Electrode lead with temporary increased stiffness during ingrowth
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United States of America Patent
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Feb 13, 2001
Grant Date -
N/A
app pub date -
Jul 26, 1999
filing date -
Dec 4, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An implantable lead for an implantable active device, such as a pacemaker, has at least two electrodes, and a proximal end adapted for electrical and mechanical connection to the active device and a distal end opposite the proximal end. A ventricular electrode is carried at the distal end of the lead for sensing and/or electrical interaction with the ventricle, and an atrial electrode is carried on the lead for sensing and/or electrical interaction with the atrium, the atrial electrode being disposed between the proximal end and the ventricular electrode. The lead at its distal end has a first part with a first predetermined length, which is between 9 and 13 cm, and which exhibits a first stiffness. Adjacent to this first part is a second part, having a second predetermined length, which exceeds 15 cm, and which exhibits a second stiffness. The first stiffness of the first part provides the overall lead with a stiffness so as to force the atrial electrode in contact with the atrial wall when the lead is implanted. The second stiffness is greater then the first stiffness. The lead has a transition point between the first part and the second part, disposed at the proximal end of the second part.
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