公开(公告)号：US20200305777A1

公开(公告)日：2020-10-01

申请号：US16804507

申请日：2020-02-28

Applicant: Masimo Corporation

Inventor： Massi Joe E. Kiani ,  Mathew Paul ,  Jesse Chen ,  Marcelo M. Lamego

IPC: A61B5/1455 ,  A61B5/00

Abstract: An active-pulse blood analysis system has an optical sensor that illuminates a tissue site with multiple wavelengths of optical radiation and outputs sensor signals responsive to the optical radiation after attenuation by pulsatile blood flow within the tissue site. A monitor communicates with the sensor signals and is responsive to arterial pulses within a first bandwidth and active pulses within a second bandwidth so as to generate arterial pulse ratios and active pulse ratios according to the wavelengths. An arterial calibration curve relates the arterial pulse ratios to a first arterial oxygen saturation value and an active pulse calibration curve relates the active pulse ratios to a second arterial oxygen saturation value. Decision logic outputs one of the first and second arterial oxygen saturation values based upon perfusion and signal quality.