公开(公告)号：US12193733B2

公开(公告)日：2025-01-14

申请号：US18460756

申请日：2023-09-05

Applicant: Covidien LP

Inventor： William J. Dickhans ,  Jiagui Li ,  Zhiwei Lin

IPC: A61B18/18 ,  A61B18/00

Abstract: A microwave ablation antenna assembly including a coaxial cable terminating in a radiating section, a first tubular member circumscribing the coaxial cable and spaced therefrom to permit fluid flow therebetween, and a second tubular member circumscribing the first tubular member and spaced therefrom to permit fluid flow therebetween. The microwave ablation antenna assembly further includes a hub configured to receive the coaxial cable, first tubular member, and second tubular member, the hub including a fluid inflow chamber and a fluid outflow chamber and an integrated hub divider and hub cap separating the fluid inflow chamber from the fluid outflow chamber and prohibiting fluid flow between the inflow chamber and outflow chamber except via the spacing between the coaxial cable and the first tubular member and between the first tubular member and the second tubular member.

公开(公告)号：US20250143787A1

公开(公告)日：2025-05-08

申请号：US19013287

申请日：2025-01-08

Applicant: Covidien LP

Inventor： William J. Dickhans ,  Jiagui Li ,  Zhiwei Lin

IPC: A61B18/18 ,  A61B18/00

Abstract: A microwave ablation antenna assembly including a coaxial cable terminating in a radiating section, a first tubular member circumscribing the coaxial cable and spaced therefrom to permit fluid flow therebetween, and a second tubular member circumscribing the first tubular member and spaced therefrom to permit fluid flow therebetween. The microwave ablation antenna assembly further includes a hub configured to receive the coaxial cable, first tubular member, and second tubular member, the hub including a fluid inflow chamber and a fluid outflow chamber and an integrated hub divider and hub cap separating the fluid inflow chamber from the fluid outflow chamber and prohibiting fluid flow between the inflow chamber and outflow chamber except via the spacing between the coaxial cable and the first tubular member and between the first tubular member and the second tubular member.

公开(公告)号：US11759257B2

公开(公告)日：2023-09-19

申请号：US16493054

申请日：2017-03-13

Applicant: Covidien LP

Inventor： Jiagui Li ,  William J. Dickhans ,  Zhiwei Lin

IPC: A61B18/00 ,  A61B18/18

CPC classification number: A61B18/1815 ,  A61B2018/00023 ,  A61B2018/00577

Abstract: A microwave ablation antenna assembly (10) including a coaxial cable (14) terminating in a radiating section (16), a first tubular member (18) circumscribing the coaxial cable (14) and spaced therefrom to permit fluid flow therebetween, and a second tubular member (20) circumscribing the first tubular member (18) and spaced therefrom to permit fluid flow therebetween. The microwave ablation antenna assembly (10) further includes a hub (26) configured to receive the coaxial cable (14), first tubular member (18), and second tubular member (20), the hub (26) including a fluid inflow chamber (36) and a fluid outflow chamber (38) and an integrated hub divider (40) and hub cap (28) separating the fluid inflow chamber (36) from the fluid outflow chamber (38) and prohibiting fluid flow between the inflow chamber (36) and outflow chamber (38) except via the spacing between the coaxial cable (14) and the first tubular member (18) and between the first tubular member (18) and the second tubular member (20).

公开(公告)号：US20200015891A1

公开(公告)日：2020-01-16

申请号：US16493054

申请日：2017-03-13

Applicant: Covidien LP

Inventor： Jiagui Li ,  William J. Dickhans ,  Zhiwei Lin

IPC: A61B18/18

Abstract: A microwave ablation antenna assembly (10) including a coaxial cable (14) terminating in a radiating section (16), a first tubular member (18) circumscribing the coaxial cable (14) and spaced therefrom to permit fluid flow therebetween, and a second tubular member (20) circumscribing the first tubular member (18) and spaced therefrom to permit fluid flow therebetween. The microwave ablation antenna assembly (10) further includes a hub (26) configured to receive the coaxial cable (14), first tubular member (18), and second tubular member (20), the hub (26) including a fluid inflow chamber (36) and a fluid outflow chamber (38) and an integrated hub divider (40) and hub cap (28) separating the fluid inflow chamber (36) from the fluid outflow chamber (38) and prohibiting fluid flow between the inflow chamber (36) and outflow chamber (38) except via the spacing between the coaxial cable (14) and the first tubular member (18) and between the first tubular member (18) and the second tubular member (20).

公开(公告)号：US09814844B2

公开(公告)日：2017-11-14

申请号：US14011414

申请日：2013-08-27

Applicant: COVIDIEN LP

Inventor： Rachit Ohri ,  Lan Pham ,  Phillip D. Blaskovich ,  Les Hull ,  Rupal Ayer ,  Stephen H. Wu ,  Clifford J. Herman ,  William H. Nau, Jr. ,  Francesca Rossetto ,  Allison Waller ,  Wenxing Huang ,  Paul DiCarlo ,  Mantao Xu ,  Xingyan Lu ,  Jiagui Li ,  Qinlin Gu ,  Harold M. Martins

IPC: A61M5/32 ,  A61B17/34 ,  A61B18/14 ,  A61M25/00 ,  A61B18/00

CPC classification number: A61M5/329 ,  A61B17/3421 ,  A61B17/3478 ,  A61B18/1477 ,  A61B18/1487 ,  A61B2017/3447 ,  A61B2018/00577 ,  A61B2018/143 ,  A61B2218/002 ,  A61M25/00 ,  A61M25/0097 ,  A61M2025/0037 ,  A61M2202/0007

Abstract: A drug-delivery cannula assembly includes a cannula housing adapted for receiving at least one obturator shaft of an obturator assembly therethrough, one or more cannulae, and a supply line coupled to the cannula housing. The cannula housing is adapted for receiving one or more obturator shafts of an obturator assembly therethrough. The one or more cannulae define a longitudinal axis and a passageway aligned with the longitudinal axis. The one or more cannulae each include a proximal end coupled to the cannula housing. The cannula housing is configured to fluidly-couple the one or more cannulae to a source of a drug delivery supply for supplying drugs via the supply line to the one or more cannulae.

公开(公告)号：US20230404666A1

公开(公告)日：2023-12-21

申请号：US18460756

申请日：2023-09-05

Applicant: Covidien LP

Inventor： William J. Dickhans ,  Jiagui Li ,  Zhiwei Lin

IPC: A61B18/18

CPC classification number: A61B18/1815 ,  A61B2018/00023

Abstract: A microwave ablation antenna assembly including a coaxial cable terminating in a radiating section, a first tubular member circumscribing the coaxial cable and spaced therefrom to permit fluid flow therebetween, and a second tubular member circumscribing the first tubular member and spaced therefrom to permit fluid flow therebetween. The microwave ablation antenna assembly further includes a hub configured to receive the coaxial cable, first tubular member, and second tubular member, the hub including a fluid inflow chamber and a fluid outflow chamber and an integrated hub divider and hub cap separating the fluid inflow chamber from the fluid outflow chamber and prohibiting fluid flow between the inflow chamber and outflow chamber except via the spacing between the coaxial cable and the first tubular member and between the first tubular member and the second tubular member.

公开(公告)号：US20210251688A1

公开(公告)日：2021-08-19

申请号：US16973660

申请日：2018-07-02

Applicant: Covidien LP

Inventor： William J. Dickhans ,  Jiagui Li ,  Zhiwei Lin ,  Darion R. Peterson ,  Wei Zhang

IPC: A61B18/18

Abstract: A microwave ablation device includes a cable assembly, a feedline, and a transmission line. The cable assembly is configured to connect to an energy source. The feedline is in electrical communication with the cable assembly and includes a first temperature sensor. The first temperature sensor is disposed at a first axial location along a length of the feedline and is configured to sense a temperature at the first axial location. The first temperature sensor extends along the length of the feedline. The transmission line extends from the first temperature sensor and is disposed parallel and in contact with an outer conductor of the feedline.