Metal fusion bonding – Process – Combined
Patent
1990-01-08
1991-05-21
Ramsey, Kenneth J.
Metal fusion bonding
Process
Combined
264173, 128785, A61N 100
Patent
active
050168088
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 ventricle 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: 3760812 (1973-09-01), Timm et al.
patent: 4551292 (1985-11-01), Fletcher et al.
patent: 4573481 (1986-03-01), Bullara
patent: 4764324 (1988-08-01), Burnham
patent: 4860769 (1989-08-01), Fogarty et al.
Heil, Jr. Ronald W.
Owens Robert C.
Cardiac Pacemakers Inc.
Ramsey Kenneth J.
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