HANDLER, JONATHAN,MARTUCCI, JAMES,HOCKING, KYLE,EAGLE, SUSAN,BROPHY, COLLEEN,BOYER, RICHARD,BAUDENBACHER, FRANZ
申请号：
CA3084143
公开号：
CA3084143A1
申请日:
2018.12.14
申请国别(地区):
CA
年份:
2019
代理人:
摘要：
Devices, systems, and methods for filtering medical device noise artifacts from circulatory waveform signals are disclosed. A circulatory pressure is measured and transformed from the time domain to the frequency domain for analysis to determine patient status. To avoid artifacts of the pumping, the time-domain measurements are filtered to generate a filtered time-domain signal, by removing active pumping periods. The filtered time-domain signal is transformed into a frequency-domain signal, which is analyzed based upon peaks indicating respiratory rate, heart rate, or harmonics thereof. Peaks may be adjusted based on a ratio that considers removed signals. A metric of patient status is then determined from the peaks or corresponding frequencies. The patient status may be related to blood volume of the patient and may be used to control pump operation.
