A leak-proof sealed connector for a contrast injection syringe

Abstract

This utility model belongs to the field of medical device technology, specifically relating to a leak-proof sealing connector for an contrast agent injector. It includes an injector body and an injection head, with the injection head connected to the end of the injector body. A sealing connector is fixedly sleeved on the surface of the injection head, and a sealing locking mechanism is provided inside the sealing connector. The sealing locking mechanism includes: a tube clamp sleeved on the surface of the sealing connector; a compression spring sleeved on the surface of the sealing connector, one end of which is fixedly connected to the end of the tube clamp; a circular hole formed on the surface of the sealing connector; and a limiting ball slidably disposed inside the circular hole. This utility model provides a leak-proof sealing connector for an contrast agent injector, which can increase the sealing effect of the connection between the infusion tubing and the injector, and lock the infusion tubing connector, improving connection stability, reducing the risk of contrast agent leakage, and ensuring the stability and safety of the injection process.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a leak-proof sealing connector for an angiography syringe. Background Technology

[0002] A contrast injector is a device specifically designed for medical imaging examinations. It is primarily used to inject contrast agents to improve image contrast in X-ray, CT, MRI, and other imaging examinations, helping doctors to observe internal structures more clearly. The connector of the contrast injector is a crucial component, responsible for connecting the injector to the infusion tubing, contrast agent vial, or the patient's injection site.

[0003] Existing connectors are usually directly attached to the end of the syringe. During injection, when the pressure increases or the operation is not correct, the infusion tubing connector may loosen or fall off the syringe. This can prevent the contrast agent from being injected smoothly or even cause leakage, thereby affecting the diagnosis and treatment effect and patient safety. Utility Model Content

[0004] The purpose of this invention is to provide a leak-proof sealing connector for contrast injection syringes, which can increase the sealing effect of the connection between the infusion tubing and the syringe, lock the connector of the infusion tubing, improve connection stability, reduce the risk of contrast agent leakage, and ensure the stability and safety of the injection process.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A leak-proof sealing connector for an angiography syringe includes a syringe body and an injection head. The injection head is connected to the end of the syringe body. A sealing connector is fixedly sleeved on the surface of the injection head, and a sealing locking mechanism is provided inside the sealing connector. The sealing locking mechanism includes: a tube clamp sleeved on the surface of the sealing connector; a compression spring sleeved on the surface of the sealing connector, one end of which is fixedly connected to the end of the tube clamp; a circular hole formed on the surface of the sealing connector; and a limiting ball. A limiting ball is slidably disposed inside the circular hole; a clamping sleeve is movably sleeved on the surface of the sealing joint and the tube clamp, the end of the compression spring is connected to the clamping sleeve, and the inner wall of the clamping sleeve is in contact with the limiting ball; a tube head is inserted into the inner wall of the sealing joint, an annular groove is formed on the side surface of the tube head, the limiting ball is located inside the annular groove, and the end of the tube head is connected to an infusion tube; a sealing element is fixedly connected to the inner wall of the sealing joint and in contact with the end of the injection head, and the sealing element is sleeved on the surface of the tube head.

[0007] Preferably, the top and bottom of the pipe clamp surface are provided with sliding grooves, and the end of the clamping sleeve is fixedly connected to a slider, which is slidably connected to the inside of the sliding groove.

[0008] Preferably, the surface of the pipe head is fixedly connected with a protrusion, the end of the sealing joint is provided with a groove, the inner wall of the sealing joint is provided with a circular groove, the circular groove is connected to the groove, and the protrusion is used in conjunction with the groove and the circular groove respectively.

[0009] Preferably, the end of the inner wall of the clamping sleeve is provided with a movable groove, which is used in conjunction with the limiting ball.

[0010] Preferably, there are several limiting balls, which are distributed in a ring at equal intervals inside the annular groove.

[0011] Preferably, the surface of the tube head is in close contact with the inner side of the seal, and the seal is made of an elastic material.

[0012] The technical effects achieved by this utility model are as follows:

[0013] In this invention, when using the syringe body, the infusion tube can be connected to the syringe body via a sealing connector. During connection, first pull the clamping sleeve to one side of the syringe body. The clamping sleeve will compress the compression spring. Then, insert the tube head into the sealing connector, so that the tube head is inserted into the inner wall of the seal. Simultaneously, the tube head compresses the limiting ball, moving it outwards inside the circular hole. After the tube head is properly inserted into the sealing connector, release your hand from the clamping sleeve. Under the rebound force of the compression spring, push the clamping sleeve in the opposite direction. The clamping sleeve will then compress the limiting ball, moving it inwards inside the circular hole and stopping the limiting ball in the annular groove on the surface of the tube head. This effectively locks the tube head inside the sealing connector, preventing excessive pressure during contrast agent injection from causing the tube head to detach from the sealing connector. Simultaneously, the sealing element improves the sealing effect between the sealing connector and the tube head, reducing the risk of contrast agent leakage and ensuring the stability and safety of the injection process. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a three-dimensional side view sectional view of the sealing joint of this utility model;

[0016] Figure 3 This is a utility model Figure 2 Enlarged 3D schematic diagram at point A in the middle;

[0017] Figure 4 This is a three-dimensional schematic diagram of the disassembled connection of the pipe head and sealing joint of this utility model.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Syringe body; 101. Injection head; 2. Sealing connector; 201. Tube clamp; 202. Compression spring; 203. Round hole; 204. Limiting ball; 205. Clamping sleeve; 206. Tube head; 207. Annular groove; 208. Seal; 301. Slide groove; 302. Sliding block; 401. Protrusion; 402. Groove; 403. Circular groove; 5. Movable groove. Detailed Implementation

[0020] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0021] like Figures 1-4 As shown, a leak-proof sealing connector for an imaging syringe includes a syringe body 1 and an injection head 101. The injection head 101 is connected to the end of the syringe body 1. A sealing connector 2 is fixedly sleeved on the surface of the injection head 101. A sealing locking mechanism is provided inside the sealing connector 2. The sealing locking mechanism includes: a tube clamp 201, which is sleeved on the surface of the sealing connector 2; a compression spring 202, which is sleeved on the surface of the sealing connector 2, with one end of the compression spring 202 fixedly connected to the end of the tube clamp 201; a circular hole 203, which is formed on the surface of the sealing connector 2; a limiting ball 204, which is slidably disposed inside the circular hole 203; and a clamping sleeve 205, which is movably sleeved on the surfaces of the sealing connector 2 and the tube clamp 201. The end of the compression spring 202 is connected to the clamping sleeve 205 to clamp. The inner wall of sleeve 205 contacts the limiting ball 204; tube head 206 is inserted into the inner wall of sealing joint 2, and an annular groove 207 is opened on the side surface of tube head 206. The limiting ball 204 is located inside the annular groove 207, and the end of tube head 206 is connected to the infusion tube; sealing element 208 is fixedly connected to the inner wall of sealing joint 2 and contacts the end of injection head 101. Sealing element 208 is sleeved on the surface of tube head 206. Through the cooperation of the sealing locking mechanism, it can effectively prevent the contrast agent from leaking during the injection process. Usually, the sealing element 208 is a flexible sealing material that can maintain close contact under high pressure injection environment, ensuring that the injection is completely injected, and preventing the connection from loosening under the locking action, preventing tube head 206 from falling off the infusion tube, ensuring that the injection process is not interrupted, and avoiding unnecessary operational interference.

[0022] like Figures 1-4As shown, the top and bottom of the pipe clamp 201 are provided with sliding grooves 301. The end of the clamping sleeve 205 is fixedly connected to a slider 302. The slider 302 is slidably connected to the inside of the sliding groove 301. When the clamping sleeve 205 moves, the slider 302 on the rear side of the clamping sleeve 205 can slide inside the sliding groove 301. With the cooperation between the slider 302 and the sliding groove 301, the clamping sleeve 205 can move parallel to the direction of the sliding groove 301, preventing the clamping sleeve 205 from being displaced when it moves.

[0023] like Figure 4 As shown, a protrusion 401 is fixedly connected to the surface of the tube head 206, and a groove 402 is opened at the end of the sealing joint 2. A circular groove 403 is opened on the inner wall of the sealing joint 2, and the circular groove 403 communicates with the groove 402. The protrusion 401 is used in conjunction with the groove 402 and the circular groove 403 respectively. When the tube head 206 is connected to the sealing joint 2, the protrusion 401 on the surface of the tube head 206 is connected to the groove 402. After the tube head 206 and the sealing joint 2 are connected, the tube head 206 and the infusion tube are rotated. The tube head 206 can drive the protrusion 401 to rotate about 90 degrees inside the circular groove 403, which can limit the protrusion 401 inside the circular groove. At the same time, the tube head 206 can be locked more stably inside the sealing joint 2 by the limiting of the protrusion 401 and the circular groove 403, thereby improving the connection stability of the tube head 206 and the sealing joint 2.

[0024] like Figures 2-3 As shown, the end of the inner wall of the clamping sleeve 205 is provided with a movable groove 5. The movable groove 5 is used in conjunction with the limiting ball 204. When the tube head 206 is installed, the tube head 206 squeezes the limiting ball 204 outward. The limiting ball 204 moves outward inside the round hole 203 and moves into the movable groove 5, so that the limiting ball 204 has sufficient room to move. This avoids the limiting ball 204 being squeezed outward and blocked by the clamping sleeve 205 during the connection process between the tube head 206 and the sealing joint 2, thus preventing the connection from being smooth.

[0025] like Figures 3-4 As shown, there are several limiting balls 204, which are distributed in a ring at equal intervals inside the annular groove 207. The multiple limiting balls 204 can be evenly connected and distributed with the annular groove 207, thereby more stably limiting and locking the pipe head 206 inside the sealing joint 2, improving connection stability and preventing loosening.

[0026] like Figure 3 As shown, the surface of the tube head 206 is tightly fitted to the inner side of the seal 208. The seal 208 is made of elastic material. The elastic seal 208 can tightly fit the surface of the tube head 206, thereby forming an effective seal. It prevents the fluid in the injection liquid sealing joint 2 from leaking to the outside. The seal 208 can ensure the complete sealing of the sealing joint 2 and avoid liquid leakage.

[0027] The working principle of this utility model is as follows: When using the syringe body 1, the infusion tube can be connected to the syringe body 1 through the sealing connector 2. During connection, first pull the clamping sleeve 205 to one side of the syringe body 1. The clamping sleeve 205 will compress the compression spring 202. Then, insert the tube head 206 into the sealing connector 2, so that the tube head 206 is inserted into the inner wall of the seal 208. At the same time, the tube head 206 compresses the limiting ball 204, which moves outward inside the round hole 203. After the tube head 206 is properly inserted into the sealing connector 2, remove your hand from the clamping sleeve 205. Under the rebound force of the compression spring 202, the clamping sleeve 205 can be pushed to move in the opposite direction. The clamping sleeve 205 will squeeze the limiting ball 204 inside the round hole 203 and move it inward. The limiting ball 204 will be blocked and limited in the annular groove 207 on the surface of the tube head 206, thereby limiting and locking the tube head 206 inside the sealing joint 2. This prevents the tube head 206 from detaching from the sealing joint 2 due to excessive pressure during contrast agent injection. At the same time, the seal 208 can improve the sealing effect between the sealing joint 2 and the tube head 206, reduce the risk of contrast agent leakage, and ensure the stability and safety of the injection process.

[0028] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A leak-proof sealing connector for an angiography syringe, comprising a syringe body (1) and an injection head (101), wherein the injection head (101) is connected to the end of the syringe body (1), characterized in that: A sealing connector (2) is fixedly sleeved on the surface of the injection head (101), and a sealing locking mechanism is provided inside the sealing connector (2); The sealing and locking mechanism includes: a pipe clamp (201), which is sleeved on the surface of the sealing joint (2); Compression spring (202), the compression spring (202) is sleeved on the surface of the sealing joint (2), and one end of the compression spring (202) is fixedly connected to the end of the pipe clamp (201); A circular hole (203) is formed on the surface of the sealing joint (2); A limiting ball (204) is slidably disposed inside the circular hole (203); A clamping sleeve (205) is movably sleeved on the surface of the sealing joint (2) and the pipe clamp (201). The end of the compression spring (202) is connected to the clamping sleeve (205). The inner wall of the clamping sleeve (205) is in contact with the limiting ball (204). The tube head (206) is inserted into the inner wall of the sealing joint (2). An annular groove (207) is provided on the side surface of the tube head (206). The limiting ball (204) is located inside the annular groove (207). The end of the tube head (206) is connected to an infusion tube. A sealing element (208) is fixedly connected to the inner wall of the sealing joint (2) and in contact with the end of the injection head (101). The sealing element (208) is sleeved on the surface of the tube head (206).

2. A leak-proof sealed connector for a contrast media injector as defined in claim 1, wherein: The top and bottom of the tube clamp (201) are provided with sliding grooves (301), and the end of the clamping sleeve (205) is fixedly connected with a slider (302), which is slidably connected to the inside of the sliding groove (301).

3. The leak resistant, sealed connector for a contrast media injector as defined in Claim 1, wherein: The surface of the pipe head (206) is fixedly connected with a protrusion (401), the end of the sealing joint (2) is provided with a groove (402), the inner wall of the sealing joint (2) is provided with a circular groove (403), the circular groove (403) communicates with the groove (402), and the protrusion (401) is used in conjunction with the groove (402) and the circular groove (403) respectively.

4. The leak resistant, sealed connector for a contrast media injector as defined in Claim 1, wherein: The end of the inner wall of the clamping sleeve (205) is provided with a movable groove (5), which is used in conjunction with the limiting ball (204).

5. The leak resistant, sealed connector for a contrast media injector according to Claim 1, wherein: There are several limiting balls (204), which are distributed in a ring at equal intervals inside the annular groove (207).

6. The leak resistant, sealed connector for a contrast media injector as defined in Claim 1, wherein: The surface of the tube head (206) is in close contact with the inner side of the seal (208), and the seal (208) is made of elastic material.

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