Patent ID: 11864923
Assignee: JMAD CREATIONS, LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A method for determining blood oxygen saturation in a subject and for reducing melanin bias, the method comprising:
emitting a plurality of light beams from a plurality of light sources of a pulse oximeter to a tissue of a subject;
wherein a first light source of the plurality of pulse oximeter light sources is configured to emit light at a first wavelength and a second light source of the plurality of pulse oximeter light sources is configured to emit light at a second wavelength different from the first wavelength,
wherein the first wavelength and the second wavelength are selected to reduce the melanin bias,
wherein the emitted light beam from at least one of the plurality of light sources comprises light with a wavelength below an isosbestic point of oxyhemoglobin and deoxyhemoglobin, and
wherein the emitted light beam from at least one of the other plurality of light sources comprises light with a wavelength above the isosbestic point of oxyhemoglobin and deoxyhemoglobin;

receiving, with a light detector of the pulse oximeter, the plurality of emitted light beams wherein the received emitted light beams are transmitted through or reflected from the tissue of the subject;
converting, with a converter of the pulse oximeter, the received emitted light beams to a voltage or a current signal corresponding to a received light intensity of each of the respective emitted light beams; and
transmitting each voltage signal or each current signal to one or more processors; and
determining, with the one or more processors, blood oxygen saturation information of the subject based on the converted voltage signal or current signal associated with the first light source and the converted voltage signal or current signal associated with the second light source.