Retrieval basket device for an endoscope
First Claim
Patent Images
1. 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.
2 Assignments
0 Petitions
Accused Products
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.
34 Citations
11 Claims
-
1. 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.- View Dependent Claims (2, 3, 4, 5)
-
-
6. 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. - View Dependent Claims (7, 8, 9, 10, 11)
-
Specification