Myocardial lead
US4027677A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1976 |
| Grant date | Jun 7, 1977 |
| Priority date | — |
| Expiry date | Jan 9, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/0587
- WIPO fieldMedical technology
- WIPO sectorInstruments
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 outwa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.