A needle set

Abstract

This utility model discloses an indwelling needle isolation plug, belonging to the field of medical product technology. It includes a bushing with a front and rear film respectively snapped onto both ends. Medical-grade silicone gel is disposed inside the bushing, with one end of the silicone gel corresponding to the rear film. Two through holes are formed at the end of the bushing near the front film, corresponding to the end of the silicone gel furthest from the rear film. In this utility model, when the steel needle and the sealing tube are inserted and removed through the rear film, the silicone gel, and the front film, the front and rear films ensure the strength of the isolation plug, keeping the silicone gel stable. The silicone gel has a faster elastic recovery speed, tightly wrapping the steel needle and the sealing tube, preventing gaps from forming during insertion and removal, providing strong sealing performance, maintaining a stable sealing effect, effectively preventing blood or drug leakage and preventing bacteria from entering the catheter seat.

Description

Technical Field

[0001] This utility model relates to the field of medical product technology, and more specifically, to an indwelling needle isolation plug. Background Technology

[0002] An indwelling needle, also known as a peripheral intravenous catheter, intravenous catheter, or cannula, is an infusion tool. It mainly consists of a stainless steel puncture guide needle (steel needle), a flexible catheter that can be left in the blood vessel, a plastic needle hub, and an isolation plug. The isolation plug is an important component of the indwelling needle, mainly used to prevent blood or drugs from leaking out of the indwelling needle, and also to prevent bacteria from entering the indwelling needle, thereby reducing the risk of infection.

[0003] Authorized publication number "CN109498897B" discloses an anti-clogging indwelling needle, comprising: a needle tube, a sealing tube, a push tube, and a catheter seat; the needle tube is installed at one end of the catheter seat and communicates with the catheter seat; the sealing tube is located in the catheter seat, and the outer diameter of the sealing tube corresponds to the diameter of the needle tube; one end of the sealing tube selectively extends into the needle tube; one end of the push tube extends into the catheter seat from the other end and connects to the other end of the sealing tube. The anti-clogging indwelling needle of this invention, by incorporating a sealing tube, can extend into the needle tube when not infusion is being administered, effectively sealing the needle tube and preventing blood from flowing into the indwelling needle tube and causing blockage.

[0004] In the aforementioned patent, the steel needle is removed after puncturing the catheter hub. The medication is delivered through the catheter hub and the needle tube (flexible catheter). To prevent blood from flowing into the needle tube and causing blockage when not infusion, the indwelling needle is sealed with a sealing tube. Throughout the entire application process, the steel needle and the sealing tube pass through the isolation plug (piston). The isolation plug ensures the sealing of the indwelling needle when the steel needle and the sealing tube are inserted and removed, preventing leakage of blood or medication and the entry of bacteria. However, existing isolation plugs are usually one-piece, with a certain thickness and hardness. During the insertion and removal of the steel needle and the sealing tube, not only is there great resistance and inconvenience, but the isolation plug also has a slow rebound speed and poor containment, resulting in unstable sealing effect. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of this utility model is to provide an indwelling needle isolation plug, which aims to solve the problem that the isolation plug in the prior art is usually one piece with a certain thickness and hardness. During the insertion and removal of the steel needle and the sealing tube, not only is there great resistance and inconvenience in insertion and removal, but also the isolation plug has a slow rebound speed and poor wrapping, resulting in unstable sealing effect.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution:

[0009] An indwelling needle isolation plug includes a bushing, with a front film and a rear film respectively snapped onto both ends of the bushing. Medical jelly silicone is disposed inside the bushing, with one end of the medical jelly silicone corresponding to the rear film. Two through holes are opened at the end of the bushing near the front film, and the two through holes correspond to the end of the medical jelly silicone away from the rear film.

[0010] In a preferred embodiment of this utility model, the front film is configured in the shape of a duckbill, and the front film corresponds to the two through holes.

[0011] As a preferred embodiment of this utility model, the hardness of both the bushing and the front film is greater than that of medical jelly silicone.

[0012] As a preferred embodiment of this utility model, a guide groove is provided at the end of the rear film away from the medical jelly silicone.

[0013] As a preferred embodiment of this utility model, the outer surface of the bushing is provided with a groove, and the groove is annular.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] (1) In this solution, the medical jelly silicone is placed inside the bushing between the front and rear films. The front and rear films are made of traditional elastomer materials such as rubber or silicone, which can maintain a certain strength. The medical jelly silicone, located between the front and rear films, has high softness and better wrapping. When the steel needle and the sealing tube are inserted and removed through the rear film, the medical jelly silicone and the front film, the front and rear films ensure the strength of the isolation plug, keep the medical jelly silicone stable, and the elastic recovery speed of the medical jelly silicone is faster. It can tightly wrap the steel needle and the sealing tube, prevent gaps from being generated during the insertion and removal of the steel needle and the sealing tube, and has strong sealing performance. It always maintains a stable sealing effect, effectively avoiding blood or drug leakage and preventing bacteria from entering the catheter seat.

[0017] (2) In this solution, the front film, the rear film and the medical jelly silicone are arranged on the bushing to form an isolation plug. The medical jelly silicone replaces part of the material of the traditional isolation plug. Under the same thickness, the traditional isolation plug and the isolation plug of this application have less resistance when inserting and removing the steel needle and the sealing tube because the medical jelly silicone is softer and easier to insert and remove. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present invention;

[0019] Figure 2 This is a front view of the present invention;

[0020] Figure 3 This is a front view of the bushing in this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Bushing; 2. Front film; 3. Rear film; 4. Medical-grade silicone gel; 5. Through hole; 6. Guide groove; 7. Slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example:

[0027] Please see Figure 1-3An indwelling needle isolation plug includes a bushing 1, with a front film 2 and a rear film 3 respectively snapped onto both ends of the bushing 1. A medical jelly silicone 4 is disposed inside the bushing 1, with one end of the medical jelly silicone 4 corresponding to the rear film 3. Two through holes 5 are opened at the end of the bushing 1 near the front film 2, and the two through holes 5 correspond to the end of the medical jelly silicone 4 away from the rear film 3.

[0028] In this embodiment, medical-grade silicone gel 4 is placed inside the bushing 1, corresponding to the two through holes 5. The front film 2 and the rear film 3 are respectively snapped onto both ends of the bushing 1. The rear film 3 holds the medical-grade silicone gel 4 in place, fixing it within the bushing 1, thus forming a complete isolation plug. The isolation plug is installed entirely within the catheter hub. The steel needle and the sealing tube pass through the rear film 3 and the medical-grade silicone gel 4 sequentially from back to front, entering the two through holes 5 respectively. The two through holes 5 separate the steel needle and the sealing tube. Finally, the steel needle and the sealing tube pass through the front film 2. When the patient... When an indwelling needle is needed for infusion, the steel needle is inserted into the catheter for puncture. After the indwelling needle is punctured, the needle tip is pulled out from the catheter in sequence through the front film 2, a through hole 5, medical gel silicone 4, and the rear film 3. The front film 2, medical gel silicone 4, and rear film 3 use their own elasticity to seal the catheter seat, preventing drug leakage and bacterial entry. When the patient is not receiving infusion, the sealing tube is pushed into the catheter for plugging. During the insertion and removal of the steel needle and the sealing tube, the front film 2, medical gel silicone 4, and rear film 3 ensure the seal.

[0029] Specifically, the front film 2 is designed in the shape of a duckbill, and the front film 2 corresponds to the two through holes 5.

[0030] In this embodiment, the front film 2 is designed in the shape of a duckbill, which not only facilitates the wrapping of the steel needle and the sealing tube to ensure sealing, but also has a guiding function to facilitate the insertion and removal of the steel needle and the sealing tube.

[0031] Specifically, the hardness of bushing 1 and front film 2 is greater than that of medical jelly silicone 4.

[0032] In this embodiment, the rear film 3 and the front film 2 are made of traditional medical rubber or silicone and other elastomer materials, which are common knowledge to those skilled in the art. Medical jelly silicone 4 is softer than traditional medical rubber, and can quickly recover its elasticity when the steel needle and the sealing tube are inserted or removed, resulting in a better sealing effect.

[0033] Specifically, a guide groove 6 is provided at the end of the rear film 3 that is away from the medical jelly silicone 4.

[0034] In this embodiment, the guide groove 6 has a guiding effect, which facilitates the insertion of the steel needle and the sealing tube into the through-hole isolation plug.

[0035] Specifically, the outer surface of the bushing 1 is provided with a groove 7, and the groove 7 is annular.

[0036] In this embodiment, the bushing 1 is snapped into the conduit seat by the slot 7, thereby fixing the entire isolation plug.

[0037] Working principle: The steel needle and the occlusion tube pass through the rear film 3 and medical jelly silicone 4 sequentially from back to front, entering the two through holes 5 respectively. The two through holes 5 separate the steel needle and the occlusion tube. Finally, the steel needle and the occlusion tube pass through the front film 2. The rear film 3, medical jelly silicone 4, and front film 2 enclose the steel needle and the occlusion tube, ensuring the sealing of the catheter seat. When the patient needs to use an indwelling needle for infusion, the steel needle is inserted into the needle tube for puncture. After the indwelling needle puncture is completed, the needle tip of the steel needle is pulled out from the needle tube sequentially through the front film 2, one through hole 5, medical jelly silicone 4, and rear film 3. The front film 2, medical jelly silicone 4, and rear film 3 use their own elasticity to seal within the catheter seat, preventing drug leakage and bacterial entry. When the patient is not receiving infusion, the occlusion tube is pushed into the needle tube for plugging. The front film 2, medical jelly silicone 4, and rear film 3 ensure the sealing of the occlusion tube during insertion.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. An indwelling needle isolator plug comprising a hub (1) characterised in that: The bushing (1) has a front film (2) and a rear film (3) respectively attached to its two ends. The bushing (1) contains a medical gel silicone (4), and one end of the medical gel silicone (4) corresponds to the rear film (3). The bushing (1) has two through holes (5) at the end near the front film (2), and the two through holes (5) correspond to the end of the medical gel silicone (4) away from the rear film (3).

2. A cannula isolator according to claim 1, wherein: The front film (2) is configured in the shape of a duckbill, and the front film (2) corresponds to the two through holes (5).

3. A cannula isolator according to claim 2, wherein: The hardness of the bushing (1) and the front film (2) is greater than that of the medical jelly silicone (4).

4. A cannula isolator according to claim 3, wherein: The rear film (3) has a guide groove (6) at the end away from the medical jelly silicone (4).

5. A cannula isolator according to claim 4, wherein: The outer surface of the bushing (1) is provided with a groove (7), and the groove (7) is annular.

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