Cardiac pacemaker lead

Details Cardiac pacemaker lead Cardiac pacemaker lead

1991-11-15

1993-11-16

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical energy applicator

607120, A61N 105

Patent

active

052614190

ABSTRACT:
A cardiac pacemaker lead wherein a tubular catheter has a proximal end connected to a pacemaker and a distal end provided with an electrode which can be anchored in or otherwise connected with a wall in the heart of a patient. The lead can be extracted from the body of the patient by resorting to an elongated flexible wire-like stylet having a front end receivable in an internal chamber of the distal end of the catheter. The front end of the stylet constitutes or includes a first coupling element and the chamber confines or is defined by a second coupling element which can be engaged by the first coupling element, e.g., in response to rotation of the fully inserted stylet relative to the catheter or in response to heating of the first coupling element. The coupling prevents tearing of the flexible portion of the catheter and/or separation of the flexible portion from the distal end during extraction of the stylet. The chamber in the distal end of the catheter communicates with a passageway for the stylet, and such passageway is defined by the flexible portion of the catheter.

REFERENCES:
patent: Re32227 (1986-08-01), Dutcher
patent: 4924881 (1990-05-01), Brewer
patent: 5003992 (1991-04-01), Holleman et al.

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