Debulking Catheter Linear-Force Indicator for Tissue and Motor Protection
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Solution Overview
Problem
Existing debulking catheters lack effective feedback mechanisms to prevent excessive linear force application during tissue removal, which can lead to tissue damage and motor damage.
Innovation Solution
Incorporation of a linear-force indicator, such as an articulating coupler or slide coupler, to provide feedback to the user when the applied force exceeds a predetermined threshold, preventing excessive force transmission to the occlusion and protecting the motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a debulking catheter is used to remove tissue from a body lumen, then tissue removal effectiveness is improved, but excessive linear force can cause tissue damage and motor damage
Solution Approach 1:
The patent incorporates a linear-force indicator that provides real-time feedback to the user about the amount of linear force being applied to the advancer. This feedback mechanism includes visual indicators (such as colored zones or LED lights) that change based on the force level, allowing the user to adjust their applied force to remain within safe thresholds and prevent tissue or motor damage while maintaining effective tissue removal.
Solution Approach 2:
The patent implements a mechanical stop or threshold mechanism that prevents excessive force application before damage can occur. The advancer is designed with a predetermined force threshold that, when reached, triggers a protective response (such as a mechanical block or visual warning), cushioning against potential tissue or motor damage before it happens.
2Reliability
If linear force feedback is added to the debulking catheter, then safety and control are improved, but device complexity increases
Solution Approach 1:
The linear-force indicator uses a mechanically-linked feedback system where the indicator element is directly coupled to the advancer through a force-sensing mechanism. This mechanical coupling provides intuitive, real-time feedback without requiring complex electronic sensors or digital displays, thereby improving safety and control while minimizing the increase in device complexity.
Data Source
AI summary
A debulking catheter includes an advancer for advancing a tissue-removing clement, and a linear-force indicator. The linear-force indicator provides feedback to the user based on an amount of linear force being applied to the advancer.