Footswitch Calibration via Movement Response Monitoring
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Solution Overview
Problem
Existing footswitches in medical environments often fall out of electro-mechanical alignment due to aging components or mechanical dislocation, leading to downtime as they are typically removed from service for repair when alignment issues, such as dead zones or nonlinearities, are detected.
Innovation Solution
A method and apparatus for calibrating footswitches that involves instructing users to operate the device to predetermined positions while monitoring movement, modifying movement responses when irregularities are detected, and applying these modified responses during medical procedures to maintain device functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If footswitches are removed from service for repair when alignment issues are detected, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The system performs preliminary calibration actions by storing corrected movement responses in a lookup table during periods when the footswitch is not in use. This allows the calibration data to be prepared in advance, so that when the footswitch is next used, the corrected responses are already available and can be applied immediately without interrupting service.
Solution Approach 2:
The patent replaces manual mechanical calibration procedures with an automated electronic system. A processor automatically detects movement irregularities, retrieves corrected responses from stored calibration data, and applies compensations electronically. This substitution eliminates the need for manual disassembly and mechanical adjustment, dramatically reducing downtime while maintaining calibration precision.
2Productivity
If footswitches are operated continuously without calibration, then productivity is improved, but measurement precision deteriorates
Solution Approach 1:
The footswitch system performs self-calibration by automatically detecting its own movement irregularities and applying corrections from stored calibration data. The system monitors its own performance during operation, identifies deviations from expected movement patterns, and autonomously applies compensation without requiring external intervention or removal from service, thus maintaining both productivity and precision.
Solution Approach 2:
The system implements continuous feedback by monitoring footswitch movement responses during operation and comparing them against expected patterns. When irregularities are detected, the system retrieves pre-calibrated correction data and applies it to compensate for the deviations. This closed-loop feedback mechanism ensures measurement precision is maintained throughout continuous operation without requiring the device to be taken offline.
Data Source
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AI summary
A method and apparatus for calibrating a medical device operable in at least one axis of movement, such as a footpedal or footswitch, is provided. The design includes instructing a user to operate the device to a first predetermined position in a first axis of movement while concurrently monitoring movement of the device to establish a set of movement responses, prompting the user to indicate when the first predetermined position in the first axis is attained modifying the set of movement responses when movement response irregularities are detected, thereby establishing a modified set of movement responses, and employing the modified set of movement responses during a medical procedure.