Surgical micro-resecting instrument with electrocautery and continuous aspiration features
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United States of America Patent
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Dec 27, 2005
Grant Date -
May 5, 2005
app pub date -
Nov 4, 2003
filing date -
Nov 4, 2003
priority date (Note) -
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Abstract
A surgical micro-resecting instrument including an outer tubular member, an inner tubular member, a hub assembly, and an electrical insulator. The outer tubular member is formed of an electrically conductive material and defines a proximal section, a distal section, and a lumen. The distal section forms an axial passage distal a cutting window, both of which are fluidly connected to the lumen. The inner tubular member is disposed within the lumen and defines a distal portion that forms a cutting tip. The hub assembly maintains the inner and outer tubular members. The electrical insulator covers a region of the outer tubular member distal the hub assembly. In this regard, at least the cutting window is not covered by the electrical insulator for cauterizing contacted tissue via the energy. The axial passage facilitates continuous aspiration.
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