Integrated Sheath Locking Mechanism for Stable Device Delivery
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Solution Overview
Problem
Minimally invasive medical device delivery systems experience instability during transcatheter procedures, leading to undesirable rotational and translational movements that can impact procedure outcomes and require manual operator stabilization, limiting operational freedom and increasing radiation exposure.
Innovation Solution
Incorporation of a sheath assembly, medical device loader, and/or locking collar with integrated rotational and translational locks to stabilize medical device delivery assemblies, preventing unwanted movement and reducing the need for manual stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If manual operator stabilization is used to prevent rotational and translational movements, then procedure stability is improved, but operator radiation exposure increases and operational freedom is limited
Solution Approach 1:
The locking mechanism enables the delivery system to stabilize itself automatically through rotational and translational locks that engage with the sheath assembly, eliminating the need for continuous manual operator intervention and thereby reducing radiation exposure while maintaining procedural stability
2Stability of the object's composition
If manual operator stabilization is used to prevent rotational and translational movements, then procedure stability is improved, but operational freedom is limited
Solution Approach 1:
The automated locking mechanism performs stabilization functions independently, freeing the operator from manual stabilization tasks and enhancing operational freedom while maintaining procedural stability through mechanical locks
3Stability of the object's composition
If rotational and translational locks are integrated into the sheath assembly, then device stability is improved, but device complexity increases
Solution Approach 1:
The rotational and translational locking mechanisms are integrated into the existing sheath assembly structure, combining multiple stabilization functions within a unified device architecture rather than adding separate independent systems, thereby managing complexity while achieving enhanced stability
Data Source
AI summary
A sheath assembly can include a hub that includes a housing with a delivery lumen extending through it. The delivery lumen can receive a portion of a medical device delivery assembly. A seal can be disposed within the housing. The seal can include a longitudinal lumen which forms a part of the delivery lumen of the housing. The seal can form a hemostatic seal around a corresponding portion of the medical device delivery assembly extending through the longitudinal lumen. An integrated rotational and translational lock can have a portion disposed within the housing proximally of the seal, the rotational and translational lock being able to, in a locked state, engage with a corresponding portion of the medical device delivery assembly extending through it to prevent rotational and translational movement of the medical device delivery assembly relative to the sheath assembly.