Atherectomy Burr Control With Haptic Feedback for Vessel Protection
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Solution Overview
Problem
Current atherectomy devices face challenges in effectively removing occlusive material from blood vessels without damaging the surrounding vessel wall or previously implanted stents, and there is a need for improved monitoring and feedback mechanisms to ensure proper operation during the procedure.
Innovation Solution
An atherectomy device system with a drive mechanism and control system that includes a monitoring module to detect operating parameters such as speed, torque, and run time, and an excitation module providing haptic feedback to the user if these parameters are outside predetermined ranges, ensuring safe and efficient operation of the atherectomy burr.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a drive mechanism is used to rotate the atherectomy burr, then the efficiency of removing occlusive material is improved, but the risk of damaging the vessel wall or stent increases due to excessive speed or torque
Solution Approach 1:
The system incorporates a monitoring module that continuously monitors drive mechanism operation and provides real-time feedback through haptic feedback when parameters exceed safe thresholds. This closed-loop feedback system prevents excessive speed or torque that could damage the vessel wall or stent while maintaining efficient occlusive material removal.
Solution Approach 2:
The drive mechanism operates with dynamically adjustable parameters, allowing the system to optimize burr rotation speed and torque based on real-time conditions. The monitoring module detects when parameters approach unsafe levels and triggers haptic feedback to prompt operator adjustment, enabling dynamic adaptation to prevent damage while maintaining productivity.
2Reliability
If real-time monitoring of drive mechanism parameters is implemented, then the safety of the procedure is improved, but the device complexity increases
Solution Approach 1:
The monitoring system uses haptic feedback through the handle to communicate parameter status to the operator, eliminating the need for complex display interfaces or multiple control components. This tactile feedback mechanism provides safety monitoring while maintaining relatively simple device architecture.
Solution Approach 2:
The monitoring module automatically detects when drive parameters exceed predetermined thresholds and triggers haptic feedback without requiring additional operator intervention or complex external monitoring equipment. The system self-monitors and self-communicates status through the handle vibration, reducing overall system complexity.
3Ease of operation
If haptic feedback is provided through handle vibration, then the ease of operation is improved by providing intuitive feedback, but the device complexity increases due to additional components
Solution Approach 1:
The handle serves as an intermediary component that both transmits operator control to the drive mechanism and delivers haptic feedback to the operator. This dual-function handle design provides intuitive tactile feedback without requiring separate feedback devices, maintaining ease of operation while limiting complexity growth.
Solution Approach 2:
The handle is designed with multi-functionality, serving both as the control interface for operating the drive mechanism and as the feedback delivery mechanism through vibration. This universal component performs multiple functions, providing intuitive user feedback while avoiding the need for additional dedicated feedback components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively removes occlusive material while minimizing damage to the vessel wall and stents, providing real-time feedback to the user to prevent excessive resistance or inefficiencies during the procedure.
Implementation Method 1
The excitation module, when actuated, causes a detectable vibration within the handle
Data Source
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AI summary
An atherectomy system includes a drive mechanism adapted to rotatably actuate an atherectomy burr and a control system that is adapted to regulate operation of the drive mechanism. The drive mechanism may include a drive cable that is coupled with the atherectomy burr and a drive motor that is adapted to rotate the drive cable. The control system includes a drive module adapted to provide an operational signal to operate the drive mechanism, a monitoring module adapted to monitor operation of the drive mechanism and to determine if the drive mechanism is operating within a predetermined range and an excitation module that is operably coupled to the drive mechanism and is adapted to provide haptic feedback to a user of the drive mechanism if the monitoring module determines that the drive mechanism is not operating within a predetermined range.