Cannula assembly
CN119486672APending Publication Date: 2025-02-18ALCON INC
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Patent Information
- Application Number
- CN202380050796.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-09-13
- Filing Date
- 2023-08-25
- Publication Date
- 2025-02-18
AI Technical Summary
Technical Problem
During ocular surgery, traditional cannulation assemblies are difficult to effectively prevent the escape of pressurized fluid, and require high insertion forces when inserting and withdrawing the instrument, and are complex in assembly.
Method used
A windowless cannula assembly is designed, including a cannula head with wings and a hollow rod, the hub has an annular undercut and a pressure relief cutout, and the valve has a concave diaphragm to reduce insertion force.
Benefits of technology
This design reduces insertion force, improves the ease of insertion of the instrument, prevents the escape of pressurized fluid, and simplifies the assembly process.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN119486672A_ABST
Abstract
Certain embodiments herein disclose a cannula assembly (200). The cannula assembly (200) includes a cannula (210) having a proximal end (214) and a distal end (218). The cannula (210) includes a head (212) at the proximal end (214), the head (212) having one or more wings (236a-c). The cannula (210) also includes a hollow shaft (216) extending from the head (212) to the distal end (218). The cannula assembly (200) also includes a hub (250) coupleable to the head (212) and having a housing (252) with an inner wall (259). The inner wall (259) includes an undercut (264), and one or more distal ends (239a-c) of the corresponding one or more wings (236a-c) are configured to press fit to the undercut (264) and couple the hub (250) to the head (212) when the head (212) is inserted into the hub (250).
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