Tonometry sensor calibration apparatus

Details Tonometry sensor calibration apparatus Tonometry sensor calibration apparatus

A - Human Necessities

61

B

A61B 5/021 (2006.01) A61B 5/022 (2006.01)

Patent

CA 2110915

2110915 9222242 PCTABS00018 A calibration apparatus for use in calibrating a tissue stress sensor used in a blood pressure monitoring system. The calibration apparatus includes a calibration head (40) which is adapted to be retained in close proximity to a tissue stress sensor (14). The calibration head includes means for heating (41) the tissue stress sensor. A calibration system is also disclosed for calibrating a blood pressure monitoring system, the blood pressure monitoring system employing a stress sensor (14) for generating an electric output signal representative of tissue stress data. The calibration system comprises a tissue stress sensor having a displaceable diaphragm (34) and a sealed chamber. The chamber has a continuous wall defining an inner volume and an outer volume. The displaceable diaphragm (34) comprises a portion of the continuous wall, whereby the displaceable diaphragm is responsive to a pressure differential between the inner chamber volume and the outer chamber volume.

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