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Development of an arterial tonometer sensor.
Eun Guen Kim1, Ki Chang Nam, Hyun Heo
1Korea Electrotechnology Research Institute, Ansan, Korea. kimeg917@keri.re.kr
Researchers created an arterial tonometer sensor array using piezoresistive elements and PDMS coating. This device shows promise for accurately measuring arterial pressure, with potential for improved reliability.
Area of Science:
- Biomedical Engineering
- Materials Science
Background:
- Arterial tonometer sensors are crucial for non-invasive blood pressure monitoring.
- Developing reliable and sensitive tonometer arrays requires advanced material and sensor design.
Purpose of the Study:
- To develop a novel arterial tonometer sensor array.
- To investigate the effect of polydimethylsiloxane (PDMS) coating thickness on sensor performance.
- To enhance the reliability of sensor connections through design optimization.
Main Methods:
- Fabrication of an arterial tonometer sensor array utilizing piezoresistive sensor elements and PDMS coating.
- Comparison of computer simulations with experimental measurements for sensor pressure response.
- Analysis of pressure attenuation ratios based on PDMS coating thickness.
Main Results:
- The study achieved a functional arterial tonometer sensor array.
- A 3mm PDMS coating resulted in pressure attenuation ratios of 0.2145 (simulation) and 0.2952 (measurement).
- The proposed method allows for determining sensor array sensitivity based on PDMS coating thickness.
Conclusions:
- The developed arterial tonometer sensor array shows potential for accurate pressure sensing.
- Optimizing PDMS coating thickness is key to tuning sensor sensitivity.
- Separate design of sensor bonding and wire bonding layers can improve overall device reliability.
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