A delivery system

CN122163377APending Publication Date: 2026-06-09SHENZHEN WECAN MEDICAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN WECAN MEDICAL TECHNOLOGY CO LTD
Filing Date
2024-12-09
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing stent delivery systems are insufficient to meet the needs of highly stenotic blood vessels caused by carotid plaques, requiring expansion before and after stent deployment to ensure that the stent fully expands and adheres to the vessel wall.

Method used

A delivery system comprising a sheath assembly, a core assembly, and a balloon assembly was designed. By utilizing the multi-state expansion and contraction of the balloon assembly, pre-dilation before and post-deployment of the stent is achieved, reducing excessive pressure on the blood vessel and improving the stent deployment effect.

Benefits of technology

This approach enabled the successful release and expansion of the stent, reduced surgical time, lowered the risk of infection, improved the fit between the stent and the blood vessel, and met the needs of carotid artery reconstruction.

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Abstract

This invention relates to a delivery system comprising: a sheath assembly including an outer sheath and a first handle connected to the proximal end of the outer sheath; a core assembly including an inner sheath core and a second handle connected to the proximal end of the inner sheath core, the inner sheath core being movably inserted within the outer sheath; a receiving space for accommodating a stent being formed between the outer wall of the inner sheath core and the inner wall of the outer sheath; and a balloon assembly connected to the outer wall of the inner sheath core and located distal to the receiving space, the balloon assembly having a contracted state and an inflated state. The outer sheath can be moved relative to the inner sheath core under the actuation of the first handle, thereby sequentially releasing the balloon assembly and the stent accommodated within the receiving space. No additional balloon catheter is required for pre- and post-stent release dilation.
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