公开(公告)号：US10646267B2

公开(公告)日：2020-05-12

申请号：US14904867

申请日：2013-08-07

Applicant: COVIDIEN LP

Inventor： Weijiang Ding

IPC: A61B18/14 ,  A61B17/28 ,  A61B17/29 ,  A61B18/00

Abstract: An end effector assembly includes first and second jaw members pivotable between spaced-apart and approximated positions. The first and second jaw members include first and second proximal flanges, respectively. A pivot pin couples the proximal flanges of the jaw members to one another. The pivot pin includes a body and a head. The body is coupled to the first proximal flange. The head defines a first ramped surface configured to slidably contact a second ramped surface of the second proximal flange. In the spaced-apart position of the jaw members, the first and second ramped surfaces are oppositely disposed such that a maximum clearance is defined between the first and second proximal flanges. In the approximated position of the jaw members, the first and second ramped surfaces are similarly disposed such that a minimum clearance is defined between the first and second proximal flanges.

公开(公告)号：USD737439S1

公开(公告)日：2015-08-25

申请号：US29481409

申请日：2014-02-05

Applicant: COVIDIEN LP

Designer： Weijiang Ding ,  Pu Liu ,  Yuanxun Li ,  Peixiong Yi ,  Peining Sun

公开(公告)号：US20220401144A1

公开(公告)日：2022-12-22

申请号：US17893411

申请日：2022-08-23

Applicant: Covidien LP

Inventor： Weijiang Ding ,  Yuanxun Li ,  Sarfraz Ahamed Syed ,  Mimi Ding ,  Mingfeng Xu ,  Pu Liu ,  Kai Liu ,  Michael B. Lyons

IPC: A61B18/14 ,  A61B17/295

Abstract: A forceps includes a first portion and a second portion. The first portion includes a shaft, an end effector assembly disposed at a distal end of the shaft, and a drive assembly including a drive bar. The end effector assembly includes jaw members movable between spaced-apart and approximated positions. The drive bar is slidably disposed within the shaft and coupled to the end effector assembly such that translation of the drive bar relative to the shaft moves the jaw members between the spaced-apart and approximated positions. The second portion includes a housing (or portion thereof) and a handle assembly including a movable handle that is coupled to the housing and movable relative thereto between first and second positions. The first and second portions are releasably couplable with one another to operably couple the movable handle with the drive bar such that moving the movable handle actuates the jaw members.

公开(公告)号：US11406407B2

公开(公告)日：2022-08-09

申请号：US16926694

申请日：2020-07-11

Applicant: Covidien LP

Inventor： Weijiang Ding ,  Weisheng Lu ,  Syed Sarfraz Ahamed

IPC: A61B17/28 ,  A61B17/00 ,  A61B17/29 ,  A61B18/00 ,  A61B18/14 ,  A61B34/30

Abstract: An electrosurgical forceps includes a first elongated shaft member including a first handle member and a first jaw member having a first tissue contacting surface, and a second elongated shaft member including a second handle member and a second jaw member having a second tissue contacting surface. At least one of the first and second handle members is movable relative to the other between an open position, a first approximated position where the first and second tissue contacting surfaces are diametrically opposed to one another, and a second approximated position where the first and second tissue contacting surfaces are laterally offset from one another. A handle connector assembly is selectively engageable with the second handle member and is configured to selectively communicate electrosurgical energy between the first and second tissue contacting surfaces when the first and second handle members are disposed in the first approximated position.

公开(公告)号：US20220175357A1

公开(公告)日：2022-06-09

申请号：US17603640

申请日：2019-05-13

Applicant: Covidien LP

Inventor： Weijiang Ding ,  Yuanxun Li ,  Ming Cao

IPC: A61B17/00 ,  A61N7/02

Abstract: A high intensity focused ultrasound (HIFU) system (100,400) for selectively sealing a vessel network (360) in a liver includes a generator (110,410,420) configured to generate and supply electric power, and an acoustic assembly (200,130,150) configured to receive the supplied electric power. The acoustic assembly (200,130,150) includes a first transducer (310,430) configured to generate vibrations having a first frequency, and a second transducer (320,440) configured to generate vibrations having a second frequency. When a first focal point of the generated vibrations having the first frequency and a second focal point of the generated vibrations having the second frequency are aligned within a focused region (350), a group of vessels (360) at the focused region (350) are selectively sealed.

公开(公告)号：US20220133396A1

公开(公告)日：2022-05-05

申请号：US17575746

申请日：2022-01-14

Applicant: Covidien LP

Inventor： Weijiang Ding ,  Jianjiang Chen ,  Daniel A. Joseph ,  Kai Liu ,  William H. Nau, JR. ,  Arlen K. Ward ,  William R. Whitney

IPC: A61B18/14 ,  A61B18/00

Abstract: An end effector assembly includes a first jaw member having a first tissue contact surface and a second jaw member having a second tissue contact surface. The second jaw member is pivotally coupled to the first jaw member. The tissue contact surfaces may include raised steps that define an exhaust channel. A longitudinally extending knife slot may be defined in one or both of the tissue contact surfaces. One or more exhaust slots, which may be defined in one or both of the tissue contact surfaces, are in communication with the knife slot. The exhaust channel and the exhaust slots direct fluid away from the jaw members to minimize thermal damage risks associated with tissue sealing.

公开(公告)号：US11224478B2

公开(公告)日：2022-01-18

申请号：US15742717

申请日：2015-07-17

Applicant: COVIDIEN LP

Inventor： Weijiang Ding ,  Jianjiang Chen ,  Daniel A. Joseph ,  Kai Liu ,  William H. Nau, Jr. ,  Arlen K. Ward ,  William Ross Whitney

IPC: A61B18/14 ,  A61B18/00

Abstract: An end effector assembly (114) includes a first jaw member (114a) having a first tissue contact surface (122) and a second jaw member (114b) having a second tissue contact surface (122). The second jaw member (114b) is pivotally coupled to the first jaw member (114a). The tissue contact surfaces (122) may include raised steps (122b) that define an exhaust channel (124). A longitudinally extending knife slot (214) may be defined in one or both of the tissue contact surfaces (122). One or more exhaust slots (216), which may be defined in one or both of the tissue contact surfaces (122), are in communication with the knife slot (214). The exhaust channel (124) and the exhaust slots (216) direct fluid away from the jaw members (114a, 114b) to minimize thermal damage risks associated with tissue sealing.

公开(公告)号：US20210121189A1

公开(公告)日：2021-04-29

申请号：US17122051

申请日：2020-12-15

Applicant: Covidien LP

Inventor： Weijiang Ding ,  Mingfeng Xu

IPC: A61B17/29

Abstract: An articulation assembly for use with a surgical instrument is provided. The articulation assembly includes a plurality of joints, a plurality of cables, and a first drive member. Each joint defines a plurality of openings extending longitudinally therethrough, a central opening extending longitudinally therethrough, a pair of projections extending from a first surface, and a pair of grooves extending at least partially through a second surface. Each groove of at least one joint is configured to engage one projection of the pair of projections from an adjacent joint. Each cable extends through one opening of the plurality of openings of each joint. The first drive member extends through the central opening of each joint.

公开(公告)号：US10987159B2

公开(公告)日：2021-04-27

申请号：US15752957

申请日：2015-08-26

Applicant: COVIDIEN LP

Inventor： Weijiang Ding ,  Kai Liu ,  Jianjiang Chen

IPC: A61B18/14 ,  A61B18/00

Abstract: An end effector assembly (100, 200) of an electrosurgical forceps (10, 10′) includes first and second jaw members (110, 120, 210, 220). At least one of the jaw members (110, 120, 210, 220) is movable relative to the other between a spaced-apart position and an approximated position. At least one of the jaw members (110, 120, 210, 220) includes an electrically-conductive inner member (115, 125) defining an outer surface, a first electrically-insulative layer (116, 126) disposed on a portion of the outer surface of the electrically-conductive inner member (115, 125), a second electrically-insulative layer (117, 127) disposed on another portion of the outer surface of the electrically-conductive inner member (115, 125), and an electrode (118, 128) disposed on the second electrically-insulative layer (117, 127) and electrically coupled to the electrically-conductive inner member (115, 125). The electrode (118, 128) defines a tissue-treating surface of the corresponding jaw member (110, 120, 210, 220). The first electrically-insulative layer (116, 126) has a thermal conductivity greater than that of the second electrically-insulative layer (117, 127).

公开(公告)号：US20200367920A1

公开(公告)日：2020-11-26

申请号：US16926694

申请日：2020-07-11

Applicant: Covidien LP

Inventor： Weijiang Ding ,  Weisheng Lu ,  Syed Sarfraz Ahamed

IPC: A61B17/28

Abstract: An electrosurgical forceps includes a first elongated shaft member including a first handle member and a first jaw member having a first tissue contacting surface, and a second elongated shaft member including a second handle member and a second jaw member having a second tissue contacting surface. At least one of the first and second handle members is movable relative to the other between an open position, a first approximated position where the first and second tissue contacting surfaces are diametrically opposed to one another, and a second approximated position where the first and second tissue contacting surfaces are laterally offset from one another. A handle connector assembly is selectively engageable with the second handle member and is configured to selectively communicate electrosurgical energy between the first and second tissue contacting surfaces when the first and second handle members are disposed in the first approximated position.