Apparatus and method for expanding a stimulation lead body in situ
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United States of America Patent
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Sep 18, 2001
Issued Date -
N/A
app pub date -
May 31, 2000
filing date -
Apr 30, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An implantable lead is provided with at least one extendable member to position therapy delivery elements, which may be electrodes or drug delivery ports, after the lead has been inserted into the body. The lead may formed as a resilient element which is contained in a retainer tube that may be removed to permit the lead to deploy. Alternatively, a non-resilient lead may be provided with a slotted retainer tube. A series of mechanical linkages for expanding and retracting the lead within the human body may be actuated with various mechanisms. A control system may be provided for closed-loop feedback control of the position of the extendable members. The invention also includes a method for expanding an implantable lead in situ.
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