Endocardial extendable screw-in lead
US4570642A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1983 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Sep 23, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/0573
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An intravascular endocardial lead includes an electrically insulated flexible conductor having a lumen throughout the length thereof. A hollow connector element is connected to the proximal end of the conductor, and a hollow elongate electrode is connected to the distal end thereof. A helix assembly is positioned in the electrode and is longitudinally but non-rotatably movable from a retracted position to an extended position. A stylet is inserted through the lumen of the conductor to move the helix assembly to the extended position. Thereafter, when the conductor, electrode and helix assembly are rotated as a unit about the stylet, the helix assembly will penetrate and positively attach the lead to the body tissue and urge the electrode into engagement with the latter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.