Quick first-aid self-help disposable drainage catheter and accessories

Abstract

The application discloses a quick first-aid self-help disposable drainage catheter, which is characterized in that a hollow puncture needle is sleeved in the catheter body, an inner supporting tube is sleeved between the hollow puncture needle and the catheter body, the front end of the inner supporting tube is supported on a step in the catheter body, the flexible catheter body is supported and stretched into a straight pipe state, the catheter body is provided with puncture support inside, an arc-shaped reinforcing plate is sleeved outside the catheter body to provide reinforcing support for the catheter body, and the puncture strength of the catheter body is ensured, so that the drainage catheter can be directly punctured into the injured organ of a soldier, and after the hollow puncture needle and the inner supporting tube are pulled out, the effusion in the organ can be quickly drained, the operation process is simple, the wounded comrade or medical soldier can quickly drain on the spot, the effusion is timely discharged, and precious time is saved for further treatment of the wounded.

Description

Disposable drainage tubes and accessories for rapid first aid and self-rescue Technical Field

[0001] This invention relates to the field of medical catheters, and more particularly to a disposable drainage catheter and accessories for rapid emergency self-rescue. Background Technology

[0002] Battlefield first aid refers to the self-rescue and mutual aid activities of wounded personnel during wartime. Past war experience has shown that approximately 50% of wounded soldiers in wartime are rescued through self-help and mutual aid. Rapid and accurate battlefield first aid is of paramount importance.

[0003] On the battlefield, soldiers are frequently injured by artillery shells, bullets, or severe impacts. These types of injuries can cause a large amount of fluid to accumulate in certain organs of the soldier's body. The pressure from this fluid can lead to serious complications such as dizziness and difficulty breathing. However, this type of injury cannot be drained through mutual aid. Usually, medics carry the soldier away from the battlefield and transport him to a field hospital for treatment. Therefore, it is impossible to provide timely on-site care for the soldier. If the injury is severe, it can endanger the soldier's life. Therefore, it is necessary to design an easy-to-operate device that can provide emergency drainage to solve the above problems. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a disposable drainage catheter and accessories for rapid emergency self-rescue.

[0005] The technical solution of the present invention is: a disposable drainage catheter for rapid emergency self-rescue, comprising a catheter body, an inner support tube, a hollow puncture needle, and an arc-shaped reinforcing plate; the front end of the catheter body is provided with a plurality of drainage holes along the generatrix direction, and the inside of the catheter body is provided with interconnected channels A and B, the diameter of channel B being smaller than the diameter of channel A, thus forming a step at the connection between channel A and channel B; the inner support tube is fitted inside the catheter body, its front end face being supported on the step, and the hollow puncture needle is fitted inside the inner support tube, its front end passing through channel B and extending out from the front end of the catheter body;

[0006] The arc-shaped reinforcing plate is a semi-circular plate that is fitted onto the outside of the catheter body, with both ends extending to the two ends of the catheter body.

[0007] Preferably, the rear end of the catheter body is Y-shaped and connected to a drug delivery branch tube. The inner sidewall of the catheter body is provided with a drug delivery channel along the length direction. One end of the drug delivery channel is provided with a drug outlet hole that penetrates the catheter body. The position of the drug outlet hole corresponds to the position of the arc-shaped reinforcing plate. The other end is connected to the drug delivery branch tube.

[0008] Preferably, the hollow puncture needle and the channel B are interference fit.

[0009] Preferably, the front end of the catheter body is provided with a conical head, and the front end of the arc-shaped reinforcing plate is provided with a conical segment that matches the conical head.

[0010] An accessory for a rapid first aid self-rescue disposable drainage catheter includes connector A, connector B, connector C, and a sealing cap; connector A is connected to the rear end of the catheter body, connector B is connected to connector A, connector C is connected to connector B, the sealing cap is connected to the outer end of connector C, the rear end of the inner support tube extends from connector A, the extended part is fixedly connected to connector B, the rear end of the hollow puncture needle extends from connector B, the extended part is fixedly connected to connector C.

[0011] Preferably, the connector A and connector B are connected by threads, the connector B and connector C are connected by threads, and the connector C and the sealing cap are connected by threads.

[0012] Preferably, a reinforcing sleeve is provided between the catheter body and the connector A, and a branch pipe connector is provided in the middle of the reinforcing sleeve. A drug inlet is provided at the corresponding position of the catheter body and the branch pipe connector, and the drug delivery branch pipe is connected inside the branch pipe connector.

[0013] Preferably, a conical groove is provided at the connection between connector A and the conduit body, and adhesive is provided in the conical groove to fix connector A and the conduit body together. Similarly, a conical groove is provided at the connection between connector B and the inner support tube, and adhesive is provided in the conical groove to fix connector B and the inner support tube together.

[0014] The beneficial technical effects of this invention are:

[0015] (1) The catheter body of the present invention is fitted with a hollow puncture needle, and an inner support tube is fitted between the hollow puncture needle and the catheter body. The front end of the inner support tube is supported on the step inside the catheter body, which supports the flexible catheter body to extend into a straight tube state and provides puncture support for the catheter body inside. An arc-shaped reinforcing plate is fitted on the outside to provide reinforcing support for the catheter body outside, ensuring the puncture strength of the catheter body. Therefore, by holding the drainage catheter, it can be directly punctured into the injured organ of the soldier. After the hollow puncture needle and the inner support tube are pulled out, the fluid in the organ can be drained quickly. The operation process is simple, and the soldier's comrades or medics can perform rapid drainage on the spot and drain the fluid in time, which buys valuable time for the further treatment of the soldier.

[0016] (2) The hollow puncture needle of the present invention can flow with accumulated fluid. When the hollow puncture needle and the catheter body enter the organ in the body, the internal pressure can cause the accumulated fluid to flow out from the rear end of the hollow puncture needle. Therefore, the color of the flowing fluid can be used to determine whether the injured organ has been punctured (the color of the accumulated fluid produced after injury to different organs is different), which is conducive to accurate and rapid puncture and drainage.

[0017] (3) The various connectors of the present invention are connected in sequence by threads to fix the catheter body, hollow puncture needle and inner support tube into one unit, which is convenient to hold and puncture. After unscrewing each connector, the hollow puncture needle and inner support tube can be quickly pulled out of the catheter body, and the catheter can be placed and drained in a very short time. Attached Figure Description

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0020] Figure 3 is an enlarged view of point a in Figure 2;

[0021] Figure 4 is an enlarged view of section b in Figure 2;

[0022] Figure 5 is an enlarged view of point c in Figure 2;

[0023] Figure 6 is a sectional view along line AA of Figure 2;

[0024] Figure 7 is a three-dimensional structural diagram of the catheter body;

[0025] Figure 8 is a three-dimensional structural diagram of the arc-shaped support plate;

[0026] Figure 9 is a three-dimensional structural diagram of the internal support tube;

[0027] Figure 10 is a three-dimensional structural diagram of a hollow puncture needle;

[0028] Figure 11 is a product image of the present invention.

[0029] In the diagram, 11. Catheter body, 111. Drainage hole, 112. Channel A, 113. Channel B, 114. Step, 115. Drug delivery channel, 116. Drug outlet, 117. Conical head, 118. Drug inlet, 12. Internal support tube, 13. Hollow puncture needle, 14. Arc-shaped reinforcing plate, 141. Conical segment, 142. Handle.

[0030] 15. Dosing branch pipe, 151. Dosing connector, 21. Connector A, 22. Connector B, 23. Connector C, 24. Sealing cap, 25. Reinforcing sleeve, 31. Adhesive. Detailed Implementation

[0031] Example 1, see Figures 1-10 in the specification, a disposable drainage catheter for rapid first aid and self-rescue includes a catheter body, a rigid inner support tube, a hollow puncture needle, and an arc-shaped reinforcing plate;

[0032] The front end of the catheter body has several drainage holes along the generatrix direction. Drainage is carried out through the drainage holes and the front port of the catheter body. The inside of the catheter body has interconnected channels A and B. The diameter of channel B is smaller than that of channel A, so a step can be formed at the connection between channel A and channel B. The inner support tube is fitted inside the catheter body, and its front end is supported on the step. The inner support tube supports the flexible catheter body to extend into a straight tube state and provides strong puncture support for the catheter body inside. Combined with the hollow puncture needle inside, the drainage catheter can be directly punctured into the patient's organs by holding it. The hollow puncture needle is fitted inside the inner support tube, and its front end extends out from the front end of the catheter body through channel B.

[0033] The arc-shaped reinforcing plate is a semi-circular plate that is fitted on the outside of the catheter body and extends to both ends of the catheter body. The arc-shaped reinforcing plate provides reinforcement support on the outside and, together with the internal support of the inner support tube, can ensure the puncture strength of the catheter body, making it easier for medical personnel or wounded soldiers to hold the catheter and perform rapid puncture.

[0034] The rear end of the catheter body is Y-shaped and connected to a drug delivery branch. The inner wall of the catheter body has a drug delivery channel along its length. One end of the drug delivery channel has a drug outlet that penetrates the catheter body. The position of the drug outlet corresponds to the position of the arc-shaped reinforcing plate. During puncture, the arc-shaped reinforcing plate can block the drug outlet. The other end is connected to the drug delivery branch. Through this drug delivery tube, anesthetics and other drugs can be quickly added into the drug delivery channel and then discharged from the drug outlet into the patient's body for adjuvant treatment.

[0035] The hollow puncture needle and the channel B are fitted with an interference fit. This interference fit is used to fix the front end of the hollow puncture needle and the catheter body tightly, so as to realize the puncture of the hollow puncture needle and the catheter body as a whole. Since the catheter body is made of flexible plastic material, it can be installed and disassembled by forceful insertion and removal.

[0036] The front end of the catheter body is provided with a conical head that facilitates puncture, and the front end of the arc-shaped reinforcing plate is provided with a conical section that matches the conical head.

[0037] Example 2, referring to Figures 1-10 in the specification, is an accessory for a disposable drainage catheter for rapid emergency self-rescue. It includes the drainage catheter described in Example 1, and further includes connector A, connector B, connector C, and a sealing cap. Connectors A, B, and C are all hollow and open at both ends. Connector A is connected to the rear end of the catheter body, connector B is connected to connector A, connector C is connected to connector B, and the sealing cap is connected to the outer end of connector C. This sealing cap is used to seal the rear end of the hollow puncture needle during puncture. After puncture into the body, the sealing cap is opened to observe the fluid flowing out of the hollow puncture needle and determine whether the puncture was successful. The rear end of the inner support tube extends from connector A, and the extended part is fixedly connected to connector B. The rear end of the hollow puncture needle extends from connector B, and the extended part is fixedly connected to connector C.

[0038] Connector A and connector B are connected by threads, connector B and connector C are connected by threads, and connector C and sealing cap are connected by threads. The threaded connection facilitates the connection and disassembly of each connector. A reinforcing sleeve is provided between the catheter body and connector A. A branch pipe connector is provided in the middle of the reinforcing sleeve. A drug inlet is provided at the corresponding position of the catheter body and the branch pipe connector. The drug delivery branch pipe is connected inside the branch pipe connector. The reinforcing sleeve is used to enhance the firmness of the connection between the catheter body and connector A.

[0039] A tapered groove is provided at the connection between connector A and the main body of the conduit. Adhesive is provided in the tapered groove to fix connector A and the main body of the conduit. A tapered groove is provided at the connection between connector B and the inner support tube. Adhesive is provided in the tapered groove to fix connector B and the inner support tube.

[0040] The working process and principle of this embodiment are as follows:

[0041] (1) When performing drainage first aid on wounded soldiers on the battlefield, hold the catheter body and puncture the injured organs in the wounded soldier's body through the hollow puncture needle at the front end of the catheter body. During the puncture, the inner support tube and the arc-shaped reinforcing plate provide strong support for the catheter body in a straight tube shape, and the puncture effect will not be affected by insufficient catheter strength.

[0042] (2) When it is determined that the tip of the hollow puncture needle has reached the vicinity of the injured organ, open the sealing cap at the rear end of the hollow puncture needle. Under the action of internal pressure, the fluid can flow out from the rear end of the hollow puncture needle. The color of the fluid flowing out can be used to determine whether the catheter body has been accurately punctured to the injured organ.

[0043] (3) After the catheter is punctured into the injured organ, first twist connector C to separate it from connector B at the rear end of the inner support tube, and pull out the hollow puncture needle. Then twist connector B to separate it from connector A at the rear end of the catheter body, and pull out the inner support tube. Only the catheter body remains in the patient's body.

[0044] (4) Connect the connector A of the catheter body to the drainage tube connector of the drainage bag to drain the fluid accumulated in the internal organs of the injured person.

Claims

1. A disposable drainage catheter and accessories for rapid emergency self-rescue, characterized in that: The catheter includes a catheter body, an inner support tube, a hollow puncture needle, and an arc-shaped reinforcing plate. The front end of the catheter body has several drainage holes along the generatrix direction. The interior of the catheter body has interconnected channels A and B, with channel B having a smaller diameter than channel A, thus forming a step at the connection point of channels A and B. The inner support tube is fitted inside the catheter body, its front end supported on the step. The hollow puncture needle is fitted inside the inner support tube, its front end passing through channel B and extending from the front end of the catheter body. The arc-shaped reinforcing plate is a semi-circular plate fitted outside the catheter body, with both ends extending to the two ends of the catheter body. The catheter also includes connectors A, B, and C, and a sealing cap. Connector A is connected to the rear end of the catheter body; connector B is connected to connector A; connector C is connected to connector B; the sealing cap is connected to the outer end of connector C; the rear end of the inner support tube extends from connector A, with the extended portion fixedly connected to connector B; the rear end of the hollow puncture needle extends from connector B, with the extended portion fixedly connected to connector C.

2. The disposable drainage catheter and accessories for rapid first aid and self-rescue as described in claim 1, characterized in that: The connectors A and B are connected by threads, the connectors B and C are connected by threads, and the connector C and the sealing cap are connected by threads.

3. The disposable drainage catheter and accessories for rapid first aid and self-rescue as described in claim 1, characterized in that: A reinforcing sleeve is provided between the catheter body and the connector A. A branch pipe connector is provided in the middle of the reinforcing sleeve. A drug inlet is provided at the corresponding position of the catheter body and the branch pipe connector. The drug delivery branch pipe is connected inside the branch pipe connector.

4. The disposable drainage catheter and accessories for rapid first aid and self-rescue as described in claim 1, characterized in that: The connection between connector A and the main body of the conduit is provided with a conical groove, and glue is provided in the conical groove to fix connector A and the main body of the conduit. The connection between connector B and the inner support tube is provided with a conical groove, and glue is provided in the conical groove to fix connector B and the inner support tube.

5. A disposable drainage catheter and accessories for rapid first aid and self-rescue as described in claim 1, characterized in that: The rear end of the catheter body is Y-shaped and connected to a drug delivery branch. The inner sidewall of the catheter body is provided with a drug delivery channel along the length direction. One end of the drug delivery channel is provided with a drug outlet hole that penetrates the catheter body. The position of the drug outlet hole corresponds to the position of the arc-shaped reinforcing plate. The other end is connected to the drug delivery branch.

6. A disposable drainage catheter and accessories for rapid first aid and self-rescue as described in claim 1, characterized in that: The hollow puncture needle and channel B are interference-fitted.

7. A disposable drainage catheter and accessories for rapid first aid and self-rescue as described in claim 1, characterized in that: The front end of the catheter body is provided with a conical head, and the front end of the arc-shaped reinforcing plate is provided with a conical segment that matches the conical head.

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