| 摘要 |
A retrieval basket device includes a flexible sheath, a control wire which is inserted in the flexible sheath to be movable therein along an axis of the flexible sheath, and a basket constructed from a plurality of resilient wires and connected to a distal end of the control wire, wherein advancing and retreating movements of the control wire in the flexible sheath cause the basket to project out of, and retract into, a distal end of the flexible sheath whereby the basket bulges and narrows, respectively. The plurality of resilient wires are positioned at non-uniform angular intervals as viewed from the axial direction of the control wire.
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