Delivery system for a prosthetic heart valve

By designing a delivery tool with manipulable catheters and longitudinal implant holders, the challenges of axial and rotational control of implants in transcatheter aortic valve replacement surgery were solved, achieving stable and safe implant delivery and improving the success rate of the procedure.

CN122249180APending Publication Date: 2026-06-19THE GLOBAL HEART VALVE INNOVATION CENTER (ISRAEL) LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
THE GLOBAL HEART VALVE INNOVATION CENTER (ISRAEL) LTD
Filing Date
2024-11-14
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing technologies have difficulty effectively controlling the axial and rotational movement of the implant during transcatheter aortic valve replacement surgery, and the safety mechanism design is insufficient, which may cause the implant to detach from the delivery tool prematurely.

Method used

A delivery tool has been designed, comprising a manipulable catheter and a longitudinal implant retainer. Through independent control of the proximal and distal capsule portions, combined with a safety mechanism, the stability and safety of the implant are ensured during delivery. The tool includes a proximal capsule lock, a locking sleeve, and an intermediate tube, achieving axial and rotational locking through specific movement mechanisms to prevent premature implant dislodgement.

Benefits of technology

It achieves precise axial and rotational control of the implant, ensuring the stability and safety of the implant during delivery, avoiding premature detachment, and improving the success rate and safety of the surgery.

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Abstract

An implant delivery tool includes proximal and distal capsule portions (51, 53) and an elongated implant retainer (40) including proximal and distal capsule movement tubes (301, 310). A safety mechanism (300) includes a proximal capsule locking member (302), a sleeve (312), and an intermediate tube (314) having a collapsible proximal end portion (318) formed by at least two elongated teeth (320), each tooth having a proximal engagement element (322). In the locked state of the safety mechanism (300), a shoulder (308) of the proximal capsule locking member (302) is located distal to a plurality of proximal engagement elements (322), and the sleeve (312) is within the tube (314) such that the outer surface of the sleeve (312) is located between the plurality of elements (322), preventing the plurality of teeth (320) from retracting. Multiple proximal engagement elements (322) of the multiple teeth (320) remain engaged with the shoulder (308) and restrict proximal movement of the proximal capsule portion (51). Other embodiments are also described.
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