| 摘要 |
A snare for an endoscope includes a control wire axially movably inserted in a flexible sheath. A snare loop formed by an elastic wire is connected to the distal end of the control wire. When the control wire is advanced, the snare loop projects from the distal end of the sheath and expands in a loop shape by its own elasticity. When the control wire is retracted, the snare loop is pulled into the sheath and folded. The snare loop is formed by two elastic wires between two mutually secured portions of the elastic wires, which are laid in parallel and in close contact with each other and secured together directly at two longitudinally spaced positions. The control wire is formed by an extending portion of at least one of the elastic wires that extends rearward from the mutually secured portion at the rear end of the snare loop.
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