IMPLANTABLE RFID TAG

• US 20150129664A1
• Filed: 10/17/2014
• Published: 05/14/2015
• Est. Priority Date: 11/08/2013
• Status: Active Grant

• Current Assignee: Gurbinder S. Brar
• Original Assignee: Gurbinder S. Brar
• Inventors: Brar, Gurbinder S.
• Granted Patent: US 9,396,428 B2
• Time in Patent Office: Days
• US Class Current: 235/492
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07758 arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag
• CPC Class Codes: Y10T 29/49018 with other electrical component
• CPC Class Codes: Y10T 29/4902 Electromagnet, transformer or inductor

Abstract

Disclosed herein are systems and methods for an implantable device comprising a ferromagnetic mass at least partially disposed near a coil, said coil formed of electrically conducting material and having electrical leads, a resonator circuit coupled to the leads and operable to resonate on application of energy from said leads. Some embodiments include an antenna coupled to said resonator circuit, wherein when either the ferromagnetic mass or the coil moves, power is supplied to the resonator circuit. In certain embodiments the device further includes a modulator coupled to said resonator circuit and operable to modulate the output of the resonator circuit where either the ferromagnetic mass or the coil is disposed in an animal such as a human. some embodiments allow for disposing multiple devices in an animal for characterizing different animal motions.

Claims

1. A device comprising:

a housing, said housing comprising a substantially biocompatible material, said housing having an interior cavity;

a magnetic generator disposed in said interior cavity;

a resonator circuit coupled to said magnetic generator, said resonator operable to resonate on application of energy from said magnetic generator, and

an antenna coupled to said resonator circuit.

2. The device of claim 1 wherein the magnetic generator includes a ferromagnetic mass and a coil, said mass and coil disposed to induce a voltage in the coil when either the mass or the coil is moved.

3. The device of claim 1 wherein the housing includes one or more of teflon, titanium or polyether ether ketone.

4. The device of claim 1 further including solid-state modulator, said modulator coupled to the resonator.

5. A device comprising:

a ferromagnetic mass at least partially disposed in a coil, said coil formed of electrically conducting material;

a resonator circuit coupled to said coil and operable to resonate on application of energy from said coil;

an antenna coupled to said resonator circuit,

wherein when the ferromagnetic mass and coil move in relation to each other, power is supplied to the resonator circuit.

6. The device of claim 5 further including:

a modulator coupled to said resonator circuit and operable to modulate the output of the resonator circuit.

7. The device of claim 5 where either the ferromagnetic mass or the coil is disposed on a portion of an animal.

8. The device of claim 7 wherein the animal is a human.

9. The device of claim 5 further including:

a housing, said housing formed of substantially biocompatible material, and said housing encapsulating at least one of the ferromagnetic mass, coil, resonator circuit or antenna.

10. A method comprising:

disposing a spring-loaded ferromagnetic mass in a biocompatible housing;

disposing an inductive loop proximate to the ferromagnetic mass;

coupling the inductive loop to a resonator,

wherein motion of the ferromagnetic mass induces power into the resonator.

11. The method of claim 10 further including:

coupling the resonator to an antenna.

12. The method of claim 10 further including:

coupling a modulator to the resonator.

13. The method of claim 12 wherein the modulator is solid-state.

14. The method of claim 10 further including:

disposing a portion of the housing in an animal.

15. The device of claim 14 wherein the animal is a human.

16. The method device of claim 10 wherein the housing includes one or more of Teflon, titanium or polyether ether ketone.