一种内镜下使用注射针
By optimizing the symmetrically distributed locking mechanism and sealing structure, the problem of easy loosening of the threaded connection of traditional endoscopic injection needles has been solved, achieving a stable connection of the injection needle and sealing of the medication, thus improving the accuracy and safety of endoscopic surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI TIANYU CHANGAN HEALTH IND GRP CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-17
AI Technical Summary
When traditional endoscopic injection needles are continuously pressurized or maintained in an injection state for a long time, the threaded connection is prone to loosening, leading to drug leakage and increased safety risks.
The symmetrically distributed locking mechanism, through mechanical engagement and sealing structure, enables rapid assembly and disassembly of the injection tubing and syringe, as well as dual axial and radial fixation, including the fitting and sealing of the annular cylinder and the inner annular groove, and the mechanical engagement of the locking rod and the hole.
It significantly improves the precision and safety of endoscopic surgery, avoids drug leakage, reduces the risk of cross-infection, and adapts to the need for rapid replacement in confined operating spaces.
Smart Images
Figure CN224506079U_ABST
Abstract
Claims
1. An endoscopic injection needle comprising a needle barrel (1), a lower end of the needle barrel (1) is provided with an injection hose (2) through a snap connection, a lower end of the injection hose (2) is connected with an injection needle head (3) through a through connection, characterized in that: It also includes a connecting tube (4), the lower end of the syringe (1) is vertically fixed and the connecting tube (4) is provided through it, the inner wall of the connecting tube (4) is provided with an inner annular groove (5) that is connected to its bottom, the upper end of the injection tubing (2) is vertically fixed and the annular cylinder (6) is provided through it, the annular cylinder (6) is inserted into the inner annular groove (5) and forms a locking and fixing, the lower end of the connecting tube (4) is fixedly provided with a connecting ring (7), the connecting ring (7) has two cavities symmetrically opened along its circumference, and each cavity is provided with a locking rod (8) that can move laterally.
2. The injection needle for endoscopic use according to claim 1, characterized in that: The outer walls of the two sides of the annular cylinder (6) are symmetrically provided with locking holes (9), and the inner end of the locking rod (8) is engaged with the inner wall of the corresponding locking hole (9).
3. The injection needle for endoscopic use according to claim 1, wherein: Arc rods (10) are slidably provided on both sides of the inner wall of the connecting ring (7). Adjustment cavities (11) are symmetrically opened on both sides inside the connecting ring (7). A guide rod (12) is horizontally fixed inside the adjustment cavity (11). A guide plate (13) that can slide laterally is sleeved on the guide rod (12). A locking spring (14) is also provided inside the adjustment cavity (11).
4. The injection needle for endoscopic use according to claim 3, characterized in that: One end of the arc-shaped rod (10) is fixed to the upper side wall of the guide plate (13), and the lower side of the guide plate (13) is fixedly connected to the outer side of the locking rod (8).
5. The injection needle for endoscopic use according to claim 3, characterized in that: One end of the locking spring (14) is fixed to the other side of the lower end of the guide plate (13), and the other end is fixed to the inner wall of the adjustment cavity (11).
6. The injection needle for endoscopic use according to claim 1, wherein: An axially movable injection plunger (15) is provided through the top plate of the syringe (1). A piston block (16) is fixedly provided at the lower end of the injection plunger (15). The outer circumferential surface of the piston block (16) is slidably connected to the inner wall of the syringe (1) through a sealing ring.
7. The injection needle for endoscopic use according to claim 1, wherein: The syringe (1) has a fixed and through injection tube (17) on its side wall. The injection tube (17) has a removable sealing plug (18) inside. The outer wall of the sealing plug (18) and the inner wall of the injection tube (17) are engaged with each other.