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Sensor having cutaneous conformance

DC
  • US 4,830,014 A
  • Filed: 07/07/1987
  • Issued: 05/16/1989
  • Est. Priority Date: 05/11/1983
  • Status: Expired due to Term
First Claim
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1. A non-invasive, electrooptical sensor probe for removable adhesive attachment to a convex portion of the skin of a patient for use in measuring light extinction during transillumination of the blood-perfused tissue beneath said skin comprising:

  • a flexible, initially substantially planar, web-like support structure having substantially parallel, spaced, oppositely facing upper and lower surfaces;

    a light source mounted in the web of said support structure, said light source having a light-emitting surface facing in the same direction as said lower surface;

    a photo-sensor mounted in the web of said support structure, said photo-sensor having a light-responsive surface facing in the same direction as said lower surface, said photo-sensor being spaced from said light source in the plane of said support structure; and

    an adhesive layer on said lower surface for removably adhesively securing said lower surface to said convex portion of said skin so that said lower surface is held in conformance with said skin, said support structure being flexible also to conform to said skin without stressing either of said skin and the underlying tissue at any time during operation of said sensor probe, the convexity of said skin portion between the locations of said light source and said photo-sensor causing said light-emitting and light-responsive surfaces to be inclined toward one another so that light from said light source transilluminates the tissue between said light source and said photo-sensor and said light-responsive surface receives at least a part of said light.

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