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Medical sensor for reducing motion artifacts and technique for using the same

  • US 8,260,391 B2
  • Filed: 07/14/2010
  • Issued: 09/04/2012
  • Est. Priority Date: 09/12/2005
  • Status: Active Grant
First Claim
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1. A sensor comprising:

  • a bandage-type sensor body;

    an emitter and a detector disposed on the sensor body and adapted to be positioned proximate to a tissue of a patient; and

    a motion damping structure disposed on an exterior surface of the sensor body, such that the motion damping structure is visible and faces away from the tissue when the sensor is applied to the patient, wherein the motion damping structure is capable of damping a force experienced by the sensor body, such that the motion damping structure moves at least partially independently of the emitter and the detector when an external force is applied to the motion damping structure and wherein the motion damping structure comprises a chamber, the chamber comprising a fluid layer and a retaining layer, such that the fluid layer is between the retaining layer and the sensor body and comprises a viscoelastic material.

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