Artificial Heart Valve Locking Mechanism for Precise Release
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Solution Overview
Problem
Existing methods for locking a flexible member to an artificial implant on a catheter assembly are inefficient, and the separate formation of an outer frame for artificial implants causes operational inconveniences.
Innovation Solution
A control mechanism with a base, pulling wire, and locking member that allows for controlled locking and unlocking of the artificial implant, featuring a rotatable locking member and multiple pulling wires for precise deployment and release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flexible member is used to restrain and lock the artificial implant, then the implant can be maintained in a compressed state, but the existing locking methods are inefficient and complex
Solution Approach 1:
A locking member is introduced as an intermediary component between the pulling wire and the base. The locking member includes a positioning portion that can be inserted into a locking hole on the base, providing a simple yet reliable locking mechanism that avoids complex wire control systems while ensuring the artificial implant remains securely restrained in compressed state
Solution Approach 2:
The locking function is extracted from the complex wire control system and implemented through a dedicated locking member with a positioning portion that engages with a locking hole. This separates the locking function from the overall control mechanism, simplifying the system while maintaining reliability
2Ease of manufacture
If the outer frame is formed separately from the inner frame, then the artificial implant can be assembled, but it causes many inconveniences in surgical operation and positioning
Solution Approach 1:
The outer frame and inner frame are merged into a single integrally formed structure. This integration eliminates the complications associated with separate frame assembly during surgery, providing better positioning stability and operational convenience while maintaining the necessary structural functions for clamping the original aortic valve
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the control of artificial implants by improving the locking mechanism, allowing for more precise and efficient deployment and positioning of the implant, reducing operational complexity.
Implementation Method 1
a locking member rotatably engaged with the base, the locking member having a positioning portion that moves into or out of the locking region during rotation
Implementation Method 2
a pulling wire having a free end that can pass through the artificial implant or be detached from the artificial implant
Data Source
Figure 1a~2b
Figure 3a~5
Figure 6a~8c
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.