Apparatus for pulling out an object, having an elongated inner lumen, from its anchorage in a body
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United States of America Patent
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Mar 19, 2002
Grant Date -
N/A
app pub date -
Jun 20, 2000
filing date -
Jun 24, 1999
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An extraction apparatus for heart pacemaker electrodes or defibrillator electrodes has an anchoring part which can be deformed using an actuating device from a displacement configuration into an expanded locking configuration. The anchoring part has a tube section with several wall cut-outs, which are offset in the axial direction and between which guide rings remain, which are connected by trough-shaped cross members. By exerting a tensile force on a control wire using the actuating device, the tube section is compressed and the trough-shaped cross members are deformed radially, so that they attain engagement with the inner lumen of the spiral helix of a heart pacemaker electrode cable or defibrillator electrode cable and, as a result of a spiral offset, bring about a positive locking, which permits high pull-out forces.
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