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US 12,310,649 B2Granted
Tissue extraction devices and methods
AssigneeMinerva Surgical, Inc.
InventorsAaron Germain, Kyle Klein, Michael D. Walker, Benedek Orczy-Timko, Balazs Lesko
Life of this patent
Estimating the term…
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.
Claims20
A tissue resecting device comprising:
- an outer sleeve including a side window opening into a lumen of the outer sleeve, the outer sleeve defining a first electrode having a first polarity;
- 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 secured to and extending distally from a distal end of the tubular shaft, the tubular electrode having a second polarity opposite the first electrode;
- wherein the inner sleeve is configured to longitudinally reciprocate relative to the outer sleeve such that the tubular electrode is movable across the side window in a distal direction during a forward stroke and in a proximal direction during a retracting stroke;
- and
- a controller configured to apply RF current between the first electrode and the tubular electrode during at least a portion of the forward stroke.
4 more elements
A tissue resecting device comprising:
- an outer sleeve including a side window opening into a lumen of the outer sleeve, the outer sleeve defining a first electrode having a first polarity;
- 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,
- a tubular electrode secured to and extending distally from a distal end of the tubular shaft, the tubular electrode having a second polarity opposite the first electrode;
- and
- a ceramic collar surrounding the tubular electrode distal of the distal end of the inner sleeve;
- wherein the inner sleeve is configured to longitudinally reciprocate relative to the outer sleeve such that the tubular electrode is movable across the side window from a window open configuration to a window closed configuration.
4 more elements
Dependencies are inferred from the claim text.