Myocardial lead

Details Myocardial lead Myocardial lead

1976-01-09

1977-06-07

Michell, Robert W.

Surgery

Truss

Pad

128419P, A61N 104

Patent

active

040276775

ABSTRACT:
A myocardial lead for applying electrical pulses to a myocardium includes a relatively large electrode body of a metal, exhibiting high stress fatigue and corrosion resistance properties, a short stud of a metal containing platinum is partially inserted into the electrode body, with the stud portion extending out of the body defining the electrode pin. The stud is electron beam welded to the body. The myocardial lead also includes a distal wire, which consists of a plurality of flexible wire coils of the same metal as the electrode body and are covered by a flexible rubber sleeve. At one end, the wire coils pass through a cavity in the electrode body, with the coils' portion extending therefrom being wrapped around the electrode body and welded thereto. The distal wire extends to a source of electrical pulses. A platinum winding is wrapped around the electrode pin and is attached at one end to the electrode body. A rubber cover is molded around the electrode body and a portion of the distal wire near the electrode body, so that only the electrode platinum pin and several turns of the platinum winding extend therefrom through one side, while the rest of the distal wire extends outwardly from another side of the cover to the source of electrical pulses.

REFERENCES:
patent: 3216424 (1965-11-01), Chardack
patent: 3572344 (1971-03-01), Bolduc
patent: 3749101 (1973-07-01), Williamson
patent: 3880169 (1975-04-01), Starr et al.
"Longer Pacer Life . . . Ball-Electrode Lead," Cordis Corporation, 1974.

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