一种静脉留置针
By connecting the needle handle to the anti-needle-puncture component with a flexible pull cord, the problem of accidental needle tip injury during the removal of intravenous indwelling needles is solved, production costs and processing difficulty are reduced, and safe and reliable needle core removal is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
- Filing Date
- 2025-03-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing intravenous catheters are prone to causing accidental injury when the needle core is removed, and they also increase production costs and processing difficulty. A variable diameter structure needs to be set on the needle core to prevent needle puncture, but this affects the function of the needle core and increases costs.
A flexible pull cord is used to connect the needle handle and the anti-needle puncture component. The straightening action of the flexible pull cord allows the anti-needle puncture component and the needle core to be pulled out together, avoiding the needle core being exposed. The ingenious structural design eliminates the need for additional processing on the needle core, reducing production costs.
This design allows the anti-needle-puncture component to be pulled out together with the needle core, reducing production costs and processing difficulty, while avoiding the risk of accidental needle tip injury and meeting hygiene and disinfection requirements.
Smart Images
Figure CN224506009U_ABST
Abstract
Claims
1. An indwelling intravenous needle, comprising a tubing assembly (1) and a needle core assembly (2), wherein the tubing assembly (1) includes a needle hub (11) and a tubing (12) connected to the needle hub (11), and the needle core assembly (2) includes a needle handle (21) and a needle core (22) connected to the needle handle (21); a needle puncture prevention component (3) for securing the tip of the needle core is detachably connected to the rear end of the needle hub (11), and the needle core (22) passes through the needle puncture prevention component (3) and is inserted into the tubing (12), characterized in that, A flexible pull rope (4) is connected between the needle handle (21) and the anti-needle puncture component (3). The flexible pull rope (4) is stored between the two and its length matches the length of the needle core (22), so that the anti-needle puncture component (3) is sleeved on the end of the needle core (22) when the flexible pull rope (4) is fully straightened.
2. The intravenous indwelling needle of claim 1 wherein, The anti-needle puncture component (3) includes an overall cylindrical shell (31), with a receiving cavity (32) at one end of the shell (31) facing the needle handle (21), and the flexible pull cord (4) is housed in the receiving cavity (32).
3. The intravenous indwelling needle of claim 2 wherein, The needle handle (21) has an insert section that matches the inner diameter of the receiving cavity (32) and is inserted into the receiving cavity (32).
4. The intravenous indwelling needle of claim 2 wherein, The flexible pull rope (4) is folded or spiraled and housed in the receiving cavity (32) in the stored state.
5. The intravenous indwelling needle of claim 2 wherein, The flexible pull rope (4) is provided with at least two ropes, which are distributed circumferentially along the needle handle (21).
6. The intravenous indwelling needle of claim 2 wherein, The flexible draw rope (4) is made of nylon thread, silk thread or polyester thread.
7. The intravenous indwelling needle of claim 2 wherein, The front end of the housing (31) has a plug (33) that matches the inner diameter of the needle seat (11), and the plug (33) is detachably inserted into the needle seat (11).
8. The intravenous indwelling needle of claim 7 wherein, The plunger (33) has a rubber strip (34) extending circumferentially, the rubber strip (34) protruding relative to the outer surface of the plunger (33) and compressively fitting onto the needle seat (11).
9. The intravenous indwelling needle of claim 2 wherein, The outer casing (31) has a spring piece (35) arranged along the length direction. One end of the spring piece (35) facing the needle seat (11) has a hook (36) bent towards the middle. The hook (36) elastically contracts and abuts against the side wall of the needle core (22).