Medical instrument cutting systems and methods
AssigneeGyrus ACMI, Inc.
InventorNikhil M. Murdeshwar
Life of this patent
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Abstract
An end effector assembly of a tissue resection device may include a first cut guide including a first support surface that extends from a first proximal end portion to a first distal end portion including a first outer distal portion, and a second cut guide located around the first cut guide. The second cut guide may include a second support surface that extends from a second proximal end portion to a second distal end portion having a second outer distal portion. The first outer distal portion may be located distal of the second outer distal portion and the first outer distal portion may also be located farther laterally from the longitudinal axis than the second outer distal portion. The end effector assembly may also include a cutting device located between the first and second cut guides.
Claims19
A tissue resection device comprising:
- an elongate member including a body that extends from a proximal portion to a distal portion and a lumen extending therebetween,
- a handle coupled to the proximal portion;
- an end effector coupled to the distal portion, the end effector extending along a longitudinal axis, the end effector including:
- a first cut guide comprising a first laterally extending base arranged transverse to the longitudinal axis and a first upward extending frustoconical sidewall depending therefrom and defining a continuous outer support surface that extends from a first proximal end portion to a first distal end portion, wherein the first distal end portion includes a first outer distal portion forming a continuous, circular rim surface around the first cut guide;
- a second cut guide located around the first cut guide, the second cut guide comprising a second laterally extending base arranged transverse to the longitudinal axis and a second upward extending frustoconical sidewall depending therefrom and defining a continuous inner support surface that extends from a second proximal end portion near the second laterally extending base to a second distal end portion, wherein the second distal end portion includes a second outer distal portion, and wherein the first outer distal portion is located distal of the second outer distal portion, and wherein the first outer distal portion is located farther laterally from the longitudinal axis than the second outer distal portion;
- and
- a cutting device located between the continuous outer support surface and the continuous inner support surface;
- and
- a cutting device actuator configured to actuate movement of at least a portion of the cutting device to protrude beyond the first outer distal portion and the second outer distal portion, wherein the cutting device is movable in a direction having a longitudinal component and a lateral component when actuated.
An end effector assembly of a tissue resection device, the end effector assembly comprising:
- a first cut guide comprising a first laterally extending base arranged transverse to a longitudinal axis and a first upward extending frustoconical sidewall depending therefrom that extends from a first proximal end portion to a first distal end portion along the longitudinal axis, wherein the first distal end portion includes a first outer distal portion forming a continuous, circular rim surface around the first cut guide;
- a second cut guide located around the first cut guide, the second cut guide comprising a second laterally extending base arranged transverse to the longitudinal axis and a second upward extending frustoconical sidewall depending therefrom and defining a continuous inner support surface that extends from a second proximal end portion to a second distal end portion, wherein the second distal end portion includes a second outer distal portion, wherein the first outer distal portion is located distal of the second outer distal portion, and wherein the first outer distal portion is located farther laterally from the longitudinal axis than the second outer distal portion;
- and
- a cutting device located between the first cut guide and the second cut guide, wherein the cutting device is configured to move relative to at least one of the first cut guide and the second cut guide when actuated.
An end effector assembly of a tissue resection device, the end effector assembly comprising:
- a first cut guide comprising a first laterally extending base arranged transverse to a longitudinal axis and a first upward extending frustoconical sidewall depending therefrom and having a first distal peripheral portion forming a continuous, circular rim surface around the first cut guide;
- a second cut guide comprising a second laterally extending base arranged transverse to the longitudinal axis and a second upward extending frustoconical sidewall depending therefrom and having a second distal peripheral portion, the second cut guide located around the first cut guide, wherein the first distal peripheral portion is located distal of the second distal peripheral portion, and wherein the first distal peripheral portion is located farther laterally from the longitudinal axis of the end effector assembly than the second distal peripheral portion;
- and
- a cutting device located between the first cut guide and the second cut guide, wherein the cutting device is moveable relative to at least one of the first cut guide and the second cut guide.
Dependencies are inferred from the claim text.