Anti-adherence remaining needle
By designing a spiral, uneven, or wavy structure at the front end of the indwelling needle cannula to prevent it from sticking to the wall, the problem of blockage and backflow caused by the yellow 24G indwelling needle sticking to the wall is solved, reducing production costs and improving applicability and comfort.
Patent Information
- Application Number
- CN202511284474.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2025-10-24
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing yellow 24G indwelling needles are prone to adhering to the walls of arteries or veins, leading to problems such as the inability to measure arterial pressure in a timely manner, venous blockage, and fluid or drug reflux. These problems are difficult to resolve with conventional adjustment methods, increasing patient suffering and the workload of medical staff.
Design an indwelling needle that prevents it from adhering to the blood vessel wall. The front end of the cannula adopts a spiral, uneven, or wavy structure to avoid complete adhesion to the blood vessel wall and the formation of a gap for fluid flow. The cannula material is a medical polymer material such as polyurethane or silicone. The cannula and the indwelling needle sheath are detachably connected.
It effectively solves the problems of blockage and backflow caused by adhering to the wall, reduces production costs, is easy to operate, does not increase the workload of medical staff, and improves applicability and comfort.
Smart Images
Figure CN120827657A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of medical devices, and particularly relates to a kind of anti-wall indwelling needle. BACKGROUND
[0002] The use of indwelling needle can reduce the pain and fear of repeated intravenous puncture of sick children, alleviate the anxious mood of parents, facilitate clinical medication, rescue medication for emergency and critical patients, reduce the workload of nurses, and reduce the pain of sick children, so that intravenous indwelling needle is widely used in clinic. For this special group of sick children, the length of time of intravenous indwelling needle and the comfort of sick children become the most concerned problems of nurses and parents, and are also the symbol of successful use and the prerequisite for popularization of indwelling needle.
[0003] In clinical medical practice, yellow 24G indwelling needle (cannula) is widely used. However, such indwelling needle often cannot measure arterial pressure in time due to adhesion to arterial vessel wall, or cannot continue to drip due to blockage of adhesion to venous vessel wall. When combined with anesthesia or pump injection of vasoactive drugs, the problem of liquid or drug reflux to the infusion bottle may also occur. In some cases, the problem can be improved by repeatedly sticking adhesive tape to the tail of the indwelling needle to pull the indwelling needle or adjust the direction, but in some cases, even after sticking adhesive tape or changing the direction of the indwelling needle, the blockage cannot be improved. Some even have blood clots due to outlet blockage, which further block the outlet, and finally need to re-perform indwelling needle catheterization, which not only increases the pain of patients, but also increases the workload of medical staff.
[0004] Therefore, the present application is proposed. SUMMARY
[0005] To solve the above technical problems, the basic idea of the technical scheme of the present application is as follows:
[0006] The application discloses a kind of anti-wall sticking indwelling needle, including indwelling needle cover, puncture, sleeve, needle holder handle, hose and main pipe, the front end of the sleeve is equipped with the special-shaped structure for preventing sticking blood vessel wall, which is used to form liquid flow gap between the tip and blood vessel wall after the sleeve is placed in blood vessel.
[0007] As a preferred embodiment of the application, the special-shaped structure of the front section of the sleeve includes one or more combinations of spiral, uneven or wavy structure.
[0008] As a preferred embodiment of the application, the spiral structure on the sleeve is a spiral sleeve, the uneven structure is a convex sleeve, and the wavy structure is a wavy sleeve.
[0009] As a preferred embodiment of the application, the sleeve is made of medical polymer material, and the medical polymer material includes polyurethane or silicone.
[0010] As a preferred embodiment of the application, the rear end of the indwelling needle cover is connected to the needle holder handle, the hose and the main pipe in sequence, the hose is provided with a flow stop clamp, the end of the main pipe is connected to a heparin cap, and another heparin cap is connected to the outer wall of one side of the main pipe through a side pipe.
[0011] As a preferred embodiment of the application, the sleeve is detachably connected to the indwelling needle cover, and the inner diameter of the sleeve is matched with the outer diameter of the puncture.
[0012] Compared with the prior art, the application has the following beneficial effects:
[0013] According to the application, the front end of the indwelling needle cover is improved to have a spiral, uneven or wavy structure, so that the tip of the puncture does not completely stick to the blood vessel wall after being placed in the catheter, and a certain liquid outlet is reserved, which effectively solves the problems of the prior art, such as the inability to measure arterial pressure in time, the blockage of liquid drop, and the reflux of liquid or medicine.
[0014] The improved structure is simple in material and does not require special materials, thereby reducing the production cost; meanwhile, the operation is simple and basically the same as the catheterization operation of the traditional indwelling needle, without increasing the workload of medical staff.
[0015] The specific embodiments of the application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS
[0016] In the drawings:
[0017] Fig. 1 It is a schematic diagram of the overall structure of the application;
[0018] Fig. 2 It is a schematic diagram of the sleeve structure of the application.
[0019] In the figure: 1. Indwelling needle sleeve; 2. Puncture; 3. Cannula; 31. Convex cannula; 32. Spiral cannula; 33. Corrugated cannula; 4. Needle handle; 5. Flexible tube; 6. Stop clamp; 7. Main tube; 8. Side tube; 9. Heparin cap. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.
[0021] like Figs. 1-2 As shown, an anti-wall-adherence indwelling needle includes an indwelling needle sleeve 1, a puncture 2, a cannula 3, a needle holding handle 4, a hose 5 and a main pipe 7. The front end of the cannula 3 is provided with a special-shaped structure to prevent adhesion to the blood vessel wall. The special-shaped structure is used to form a liquid flow gap between the tip of the cannula 3 and the blood vessel wall after the cannula 3 is placed in the blood vessel.
[0022] Furthermore, the special-shaped structure of the front section of the sleeve 3 includes one or more combinations of spiral, uneven or wavy structures. By setting up a variety of different types of sleeves 3, adaptation selection can be made according to different clinical environments, thereby further improving the applicability of the indwelling needle.
[0023] Furthermore, the spiral structure on the sleeve 3 is a spiral sleeve 32, the uneven structure is a convex sleeve 31, and the wavy structure is a wavy sleeve 33. The sleeve 3 is made of medical polymer materials, and the medical polymer materials include polyurethane or silicone.
[0024] The rear end of the indwelling needle sleeve 1 is connected to the needle holding handle 4, the hose 5 and the main pipe 7 in sequence. The hose 5 is provided with a flow stop clamp 6. The end of the main pipe 7 is connected to the heparin cap 9. The outer wall of one side of the main pipe 7 is connected to another heparin cap 9 through a side pipe 8.
[0025] Furthermore, the sleeve 3 is detachably connected to the indwelling needle sleeve 1, and the inner diameter of the sleeve 3 is adapted to the outer diameter of the puncture 2, so as to facilitate splicing and installation and facilitate operation by medical staff.
[0026] The implementation principle of the anti-wall sticking indwelling needle of the embodiment is as follows: by improving the front end of the indwinding needle sleeve 1 into a spiral, uneven or wavy structure, after the puncture 2 is placed into the indwelling needle sleeve 1, the tip will not completely adhere to the blood vessel wall, and a certain liquid outlet can be reserved, effectively solving the problems of the existing indwelling needle, such as the inability to measure the arterial pressure in time, the blockage of the liquid drop, and the reflux of the liquid or the medicine, and the like caused by the wall sticking, meanwhile, the improved structure is simple in material, and special materials are not required, thereby reducing the production cost; wherein the operation is simple, and the catheterization operation is basically the same as that of the traditional indwelling needle, and the workload of the medical staff is not increased; secondly, the spiral, uneven and wavy structure design has diversity, and the appropriate front end structure can be selected according to different blood vessel conditions and clinical needs, thereby improving the applicability and practicality of the indwelling needle.
Claims
1. A wall stay away catheter, comprising a catheter jacket (1), a puncture (2), a cannula (3), a needle holder handle (4), a hose (5) and a main tube (7), characterized in that: The front end of the sleeve (3) is provided with a special-shaped structure for preventing adhesion to the blood vessel wall, which is used to form a liquid flow gap between the tip of the sleeve (3) and the blood vessel wall after the sleeve (3) is placed in the blood vessel.
2. The anti -adhesion indwelling needle according to claim 1, wherein The special-shaped structure of the front section of the sleeve (3) includes one or more combinations of spiral, uneven or wavy structures.
3. The anti -adhesion indwelling needle according to claim 2, wherein The spiral structure on the sleeve (3) is a spiral sleeve (32), the uneven structure is a convex sleeve (31), and the wavy structure is a wavy sleeve (33).
4. The anti -adhesion indwelling needle according to claim 1, wherein The sleeve (3) is made of a medical polymer material, and the medical polymer material includes polyurethane or silicone.
5. The anti -adhesion indwelling needle according to claim 1, wherein The rear end of the indwelling needle sleeve (1) is sequentially connected to the needle holding handle (4), the hose (5) and the main pipe (7), the hose (5) is provided with a flow stop clamp (6), the distal end of the main pipe (7) is connected to a heparin cap (9), and the outer wall of one side of the main pipe (7) is connected to another heparin cap (9) through a side pipe (8).
6. The anti -adhesion indwelling needle according to claim 2, wherein The sleeve (3) and the indwelling needle sleeve (1) are detachably connected, and the inner diameter of the sleeve (3) is matched with the outer diameter of the puncture (2).