公开(公告)号：US12167884B2

公开(公告)日：2024-12-17

申请号：US17554139

申请日：2021-12-17

Applicant: Covidien LP

Inventor： Todd W. Boucher ,  William E. Robinson ,  Monte S. Fry ,  James D. Allen, IV ,  Jennifer R. McHenry

IPC: A61B18/12 ,  A61B18/00 ,  A61B18/14

Abstract: An electrosurgical system includes an electrosurgical instrument having an electrode with a polymeric dielectric coating; and an electrosurgical generator, which includes a power converter configured to generate RF energy; a sensor coupled to the power converter and configured to sense a parameter of the RF energy; and a controller coupled to the sensor and the power converter. The controller is configured to control the power converter to output an RF waveform to achieve conductor breakthrough through the polymeric dielectric coating. The controller is further configured to determine whether the conductor breakthrough occurred based on the parameter; and execute a treatment algorithm based on a determination of the conductor breakthrough.

公开(公告)号：US20230380879A1

公开(公告)日：2023-11-30

申请号：US18027682

申请日：2021-08-25

Applicant: Covidien LP

Inventor： James D. Allen, IV ,  William E. Robinson ,  Daniel A. Joseph ,  John A. Hammerland, III ,  Kenneth E. Netzel

IPC: A61B18/08 ,  A61B18/14

CPC classification number: A61B18/085 ,  A61B18/1445 ,  A61B2018/00077

Abstract: An end effector assembly for an electrosurgical instrument includes a pair of opposing jaw members each having a jaw housing supporting an electrically conductive tissue engaging surface thereon. The tissue engaging surfaces are disposed in opposition relative to one another and one or both of the jaw members are movable relative to one another to grasp tissue therebetween. First, second and third thermal cutting elements are disposed on one or both of the tissue engaging surfaces. Each thermal cutting element is independently activatable (or activatable in pairs) relative to the tissue engaging surfaces and each thermal cutting element connects to an electrosurgical energy source. The first thermal cutting element is exposed along the length of the tissue engaging surface, the second thermal cutting element surrounds the distal tip of the jaw member and the third thermal cutting element is disposed on the back of the jaw housing.

公开(公告)号：US20230240740A1

公开(公告)日：2023-08-03

申请号：US18092659

申请日：2023-01-03

Applicant: Covidien LP

Inventor： William E. Robinson ,  James D. Allen, IV

IPC: A61B18/08

CPC classification number: A61B18/085 ,  A61B2018/00714

Abstract: A thermal element configured for thermally treating tissue includes a substrate, an insulating layer disposed on the substrate, and a resistive trace circuit disposed on the insulating layer and including first and second ends adapted to connect to a source of energy for energizing the resistive trace circuit, thereby heating the thermal element. The resistive trace circuit: includes at least first and second sections defining different configurations and disposed between the first and second ends; is configured to maintain a temperature variation of no greater than about 25° C. along at least a majority of a length of the thermal element; and/or is configured to define a temperature gradient profile that varies at least about 50° C. along a length of the thermal element at a target operating temperature thereof.

公开(公告)号：US20230129956A1

公开(公告)日：2023-04-27

申请号：US17914300

申请日：2021-03-11

Applicant: Covidien LP

Inventor： Michael B. Lyons ,  Thomas E. Drochner ,  David J. Van Tol ,  Devon E. Scott-Drechsel ,  James D. Allen, IV

IPC: A61B18/14

Abstract: A surgical instrument includes an ultrasonic transducer supported by a housing and an elongated assembly extending distally therefrom. The elongated assembly includes a jaw and a waveguide coupled to the transducer and defining a blade having upper and lower tissue-contacting surface and first and second lateral surfaces disposed therebetween that are coated with a material. The jaw is pivotable relative to the blade and includes a structural base having a backspan and first and second uprights extending from the backspan. The jaw further includes a jaw liner supported within the structural base and positioned to oppose the upper tissue-contacting surface with the first and second uprights disposed on either side of the blade. In an ultrasonic mode, ultrasonic energy produced by the transducer is transmitted along the waveguide to the blade. In an electrosurgical mode, electrosurgical energy is conducted between the blade and the first and second uprights.

公开(公告)号：US11547463B2

公开(公告)日：2023-01-10

申请号：US16565150

申请日：2019-09-09

Applicant: COVIDIEN LP

Inventor： Prakash Manley ,  James D. Allen, IV ,  Tyler J. Bagrosky ,  Conor N. Byrne ,  Jason T. Sanders ,  Chelsea E. Walbridge ,  Chandler E. Lacy

IPC: A61B18/14 ,  A61B18/00 ,  A61B90/00 ,  A61M39/10

Abstract: An electrosurgical smoke evacuation pencil includes a handle housing having a proximal end portion and a distal end portion, the handle housing defining a first lumen therethrough. The electrosurgical pencil also includes a nozzle disposed within the first lumen and defining a second lumen, the nozzle being movable relative to and within the handle housing and extending proximally past the proximal end portion of the handle housing. The electrosurgical pencil may further include a swivel connector coupled to the distal end portion of the handle housing, the swivel connector configured to couple to a suction source. The electrosurgical pencil includes a hub assembly securedly disposed within the second lumen, the hub assembly including a conductive tube configured to couple to a source of electrosurgical energy, and an electrode slidably disposed within the conductive tube, the electrode being movable relative to and within the conductive tube.

公开(公告)号：US20220409265A1

公开(公告)日：2022-12-29

申请号：US17849032

申请日：2022-06-24

Applicant: Covidien LP

Inventor： Grant T. Sims ,  William R. Whitney ,  Jason G. Weihe ,  James D. Allen, IV ,  Jason T. Sanders ,  Alyssa M. Sawyer ,  Curtis M. Siebenaller

IPC: A61B18/14 ,  A61B18/12

Abstract: A vessel sealing instrument includes a housing having a shaft extending from a distal end thereof having an end effector assembly including a pair of opposing first and second jaw members operably coupled thereto. A drive assembly is disposed within the housing and is configured to move the jaw members upon actuation thereof between an open position and a closed position for clamping tissue with a closure pressure within the range of about 3 kg/cm2 to about 16 kg/cm2. An anti-backdrive assembly is operably disposed within the housing and includes a drive wedge. A solenoid controller is operably coupled to the drive wedge and is configured to selectively move the drive wedge into the drive assembly upon activation thereof to increase the closure pressure between the jaw members in response to tissue expansion during sealing.

公开(公告)号：US11523862B2

公开(公告)日：2022-12-13

申请号：US16513985

申请日：2019-07-17

Applicant: COVIDIEN LP

Inventor： Duane E. Kerr ,  James D. Allen, IV ,  Edward M. Chojin ,  Allan J. Evans ,  Russell D. Hempstead ,  Glenn A. Horner ,  Mark J. Huseman ,  Daniel A. Joseph ,  Arlen J. Reschke ,  Robert M. Sharp

IPC: A61B18/14 ,  A61B17/295 ,  A61B18/08 ,  A61B17/28 ,  A61B17/3213 ,  A61B17/29 ,  A61B18/18 ,  A61B18/00 ,  A61B17/00

Abstract: A forceps includes an end effector assembly having first and second jaw members movable between a spaced-apart position and an approximated position for grasping tissue therebetween. A knife assembly having a cutting blade disposed at a distal end thereof is also provided. The knife assembly is translatable relative to the end effector assembly between a retracted position and an extended position, wherein the cutting blade extends between the jaw members to cut tissue grasped therebetween. The knife assembly includes a proximal component and a first distal component that includes the cutting blade. The proximal and first distal components are removably coupled to one another to facilitate replacement of the first distal component. Methods of preparing such forceps for reuse are also provided.

公开(公告)号：US20220378494A1

公开(公告)日：2022-12-01

申请号：US17331812

申请日：2021-05-27

Applicant: Covidien LP

Inventor： James D. Allen, IV ,  William D. Faulkner ,  Duane E. Kerr

IPC: A61B18/14 ,  A61B18/12

Abstract: An electrosurgical system includes jaw members having a cutting element extending therebetween and a generator configured to: provide minimal power to the cutting element to maintain a pre-dissection temperature thereof; sense a change in resistance of the cutting element and ramp up power to a dissection temperature; regulate the temperature of the cutting element by regulating power; and terminate power to the cutting element to allow the cutting element to cool to the pre-dissection temperature before providing power back to the cutting element.

公开(公告)号：US11272947B2

公开(公告)日：2022-03-15

申请号：US16029834

申请日：2018-07-09

Applicant: COVIDIEN LP

Inventor： Stephen J. Stamm ,  James D. Allen, IV ,  Victor K. Appel ,  Craig V. Krastins ,  Jessica E. C. Olson ,  Purvishkumar H. Soni ,  Ross Tichota

IPC: A61B18/14 ,  A61B17/3205 ,  A61B17/28 ,  A61B17/285 ,  A61B17/26 ,  A61B17/00 ,  A61B17/32 ,  A61B18/00 ,  A61B34/35

Abstract: 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.

公开(公告)号：US11090099B2

公开(公告)日：2021-08-17

申请号：US15946366

申请日：2018-04-05

Applicant: COVIDIEN LP

Inventor： James D. Allen, IV

IPC: A61B18/00 ,  A61B18/14 ,  A61B17/29

Abstract: A forceps includes a shaft defining first opposed distal recesses, a drive bar slidably disposed within the shaft and defining second opposed distal recesses, and an end effector assembly including first and second jaw members. Each jaw member defines a proximal flange and a distal jaw body. The proximal flanges each define an aperture and a cam slot. A pivot pin extends through the apertures with ends of the pivot pin extending outwardly from the jaw members to be at least partially disposed within the first recesses and fixedly engaged therewith. A drive pin extends through the cam slots with ends of the drive pin extending outwardly from the jaw members to be at least partially disposed within the second recesses and fixedly engaged therewith such that translation of the drive bar relative to the end effector assembly pivots the jaw members between spaced-apart and approximated positions.