Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1995-06-07
1997-10-07
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
A61N 139
Patent
active
056742487
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.
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Brumwell Dennis A.
Donohoo Ann M.
Kroll Mark W.
Angeion Corporation
Evanisko George R.
Kamm William E.
Pedersen Brad D.
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