Stent system

CN122297206APending Publication Date: 2026-06-30LIFETECH SCI (SHENZHEN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LIFETECH SCI (SHENZHEN) CO LTD
Filing Date
2024-12-31
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

During the implantation of covered stents in aortic aneurysms or arterial dissections involving branch vessels, the guidewire is difficult to accurately select the branch vessels and is prone to entanglement, increasing the difficulty and time of the operation.

Method used

A stent system was designed, including a covered stent, a delivery device, and a pre-placed catheter. The pre-placed catheter allows the guidewire to pass through the branch stent, simplifying the process of selecting the guidewire for the branch vessel and avoiding entanglement between the guidewire and the main stent.

Benefits of technology

This reduces the difficulty of selecting branch vessels with the guidewire, shortens the operation time and difficulty, and improves the safety and efficiency of the operation.

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Abstract

This invention relates to a stent system comprising a covered stent and a delivery device. The covered stent includes a main stent, a semi-binding structure, and a branch stent. The lumen of the branch stent communicates with the lumen of the main stent. The main stent includes a main wavering coil and a main covering, with the main covering covering the main wavering coil. The semi-binding structure releasably binds the main stent to allow radial compression or release. The stent system also includes a pre-placed catheter extending within the lumen of the main stent, with its distal end extending through the branch stent. The stent system provided by this invention allows superselective guidewires to be inserted into branch vessels via the pre-placed catheter, reducing the difficulty of guidewire superselection and avoiding the problem of guidewire entanglement with the ultra-rigid guidewire of the main stent. This facilitates guidewire insertion into branch vessels, reduces surgical time, and lowers surgical difficulty.
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