Patent ID: 6088607
Filing Date: 2000-07-11
Classification: A61B,H05K,Y10T

Abstract:
An oximeter sensor for measuring electromagnetic energy which has been attenuated by a living flesh material, said sensor comprising:a light source;a base having a thickness, said base being positioned adjacent said flesh material when said optical probe is positioned for use;an aperture in said base, said aperture forming an entrance to a chamber which extends into said base, said aperture and chamber having a width of at least 3 mm and, said chamber having a particular depth such that the flesh material which penetrates into the chamber via said aperture is not substantially compressed with change in pressure between said flesh material and a surface defining said aperture typically expected from a patient; anda detector located within said chamber such that when said oximeter sensor is in use, said detector and light source are generally in axial alignment for transmission, said detector separated from any of said portion of flesh material which has penetrated into said chamber, said detector receiving electromagnetic energy transmitted by said light source and through said flesh material, said detector operative to generate a signal in response to said electromagnetic radiation, said width of said aperture being sized to reduce motion artifacts in said signal due to motion typically expected for a living patient.