US 10,888,372 B2
Radiofrequency ablation electrode needle
Hui-Hsin Lu, New Taipei (TW); Meng-Han Tsai, Zhubei (TW); Kai-Wen Huang, Taipei (TW); Jo-Ping Lee, Tainan (TW); and Wen-Yang Chou, Zhubei (TW)
Assigned to INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW); and NATIONAL TAIWAN UNIVERSITY HOSPITAL, Taipei (TW)
Filed by Industrial Technology Research Institute, Hsinchu (TW); and National Taiwan University Hospital, Taipei (TW)
Filed on Dec. 14, 2016, as Appl. No. 15/378,852.
Claims priority of provisional application 62/339,955, filed on May 23, 2016.
Claims priority of provisional application 62/288,422, filed on Jan. 28, 2016.
Prior Publication US 2017/0215946 A1, Aug. 3, 2017
Int. Cl. A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1477 (2013.01) [A61B 18/14 (2013.01); A61B 2018/00083 (2013.01); A61B 2018/00107 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/1475 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A radiofrequency ablation electrode needle, comprising:
a needle body comprising at least one first segment and at least two second segments, wherein the at least one first segment and the at least two second segments are exposed on a surface of the needle body, wherein an impedance of the at least one first segment is smaller than an impedance of the at least two second segments, at least one of the at least one first segment is disposed between two immediately adjacent ones of the at least two second segments, and the radiofrequency ablation electrode needle is a monopolar electrode needle,
wherein the at least one first segment includes a plurality of first segments, and the plurality of first segments are electrically connected,
wherein two immediately adjacent ones of the plurality of first segments have different lengths.