Patent ID: 11963799
Assignee: ITAMAR MEDICAL SPRY 2021, LIMITED PARTNERSHIP
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
1. A wearable non-invasive blood pressure measurement system with motion artifact removal, comprising:
a wearable medical device comprising
an accelerometer configured to generate accelerometer signals indicative of motion,
an energy receiver configured to receive light reflected from tissue of a patient, and
a processor operatively coupled to the energy receiver and configured to generate one or more noise-corrupted optical signals associated with arterial blood pressure of the patient based on the received light, and

a blood pressure calculation system in communication with the wearable medical device, wherein the blood pressure calculation system comprises
a filtering system comprising an adaptive filter configured to apply the accelerometer signals indicative of motion as a noise reference, and

wherein the blood pressure calculation system is configured to
receive the one or more noise-corrupted optical signals,
filter, using the filtering system, the one or more noise-corrupted optical signals based on the adaptive filter, to provide non-corrupted optical signals,
select a subset of waves of the non-corrupted optical signals over a predetermined amount of time,
obtain feature vectors from the subset of waves associated with the arterial blood pressure of the patient, and
input the obtained feature vectors into an empirical blood pressure calculation model to calculate one or more arterial blood pressure values.