| 摘要 |
A high frequency operation device comprises: a flexible sheath of an electric insulation member that is insertable into an operation device insertion channel in an endoscope; a high frequency knife mounted on the flexible sheath; and an operation section connected to the flexible sheath to project the high frequency knife from a leading end of the flexible sheath, wherein the high frequency knife comprises first and second electrode members incorporated in a telescopic manner; wherein the operation section comprises: first and second drive members respectively that moves the first and second electrode members; and a connecting member that links together the first and second drive members and removes linkage between the first and second drive members, and wherein the high frequency operation device comprises: a first stage regulation portion that regulates a projecting length of the second electrode member, formed at the flexible sheath; and a second stage regulation portion that regulates a projecting length of the first electrode member from a leading end of the second electrode member, formed at the second electrode member. |
