Patent ID: 11963749
Assignee: MASIMO CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A physiological monitoring system configured to non-invasively detect acoustic vibrations indicative of one or more physiological parameters of a medical patient, the physiological monitoring system comprising:
an acoustic sensor;
a memory;
one or more hardware processors configured to:
receive an acoustic signal from the acoustic sensor, the acoustic sensor configured to attach to the medical patient, detect acoustic vibrations associated with the medical patient, and generate the acoustic signal indicative of the acoustic vibrations, wherein the acoustic sensor is associated with a transfer function that affects the acoustic signal generated by the acoustic sensor, and wherein the transfer function of the acoustic sensor corresponds to a high-pass filter;
retrieve, from the memory, the transfer function of the acoustic sensor;
deconvolve the acoustic signal to lessen an effect of the transfer function on the acoustic signal; and
generate a deconvolved acoustic signal, wherein the deconvolved acoustic signal corresponds to a scaled frequency domain equivalent of the acoustic signal;
estimate a physiological parameter of the medical patient based at least on the deconvolved acoustic signal, wherein the physiological parameter includes one or more respiratory or cardiac parameters; and
cause a display to display an indication of the physiological parameter.