US 12,349,968 B2
Tissue ablation device with broadband antenna
Oleg Mosesov, Maple Grove, MN (US); Andrew Kevin Zachman, St. Michael, MN (US); Ankit Gajurel, Minneapolis, MN (US); Charles Senness, Hopkins, MN (US); Daniel T. Kollman, Andover, MN (US); Szymon Rzeszowski, Minneapolis, MN (US); and Winston Tan, Plymouth, MN (US)
Assigned to Biocompatibles UK Limited, Camberley (GB)
Appl. No. 16/980,833
Filed by Biocompatibles UK Limited, Camberley (GB)
PCT Filed Jan. 29, 2019, PCT No. PCT/IB2019/050716
§ 371(c)(1), (2) Date Sep. 14, 2020,
PCT Pub. No. WO2019/150258, PCT Pub. Date Aug. 8, 2019.
Claims priority of provisional application 62/625,433, filed on Feb. 2, 2018.
Prior Publication US 2021/0153936 A1, May 27, 2021
Int. Cl. A61B 18/18 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1815 (2013.01) [A61B 2018/00023 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/1846 (2013.01); A61B 2018/1869 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A microwave ablation probe comprising
a feedline having an inner conductor, an outer conductor and a dielectric disposed there- between; and
an antenna, the antenna including,
a helical arm, a distal end of the helical arm being electrically connected to the outer conductor of the feedline at a junction point, the helical arm co-axially disposed about the feedline and extending in a proximal direction from the junction; and
a linear arm, the linear arm being electrically connected to the inner conductor of the feedline, the linear arm extending distally from a distal end of the feedline, the linear arm further including
a first portion surrounded by a dielectric, and
a second portion free of dielectric, the second portion being distal to the first portion;
wherein the linear arm is the distal most portion of the antenna.