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

Claim 13:
14. A method for determining one or more physiological parameters of a medical patient, the method comprising:
receiving an acoustic signal from an acoustic sensor attached to the medical patient, the acoustic sensor configured to 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;
retrieving, from a memory, the transfer function of the acoustic sensor;
deconvolving the acoustic signal to lessen an effect of the transfer function on the acoustic signal;
generate a deconvolved acoustic signal, wherein the deconvolved acoustic signal comprises a scaled frequency domain equivalent of the acoustic signal; and
estimating 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
causing a display to display an indication of the physiological parameter.