ENDOSCOPIC INSTRUMENTS AND METHODS FOR IMPROVED BUBBLE ASPIRATION AT A SURGICAL SITE
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United States of America Patent
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Aug 26, 2003
Grant Date -
Aug 28, 2003
app pub date -
Feb 25, 2002
filing date -
Feb 25, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
Surgical apparatus and methods provide enhanced aspiration of gaseous bubbles and reduced drag during placement of the surgical apparatus. The surgical apparatus includes a rotatable cutting or shaving tool disposed within a hollow probe, an electrosurgical device on a side of the probe, and one or more aspiration holes or passages through a side of the probe in addition to a main opening at a distal end through which the cutting or abrading tool emerges. The aspiration holes are advantageously located adjacent to the lead electrode(s) of the electrosurgical device. Gaseous bubbles are preferentially aspirated through the aspiration holes. The aspiration holes also serve to reduce drag between the distal end of the surgical probe and soft tissue at, or adjacent to, the surgical site.
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