Patent ID: 11864909
Assignee: BBI MEDICAL INNOVATIONS, LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 15:
16. An apparatus for assessing perfusion of blood in tissue below a patient's skin, comprising:
an emitter configured to emit light at a first wavelength and a second wavelength when activated,
a first receiver configured to measure a first intensity of received light at the first wavelength and a second intensity of received light at the second wavelength and provide a first signal comprising information about the first and second intensities of the received light,
a substrate coupled to the emitter and the first receiver and configured such that the emitter and first receiver can be placed in simultaneous contact with the patient's skin, and
a processor coupled to the first receiver and configured to:
receive the first signal,
determine a first summation value of the first and second intensities of the received light, and
determine a level of perfusion of the tissue from the first summation value,
wherein:
the processor is coupled to the emitter,
the emitter is configured to emit light upon receipt of a strobe pulse,
the processor is configured to provide the strobe pulse to the emitter and to the first receiver,

the first receiver is further configured to measure a first time period between receipt of the strobe pulse and receipt of light from the emitter, and
the first signal comprises information about the first time period.