Cardiac Prosthesis Delivery Device Haptic Feedback Mechanism
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Solution Overview
Problem
Existing delivery devices for cardiac prostheses lack effective feedback systems to communicate the loading and deployment stages of the prosthesis, which can lead to user uncertainty and potential damage to haptic elements during use.
Innovation Solution
The delivery device incorporates a feedback system with haptic elements, including a sheath and a shaft with a handle connected to both, featuring a feedback mechanism with ridges and a clip that provides tactile and audio feedback to indicate the position and deployment status of the prosthesis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a feedback system is integrated into the handle actuating mechanisms, then feedback functionality is provided, but haptic elements may be damaged during use and operation becomes less smooth
Solution Approach 1:
The feedback system is segmented into a separate modular unit that can be attached to or removed from the handle assembly. This allows the feedback mechanism to be isolated from the actuating mechanisms, preventing damage to haptic elements while maintaining feedback functionality. The segmented design enables independent optimization of each component.
Solution Approach 2:
An intermediary coupling mechanism is introduced between the feedback system and the handle assembly. This intermediary element acts as a buffer that protects the delicate haptic elements of the feedback system from damage during actuation while still transmitting the necessary mechanical movements for feedback generation.
2Device complexity
If the feedback system is integrally formed with the handle, then structural compactness is achieved, but haptic variables cannot be customized without affecting other functions
Solution Approach 1:
The feedback system is designed as a separate modular module that can be independently configured and attached to the handle. This segmentation allows different feedback mechanisms with varying haptic characteristics to be used with the same handle assembly, enabling customization without redesigning the entire handle structure.
Solution Approach 2:
The handle assembly is designed with a universal interface that can accommodate multiple types of feedback systems. This universal coupling mechanism allows the same handle to work with different feedback modules having various haptic properties, achieving both structural simplicity and customization capability.
3Reliability
If the feedback system is spaced from actuating mechanisms, then haptic elements are protected and operation is smoother, but device structure becomes more complex
Solution Approach 1:
The feedback system is designed to nest within or alongside the handle assembly in a compact configuration. When not in use, the feedback module can be stored in a recess or attached in a space-efficient manner, minimizing the overall device footprint while maintaining the protective spacing between haptic elements and actuating mechanisms.
Data Source
AI summary
Delivery devices for delivering a cardiac prosthesis to a target site are disclosed. Such devices can be used with a feedback system including haptic elements incorporated into the delivery device for providing tactile and/or audio feedback regarding the loading and/or deployment of the prosthesis. Certain disclosed delivery devices include a handle including an actuator, a sheath interconnected to the handle for selectively sheathing the prosthesis. The feedback system can be provided within the handle and configured to provide one or more feedback indications relating to the position of the sheath with respect to the prosthesis during loading and/or deployment of the prosthesis.