Systems and methods for wireless energy transfer for ventricular assist devices

Patent metadata

Field	Value
Publication number	US-2021283391-A1
Application number	US-202117197518-A
Country	US
Kind code	A1
Filing date	Mar 10, 2021
Priority date	Mar 10, 2020
Publication date	Sep 16, 2021
Grant date	—

Abstract

A wireless power transfer system is provided. The system includes an external transmit resonator and an implantable receive resonator. The transmit resonator is configured to transmit wireless power, wherein the external transmit resonator includes one of i) one or more loops of Litz wire and ii) a plurality of stacked plates. The implantable receive resonator is configured to receive the transmitted wireless power from the external transmit resonator, wherein the implantable receive resonator is configured to power a ventricular assist device (VAD) implanted in a subject using the received wireless power. The implantable receive resonator includes the other of i) the one or more loops of Litz wire and ii) the plurality of stacked plates.

First claim

1 . A wireless power transfer system, comprising:
an external transmit resonator configured to transmit wireless power, wherein the external transmit resonator comprises one of i) one or more loops of Litz wire and ii) a plurality of stacked plates; and an implantable receive resonator configured to receive the transmitted wireless power from the external transmit resonator, wherein the implantable receive resonator is configured to power a ventricular assist device (VAD) implanted in a subject using the received wireless power, and wherein the implantable receive resonator comprises the other of i) the one or more loops of Litz wire and ii) the plurality of stacked plates.

2 . The wireless power transfer system of claim 1 , wherein the external transmit resonator comprises the one or more loops of Litz wire, and wherein the one or more loops of Litz wire are configured to wrap around an upper body of the subject.

3 . The wireless power transfer system of claim 2 , wherein the external transmit resonator is configured to diagonally wrap around an upper body of the subject from a shoulder of the subject to a hip of the subject.

4 . The wireless power transfer system of claim 1 , further comprising a hub formed integrally with the external transmit resonator, wherein the hub comprises a power converter configured convert a first power provided by a power source to a second power received by the external transmit resonator.

5 . The wireless power transfer system of claim 1 , wherein the implantable receive resonator is configured to be implanted in a thoracic cavity of a subject.

6 . The wireless power transfer system of claim 5 , wherein the implantable receive resonator is positioned proximate a pump of the VAD.

7 . The wireless power transfer system of claim 5 , wherein the implantable receive resonator is configured to be implanted below a lung of the subject and above a diaphragm of the subject.

8 . The wireless power transfer system of claim 1 , further comprising an implantable battery module electrically connected to the VAD.

9 . The wireless power transfer system of claim 8 , wherein the implantable battery module is electrically connected between the implantable receive resonator and the VAD, and wherein the implantable receive resonator is configured to power the VAD by charging the implantable battery.

10 . The wireless power transfer system of claim 8 , wherein the implantable receive resonator is electrically connected directly to the VAD.

11 - 20 . (canceled)

21 . A method of transmitting wireless power, comprising:
transmitting wireless power from an external transmit resonator to an implantable receive resonator, wherein the external transmit resonator includes one of i) one or more loops of Litz wire and ii) a plurality of stacked plates; receiving the wireless power at the implantable receive resonator, wherein the implantable receive resonator includes the other of i) the one or more loops of Litz wire and ii) the plurality of stacked plates; and powering a ventricular assist device (VAD) using the received wireless power.

22 . The method of claim 21 , wherein transmitting wireless power further comprises transmitting wireless power from an external transmit resonator configured to wrap around an upper body of a subject.

23 . The method of claim 22 , wherein transmitting wireless power further comprises transmitting wireless power from an external transmit resonator configured to wrap diagonally around an upper body of the subject from a shoulder of the subject to a hip of the subject.

24 . The method of claim 21 , wherein receiving the wireless power further comprises receiving the wireless power at an implantable receive resonator implanted in a thoracic cavity of a subject.

25 . The method of claim 21 , wherein receiving the wireless power further comprises receiving the wireless power at an implantable receive resonator positioned proximate a pump of the VAD.

26 . The method of claim 21 , wherein receiving the wireless power further comprises receiving the wireless power at an implantable receive resonator implanted below a lung of a subject and above a diaphragm of the subject.

27 . The method of claim 21 , further comprising electrically connecting an implantable battery module to the VAD.

28 . The method of claim 27 , further comprising electrically connecting the implantable battery module between the implantable receive resonator and the VAD.

29 . The method of claim 27 , further comprising electrically connecting the implantable receive resonator directly to the VAD.

30 - 38 . (canceled)

Assignees

• Tc1 Llc

Inventors

• Hansen John Freddy
• Lee Eric

Classifications

• H02J2105/46

  Medical devices, medical implants or life supporting devices · CPC title

• A61M60/178 Primary

  drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices · CPC title

• A61M2205/04

  implanted · CPC title

• A61M2205/3613

  by body heat · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title