Tissue extraction devices and methods
First Claim
Patent Images
1. A tissue resecting device comprising:
- an assembly comprising an outer sleeve with a distal window and an inner sleeve configured to longitudinally reciprocate between a proximal position and a distal position relative to the window during use; and
wherein the inner sleeve has a distally-facing distal tissue-resecting edge that is displaced radially inwardly from an outer diameter of said inner sleeve, said displaced edge comprising an annular tissue-resecting electrode.
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Abstract
A tissue cutting device has an outer sleeve with a distal window and an inner cutting sleeve which moves past the window to cut tissue. The inner cutting sleeve has a lumen which may have a larger proximal diameter than distal diameter. A perimeter of the window may comprise a dielectric material. A distal edge of the inner sleeve may be displaced inwardly.
101 Citations
25 Claims
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1. A tissue resecting device comprising:
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an assembly comprising an outer sleeve with a distal window and an inner sleeve configured to longitudinally reciprocate between a proximal position and a distal position relative to the window during use; and wherein the inner sleeve has a distally-facing distal tissue-resecting edge that is displaced radially inwardly from an outer diameter of said inner sleeve, said displaced edge comprising an annular tissue-resecting electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A tissue resecting device comprising:
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an outer sleeve including a side window opening into a lumen of the outer sleeve; and an inner sleeve positioned in the lumen of the outer sleeve, the inner sleeve comprising; a tubular shaft having a tissue extraction lumen extending therethrough, and a tubular electrode having an inner diameter and an outer diameter; wherein the inner sleeve is configured to longitudinally reciprocate between a proximal position and a distal position relative to the window; wherein a proximal portion of the tubular electrode extends into the lumen of the tubular shaft with a distal portion of the tubular electrode extending distally from the tubular shaft; wherein the outer diameter of the tubular electrode is displaced radially inwardly from an outer diameter of said tubular shaft. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A tissue resecting device comprising:
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an outer sleeve including a side window opening into a lumen of the outer sleeve; an inner sleeve positioned in the lumen of the outer sleeve, the inner sleeve comprising; a tubular shaft having a tissue extraction lumen extending therethrough, and a tubular electrode having an inner diameter and an outer diameter; wherein a proximal portion of the tubular electrode extends into the lumen of the tubular shaft with a distal portion of the tubular electrode extending distally from a distal end of the tubular shaft; wherein the outer diameter of the tubular electrode is displaced radially inwardly from an outer diameter of said tubular shaft; wherein the inner sleeve is configured to longitudinally reciprocate relative to the outer sleeve such that the tubular electrode repeatedly moves between a proximal position in which a distal end of the tubular electrode is located proximal of the window and a distal position in which the distal end of the tubular electrode is located distal of the window. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification