Staged energy concentration for an implantable biomedical device

Details Staged energy concentration for an implantable biomedical device Staged energy concentration for an implantable biomedical device

1996-11-12

1998-11-17

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 139

Patent

active

058369732

ABSTRACT:
A staged energy storage system provides electrical energy to an implantable biomedical device by using the combination of a first stage energy source and a second stage energy concentration system. The second stage energy concentration system allows a lower density and/or lower voltage energy source to be used as the first stage energy source, thereby decreasing the battery cost, size and weight. In one embodiment, the second stage energy concentration system comprises a rechargeable battery. In another embodiment, the second stage energy capacitor system comprises a high energy density capacitor system. The staged energy storage system is ideal for internally charging a pulse-generating capacitor system within an implantable cardioverter defibrillator. In this embodiment, a high voltage transformer has a secondary side that is electrically connected to the pulse-generating capacitor system. A second stage concentration system is electrically connected between a first stage energy source and a primary side of the high voltage transformer to store at least a portion of an electrical charge that is delivered from the first stage energy source and to the high voltage transformer.

REFERENCES:
patent: 5407444 (1995-04-01), Kroll

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