Delivery inner tube, delivery structure, and interventional procedure delivery system

By designing a rotatable, interlocking ring connection structure and reinforcing through-slot components, the tensile strength and bending performance of the delivery tube are improved, solving the problem of unstable implant release in the heart valve delivery system and ensuring the safety and stability of interventional surgery.

CN116269931BActive Publication Date: 2026-06-12SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO LTD
Filing Date
2021-12-21
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

The existing heart valve delivery system has poor tensile strength and bending performance of the inner tube, which leads to unstable implant release, easy movement, and easy displacement due to blood flow, posing a risk of tissue damage.

Method used

Design a conveying inner tube that uses a head section ring, multiple intermediate sections rings and a tail section ring connected in series. Utilize a rotatable and fitting connection and mating structure to enhance tensile strength and flexural modulus. Reinforcing grooves and channels are provided on the outer wall of the sections rings, and reinforcing components are installed to improve overall rigidity.

Benefits of technology

This achieves stable release of the implant, reduces movement, avoids displacement of the delivery tube, ensures the safety of the interventional procedure, and prevents tissue damage.

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    Figure CN116269931B_ABST
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Abstract

The present application relates to a kind of delivery inner tube, delivery structure and interventional operation delivery system.The delivery inner tube is applied to the delivery structure of interventional operation delivery system, the delivery inner tube includes: head ring, the end of the head ring has first matching part;Multiple intermediate rings, one end of each intermediate ring has first connecting part, the other end has second matching part;Wherein the first connecting part of one of the intermediate rings is embedded in the second matching part of another intermediate ring, and can rotate in the second matching part;And tail ring, the end of the tail ring has second connecting part.By the rotatable embedding of connecting part and matching part, the tensile strength and bending modulus of delivery inner tube can be increased, the deformation rate is reduced, the rigidity of overall structure is improved, the stable release of implant is realized, the movement of implant during release is reduced, the safety of interventional operation is guaranteed, and the damage to body tissue is avoided.
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