US 12,133,679 B2
High-efficiency, directional microwave ablation antenna
Punit Prakash, Manhattan, KS (US); Brogan McWilliams, Seattle, WA (US); and Emily Frederick, Shawnee, KS (US)
Assigned to Kansas State University Research Foundation, Manhattan, KS (US)
Filed by Kansas State University Research Foundation, Manhattan, KS (US)
Filed on Jul. 12, 2022, as Appl. No. 17/862,787.
Application 17/862,787 is a continuation of application No. 15/532,449, granted, now 11,419,677, previously published as PCT/US2015/063210, filed on Dec. 1, 2015.
Claims priority of provisional application 62/086,507, filed on Dec. 2, 2014.
Prior Publication US 2022/0354574 A1, Nov. 10, 2022
Int. Cl. A61B 18/18 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1815 (2013.01) [A61B 17/00234 (2013.01); A61B 2017/00318 (2013.01); A61B 2018/00023 (2013.01); A61B 2018/00488 (2013.01); A61B 2018/00494 (2013.01); A61B 2018/005 (2013.01); A61B 2018/00511 (2013.01); A61B 2018/00517 (2013.01); A61B 2018/00541 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00809 (2013.01); A61B 2018/00904 (2013.01); A61B 2018/00982 (2013.01); A61B 2018/1838 (2013.01); A61B 2018/1846 (2013.01); A61B 2018/1853 (2013.01); A61B 2018/1861 (2013.01); A61B 2018/1869 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An electrosurgical device for tissue ablation comprising:
a transmission line for transmitting an electromagnetic signal from a signal generator, the transmission line comprising a coaxial cable having an inner conductor, an outer conductor, and a dielectric material disposed therebetween;
an antenna coupled to the transmission line and configured for emitting electromagnetic energy therefrom sufficiently strong to cause tissue ablation;
an outer tubular body and an inner tubular member, the transmission line, antenna, and inner tubular member being located within the outer tubular body; and
a reflector comprised of a conductive material laterally spaced from the antenna and secured to or formed from the inner tubular member, the reflector being configured to reflect a portion of the electromagnetic energy emitted from the antenna and thereby provide a directional pattern of delivery of the electromagnetic energy to a target tissue,
the reflector having a cross-sectional configuration that is different than a cross-sectional configuration of a portion of the inner tubular member at the location that the reflector is secured to or formed from the inner tubular member, wherein the inner tubular member comprises a curvilinear cross-sectional configuration and the reflector has a rectilinear cross-sectional configuration.