05016808 is referenced by 157 patents and cites 5 patents.

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.

Title
Implantable tapered spiral endocardial lead for use in internal defibrillation
Application Number
407052
Publication Number
5016808
Application Date
January 8, 1990
Publication Date
May 21, 1991
Inventor
Robert C Owens
Forest Lake
MN, US
Ronald W Heil Jr
Roseville
MN, US
Agent
Haugen and Nikolai
Assignee
Cardiac Pacemakers
MN, US
IPC
A61N 1/00
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