US 12,419,679 B2
Plasma surgical electrode and instrument
Chengdong He, Taizhou (CN); Xin Yue, Taizhou (CN); Zhengguo Cao, Taizhou (CN); and Zejun Li, Taizhou (CN)
Assigned to BANGSHI MEDICAL TECHNOLOGY CO. , LTD., Taizhou (CN)
Appl. No. 18/841,695
Filed by BANGSHI MEDICAL TECHNOLOGY CO., LTD., Taizhou (CN)
PCT Filed Jan. 19, 2022, PCT No. PCT/CN2022/072720
§ 371(c)(1), (2) Date Aug. 27, 2024,
PCT Pub. No. WO2023/060801, PCT Pub. Date Apr. 20, 2023.
Claims priority of application No. 202111203316.7 (CN), filed on Oct. 15, 2021.
Prior Publication US 2025/0107838 A1, Apr. 3, 2025
Int. Cl. A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/14 (2013.01) [A61B 2018/00077 (2013.01); A61B 2018/00083 (2013.01); A61B 2018/00178 (2013.01); A61B 2018/1407 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A plasma surgical electrode, comprising an electrode head, an electrode stem, and an electrode interface that are connected in sequence, wherein the electrode stem is in a single-tube form, comprising a conductive inner layer, an insulating inner layer, a conductive outer layer, and an insulating outer layer that are sleeved in sequence from inside to outside; the conductive inner layer is electrically connected to a working electrode of the electrode head and the electrode interface; and the conductive outer layer is electrically connected to a loop electrode of the electrode head and the electrode interface;
wherein the conductive outer layer comprises a crimping tube, a connecting tube, and a supporting tube; the crimping tube comprises a first end crimped to the electrode head and a second end with an inner side connected to the connecting tube; an inner side of the connecting tube is connected to the supporting tube; the supporting tube is electrically connected to the electrode interface, wherein the conductive outer layer is in a reduced-diameter shape;
wherein the electrode head comprises a first electrode tube and a second electrode tube that are arranged side by side to form the loop electrode;
a first end of the first electrode tube and a first end of the second electrode tube are in contact with each other and connected to the conductive outer layer;
a second end of the first electrode tube and a second end of the second electrode tube are away from each other;
the first electrode tube and the second electrode tube each are provided therein with a first insulating layer and an electrode wire in sequence, wherein an end of the first insulating layer adjacent to the working electrode extends out of the corresponding electrode tube; and a second insulating layer is provided between a section of the first insulating layer extending out of the corresponding electrode tube and the corresponding electrode wire; and
a first end of each of two electrode wires is electrically connected to the conductive inner layer, while second ends of the two electrode wires extend out of the corresponding electrode tubes and are connected to each other to form the working electrode; the working electrode and the loop electrode are isolated through the first insulating layer.