| 摘要 |
<p>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.</p> |
