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US 9,539,017 B2Granted
Endoscopic snare device
AssigneeUnited States Endoscopy Group, Inc.
InventorsScott Haack, Cindy Ranallo, Craig Moore, Alexis Uspenski, Steven Torer, Rapheal Still
Life of this patent
Estimating the term…
Abstract
A tissue removal tool for use with an endoscope. The tool includes a loop formed by a piece of wire. The loop is movable between an open position and a closed position. The shape of the loop is defined in the open position by a proximal portion and a distal portion. The piece of wire may have a cross-sectional height in the proximal portion unequal to a cross-sectional height in the distal portion.
Claims18
A tissue removal tool for use with an endoscope, the tool comprising:
- a loop formed by a piece of wire and moveable between an open position and a closed position;
- a handle;
- a link having a first end attached to the handle and a second end attached to the loop, the loop being moveable between the open and closed positions by action of the handle;
- wherein the shape of the loop is defined in the open position by a proximal portion and a distal portion, the proximal portion and the distal portion being separated by a transitional portion, wherein the loop is defined by a single twist that extends substantially along an elongate axis of the wire by at least 45 degrees on each side of the transitional portion so that the proximal portion pushed against a piece of tissue being removed to raise the piece of tissue and pinches the piece of tissue, and the distal portion transects the piece of tissue after the proximal portion pinches the piece of tissue;
- and
- wherein the proximal portion comprises at least two collapse-resistant bends on at least one side of the loop.
3 more elements
A snare for use with an endoscope, the snare comprising:
- a support assembly having a base and an elongated hollow tube;
- a transmitting assembly having a handle movable relative to the base and a link having a first end fixed to the handle and a second end remote from the base, the link extending substantially through a length of the tube;
- and
- a loop formed by a piece of wire and attached to the link, and the loop being movable between an expanded position and a collapsed position by action of the handle relative to the base;
- wherein the loop is formed by a proximal portion, a distal portion, and a transitional portion separating the proximal portion and the distal portion, wherein the loop is defined by a single twist that extends substantially along an axis of the wire by at least 45 degrees on each side of the transitional portion so that the proximal portion pushes against a piece of tissue being removed to raise the piece of tissue and pinches the piece of tissue, and the distal portion transects the piece of tissue after the proximal portion pinches the piece of tissue;
- and
- wherein the proximal portion comprises at least two collapse-resistant bends on at least one side of the loop.
4 more elements
A tissue removal tool for use with an endoscope, the tool comprising:
- a loop formed by a piece of wire and movable between an open position and a closed position;
- a handle;
- a link having a first end attached to the handle and a second end attached to the loop, the loop being moveable between the open and closed positions by action of the handle;
- wherein the shape of the loop is defined in the open position by a proximal portion and a distal portion, the piece of wire having a cross-sectional height along a majority of the length of the proximal portion unequal to a cross-sectional height along a majority of the length of the distal portion;
- wherein the proximal portion and the distal portion are separated by a transitional portion, wherein the loop is defined by a single twist that extends substantially along an elongate axis of the wire by at least 45 degrees on each side of the transitional portion so that the proximal portion pushes against a piece of tissue being removed to raise the piece of tissue and pinches the piece of tissue, and the distal portion transects the piece of tissue after the proximal portion pinches the piece of tissue;
- and
- wherein the proximal portion comprises at least two collapse-resistant bends on at least one side of the loop.
4 more elements
Dependencies are inferred from the claim text.