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Noninvasive Method and Apparatus to Measure Body Pressure Using Extrinsic Perturbation
Noninvasive Method and Apparatus to Measure Body Pressure Using Extrinsic Perturbation
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机译:非侵入性的利用外在摄动法测量身体压力的方法和装置
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摘要
Current noninvasive blood pressure measurement methods are not able to measure pressure during nonpulsatile blood flow. We propose method to measure intravascular or other compartment pressure which applies extrinsic pressure oscillation. Pressure-volume response of the compressed structure is obtained and compartment pressure is estimated as the extrinsic pressure at which compressed structure has the highest compliance. Delivering extrinsic oscillations at a higher frequency than the pulse rate, pressure reading can be obtained much faster. Because it is not dependant on intrinsic vascular oscillations, pressure can be measured during arrhythmias, during cardiac bypass, during resuscitation, in the venous compartment or in the other nonpulsatile compressible body compartments.
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