Connecting mechanism of needle tube and needle tube seat
By designing a needle tube and needle tube seat connection mechanism with medical grade plastic material placement seat, sealing ring and fixture, the problems of inconvenience in connection, insufficient stability and difficult to guarantee aseptic status in the prior art are solved, and a convenient and efficient connection and disinfection process is achieved.
Patent Information
- Application Number
- CN202420804683.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The connection method between the existing needle tube and the needle tube seat is inconvenient to operate, insufficient stability, easy to loosen or fall off, and difficult to ensure sterile state, resulting in multiple disinfection during reuse, wasting time and affecting efficiency.
A connection mechanism including a placement seat, a needle tube and a needle is designed. By setting up medical-grade plastic plating seat, sealing ring, fixture, cam, spring and movable rod, convenient connection and disconnection between the needle tube and the placement seat, ensuring sealing and sterile state.
It improves the stability and convenience of the connection between the needle tube and the needle tube seat, ensures sterile state, saves disinfection time, improves work efficiency, and reduces production costs.
Smart Images
Figure CN222605136U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, and more specifically, to a connecting mechanism between a needle tube and a needle tube seat. Background Art
[0002] The needle is an important part of the syringe. It consists of a syringe with a small hole at the front end and a matching piston core rod. It is used to inject a small amount of liquid or gas into or extract it from areas that cannot be reached by other methods. During the manufacturing process, glass tubes can be made into extremely fine needles through stretching and forging techniques. The size and mechanical properties of the needle are crucial to its use, and different applications may require needles of different specifications.
[0003] The needle holder is a part of the indwelling needle, which is usually composed of a stainless steel needle core, a soft outer sleeve and a plastic needle holder. Indwelling needles are divided into open and closed types, among which the open type is divided into ordinary type and safety type (anti-needlestick type), and the closed type is also divided into ordinary type and safety type (anti-needlestick type). The design of the needle holder has evolved from the initial open type to the closed type. The modern needle holder design pays more attention to safety. For example, the anti-needlestick safety design can reduce the risk of medical staff contracting blood-borne diseases.
[0004] The existing connection methods between needle tubes and needle tube seats are mostly spiral interfaces or snap-on connections. Although these connection methods can achieve basic fixing functions, they have the following shortcomings: the operation is not convenient enough, and it needs to be rotated or pressed multiple times to complete the connection. The connection stability needs to be improved, and sometimes it becomes loose or even falls off. It is difficult to ensure the sterile state during repeated use. Therefore, the needle tube needs to be disinfected multiple times, which invisibly wastes a lot of working time and greatly affects work efficiency.
[0005] Therefore, in order to solve the above technical problems, the present application proposes a connection mechanism between a needle tube and a needle tube seat. Utility Model Content
[0006] In view of the deficiencies in the prior art, the utility model aims to provide a connection mechanism between a needle tube and a needle tube seat.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connecting mechanism between a needle tube and a needle tube seat comprises a placing seat, a needle tube, and a needle arranged at the bottom of the needle tube, a base is arranged at the bottom of the placing seat, a connecting cavity is opened on the placing seat, a placing cavity is arranged at the bottom of the connecting cavity, a first mounting block and a second mounting block are symmetrically arranged on both sides of the placing seat, a first rotating shaft is arranged between the first mounting block and the second mounting block, a movable rod is rotatably connected to the outer side of the first rotating shaft, a clamp is arranged at one end of the movable rod, and a connecting rod is arranged at the other end, circular grooves are symmetrically arranged on both sides of the placing seat, and the connecting rod is slidably connected in the circular groove, one end of a spring is symmetrically fixedly installed on the placing seat, and the other end of the spring is installed on the movable rod, a square groove is opened between the base and the placing seat, a second rotating shaft is rotatably connected to the base, a rotating seat is installed on the outer side of the second rotating shaft, a rotating rod is fixedly connected to one side of the rotating seat, and a cam is fixedly installed on the rotating seat.
[0008] Preferably, the size of the rotating rod is smaller than the width of the square groove. The advantage is that by setting a rotating rod smaller than the width of the square groove, the rotating rod can be more conveniently rotated freely in the square groove, thereby driving the rotating seat and the cam on the rotating seat to rotate together.
[0009] Preferably, the material of the placement seat is medical grade plastic. The advantage is that by setting the placement seat made of medical grade plastic material, the placement seat can have good biocompatibility and easy disinfection properties, and can keep the needle clean during use and placement, effectively reducing production costs and usage risks, saving a lot of disinfection time, and improving the work efficiency of staff.
[0010] Preferably, a sealing ring is provided at the connection between the needle and the placement cavity. The advantage is that by providing a sealing ring at the connection between the needle and the placement cavity, the sealing performance can be greatly improved to ensure that the liquid in the needle tube will not leak at the connection, thereby maintaining a sterile environment.
[0011] Preferably, there are several springs. The advantage is that by setting the spring, when the cam leaves the connecting rod, the spring can recover its deformation and quickly loosen the clamp, so that the needle tube is no longer clamped, making it convenient for the staff to remove the needle tube from the connecting cavity. The rotary release button and locking ring structure are used to improve the convenience of connection and disconnection.
[0012] Preferably, a rubber pad is provided in the clamp. The advantage is that since the needle tube is often made of glass or plastic, which is relatively fragile, the external structure of the needle tube may be damaged when the external force is very strong, making the needle tube unable to be used normally. The rubber pad has a certain degree of softness and can protect the needle tube when the clamp fixes it to prevent the needle tube from being damaged.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] 1. In the utility model, by providing a placement seat made of medical-grade plastic material and providing a sealing ring at the connection between the needle tube and the placement seat, the placement seat can have good biocompatibility and easy disinfection characteristics, which can ensure that the connection between the needle tube and the placement seat will not leak and keep it clean, saving a lot of disinfection time for the staff, greatly improving work efficiency, and solving the problem in the background technology that it is difficult to ensure a sterile state during repeated use, so that the needle tube needs to be disinfected multiple times, which invisibly wastes a lot of working time;
[0015] 2. In the utility model, by setting a clamp, a cam, a spring, a movable rod and a rotating rod, the rotating rod is rotated to rotate the cam, and then the clamp fixes the needle tube to prevent it from shaking or falling, thereby increasing its service life. This greatly improves the quickness of connection and disconnection, makes the operation more convenient and safe, reduces production costs, improves work efficiency, and solves the problem that the operation in the background technology is not convenient enough, and multiple rotations or presses are required to complete the connection. The connection stability needs to be improved, and sometimes the needle tube becomes loose or even falls off. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0017] Figure 1 It is a structural schematic diagram of the utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the placement seat in the utility model;
[0019] Figure 3 It is a structural schematic diagram of the cam in the utility model;
[0020] Figure 4 It is a schematic diagram of the top view structure of the utility model.
[0021] 1. needle tube; 2. needle; 3. placement seat; 4. base; 5. movable rod; 6. clamp; 7. spring; 8. first mounting block; 9. first rotating shaft; 10. connecting rod; 11. round groove; 12. square groove; 13. cam; 14. rotating seat; 15. rotating rod; 16. second rotating shaft; 17. connecting cavity; 18. needle cavity; 19. second mounting block. DETAILED DESCRIPTION
[0022] like Figure 1-4As shown, the utility model provides a connection mechanism between a needle tube and a needle tube seat, comprising a needle tube 1, and a needle head 2 arranged at the bottom of the needle tube 1, a base 4 is arranged at the bottom of the placement seat 3, a connecting cavity 17 is opened on the placement seat 3, a placement cavity 18 is arranged at the bottom of the connecting cavity 17, a first mounting block 8 and a second mounting block 19 are symmetrically arranged on both sides of the placement seat 3, a first rotating shaft 9 is arranged between the first mounting block 8 and the second mounting block 19, a movable rod 5 is rotatably connected to the outer side of the first rotating shaft 9, and a clamp is arranged at one end of the movable rod 5 6, a connecting rod 10 is provided at the other end, circular grooves 11 are symmetrically provided on both sides of the placement seat 3, and the connecting rod 10 is slidably connected in the circular groove 11, one end of the placement seat 3 is symmetrically fixed with a spring 7, and the other end of the spring 7 is installed on the movable rod 5, a square groove 12 is provided between the base 4 and the placement seat 3, a second rotating shaft 16 is rotatably connected to the base 4, a rotating seat 14 is installed on the outer side of the second rotating shaft 16, a rotating rod 15 is fixedly connected to one side of the rotating seat 14, and a cam 13 is fixedly installed on the rotating seat 14.
[0023] The size of the rotating rod 15 is smaller than the width of the square groove 12. The rotating rod 15 rotates in the square groove 12, thereby driving the cam 13 set on the rotating seat 14 to rotate together. The protruding part of the cam 13 will push the connecting rod 10 outward, so that the clamps 6 on both sides move inward, and then fix the needle tube 1 without shaking or falling, which greatly increases the service life of the needle tube, saves working costs, and quickly connects and disconnects, simplifying the operation process.
[0024] The material of the placement seat 3 is medical grade plastic, and the entire connecting mechanism is made of medical grade plastic material, which ensures the biocompatibility of the product and facilitates disinfection, saves a lot of working time for the staff, and improves the overall work efficiency.
[0025] A sealing ring is provided at the connection between the needle 2 and the placement cavity 18. A small amount of waste liquid is inevitably present in the needle tube 2, which is prone to dripping. A sealing ring is provided at the connection between the needle 2 and the placement cavity 18 to provide good sealing and prevent the waste liquid in the needle tube 2 from leaking, thereby contaminating the sterility of the entire placement seat 3.
[0026] The number of the springs 7 is several. The use of the springs 7 here can enable the clamp to have a certain pushing effect on the connecting rod 10 when leaving the needle tube 2, so that the needle tube 2 can be quickly pulled out. In addition, when fixing the needle tube 2, the spring 7 will slow down the speed of the movable rod 5 to prevent the needle tube 2 from being clamped due to the excessive speed of the movable rod 5.
[0027] A rubber pad is provided in the clamp 6. When the clamp 6 fixes the needle tube 2, the rubber pad has a certain degree of deformability and can protect the needle tube 2 to prevent the needle tube 2 from being damaged due to excessive clamping force.
[0028] Working principle: After using the needle tube 1, the staff will put the needle tube 1 into the connecting cavity 17 of the placement seat 3, and the needle 2 will enter the placement cavity 18. The connecting parts of the needle tube 1 and the placement seat 3 are provided with sealing rings, which can greatly improve the sealing performance and prevent the waste liquid in the needle tube 1 from leaking. Then, the rotating rod 15 is rotated, and the second rotating shaft 16 is rotated. The rotating rod 15 moves in the square groove 12 between the base 4 and the placement seat 3. The rotating rod 15 drives the rotating seat 14 to rotate, and then the cam 13 rotates together. Then the protruding part of the cam 13 contacts one end of the connecting rod 10. As the cam 13 slowly rotates, the connecting rod 10 is slowly moved out of the circular groove. 11 is pushed out, and then the first rotating shaft 9 symmetrically arranged between the first mounting block 8 and the second mounting block 19 on both sides of the placement seat 3 drives the movable rod 5 to move together, and the spring 7 connected between the placement seat 3 and the connecting rod 10 is compressed, so that the movable rods 5 on both sides move inward, and then drive the clamp 6 to move inward, so that the needle tube 1 is fixed and does not shake. When it is needed, the rotating rod 15 is rotated, and the cam 13 no longer resists the connecting rod 10, and then the spring 7 recovers its deformation, pushes the movable rod 5 outward, and the clamp 6 is loosened, and the needle tube 1 is no longer fixed. Then the staff can take out the needle tube 1 for use. The whole mechanism is easy to operate, safe and reliable.
[0029] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.
Claims
1. A connection mechanism between a needle tube and a needle tube seat, comprising a placement seat (3) and a needle tube (1), and a needle head (2) arranged at the bottom of the needle tube (1), characterized in that: The bottom of the placement seat (3) is provided with a base (4), the placement seat (3) is provided with a connecting cavity (17), the bottom of the connecting cavity (17) is provided with a placement cavity (18), the placement seat (3) is symmetrically provided with a first mounting block (8) and a second mounting block (19) on both sides, a first rotating shaft (9) is provided between the first mounting block (8) and the second mounting block (19), a movable rod (5) is rotatably connected to the outer side of the first rotating shaft (9), one end of the movable rod (5) is provided with a clamp (6), and the other end is provided with a connecting rod (10), and the placement seat (3) is symmetrically provided with a first mounting block (8) and a second mounting block (19) on both sides. A circular groove (11) is provided through the base (4), and a connecting rod (10) is slidably connected in the circular groove (11); one end of a spring (7) is symmetrically fixedly installed on the placement seat (3); the other end of the spring (7) is installed on the movable rod (5); a square groove (12) is provided between the base (4) and the placement seat (3); a second rotating shaft (16) is rotatably connected to the base (4); a rotating seat (14) is installed on the outer side of the second rotating shaft (16); a rotating rod (15) is fixedly connected to one side of the rotating seat (14); and a cam (13) is fixedly installed on the rotating seat (14).
2. The connection mechanism between a needle tube and a needle tube seat according to claim 1, characterized in that: The size of the rotating rod (15) is smaller than the width of the square groove (12).
3. The connection mechanism between a needle tube and a needle tube seat according to claim 1, characterized in that: The material of the placement seat (3) is medical-grade plastic.
4. The connection mechanism between a needle tube and a needle tube seat according to claim 1, characterized in that: A sealing ring is provided at the connection between the needle (2) and the placement cavity (18).
5. The connection mechanism between a needle tube and a needle tube seat according to claim 1, characterized in that: The number of the springs (7) is several.
6. The connection mechanism between a needle tube and a needle tube seat according to claim 1, characterized in that: A rubber pad is arranged in the clamp (6).