Endoscope Sensor Laser Interference Mitigation
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Solution Overview
Problem
Endoscopic sensors face interference and saturation during laser procedures, such as lithotripsy, due to extreme changes in environmental conditions caused by laser pulses, which disrupt accurate measurements of physical characteristics like pressure and temperature.
Innovation Solution
An endoscopic system that synchronizes sensor measurements with laser pulse characteristics, determining a measurement time period based on laser pulse start and characteristics to avoid interference, generating control signals to power gate or normalize sensor data, ensuring accurate readings during and after laser pulses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are used during laser procedures to monitor environmental conditions, then real-time measurement capability is improved, but measurement accuracy deteriorates due to laser interference and sensor saturation
Solution Approach 1:
The system performs preliminary actions by determining the measurement time period in advance based on laser pulse characteristics before actual measurement occurs. The processor calculates when laser pulses will occur and pre-schedules sensor measurements to happen during safe time windows, preventing interference before it occurs.
Solution Approach 2:
The system implements periodic action by synchronizing sensor measurements with the periodic laser pulse pattern. The processor receives laser pulse characteristics including frequency and timing, then schedules measurements periodically during intervals between laser pulses, creating a rhythmic measurement pattern that avoids continuous interference.
2Productivity
If continuous sensor monitoring is performed during lithotripsy procedures, then real-time environmental data acquisition is improved, but data reliability deteriorates due to extreme condition changes from laser pulses
Solution Approach 1:
The system performs preliminary calculation of the measurement time period based on laser pulse characteristics before measurements begin. This advance planning ensures that measurements are scheduled during reliable time windows, maintaining data reliability while optimizing the acquisition rate within safe measurement opportunities.
Solution Approach 2:
The system uses feedback by receiving laser pulse characteristics from the lasing console and using this information to dynamically adjust measurement timing. The processor continuously monitors laser operation status and synchronizes measurement scheduling with actual laser pulse patterns, ensuring measurements occur during reliable periods.
3Adaptability or versatility
If sensors operate during active lasing, then procedural monitoring capability is improved, but measurement usefulness deteriorates due to sensor saturation and bias from extreme conditions
Solution Approach 1:
The system implements dynamics by making the sensor operational state adaptive rather than fixed. The processor dynamically controls sensor operation based on real-time laser pulse characteristics and determined measurement time periods, allowing the sensor to operate during safe intervals while remaining inactive during harmful laser pulses, thus optimizing both flexibility and accuracy.
Data Source
AI summary
Described herein is an endoscopic system for use with a laser source. The endoscopic system is configured to synchronize measurement, captured by an endoscopic sensor, of physical characteristics of an environment with lasing by the laser source. The endoscopic system is further configured to modify measurements captured by the endoscopic sensor based on lasing by the laser source.