Silicon insulated extendable/retractable screw-in pacing lead with high efficiency torque transfer

An implantable electrode type lead assembly of the flexible type which is particularly adapted for implantation in the cardiac tissue for applications such as use with a pacemaker. The lead assembly has an electrode head which includes a fixation spiral for implantation into tissue. The spiral or ro...

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Bibliographische Detailangaben
Hauptverfasser:	MORRIS, MARY M, DI DOMENICO, EDWARD, STEWART, MARK T, KEENEY, KENNETH W, HESS, DOUGLAS R
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ELECTROTHERAPY HUMAN NECESSITIES HYGIENE MAGNETOTHERAPY MEDICAL OR VETERINARY SCIENCE PERFORMING OPERATIONS RADIATION THERAPY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING ULTRASOUND THERAPY WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	An implantable electrode type lead assembly of the flexible type which is particularly adapted for implantation in the cardiac tissue for applications such as use with a pacemaker. The lead assembly has an electrode head which includes a fixation spiral for implantation into tissue. The spiral or rotation action of the electrode head is controlled by means of an elongated torsionally wound electrical coil conductor, the coil extending through the lead from the proximal to the distal end thereof and carried within a silicone tube which is co-extensive therewith, the tube having been especially treated to modify the slip characteristics of the internal diameter (ID) thereof for high efficiency torque transfer.