Patent ID: 11872355
Assignee: COVIDIEN LP
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 22:
23. A device comprising:
an elongated body defining a lumen, the elongated body comprising a proximal portion and a distal portion;
one or more sensors configured to:
stimulate a fluorescence response from one or more fluorescent probes released into a fluid and flowing with the fluid through the lumen; and
detect the fluorescence response, wherein the fluorescence response is indicative of a composition of the fluid; and

a computing device configured to determine:
at least one of an amount of oxygen or a concentration of oxygen in the fluid within the lumen based on the fluorescence response; and
a flow rate of the fluid within the lumen based on:
a duration of the detected fluorescence response of at least two discrete boluses of fluorescent microbeads; and
a time delay between detection of the detected fluorescence response of the at least two discrete boluses of fluorescent microbeads.