Patent ID: 11872038
Assignee: COVIDIEN LP
Field: Measurement (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
1. A method comprising:
controlling an excitation light source to emit excitation light toward a first diffuse reflector, wherein the first diffuse reflector is configured to diffuse the emitted excitation light to expose a fluorescent material to the emitted excitation light, wherein the fluorescent material is disposed within a lumen defined by an elongated body comprising a proximal portion and a distal portion, and wherein the fluorescent material is configured to fluoresce light toward a second diffuse reflector when exposed to the emitted excitation light;
detecting, with a fluorescent light detector, an amount of fluoresced light from the second diffuse reflector, wherein the second diffuse reflector is configured to diffuse the fluoresced light to expose the fluorescent light detector to the fluoresced light; and
determining, based on the amount of the detected fluoresced light, at least one of an amount of oxygen or a concentration of oxygen in the fluid within the lumen.