Covered stent and covered stent delivery system
CN116407335BActive Publication Date: 2026-07-07LIFETECH SCI (SHENZHEN) CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- LIFETECH SCI (SHENZHEN) CO LTD
- Filing Date
- 2021-12-31
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
Self-expanding covered stents are prone to displacement during deployment, leading to inaccurate deployment and potentially causing irritation and damage to blood vessels.
Method used
A deformable first wave coil is provided at the end section of the covered stent. This wave coil is connected to the delivery device to prevent the sheath from retracting and causing the stent to shift. It also restrains the stimulation and damage to the blood vessel during the release process.
Benefits of technology
It improves the accuracy of covered stent deployment, reduces irritation and damage to blood vessels, and enhances apposition in tortuous blood vessels.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116407335B_ABST
Abstract
The present application relates to a covered stent and a covered stent delivery system, the covered stent comprising: a self-expandable tubular body, a deformable first wave coil and a second wave coil, the tubular body comprising an end section having an open end, the first wave coil movably connected with the end section, and the second wave coil connected with the end section; when the end section is radially compressed to a first state, the first wave coil can at least partially pass over the open end; when the end section is radially expanded from the first state to a second state, the first wave coil is located in an axial area of the end section, and the axial area of the first wave coil at least partially overlaps with an axial area of the second wave coil. The covered stent and the covered stent delivery system can improve the stimulation and damage of the blood vessel during the release process of the covered stent.
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