Electrosurgical instruments with electrodes having variable energy densities
AssigneeCilag GmbH International
InventorsFrederick E. Shelton, IV, Kevin M. Fiebig, Taylor W. Aronhalt, Sarah A. Worthington
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Abstract
An electrosurgical instrument comprising an end effector is disclosed. The end effector comprises a first jaw and a second jaw. At least one of the first jaw and the second jaw is movable to transition the end effector from an open configuration to a closed configuration to grasp tissue therebetween. The second jaw comprises linear portions cooperating to form an angular profile and a treatment surface comprising segments extending along the angular profile. The segments comprise different geometries and different conductivities. The segments are configured to produce variable energy densities along the treatment surface.
Claims42
An electrosurgical instrument, comprising:
- an end effector, comprising:
- a first jaw;
- and
- a second jaw, wherein at least one of the first jaw and the second jaw is movable to transition the end effector from an open configuration to a closed configuration to grasp tissue therebetween, and wherein the second jaw comprises:
- linear portions cooperating to form an angular profile;
- and
- a treatment surface comprising segments extending along the angular profile, wherein the segments comprise different geometries and different conductivities, and wherein the segments are configured to produce variable energy densities along the treatment surface.
An electrosurgical instrument, comprising:
- an end effector, comprising:
- a first jaw;
- and
- a second jaw, wherein at least one of the first jaw and the second jaw is movable to transition the end effector from an open configuration to a closed configuration to grasp tissue therebetween, wherein the second jaw comprises a gradually narrowing body extending from a proximal end to a distal end, and wherein the gradually narrowing body comprises a tissue contacting surface comprising:
- an insulative layer comprising a first material, wherein the insulative layer extends on opposite sides of an intermediate area extending along a length of the gradually narrowing body;
- and
- segments configured to yield variable energy densities along the tissue contacting surface, wherein the segments comprise:
- conductive segments;
- and
- insulative segments alternating with the conductive segments along the intermediate area, wherein the insulative segments comprise a second material different from the first material.
An electrosurgical instrument, comprising:
- an end effector configurable between an open configuration and a closed configuration, wherein the end effector comprises:
- a first jaw;
- and
- a second jaw, comprising:
- a first linear portion;
- a second linear portion extending transversely from the first linear portion;
- a first segment extending along the first linear portion, wherein the first segment comprises a first geometry and a first conductivity;
- and
- a second segment extending along the second linear portion, wherein the second segment comprises a second geometry different than the first geometry and a second conductivity different than the first conductivity.
An electrosurgical instrument, comprising:
- an end effector configurable between an open configuration and a closed configuration, wherein the end effector comprises:
- a first jaw;
- and
- a second jaw comprising a tissue contacting surface, wherein the tissue contacting surface comprises:
- an insulative layer comprising a first material;
- and
- segments configured to yield variable energy densities along the tissue contacting surface, wherein the segments comprise:
- conductive segments;
- and
- insulative segments selectively interrupting the conductive segments along the tissue contacting surface, wherein the insulative segments comprise a second material different from the first material.
Dependencies are inferred from the claim text.