Cooled chokes for ablation systems and methods of use

    公开(公告)号:US11730537B2

    公开(公告)日:2023-08-22

    申请号:US16681255

    申请日:2019-11-12

    IPC分类号: A61B18/18 A61B18/00

    摘要: An antenna system for tissue ablation includes an energy transmission member, an antenna body coupled to the energy transmission member, a fluid source, and a choke member comprising an integrally formed choke body and choke connector electrically coupled to the energy transmission member by the choke connector. The choke body defines an outermost portion of the choke member. The choke body has an axial length and the choke connector extends along a majority of the length of the choke body and contacts the choke body along the majority of the length. The choke connector is in direct contact with a fluid from the fluid source. The choke connector is disposed between the choke body and the energy transmission member. The choke connector forms a delivery path for the fluid between the choke body and the energy transmission member. The choke connector and the choke body are a continuous wire mesh.

    DUAL ANTENNA ASSEMBLY WITH USER-CONTROLLED PHASE SHIFTING

    公开(公告)号:US20170304000A1

    公开(公告)日:2017-10-26

    申请号:US15647457

    申请日:2017-07-12

    申请人: COVIDIEN LP

    发明人: JOSEPH D. BRANNAN

    IPC分类号: A61B18/18 A61N5/04 A61B18/00

    摘要: An electrosurgical ablation system includes an energy source adapted to supply energy to an energy delivery device. The energy delivery device includes a handle assembly configured to couple a pair of antennas extending from a distal end thereof to the energy source for application of energy to tissue. A power splitting device is operatively associated with the handle assembly and has an input adapted to connect to the energy source and a pair of output channels operably coupled to the respective pair of antennas. A phase shifter is operatively associated with the handle assembly and is operably coupled to the pair of output channels. The phase shifter is configured to selectively shift a phase relationship between the pair of output channels.