Covidien LP

Karcher North America, Inc.

Stephen John Stamm

Jessica E C Olson

Purvishkumar H Soni

Alyssa M Sawyer

James D Allen, Iv

Subhadeep Saha

John A Hammerland, Iii

Craig V Krastins

Scott N Lacosta

Benjamin R Arts

Amir Roomi

Terry M Duffin

Mark E Renner

Michelle Esponda

Victor K Appel

Ross Tichota

Kim V Brandt

William E Robinson

Jason Gary Weihe

Eric Lynn Shark

David Michael Keffeler

Monte S Fry

Sean William Flickinger

Jessica E Olson

Kris Hess

Nicholas Brian O'Kane

Ray Chapman

E Scott Geschwentner

Subhadheep Saha

John A Hammerland Iii

Jessica EC Olson

Ross G Tichota

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 method of disassembling a surgical instrument for reprocessing, includes accessing an interior housing of a surgical instrument to expose a slider assembly, an elongated outer shaft including a drive plate and knife assembly extending therethrough, and a torsion spring of the surgical instrument. The method further includes grasping an upper leg of the torsion spring to disengage the upper leg from a slot defined within the drive plate, disengaging the drive plate from the slider assembly, and removing the torsion spring from the slider assembly.

Method of reprocessing a surgical instrument

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.

A forceps includes an instrument housing, an elongated shaft assembly extending distally from the instrument housing, and a rotation knob assembly. The rotation knob assembly is supported in the instrument housing and includes a rotation knob and an inner housing. The rotation knob is coupled to the shaft assembly and positioned to rotate about the inner housing to rotate the elongated shaft assembly relative to the instrument housing. The inner housing is coupled to the instrument housing and supports electrical contacts configured to transmit electrical energy through the rotation knob assembly.

Electrosurgical forceps

A surgical instrument includes a housing, a movable handle, a trigger, a drive assembly operably coupled between the movable handle and an end effector assembly such that movement of the movable handle from an initial position to a compressed position manipulates the end effector assembly, and a linkage operably coupled between the trigger and a knife such that movement of the trigger from an un-actuated position to an actuated position rotates the linkage to deploy the knife relative to the end effector assembly. A drive housing of the drive assembly inhibits rotation of the linkage when the movable handle is disposed in the initial position and the trigger is disposed in the un-actuated position. The drive housing cams along a surface of the linkage to urge the linkage to rotate when the movable handle is returned towards the initial position, thereby returning the trigger towards the un-actuated position.

Surgical instruments for performing tonsillectomy, adenoidectomy, and other surgical procedures

An endoscopic bipolar forceps includes a housing having a shaft extending therefrom including an end effector assembly disposed at a distal end thereof having jaw members. A movable handle is pivotable relative to the housing from an initial position wherein the jaw members are spaced relative to one another to a compressed position wherein the jaw members are closed about tissue. A trigger assembly is pivotably coupled to the movable handle and includes a trigger operably coupled to a knife assembly having a knife, a knife drive bar and a cam pin. The trigger includes an elongated slot defined therein configured to house the cam pin for translation therein. Upon actuation of the movable handle, the trigger moves in unison with the movable handle to the compressed position and the cam pin rides within the elongated slot maintaining consistent angle between the movable handle and the trigger during movement thereof.

Surgical instrument with enhanced trigger

A surgical instrument includes a housing having a movable handle operably coupled to the housing and movable relative thereto between an initial position and a compressed position. A trigger is operably coupled to the housing within a slot defined therein and movable relative to the housing and the movable handle between an un-actuated position and an actuated position. A flange is disposed on the trigger and configured to extend distally therefrom. The flange is dimensioned to cover the slot when the trigger is moved between the un-actuated and actuated positions to avoid creating a potential pinch point between the trigger and the slot.

Surgical instruments and methods of manufacturing surgical instruments for performing tonsillectomy, adenoidectomy, and other surgical procedures

A surgical instrument includes a housing, a shaft extending distally from the housing, an end effector assembly disposed at a distal end of the shaft, a knife slidably disposed within the shaft, a movable handle operably coupled to the housing, a trigger operably coupled to the housing, a drive assembly operably coupled between the movable handle and the end effector assembly such that movement of the movable handle manipulates the end effector assembly, and a linkage operably coupled between the trigger and the knife such that movement of the trigger deploys the knife. In an initial position of the movable handle, a portion of a drive housing of the drive assembly intersects a path of movement of the linkage to inhibit movement of the linkage, thereby inhibiting actuation of the trigger.

A cleaning fixture for a surgical instrument includes a handle receiving portion configured to receive a housing of a surgical instrument, a shaft receiving portion configured to receive a shaft and an end effector assembly of the surgical instrument, and a knife actuation assembly movably coupled to the handle receiving portion or the shaft receiving portion. The shaft receiving portion extends distally of the handle receiving portion. The knife actuation assembly is configured to selectively actuate a knife trigger assembly of the surgical instrument to advance a knife of the surgical instrument between jaw members of the end effector assembly thereof.

Cleaning systems for reprocessing surgical instruments

Methods and devices are described for the design and manufacturing of a knife with a robust double bevel cutting edge profile for use in surgical procedures. The double bevel cutting edge profile may be defined by a combination of a cutting edge angle and a radius of the cutting edge tip. In some embodiments, the cutting edge profile may be defined by a combination of a web thickness profile and a radius of the cutting edge tip. Numerical ranges are identified for each of the various geometric parameters which may define a cutting edge that provides sufficient knife sharpness over many cutting repetitions. In some embodiments a medical device, which implements a knife with a cutting edge, for use in surgical procedures is described.

Double bevel blade tip profile for use in cutting of tissue

A surgical instrument includes a shaft defining a lumen, an end effector assembly disposed at the distal end portion of the shaft, a drive plate, a first electrical wire, and a wire guide. The end effector assembly includes a first electrically-conductive tissue-treating surface. The drive plate extends through the lumen of the shaft and operably engages the end effector assembly such that movement of the drive plate through the lumen of the shaft manipulates the end effector assembly. The first electrical wire also extends through the lumen of the shaft and is configured to supply energy to the first electrically-conductive tissue-treating surface. The wire guide is engaged to a distal portion of the drive plate and is configured to move through the lumen of the shaft in conjunction with the drive plate. The wire guide is also configured to receive the first electrical wire.

Growing community of inventors

Wheat Ridge, CO, United States of America

Stephen John Stamm