US 12,257,428 B2
Systems and methods for wireless energy transfer for ventricular assist devices
John Freddy Hansen, Pleasanton, CA (US); and Eric Lee, Oakland, CA (US)
Assigned to TC1 LLC, St. Paul, MN (US)
Filed by TC1 LLC, St. Paul, MN (US)
Filed on Mar. 10, 2021, as Appl. No. 17/197,518.
Claims priority of provisional application 62/987,468, filed on Mar. 10, 2020.
Prior Publication US 2021/0283391 A1, Sep. 16, 2021
Int. Cl. A61M 60/873 (2021.01); A61M 60/178 (2021.01); A61M 60/876 (2021.01); H02J 50/12 (2016.01); H02J 50/90 (2016.01)
CPC A61M 60/873 (2021.01) [A61M 60/178 (2021.01); A61M 60/876 (2021.01); H02J 50/12 (2016.02); A61M 2205/04 (2013.01); H02J 50/90 (2016.02)] 17 Claims
OG exemplary drawing
 
1. A wireless power transfer system, comprising:
a ventricular assist device (VAD) implantable in a subject and comprising a pump that includes a ventricular cuff;
an external transmit resonator configured to transmit wireless power, wherein the external transmit resonator comprises one or more loops of Litz wire; 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 the VAD using the received wireless power, wherein the implantable receive resonator comprises a plurality of stacked plates, wherein the implantable receive resonator is positioned proximate the pump of the VAD such that the ventricular cuff of the pump extends through an aperture defined by the plurality of stacked plates, and wherein the implantable receive resonator is in thermal contact with the pump to dissipate heat through the pump.