公开(公告)号：US09724158B2

公开(公告)日：2017-08-08

申请号：US14519459

申请日：2014-10-21

Applicant: COVIDIEN LP

Inventor： Anthony C. Lee ,  Kenlyn S. Bonn

IPC: A61B18/18 ,  A61B18/00

CPC classification number: A61B18/1815 ,  A61B2018/00023 ,  A61B2018/00077 ,  A61B2018/00214 ,  A61B2018/00577 ,  A61B2018/1861

Abstract: A microwave ablation system includes a power source. A microwave antenna is adapted to connect to the power source via a coaxial cable that includes inner and outer conductors having a compressible dielectric operably disposed therebetween. The inner conductor in operative communication with a radiating section associated with the microwave antenna. The outer conductor includes a distal end transitionable with respect to each of the inner conductor, compressible dielectric and radiating section from an initial condition wherein the distal end has a first diameter to a subsequent condition wherein the distal end has second diameter. Transition of the distal end from the initial condition to the subsequent condition enhances the delivery of microwave energy from the power source to the inner conductor and radiating section such that a desired effect to tissue is achieved.

公开(公告)号：US09693823B2

公开(公告)日：2017-07-04

申请号：US14806080

申请日：2015-07-22

Applicant: COVIDIEN LP

Inventor： Anthony C. Lee ,  Kenlyn S. Bonn ,  Mani N. Prakash ,  Francesca Rossetto

IPC: A61B18/18 ,  A61B18/00

CPC classification number: A61B18/1815 ,  A61B2018/00214 ,  A61B2018/00267 ,  A61B2018/00577 ,  A61B2018/00601 ,  A61B2018/1861 ,  A61B2018/1869

Abstract: An ablation device includes an antenna assembly having a radiating portion configured to deliver energy from a power source to tissue of a patient. The radiating portion has an outer conductor and an inner conductor extending therethrough. The inner conductor is disposed within the outer conductor and defines a longitudinal axis. One of the inner conductor and the outer conductor is movable relative to the other to cause at least a portion of the outer conductor to expand radially relative to the longitudinal axis.

公开(公告)号：US09041616B2

公开(公告)日：2015-05-26

申请号：US14172177

申请日：2014-02-04

Applicant: COVIDIEN LP

Inventor： Mani N. Prakash ,  Francesca Rossetto ,  Anthony C. Lee ,  Steven Kim ,  Ted Su ,  Jonathan L. Glassman

IPC: H01Q9/04 ,  A61B18/18

CPC classification number: A61B18/1815 ,  A61B18/18 ,  A61B2018/00077 ,  A61B2018/00083 ,  A61B2018/00136 ,  A61B2018/00142 ,  A61B2018/00178 ,  A61B2018/00577 ,  A61B2018/1823 ,  A61B2018/1838 ,  A61B2018/1853 ,  A61B2018/1869 ,  A61B2018/1892 ,  Y10T29/49005 ,  Y10T29/49007 ,  Y10T29/49016 ,  Y10T29/49018

Abstract: Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.