Retrieval basket device for an endoscope
AssigneePENTAX Corporation
InventorTeruo Ouchi
Life of this patent
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Abstract
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.
Claims11
A retrieval basket device comprising:
- a flexible sheath;
- a control wire which is inserted in said flexible sheath to be movable therein along an axis of said flexible sheath;
- and
- a basket constructed from a plurality of resilient wires and connected to a distal end of said control wire, wherein advancing and retreating movements of said control wire in said flexible sheath cause said basket to project out of, and retract into, a distal end of said flexible sheath whereby said basket bulges and narrows, respectively;
- said plurality of resilient wires being positioned at non-uniform angular intervals as viewed from the axial direction of said control wire, so that a first angular interval between two adjacent resilient wires of said plurality of resilient wires is greater than a second angular interval between any other two adjacent resilient wires of said plurality of resilient wires;
- wherein each of said two adjacent resilient wires positioned at said first angular interval is more flexible than any other resilient wires of said plurality of resilient wires.
A retrieval basket device comprising:
- a flexible sheath;
- a control wire which is inserted in said flexible sheath to be movable therein along an axis of said flexible sheath;
- and
- a basket constructed from a plurality of resilient wires and connected to a distal end of said control wire, wherein advancing and retreating movements of said control wire in said flexible sheath cause said basket to project out of, and retract into, a distal end of said flexible sheath whereby said basket bulges and narrows, respectively, said plurality of resilient wires being connected to a common end tip portion spaced from the distal end of said control wire, said plurality of resilient wires being positioned at non-uniform angular intervals as viewed from the axial direction of said control wire, so that a first angular interval between two adjacent resilient wires of said plurality of resilient wires is greater than a second angular interval between any other two adjacent resilient wires of said plurality of resilient wires.
Dependencies are inferred from the claim text.