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

Claim 26:
27. 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;
a radial mode resonator; and
an acousto-optical sensor region disposed at the distal end of the optical fiber, the acousto-optical sensor region including an electro-mechanical conversion assembly comprising:
one or more antennae disposed on the mounting tube and configured to receive radio-frequency (RF) electromagnetic energy and produce a corresponding electrical signal; and
an ultrasonic transducer in mechanical communication with the acousto-optical sensor region, and in electrical communication with one or more of the antennae, the ultrasonic transducer configured to modulate elastic properties of the acousto-optical sensor region with acoustic waves generated responsive to the electrical signal received from one or more of the antennae;

wherein the radial mode resonator is in communication with the acousto -optical sensor region of the optical fiber; and
wherein at least a thickness dimension of the radial mode resonator is configured to produce one or more resonance frequencies corresponding with one or more Larmor frequencies.