Reflecting-type oxymeter probe

Claim 1

A probe for a reflection-type oxymeter which measures a blood oxygen saturation of a subject, the probe comprising: light emit means for emitting at least two lights having different wavelengths toward a body portion of said subject; light detect means for detecting the lights emitted from said light emit means and reflected by said body portion of said subject; a housing supporting said light emit means and said light detect means; and an elastic member secured to said housing, said elastic member including a generally annular portion and being engaged at an inner peripheral edge of said annular portion with an outer surface of said housing, said annular portion including an outer peripheral adhesive portion, said adhesive portion being spaced from said body portion of said subject when said housing is in contact with said body portion, said adhesive portion being elastically deformable and thereby adherable to said body portion so that said housing is pressed against said body portion with a pressing force within a predetermined range due to an elastic return force of the deformed adhesive portion adhered to said body portion, said annular portion having a thickness which decreases in a direction from said inner peripheral edge thereof toward said outer peripheral adhesive portion thereof.