Patent ID: 11950854
Assignee: GEORGIA TECH RESEARCH CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 27:
28. A catheter retrofit device for active magnetic resonance imaging (MRI) device location visualization, the retrofit device comprising:
a mounting tube configured to accept a catheter and to a least partially conform to a shape of the catheter;
an optical fiber including a distal end in communication with a portion of the mounting tube; and
an acousto-optical sensor region disposed at the distal end of the optical fiber and comprising a first fiber Bragg grating (FBG) and a second FBG;
wherein the acousto-optical sensor region includes an electro-mechanical conversion assembly comprising:
a first antenna and a second antenna, each disposed on the mounting tube and configured to receive radio-frequency (RF) electromagnetic energy and produce a corresponding electrical signal;
a first piezoelectric transducer in mechanical communication with the first FBG and in electrical communication with the first antenna; and
a second piezoelectric transducer in mechanical communication with the second FBG and in electrical communication with the second antenna;
wherein the first and second piezoelectric transducers are configured to modulate elastic properties of the acousto-optical sensor region with acoustic waves generated responsive to the electrical signal received from the first and second antennae.