Surgery – Truss – Pad
Patent
1991-10-18
1992-07-28
Kamm, William E.
Surgery
Truss
Pad
128784, A61N 105
Patent
active
051333651
ABSTRACT:
An improved electrocardial lead for use with an automatic implantable cardioverter/defibrillator (AICD) comprises an elongated, flexible, plastic tubular catheter body which is preformed so that when unconstrained, it assumes the shape of a tapered spiral or helix. The catheter body supports a defibrillating electrode attached to the exterior wall of the catheter body and is connected by a suitable cable to a proximal connector for mating with the AICD pulse generator. The improved lead also includes a tip electrode for sensing cardiac activity and providing information to the AICD pulse generator for controlling its operation. The lead of the present invention is intended for endocardial emplacement with the electrode structures predominantly in the right ventrical and provides substantially increased electrode surface area in contact with heart tissue as compared to prior art endocardial defibrillating leads and, thus, maximizing the energy delivered to the heart during defibrillation.
REFERENCES:
patent: 4603705 (1986-08-01), Speicher et al.
patent: 4662377 (1987-05-01), Heilman et al.
patent: 4860769 (1989-08-01), Fogarty et al.
patent: 4922927 (1990-05-01), Fine et al.
Heil, Jr. Ronald W.
Owens Robert C.
Cardiac Pacemakers Inc.
Getzow Scott M.
Kamm William E.
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