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Opticoustic sensor

  • US 9,326,712 B1
  • Filed: 06/02/2011
  • Issued: 05/03/2016
  • Est. Priority Date: 06/02/2010
  • Status: Active Grant
First Claim
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1. A physiological sensor comprising:

  • an optic assembly having an optic transducer;

    an acoustic assembly having an acoustic transducer, a piezoelectric subassembly having a piezoelectric membrane that moves on a frame in response to acoustic vibrations, and an acoustic coupler generally enveloping the piezoelectric subassembly;

    an attachment assembly having a bottom side having an adhesive for skin attachment, a top side, and a flexible body including a center and wings and supporting the acoustic assembly on the center of the flexible body and the optic assembly on at least one of the wings of the flexible body, the flexible body configured to be affixed to a tissue site;

    the acoustic assembly having a button that mechanically couples the acoustic coupler generally centered on the attachment assembly so that the acoustic assembly extends from the attachment assembly bottom side;

    the optic assembly configured to transmit a plurality of wavelengths of light into the tissue site and detect the light after attenuation by pulsatile blood flow within the tissue site, the detected light usable to generate an optic signal;

    the acoustic transducer configured to respond to vibrations at the surface of the tissue site, the vibrations usable to generate an acoustic signal; and

    a sensor cable that transmits the optic signal and the acoustic signal, the sensor cable connectable to a monitor for use in calculating a plurality of physiological parameters.

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