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Acoustic respiratory monitoring sensor having multiple sensing elements

  • US 8,702,627 B2
  • Filed: 10/14/2010
  • Issued: 04/22/2014
  • Est. Priority Date: 10/15/2009
  • Status: Active Grant
First Claim
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1. An acoustic sensor for non-invasively outputting signals responsive to acoustic vibrations indicative of one or more physiological parameters of a medical patient, comprising:

  • a sensor support;

    a first acoustic sensing element at least partially supported by the sensor support and comprising an inner portion and an outer portion, the inner portion comprising a coating disposed on an inner surface of the first acoustic sensing element, the outer portion comprising a coating disposed on an outer surface of the first acoustic sensing element; and

    a second acoustic sensing element at least partially supported by the sensor support, positioned between the sensor support and the first acoustic sensing element, and comprising an inner portion and an outer portion, the inner portion comprising a coating disposed on an inner surface of the second acoustic sensing element, the outer portion comprising a coating disposed on an outer surface of the second acoustic sensing element,wherein the inner portions are positioned between the outer portions,wherein at least the first acoustic sensing element wraps around at least a portion of the sensor support, the outer portions forming an electrical shielding barrier around the inner portions.

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