Endoscopic open wire snare system
AssigneeVarun Kesar
InventorVarun Kesar
Life of this patent
Estimating the term…
Abstract
An embodiment relates to a product comprising an open loop polypectomy snare comprising: a) a handle; b) a tubular sheath having proximal and distal ends, the distal end defining a longitudinal axis; c) a snare wire having a first end and a second end extending from cavity of the tubular sheath and relatively movable with respect to the tubular sheath, wherein the first end is attached to the handle, d) at least two snare hemi-loops attached to the second end of the snare wire, wherein the hemi-loops configured to advance and recede inside the tubular sheath such that the hemi-loops are in closed form inside the tubular sheath, and when the hemi-loops advance from the tubular sheath, they open to encircle a matter of choice and join at a joint to form a closed loop to resect the matter of choice.
Claims20
A product comprising an open loop polypectomy snare comprising:
- a) a handle;
- b) a tubular sheath having proximal and distal ends, said distal end defining a longitudinal axis;
- c) a snare wire having a first end and a second end extending from a cavity of the tubular sheath and relatively movable with respect to the tubular sheath, wherein the first end is attached to the handle,
- d) at least two snare hemi-loops attached to the second end of the snare wire,
- wherein said at least two snare hemi-loops are configured to advance and recede inside the tubular sheath such that said at least two snare hemi-loops are configured to be in a contracted state inside the tubular sheath,
- when said at least two snare hemi-loops advance from the tubular sheath, they are configured to expand to encircle a matter of choice and join at their distal ends at a joint to form a closed loop configuration to resect the matter of choice;
- and
- when said at least two snare hemi-loops retract into the tubular sheath, they are configured to separate at their distal ends to open the closed loop configuration, and the at least two snare hemi-loops contract from its expanded state to the contracted state;
- wherein movement of said at least two snare hemi-loops from the tubular sheath and/or opening and closing of said at least two snare hemi-loops are controlled by the handle;
- wherein the open loop polypectomy snare is configured to remove the matter of choice in an endoscopic resection;
- wherein a portion of the snare wire and at least one of the hemi-loops of said at least two snare hemi-loops comprise an electrically conductive material that on a supply of a cautery current is configured to cut the matter of choice electrically;
- and
- wherein said handle comprises a feature configured to supplying the cautery current to the electrically conductive material.
A product comprising an open loop polypectomy snare comprising:
- a) a handle;
- b) a tubular sheath having proximal and distal ends, said distal end defining a longitudinal axis;
- c) a snare wire having a first end and a second end extending from a cavity of the tubular sheath and relatively movable with respect to the tubular sheath, wherein the first end is attached to the handle,
- d) at least two snare hemi-loops attached to the second end of the snare wire,
- wherein said at least two snare hemi-loops are configured to advance and recede inside the tubular sheath such that said at least two snare hemi-loops are configured to be in a contracted state inside the tubular sheath,
- when said at least two snare hemi-loops advance from the tubular sheath, they are configured to expand to encircle a matter of choice and join at their distal ends at a joint to form a closed loop configuration to resect the matter of choice;
- and
- when said at least two snare hemi-loops retract into the tubular sheath, they are configured to separate at their distal ends to open the closed loop configuration and the at least two snare hemi-loops contract from its expanded state to the contracted state;
- wherein movement of said at least two snare hemi-loops from the tubular sheath and/or opening and closing of said at least two snare hemi-loops are controlled by the handle;
- and
- wherein the open loop polypectomy snare is configured to remove the matter of choice in an endoscopic resection.
Dependencies are inferred from the claim text.