Prosthetic Valve Mounting Assembly With Axially Movable Support
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Solution Overview
Problem
Mounting and crimping a prosthetic valve on a delivery apparatus is complex and requires specialized skills, complicating the process of delivering prosthetic heart valves through the body and into the heart.
Innovation Solution
A mounting assembly is provided that includes a coupling member and a valve support member, allowing for the prosthetic valve to be releasably coupled to a crimping device, with the valve support member being axially movable to facilitate crimping and expansion of the prosthetic valve onto a delivery apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex mounting and crimping process is used to secure the prosthetic valve, then the valve can be reliably mounted on the delivery apparatus, but the procedural complexity and skill requirements increase
Solution Approach 1:
The mounting assembly is divided into separate functional components: a coupling member that interfaces with the crimping device and a valve support member that interfaces with the prosthetic valve. This segmentation allows each component to perform its specific function independently, simplifying the overall mounting process while maintaining reliability.
Solution Approach 2:
The valve support member acts as an intermediary component between the prosthetic valve and the crimping device. It provides a support surface for the valve leaflets and enables the crimping force to be applied indirectly, reducing the complexity of directly crimping the valve while ensuring secure mounting.
2Manufacturing precision
If specialized skills are required for mounting and crimping, then precise valve positioning can be achieved, but the time required for training and procedure execution increases
Solution Approach 1:
The mounting assembly is designed to be self-aligning and self-securing. The coupling member and valve support member work together to automatically position the prosthetic valve correctly during the mounting process, reducing the need for specialized skills and minimizing training requirements while maintaining positioning precision.
3Device complexity
If the valve support member is fixed, then the structure is simpler, but the ability to accommodate valve expansion and crimping movements is limited
Solution Approach 1:
The valve support member is designed with axial movability, allowing it to dynamically adjust its position during the crimping and expansion processes. This dynamic capability enables the support member to accommodate the dimensional changes of the prosthetic valve while maintaining a relatively simple overall structure.
Data Source
AI summary
A mounting assembly for crimping a prosthetic valve onto a valve mounting portion of a delivery apparatus is disclosed. The mounting assembly includes a coupling member configured to releasably couple to a crimping device, the coupling member comprising a lumen, and a valve support member configured to be inserted into the prosthetic valve so that leaflets of the prosthetic valve contact and rest upon a support surface of the valve support member. The valve support member can be axially movable relative to the coupling member through the lumen of the coupling member.