hand-held part 506. The limiting part of this embodiment is a limiting protrusion 508 respectively arranged on the outer wall of the two ends of the valve body 501. The two limiting protrusions 508 are respectively located near the first interface 502 and the third interface 504, and are used to limit the handle 507 of the hand-held part 506. When the handle 507 is rotated to the first interface 502 and is limited by the limiting protrusion 508 at the first interface 502, the two circular holes of the rotating core 505 correspond to the first interface 502 and the second interface 503 respectively, so that the first branch tube 101 and the second branch tube 102 are connected, and then the puncture needle 2 and the syringe 3 are connected; when the handle 507 is rotated to the third interface 504 and is limited by the limiting protrusion 508 at the third interface 504, the two circular holes of the rotating core 505 correspond to the second interface 503 and the third interface 504 respectively, so that the second branch tube 102 and the third branch tube 103 are connected, and then the syringe 3 and the liquid collecting bag 4 are connected; at the same time, the first branch tube 101 and the third branch tube 103 are prevented from being connected, and then the puncture needle 2 and the liquid collecting bag 4 are prevented from being connected, the air in the liquid collecting bag 4 is prevented from entering the first branch tube 101, and the liquid in the liquid collecting bag 4 is prevented from flowing back into the first branch tube 101.

[0042] One end of the liquid collecting bag 4 is connected to the third branch pipe 103, and the other end of the liquid collecting bag 4 is provided with a specimen retaining device 9, which includes a liquid outlet tube 901, one end of the liquid outlet tube 901 is connected to the liquid collecting bag 4, and the other end of the liquid outlet tube 901 is provided with a needle, the outer part of the needle is wrapped with a rubber layer 902, and the outer part of the rubber layer 902 is provided with a protective tube 903, one end of the protective tube 903 is fixed on the liquid outlet tube 901, and the other end of the protective tube 903 is provided with an end cap 904. The end cap 904 is connected to the protective tube 903 through a deformable connecting ear, and the end cap 904 is fixed to the protective tube 903 by snap-fitting. The liquid collecting bag 4, the protective tube 903, and the end cap 904 are all made of medical PVC material. The volume of the liquid collecting bag 4 used in this embodiment is 1000ml, and the liquid collecting bag 4 is provided with a scale.

[0043] The operation method of the disposable human serous cavity effusion puncture kit is as follows:

[0044] 1. Extraction of effusion: Turn the handle 507 of the connecting valve 5 to connect the first branch pipe 101 with the second branch pipe 102, and the third branch pipe 103 is in a closed state, and the clamp 8 is clamped to cut off the first branch pipe 101. Puncture the puncture needle 2 into the corresponding part, open the clamp 8, pull the piston of the syringe 3, and let the effusion enter the syringe 3 along the first branch pipe 101 and the second branch pipe 102 to extract the effusion.

[0045] 2. Collect the accumulated fluid: After the syringe 3 is filled, turn the handle 507 of the connecting valve 5 to connect the second branch tube 102 with the third branch tube 103, and the first branch tube 101 is in a closed state. Push the piston of the syringe 3 to allow the accumulated fluid to flow from the syringe 3 into the liquid collection bag 4 along the second branch tube 102 and the third branch tube 103. After the accumulated fluid in the syringe 3 is emptied, turn the handle 507 of the connecting valve 5 to connect the first branch tube 101 and the second branch tube 102, and pull the piston of the syringe 3 to extract the accumulated fluid. After the syringe 3 is filled, repeat the above steps until the extraction of the accumulated fluid is completed.

[0046] 3. Drug injection: After the effusion is extracted by the syringe 3, the clamp 8 is clamped to cut off the first branch tube 101, and the end cap 72 is opened. The drug is injected into the corresponding part of the patient through the branch tube 71 along the first branch tube 101 and the puncture needle 2 to complete the drug injection.

[0047] 4. Sampling: Open the end cover 904 of the specimen retention device 9, insert the sampling tube 10 into the protective tube 903, and allow the needle to penetrate into the sampling tube 10. The negative pressure of the sampling tube 10 causes the accumulated liquid in the liquid collection bag 4 to flow into the sampling tube 10 along the liquid outlet tube 901, thereby achieving the sampling of the accumulated liquid.

[0048] Embodiment 2

[0049] like Figure 3As shown, the difference between this embodiment and the first embodiment is that the syringe 3 adopts an anti-dropout syringe, and the syringe 3 includes an empty cylinder 301. The nipple at the front end of the empty cylinder is connected to the second branch pipe 102. A piston 302 is provided in the empty cylinder. The piston shaft of the piston 302 extends out of the empty cylinder 301. A piston handle is provided at the rear end of the piston shaft. A flange 303 extending inward is provided at the barrel mouth at the rear end of the empty cylinder 301. The flange 303 is used to prevent the piston 302 from detaching from the empty cylinder 301.

[0050] Embodiment 3

[0051] like Figure 4 As shown, the difference between this embodiment and the first embodiment is that a needle hole and a needle tip are provided at the end of the puncture needle 2, and at least two rows of side holes 201 are provided on the needle tube of the puncture needle 2 near the needle tip, each row includes at least two side holes 201, and the two rows of side holes 201 are cross-arranged on the needle tube, thereby preventing the puncture needle 2 from being blocked by clots and unable to extract the effusion.

[0052] Embodiment 4

[0053] like Figure 5 As shown, the difference between this embodiment and the first embodiment is that the valve body 501 of the connecting valve 5 is provided with a limiting portion which is three hemispherical grooves arranged on the valve body 501, and the three hemispherical grooves are respectively located near the first interface 502, the second interface 503, and the third interface 504, and the hemispherical grooves correspond to the hemispherical protrusions 509 provided on the two handles 507, and the handles 507 are made of elastic material and have a certain elastic deformation ability. Turn the handle 507, when the hemispherical protrusions 509 of the two handles 507 slide into the hemispherical grooves at the first interface 502 and the second interface 503 respectively, the two circular holes of the rotary core 505 correspond to the first interface 502 and the second interface 503 respectively, so that the first branch tube 101 and the second branch tube 102 are connected, and then the puncture needle 2 and the syringe 3 are connected; when the hemispherical protrusions 509 of the two handles 507 slide into the hemispherical grooves at the second interface 503 and the third interface 504 respectively, the two circular holes of the rotary core 505 correspond to the second interface 503 and the third interface 504 respectively, so that the second branch tube 102 and the third branch tube 103 are connected, and then the syringe 3 and the liquid collection bag 4 are connected; at the same time, the first branch tube 101 and the third branch tube 103 are prevented from being connected, and then the puncture needle 2 and the liquid collection bag 4 are prevented from being connected, and the air in the liquid collection bag 4 is prevented from entering the first branch tube 101, and the liquid in the liquid collection bag 4 is prevented from entering and flowing back to the first branch tube 101.

[0054] The above is only an embodiment of the utility model. The utility model is not limited to the field involved in this implementation case. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A disposable human serous cavity effusion puncture kit, comprising a catheter, a puncture needle, a syringe and a fluid collection bag, characterized in that: The catheter includes at least three branches, which are a first branch connected to the puncture needle, a second branch connected to the syringe, and a third branch connected to the liquid collection bag. The first branch, the second branch and the third branch are respectively connected to three interfaces of the connecting valve. The connecting valve is used for the second branch to connect with the first branch or the third branch and to avoid the first branch and the third branch from being connected. A check valve is provided on the first branch; the check valve adopts a one-way flap or a duckbill valve.

2. The disposable human serous cavity effusion puncture kit according to claim 1, characterized in that: The connecting valve includes a valve body with a T-shaped structure, and three interfaces are provided at the end of the valve body, namely a first interface connected to the first branch pipe, a second interface connected to the second branch pipe, and a third interface connected to the third branch pipe. A swivel core is provided in the middle of the valve body, and two circular holes that are interconnected and perpendicular to each other are provided on the swivel core. When one of the circular holes corresponds to the second interface, the other circular hole corresponds to the first interface or the third interface, and one end of the swivel core extends out of the valve body and is connected to the hand-held part.

3. The disposable human serous cavity effusion puncture kit according to claim 2, characterized in that: The hand-held portion is provided with two handles, and the extending directions of the two handles correspond to the two circular holes respectively.

4. The disposable human serous cavity effusion puncture kit according to claim 2, characterized in that: The valve body is provided with a limiting portion, and the limiting portion is used to limit the position of the hand-held portion.

5. The disposable human serous cavity effusion puncture kit according to claim 1, characterized in that: The end of the puncture needle is provided with a needle tip, and the needle tube of the puncture needle is provided with a side hole.

6. The disposable human serous cavity effusion puncture kit according to claim 1, characterized in that: A branch pipe is arranged on the first branch pipe through a three-way joint, the three-way joint is located between the puncture needle and the check valve, an end cap is arranged on the branch pipe, and the branch pipe is used for drug injection.

7. The disposable human serous cavity effusion puncture kit according to claim 6, characterized in that: The first branch pipe is provided with a clamp, the clamp is located between the three-way joint and the check valve, and the clamp is used to clamp the first branch pipe.

8. The disposable human serous cavity effusion puncture kit according to claim 1, characterized in that: The syringe comprises an empty barrel, a joint at the front end of the empty barrel is connected to the second branch pipe, a piston is arranged in the empty barrel, and a flange extending inward is arranged at the barrel mouth at the rear end of the empty barrel, and the flange is used to prevent the piston from escaping from the empty barrel.

9. The disposable human serous cavity effusion puncture kit according to claim 1, characterized in that: One end of the liquid collecting bag is connected to the third branch pipe, and the other end of the liquid collecting bag is provided with a specimen retaining device, which includes a liquid outlet tube, one end of which is connected to the liquid collecting bag, and the other end of which is provided with a needle, the needle is wrapped with a rubber layer, and the rubber layer is provided with a protective tube on the outside, one end of the protective tube is fixed on the liquid outlet tube, and the other end of the protective tube is provided with an end cover.

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