Transcutaneous energy transfer systems

Patent metadata

Field	Value
Publication number	US-2019076587-A1
Application number	US-201816190471-A
Country	US
Kind code	A1
Filing date	Nov 14, 2018
Priority date	Apr 15, 2014
Publication date	Mar 14, 2019
Grant date	—

Abstract

The present disclosure relates to an improved transcutaneous energy transfer (TET) system that generates and wirelessly transmits a sufficient amount of energy to power one or more implanted devices, including a heart pump, while maintaining the system's efficiency, safety, and overall convenience of use. The disclosure further relates one or more methods of operation for the improved system.

First claim

1 . An implantable blood pump system comprising:
an implantable coil housing; a resonant circuit including a secondary coil and one or more capacitors coupled to the secondary coil, the resonant circuit being disposed entirely within the coil housing and having a pair of load terminals; an implantable rectifier housing separate from the coil housing; an internal controller circuit including a rectifier and a drive circuit electrically connected to the rectifier, the rectifier being disposed within the rectifier housing; a first cable extending between the coil housing and the rectifier housing, the first cable having conductors electrically connected between the pair of load terminals of the resonant circuit and the rectifier, whereby only load current passing from the resonant circuit to the rectifier passes along the conductors of the first cable; and a pump electrically connected to the drive circuit.

2 . An implantable blood pump system as claimed in claim 1 , wherein the drive circuit is also disposed within the rectifier housing.

3 . An implantable blood pump system as claimed in claim 1 , wherein the one or more capacitors are arranged in a circular configuration generally axially from the secondary coil.

4 . An implantable blood pump system as claimed in claim 1 , and further comprising:
an implantable controller housing separate from the implantable blood pump; and an internal controller circuit disposed within the implantable controller housing and electrically connected to the implantable coil via a first electrical cable and to the blood pump via a second electrical cable.

5 . A transcutaneous energy transfer system for supplying power to an implantable blood pump implanted within a body of an animal, comprising:
an implantable blood pump system including:
an implantable coil housing;
a resonant circuit including a secondary coil and one or more capacitors coupled to the secondary coil, the resonant circuit being disposed entirely within the coil housing and having a pair of load terminals;
an implantable rectifier housing separate from the coil housing;
an internal controller circuit including a rectifier and a drive circuit electrically connected to the rectifier, the rectifier being disposed within the rectifier housing;
a first cable extending between the coil housing and the rectifier housing, the first cable having conductors electrically connected between the pair of load terminals of the resonant circuit and the rectifier, whereby only load current passing from the resonant circuit to the rectifier passes along the conductors of the first cable; and
a pump electrically connected to the drive circuit; and
an external coil adapted for mounting to the body of the animal opposite the implantable coil housing.

Assignees

• Heartware Inc

Inventors

• Rudser John
• Larose Jeffrey A
• Gomez Ramiro

Classifications

• A61M2205/8243

  by induction · CPC title

• H02J50/70

  involving the reduction of electric, magnetic or electromagnetic leakage fields · CPC title

• A61N1/3787 Primary

  from an external energy source · CPC title

• H02J50/10

  using inductive coupling · CPC title

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title