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

Claim 17:
18. A physiological monitor comprising:
an acoustic sensor;, an input 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 a 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 signal, and wherein the transfer function of the acoustic sensor corresponds to a high-pass filter; and
one or more hardware processors in communication with the input and configured to:
retrieve, from a memory the transfer function of the acoustic sensor;
deconvolve the acoustic signal to lessen an effect of the transfer function on the acoustic signal; generate a deconvolved acoustic signal, wherein to process the acoustic signal, the one or more hardware processors are configured to scale a frequency domain equivalent of the acoustic signal, and
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.