| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrode needle of a puncture type electro cautery used in the surgery for electro coagulation and excision using a laparoscope along with further improvements in the insulability and peeling strength and provide its production method. <P>SOLUTION: The electrode needle of the puncture type electro cautery is used in the surgery for the coagulation and excision of the affected tissue by the electric energy under the laparoscope and its production method is provided. The production method comprises the first step in which an electrode connection part 10-40 mm long is left from the one end of a rod like metal material with an outer diameter of 4-8 mm and a length of 110-440 mm and the parts other than the electrode connection part are ground or worked by the electrolysis to obtain an integrated link member of the electrode connection part with the outer diameter of 4-8 mm and a length of 10-40 mm and a long needle part with an outer diameter of 1-3 mm and a length of 100-400 mm coaxial with it, the second step of covering the long needle part with the DLC and the third step in which a chip part within 10 mm from the tip of the long needle is worked in a shape of a hook associated with the removal of the part with the DLC. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
