| http://www.w3.org/ns/prov#value | - eps reciprocatingly inserted into the channel in the endoscope and adapted to be opened when the forces protrudes from said one end of the channel; and an operation device reciprocatingly mounted on the operation unit and including means to pull at first only the forceps into the channel of the endoscope for a predetermined length to close the forceps, then move the endoscope as well as the forcep
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