Tissue extraction devices and methods
First Claim
Patent Images
1. An electrosurgical tissue resecting probe, comprising:
- an elongated assembly comprising an outer sleeve having a tissue-receiving window open to an interior lumen thereof and a moveable inner resecting sleeve disposed within the interior lumen of the outer sleeve that provides open-window and closed-window configurations adapted to electrosurgically resect tissue disposed within the tissue-receiving window;
wherein an edge of the tissue-receiving window at least partly comprises a dielectric material.
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Abstract
The tissue cutting device comprises an elongated assembly including both an outer sleeve and an inner sleeve. The outer sleeve has a tissue-receiving window, and the inner sleeve has a distal end which cuts tissue as the inner sleeve is advanced past the window. The tissue is received into a lumen of the inner sleeve, and the inner sleeve lumen is typically enlarged in a proximal direction to reduce the tendency of resected tissue to lodge therein. The tissue displacement member is optionally provided at a distal end of the outer sleeve to further aid in dislodging tissue which becomes captured in a distal end of the inner sleeve of the lumen.
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Citations
20 Claims
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1. An electrosurgical tissue resecting probe, comprising:
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an elongated assembly comprising an outer sleeve having a tissue-receiving window open to an interior lumen thereof and a moveable inner resecting sleeve disposed within the interior lumen of the outer sleeve that provides open-window and closed-window configurations adapted to electrosurgically resect tissue disposed within the tissue-receiving window; wherein an edge of the tissue-receiving window at least partly comprises a dielectric material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electrosurgical tissue resecting probe, comprising:
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an outer sleeve having a closed distal tip fixedly attached thereto and a side-opening tissue-receiving window open to an interior lumen thereof; and a longitudinally-reciprocating inner resecting sleeve disposed within the interior lumen of the outer sleeve that provides open-window and closed-window configurations adapted to electrosurgically resect tissue disposed within the tissue-receiving window; wherein a distal end of the inner resecting sleeve comprises an RF electrode; wherein an edge of the tissue-receiving window is defined by a dielectric material. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification