Calibration for multi-stage physiological monitors

摘要

A physiological monitor is provided for determining a physiological parameter of a medical patient with a multi-stage sensor assembly. The monitor includes a signal processor configured to receive a signal indicative of a physiological parameter of a medical patient from a multi-stage sensor assembly. The multi-stage sensor assembly is configured to be attached to the physiological monitor and the medical patient. The monitor of certain embodiments also includes an information element query module configured to obtain calibration information from an information element provided in a plurality of stages of the multi-stage sensor assembly. In some embodiments, the signal processor is configured to determine the physiological parameter of the medical patient based upon said signal and said calibration information.

主权项

1. An acoustic physiological monitor for determining an acoustic physiological parameter of a medical patient with a multi-stage sensor assembly, the acoustic physiological monitor comprising:
a signal processor configured to receive a signal indicative of an acoustic physiological parameter of a medical patient from a multi-stage sensor assembly configured to be attached to the acoustic physiological monitor and the medical patient, the multi-stage sensor assembly including a plurality of stages, the plurality of stages including a first stage and a second stage; and an information element query module configured to obtain calibration information from one or more information elements provided in each of the plurality of stages of the multi-stage sensor assembly, the calibration information including at least a first characteristic associated with a cable forming at least a part of the first stage and a process variable characteristic associated with an acoustic sensor forming at least a part of the second stage, wherein the signal processor is further configured to:
in response to detecting attachment of the cable to the acoustic physiological monitor, adjust one or more signal processing parameters of the signal processor based on the first characteristic associated with the cable;in response to detecting attachment of the acoustic sensor to the cable, further adjust the one or more signal processing parameters of the signal processor based on the process variable characteristic associated with the acoustic sensor;based on the adjusted one or more signal processing parameters, generate a modified version of the signal representative of physiological sounds detected by the acoustic sensor; anddetermine the acoustic physiological parameter of the medical patient based upon the modified version of the signal.