| 摘要 |
An improved lead extraction system using a rotatable hole saw electrode with a sharp cutting edge that is useful for the extraction and the removal of unwanted lead by a minimal invasive procedure. A lead extraction system suitable for radiofrequency ablation of scar tissues surrounding the implanted lead, is comprised of an outer catheter sheath and an inner delivery catheter having a distal end, a proximal end and at least one lumen extending therebetween, wherein a locking stylet is provided. In one embodiment, the lead extraction system has fluid infusion and irrigation means at its distal tip section and a rotatable hole saw electrode for loosening the target scar tissue by applying radiofrequency energy and cooled fluid to the said electrode and its contacted tissue.
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