Intravenously implantable electrode lead for use with cardiac pacemakers
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United States of America Patent
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-
Nov 5, 1985
Grant Date -
N/A
app pub date -
Oct 12, 1983
filing date -
Oct 12, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An intravenously implantable electrode lead has a conductor whose rear end portion is connected to the casing of a cardiac pacemaker and whose front end has a stimulation surface. A sleeve-like screw surrounds the conductor immediately behind the stimulation surface and has a soft thread made of silicone rubber or polyurethane. The thread can yield during advancement of the screw through the openings of the trabecular network in the heart, and thereupon expand to reliably hold the stimulation surface in contact with a selected portion of the heart. The thread is continuous or discontinuous and tapers radially outwardly, and its height increases gradually from that end which is nearer to the stimulation surface toward the other end.
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