Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1996-07-31
1998-03-17
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
361313, A61N 139
Patent
active
057281386
ABSTRACT:
A cardiac defibrillator includes a multilayer capacitor with a plurality of conductive electrodes and interspersed dielectric layers, each dielectric layer composed of constituents which cause it to exhibit an antiferroelectric phase. The constituents of each dielectric layer are such as to cause each layer to exhibit plural ferroelectric phases. The defibrillator includes a charging circuit for applying to the capacitor an electric field across each dielectric layer which causes a transition thereof through the plural ferroelectric phases. PLZT is the preferred dielectric material, at constituent values which cause the material to lie within the antiferroelectric phase and to exhibit plural ferroelectric phases.
REFERENCES:
patent: 5163427 (1992-11-01), Keimel
Dougherty Joseph P.
Gachigi Kamau Wa
Jang Sei-Joo
Pruna Philip M.
Randall Clive A.
Kamm William E.
Monahan Thomas J.
Schaetzle Kennedy J.
The Penn State Research Foundation
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