| 摘要 |
Systems, methods, and devices of the various embodiments enable calibration of continuous non-interfering blood pressure measurement devices. The measured quantity may be related to an arterial lumen or arterial cross sectional area. The arterial cross-sectional area may be related to transmural pressure, and thus the measured quantity may be related to transmural pressure by applying the first relationship to the second relationship. Sensor outputs may be obtained at a number of different heights, while the blood pressure measurement device is attached to the limb of a patient. The obtained sensor outputs may be used to determine a set of unknown parameters associated with the relationship of the transmural pressure to the sensor output. Upon determination of the parameters, the relationship of the transmural pressure to the sensor output may be used to obtain blood pressure measurements. |
| 主权项 |
1. A method for calibrating a blood pressure measurement device, comprising:
determining, by an elevation sensor, an elevation of the blood pressure measurement device; determining, by an arterial measurement sensor, distension of an artery; determining, by a processor of the blood pressure measurement device, a pulse shape; determining, by the processor, whether a change in distension of an artery and elevation of a measurement device occurred between two observation times; determining, by the processor, whether a change in pulse rate has occurred between the two observation times in response to determining that a change in distension of an artery and elevation of a measurement device occurred between two observation times; storing, in a memory, the pulse shape, distension, and elevation in response to determining that the pulse rate is constant; determining, by the processor, a coefficient fitting an exponentially decaying function representing an exponential decay of a portion of a diastolic phase to diastolic parts of measured pulses; and determining, by the processor, a calibration of the arterial measurement sensor based at least in part on the exponentially decaying function and an incremental variation between the two observation times. |
