Patent ID: 11903683
Assignee: CHELAK MEDICAL SOLUTIONS INC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 12:
13. An implantable system for implanting in a subject for determining hemodynamic stability of the subject, comprising:
a set of optical fibers configured for placement in a heart of the subject, wherein at least one optical fiber in the set comprises at least one fiber Bragg grating (FBG) and is configured to bend with contraction and relaxation of the heart;
at least one optical source configured to introduce an optical signal into the at least one optical fiber;
at least one receiver configured to:
receive a reflected portion of the optical signal via the at least one FBG of the at least one optical fiber, wherein a change in at least one parameter of the received reflected portion of the optical signal is indicative of an amount of bending of the at least one optical fiber due to contraction and relaxation of the heart, wherein the at least one parameter change includes a Bragg wavelength shift; and
receive at least one of a thermal signal, an ultrasound signal, or an impedance signal; and

at least one processor configured to determine the hemodynamic stability of the subject based on the Bragg wavelength shift and on a change in the at least one of the thermal signal, the ultrasound signal, or the impedance signal.