Patent ID: 7937128

Claim:
A pulse oximetry sensor comprising: a plurality of emitters configured to transmit light having a plurality of wavelengths into a fleshy medium, said emitters are selected from a plurality of matched emitters having a first wavelength intensity over a second wavelength intensity ratio for at least one predetermined DC drive current; at least one detector responsive to said light after absorption by constituents of pulsatile blood flowing within said medium so as to generate a plurality of intensity signals; a sensor head having a light absorbing surface adapted to be disposed proximate said medium, said head including a face head tape and a base head tape, said emitters and said at least one detector disposed between said face head tape and said base head tape of said sensor head; and a detector window defined by said sensor head, said window configured so as to provide a predetermined limit to the field-of-view of said at least one detector during use.