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Performance characteristics of a pressure microsensor
Kenton R Kaufman1, Tom Wavering, Duane Morrow
1Biomechanics Laboratory, Division of Orthopedic Research, Mayo Clinic, 200 First street, SW, Rochester, MN 55905, USA. kaufman.kenton@mayo.edu
Journal of Biomechanics
|January 28, 2003
Summary
A novel fiber optic microsensor offers precise pressure measurement for medical applications. This miniature device demonstrates high accuracy and reliability, making it suitable for sensitive monitoring tasks.
Area of Science:
- Biomedical Engineering
- Optical Sensors
- Microfabrication
Background:
- Accurate pressure monitoring is critical in various medical fields.
- Existing pressure sensors may face limitations in size, accuracy, or biocompatibility.
- Miniaturized sensors are needed for minimally invasive procedures and implantable devices.
Purpose of the Study:
- To develop and characterize a novel fiber optic microsensor for pressure measurement.
- To evaluate the performance of the microsensor within a clinically relevant pressure range.
- To assess the sensor's accuracy, repeatability, linearity, and hysteresis.
Main Methods:
- Fabrication of a fiber optic microsensor with dimensions of 360 micrometers.
- Performance evaluation across a pressure range of 0 to 250 mmHg.
- Comparison of five sensor prototypes against a NIST-traceable reference pressure standard.
Main Results:
- The fiber optic microsensor achieved accuracy, repeatability, and linearity better than 2% full-scale output (FSO).
- The sensor exhibited a hysteresis of 4.5% FSO.
- Consistent performance was observed across multiple sensor units.
Conclusions:
- The developed fiber optic microsensor is a viable tool for accurate pressure measurement.
- Its small size and performance characteristics make it suitable for biomedical applications.
- Further research can explore its integration into various medical devices for enhanced monitoring.