Remaining needle connector
By designing an automatically closed butt cannula structure in the indwelling needle joint, the problem of lack of protection and sealing in the indwelling needle joint during the infusion gap is solved, effectively protecting infection and easy operation.
Patent Information
- Application Number
- CN202421383024.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The existing indwelling needle connectors lack effective protection and sealing in the infusion gap or infusion treatment, which poses a risk of infection, and the traditional gauze wrapping method is cumbersome and the sealing effect is poor.
A retention needle joint is designed, including the joint body and a butt sleeve. The latter is equipped with a spring, an outer plate and an inner plate. There are holes on the outer plate. The inner plate is connected to the positioning bracket. The joint is automatically closed by the spring's elastic force to form a sealing environment.
This design automatically closes the connector when no infusion is performed, reducing the risk of infection, avoids possible air and fluid leakage problems in traditional wrapping methods, and simplifies infusion operations and reduces the work burden of medical staff.
Smart Images
Figure CN222828894U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of infusion connectors, in particular to an indwelling needle connector. Background Art
[0002] In the medical field, indwelling needles are widely used in patients who need long-term infusion therapy or frequent infusion. The connector of the indwelling needle plays a vital role in the infusion process. It is responsible for connecting the infusion pipeline to ensure that the drug can be accurately and efficiently delivered to the patient's body. However, during the infusion interval or when no infusion therapy is being performed, the protection and sealing of the indwelling needle connector becomes an important issue.
[0003] At present, hospitals often use gauze wrapping to protect the indwelling needle connector to prevent it from being exposed to the external environment and causing infection. However, this traditional method has many shortcomings. First, the sealing effect of the gauze is not ideal, and there is still a certain risk of infection. Secondly, it needs to be wrapped manually each time it is used, and the operation process is relatively cumbersome, which not only increases the workload of medical staff, but may also lead to poor protection effect due to loose wrapping. Utility Model Content
[0004] The purpose of the utility model is to provide an indwelling needle connector to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides an indwelling needle connector, comprising:
[0006] A connector body, one end of which is connected to a needle connecting tube;
[0007] A docking sleeve, one end of which is connected to the inner side of the other end of the joint body, and the inner diameter of the docking sleeve is smaller than the inner diameter of the joint body, a positioning bracket is fixedly installed in the docking sleeve, and an outer plate and an inner plate are slidably installed in the docking sleeve, respectively, the outer plate is located on the side of the positioning bracket away from the joint body, a plurality of leakage holes are opened on the outer plate, and the inner plate is located on the other side of the positioning bracket, a connecting column is connected between the outer plate and the inner plate, a spring is connected between the outer plate and the positioning bracket, the spring can provide an elastic force to push the outer plate outward, so as to drive the inner plate to be blocked in the docking sleeve and abut against the positioning bracket, and pushing the outer plate toward the joint body can make the inner plate move away from the docking sleeve and extend into the joint body.
[0008] Preferably, a through hole is formed on the positioning bracket, and the connecting column is slidably inserted into the through hole.
[0009] Preferably, the positioning bracket is a cross structure, and the through hole is opened at the center position of the positioning bracket.
[0010] Preferably, a first sealing ring is provided at the edge of the outer plate, and a second sealing ring is provided at the edge of the inner plate, and the first sealing ring and the second sealing ring are respectively tightly fitted with the inner wall of the docking sleeve.
[0011] Preferably, the plurality of leakage holes are arranged equidistantly in a ring shape around the center of the outer plate.
[0012] Preferably, an inner side of one end of the joint body close to the butt sleeve is provided with an internal thread, and an outer side of one end of the butt sleeve close to the joint body is provided with a matching external thread.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] In the indwelling needle connector, the spring, outer plate, inner plate and other components arranged inside the docking sleeve can automatically close the connector when no infusion is performed, forming an effective sealed environment. This design not only prevents the invasion of external pollutants such as bacteria and dust, and reduces the risk of infection, but also avoids the problems of air leakage and liquid leakage that may exist in the traditional gauze wrapping method. When the external infusion tube is inserted into one end of the docking sleeve, the docking sleeve channel can be opened by simply holding and pressing, and the docking sleeve channel can be automatically closed after being pulled out, without the need for cumbersome wrapping and untying processes, which greatly reduces the workload of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of the butt joint sleeve in the utility model;
[0017] Figure 3 It is a schematic diagram of the structure of the outer plate of the utility model;
[0018] Figure 4 It is a structural schematic diagram of the positioning bracket in the utility model;
[0019] Figure 5 It is a structural schematic diagram of the inner plate in the utility model.
[0020] The meaning of each number in the figure is:
[0021] 1. Connector body; 2. Docking sleeve; 21. Positioning bracket; 211. Through hole; 22. Outer plate; 221. Leak hole; 222. First sealing ring; 23. Inner plate; 231. Connecting column; 232. Second sealing ring; 24. Spring; 3. Needle connecting tube. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] The utility model provides a retaining needle connector, such as Figure 1-Figure 5 As shown, it includes a joint body 1 and a butt sleeve 2.
[0024] One end of the connector body 1 is connected to a needle connecting tube 3 .
[0025] One end of the docking sleeve 2 is connected to the inner side of the other end of the joint body 1, and the inner diameter of the docking sleeve 2 is smaller than the inner diameter of the joint body 1. A positioning bracket 21 is fixedly installed in the docking sleeve 2, and an outer plate 22 and an inner plate 23 are slidably installed in the docking sleeve 2, respectively. The outer plate 22 is located on the side of the positioning bracket 21 away from the joint body 1, and a plurality of leakage holes 221 are opened on the outer plate 22. The inner plate 23 is located on the other side of the positioning bracket 21. A connecting column 231 is connected between the outer plate 22 and the inner plate 23, and a spring 24 is connected between the outer plate 22 and the positioning bracket 21. The spring 24 can provide an elastic force to push the outer plate 22 outward, so as to drive the inner plate 23 to be blocked in the docking sleeve 2 and abut against the positioning bracket 21. Pushing the outer plate 22 toward the joint body 1 can make the inner plate 23 away from the docking sleeve 2 and extend into the joint body 1.
[0026] When the docking sleeve 2 is not in use, the spring 24 pushes the outer plate 22 outward, and the outer plate 22 drives the inner plate 23 through the connecting column 231 to close the end of the docking sleeve 2 close to the connector body 1 to prevent external bacteria from entering the connector body 1. When in use, by connecting the infusion tube to the end of the docking sleeve 2 away from the connector body 1, the outer plate 22 is pushed close to the positioning bracket 21, and then the inner plate 23 is driven to leave the docking sleeve 2 and extend into the connector body 1, so that the internal channel of the docking sleeve 2 is automatically opened to achieve normal infusion operation. It should be noted that the end of the infusion tube and the end of the docking sleeve 2 can be connected by other means such as snap-fit or threaded connection, and the outer plate 22 can be tightened after connection.
[0027] Preferably, a through hole 211 is provided on the positioning bracket 21 , and the connecting column 231 is slidably inserted into the through hole 211 to provide support and positioning for the sliding of the outer plate 22 and the inner plate 23 .
[0028] Furthermore, the positioning bracket 21 is a cross structure, and the through hole 211 is opened at the center position of the positioning bracket 21, which is conducive to ensuring the sliding stability of the outer plate 22 and the inner plate 23.
[0029] In this embodiment, a first sealing ring 222 is provided at the edge of the outer plate 22, and a second sealing ring 232 is provided at the edge of the inner plate 23. The first sealing ring 222 and the second sealing ring 232 are respectively tightly fitted with the inner wall of the docking sleeve 2 to prevent liquid leakage when the inner plate 23 seals the inside of the docking sleeve 2.
[0030] Preferably, the plurality of leakage holes 221 are arranged in a circular shape at equal intervals around the center of the outer plate 22 so that the liquid can flow evenly.
[0031] Specifically, an inner side of one end of the joint body 1 close to the docking sleeve 2 is provided with an internal thread, and an outer side of one end of the docking sleeve 2 close to the joint body 1 is provided with an adaptable external thread, so as to facilitate quick docking and installation of the docking sleeve 2 and the joint body 1.
[0032] When the indwelling needle connector of the utility model is not in use, the connector body 1 is connected to the external thread of the docking sleeve 2 through the internal thread of its end, ensuring that the docking sleeve 2 is firmly installed on the connector body 1. At this time, due to the elastic force of the spring 24, the inner plate 23 is tightly sealed at the port of the docking sleeve 2 to prevent external bacteria or contaminants from entering. The second sealing ring 232 ensures good sealing between the inner plate 23 and the docking sleeve 2.
[0033] When an infusion operation is required, the medical staff aligns the connector of the infusion tube with the docking sleeve 2 for connection, and the connector of the infusion tube applies pressure to the outer plate 22. This pressure causes the outer plate 22 to move against the elastic force of the spring 24, and the connecting column 231 slides in the through hole 211 of the positioning bracket 21, ensuring the stable movement of the inner and outer plates. As the outer plate 22 moves, the inner plate 23 is also driven to slide toward the connector body 1, thereby opening the internal channel of the docking sleeve 2, so that the infusion tube is connected to the connector body 1.
[0034] After the infusion is completed, when the medical staff disconnects the infusion tube from the docking sleeve 2, the outer plate 22 loses the external pressure, and the spring 24 returns to its original state, pushing the outer plate 22 and the inner plate 23 back to the initial closed position. In this way, the connector body 1 is tightly sealed by the inner plate 23 again, ensuring that it is in a sterile state and waiting for the next use.
[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. An indwelling needle connector, characterized in that: include: A connector body (1), one end of which is connected to a needle connecting tube (3); A butt joint sleeve (2), one end of which is connected to the inner side of the other end of the joint body (1), and the inner diameter of the butt joint sleeve (2) is smaller than the inner diameter of the joint body (1), a positioning bracket (21) is fixedly installed in the butt joint sleeve (2), and an outer plate (22) and an inner plate (23) are slidably installed in the butt joint sleeve (2), the outer plate (22) is located on the side of the positioning bracket (21) away from the joint body (1), and a plurality of leakage holes (221) are opened on the outer plate (22), and the inner plate (23) is located on the positioning bracket (2 1), a connecting column (231) is connected between the outer plate (22) and the inner plate (23), and a spring (24) is connected between the outer plate (22) and the positioning bracket (21). The spring (24) can provide an elastic force to push the outer plate (22) outward, so as to drive the inner plate (23) to be blocked in the docking sleeve (2) and abut against the positioning bracket (21). Pushing the outer plate (22) toward the joint body (1) can make the inner plate (23) move away from the docking sleeve (2) and extend into the joint body (1).
2. The indwelling needle connector according to claim 1, characterized in that: The positioning bracket (21) is provided with a through hole (211), and the connecting column (231) is slidably inserted into the through hole (211).
3. The indwelling needle connector according to claim 2, characterized in that: The positioning bracket (21) is a cross structure, and the through hole (211) is opened at the center position of the positioning bracket (21).
4. The indwelling needle connector according to claim 1, characterized in that: A first sealing ring (222) is provided at the edge of the outer plate (22), and a second sealing ring (232) is provided at the edge of the inner plate (23); the first sealing ring (222) and the second sealing ring (232) are respectively tightly fitted with the inner wall of the docking sleeve (2).
5. The indwelling needle connector according to claim 1, characterized in that: The plurality of leakage holes (221) are arranged in an annular manner and at equal intervals around the center of the outer plate (22).
6. The indwelling needle connector according to claim 1, characterized in that: An internal thread is arranged on the inner side of one end of the joint body (1) close to the butt sleeve (2), and an adaptable external thread is arranged on the outer side of one end of the butt sleeve (2) close to the joint body (1).