Covidien LP

Amir Roomi

Jessica E C Olson

John A Hammerland, Iii

Stephen John Stamm

Purvishkumar H Soni

Scott N Lacosta

Alyssa M Sawyer

Benjamin R Arts

Terry M Duffin

Mark E Renner

Michelle Esponda

Jessica EC Olson

John A Iii Hammerland

A surgical instrument includes a movable handle movable relative a housing to manipulate an end effector assembly, and a rotation assembly. The rotation assembly includes first and second bodies, where one of the bodies is fixedly disposed within a housing and the other body is rotatably disposed within the housing and fixedly disposed about a shaft. An inner contact ring is fixedly disposed on the first body and includes a first electrical connector. An outer contact ring is fixedly disposed on the first body and includes a second electrical connector. First and second spring contacts maintain electrical contact with the inner and outer contact rings. Each of the first and second spring contacts include a substructure that includes a brush holder, an extension, an electrical connector, and a spring that biases the brush towards the inner or outer contact ring to maintain electrical contact.

Rotation assembly for energy-based surgical instruments

A surgical instrument includes a housing and a trigger assembly. The trigger assembly includes a trigger including a drive portion and a manipulation portion, a rocker, a linkage, and a slider. The trigger is pivotably coupled to the housing such that the drive and manipulation portions are moved in different directions in response to actuation of the trigger. The drive portion of the trigger is pivotably coupled to the rocker. The linkage is pivotably coupled to the rocker and the housing at opposing end portions thereof. The slider is pivotably coupled to the rocker and operably coupled to the deployable component. Actuation of the manipulation portion of the trigger moves the drive portion of the trigger distally to thereby urge the rocker distally, pivot the linkage about the second end portion thereof, and slide the slider distally to deploy the deployable component distally.

Energy-based surgical instrument for grasping, treating, and/or dividing tissue

A surgical instrument includes a housing, a shaft extending distally from the housing, an end effector assembly at a distal end portion of the shaft, and a drive assembly. The drive assembly includes a movable handle, a carriage operably coupled to the movable handle, an inner drive operably coupled to the end effector assembly, and a spring assembly operably coupling the carriage and the inner drive. The spring assembly includes inner and outer coil springs arranged in a nested configuration. Initial actuation of the movable handle slides the carriage such that the spring assembly transfers the sliding of the carriage into translation of the inner drive to apply a jaw force by the end effector assembly. Subsequent actuation of the movable handle slides the carriage to compress the spring assembly to substantially maintain a position of the inner drive, thereby controlling the jaw force.

A surgical instrument includes a movable handle movable relative a housing to manipulate an end effector assembly, and a latch assembly. The latch assembly includes a latch arm including a latch post, and a latch track defining an entry path, a latching path, a saddle, an un-latching path, and a return path. The latch post moves through the entry path, the latching path, and into the saddle upon movement of the movable handle from an un-actuated position to an over-actuated position and back to an actuated position to lock the movable handle. The latch post moves from the saddle through the un-latching path and the return path upon movement of the movable handle from actuated position to the over-actuated position and back to the un-actuated position. The return path includes a ramped surface configured to inhibit reverse travel of the latch post into the return path.

An insertion tool facilitating assembly of a surgical instrument includes a housing defining a distal end portion, a proximal end portion, and a central lumen. The central lumen extends therethrough the housing between a distal opening and a proximal opening, and defines a proximal portion and a distal portion. The central lumen is configured to receive a portion of a pin within the distal portion thereof. The insertion tool further includes retention channel defined about the housing at the distal end portion thereof. The retention channel is in communication with the central lumen. A D-ring is at least partially seated within the retention channel and extends into the distal portion of the central lumen to retain the pin therein by applying a compressive force to the pin. A plunger is configured to slide through the central lumen to deploy the pin distally from the distal opening of the central lumen.

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Boulder, CO, United States of America

Amir Roomi