Prosthesis Delivery Catheter Alignment for One-Handed Deployment
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Solution Overview
Problem
Existing prosthesis deployment devices are complex, requiring multiple safety buttons or tabs for operation and lack efficient alignment mechanisms, making them difficult to use and prone to misalignment during deployment.
Innovation Solution
A prosthesis deployment device with a single safety button, an alignment indicator spaced from the distal sheath end, and a one-handed operation mechanism, allowing precise alignment and deployment of prostheses using an elongate delivery catheter assembly with a housing assembly connected to an electrosurgical power generator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple safety buttons or tabs are used for prosthesis deployment, then safety and control are improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent combines multiple safety functions into a single safety button mechanism. The safety button simultaneously controls engagement of the prosthesis with the delivery catheter and prevents premature deployment, merging what would traditionally require multiple separate buttons or tabs into one integrated control element.
Solution Approach 2:
The single safety button serves multiple functions: it engages the prosthesis to the delivery catheter during insertion, prevents accidental deployment during transport, and must be deliberately actuated for controlled deployment. This multi-functional design eliminates the need for separate controls for each safety requirement.
2Measurement precision
If alignment mechanisms are added to ensure precise positioning, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent employs color-coded alignment indicators on the delivery catheter that change or become visible when the catheter is properly positioned relative to the prosthesis. This visual feedback mechanism provides precise alignment information without requiring complex mechanical alignment devices, using color changes to indicate correct positioning.
Solution Approach 2:
The alignment indicator acts as an intermediary element between the delivery catheter and the prosthesis, providing visual feedback about relative positioning. This simple intermediary mechanism enables precise alignment without adding complex mechanical alignment systems.
3Ease of operation
If a single safety button is used for one-handed operation, then ease of operation is improved, but control precision may deteriorate
Solution Approach 1:
The safety button is designed with a mechanical linkage system that translates a single pressing motion into coordinated actions: engaging the prosthesis, positioning alignment indicators, and preparing for deployment. The dynamic mechanical design ensures that one-handed operation maintains full control precision through appropriately scaled mechanical advantage and movement transmission.
Data Source
AI summary
Prosthesis deployment devices and methods of a deploying a prosthesis are disclosed herein. In some embodiments, a method of deploying a prosthesis includes advancing a tip of a delivery catheter assembly positioned at a distal region of the delivery catheter assembly into one or more target structures, aligning an alignment indicator in the distal region of the delivery catheter assembly with a proximal surface of a proximal target structure of the one or more target structures, after the alignment indicator is aligned with the proximal surface of the proximal target structure actuating an actuator of a housing assembly operably connected to the delivery catheter assembly and thereby deploying a distal end of the prosthesis in the patient, and actuating the actuator of the housing assembly and thereby deploying a proximal end of the prosthesis in the patient.