Artificial Heart Valve Locking Mechanism for Controlled Withdrawal
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Solution Overview
Problem
Existing methods for locking a flexible member to an artificial implant during catheter delivery are inefficient, and the separate outer frame of the artificial implant causes operational inconveniences.
Innovation Solution
A control mechanism with a base, pulling wire, and locking member that allows for precise locking and unlocking of the artificial implant, featuring a rotatable locking member and multiple pulling wires for controlled deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flexible member is used to restrain and lock the artificial implant to the catheter assembly, then the implant can be maintained in a compressed state for delivery, but the existing locking methods are inefficient and complex
Solution Approach 1:
The locking member is divided into distinct functional segments: a body portion that engages with the catheter assembly, a positioning portion that interfaces with the pulling wire, and a movable portion that transitions between locked and unlocked states. This segmentation allows each component to perform its specific function efficiently, simplifying the overall locking mechanism while maintaining reliability.
Solution Approach 2:
The locking member is designed to be movable rather than fixed, allowing it to dynamically transition between locked and unlocked positions. The movable portion can shift along the pulling wire to engage or disengage the locking position, enabling efficient control of the implant's restraint state without complex mechanical systems.
2Adaptability or versatility
If the outer frame is formed separately from the inner frame, then the artificial implant can be constructed with distinct functional components, but this causes operational inconveniences in surgical procedures and positioning
Solution Approach 1:
The outer frame and inner frame are integrated into a unified structure where the outer frame serves dual functions: maintaining the compressed configuration during delivery and providing the locking surface for the locking member. This merging eliminates the need for separate assembly operations and simplifies positioning during surgical procedures, while still allowing the inner frame to perform its specific functional role.
Data Source
AI summary
Disclosed in this application are a control mechanism, a control handle, a delivery system and a control method for an artificial implant, and an artificial heart valve. The control mechanism includes a base, a pulling wire, and a locking member, wherein the pulling wire is configured with a free end which can pass through the artificial implant or be detached from the artificial implant, the locking member movably engaged with the base, and the locking member cooperates with the free end of the pulling wire to lock the artificial implant. After the control mechanism is optimized, the control of the release or withdrawal process of the artificial implant in the body can be achieved by means of mutual cooperation. Compared with existing structures, the control mechanism is more suitable for working inside the body.