Snare for endoscope
First Claim
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1. A snare for an endoscope comprising:
- a flexible sheath;
a control wire axially movably inserted in said flexible sheath; and
a snare wire connected to a distal end of said control wire, said snare wire being formed from an elastic wire;
wherein when said control wire is advanced axially, said snare wire projects from a distal end of said flexible sheath and expands in a loop shape by its own elasticity, whereas when said control wire is retracted axially, said snare wire is pulled into the distal end of said flexible sheath and thus contracted;
wherein a distal end surface of said flexible sheath is provided with a plurality of claw-shaped projections projecting forward in parallel to each other.
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Abstract
A snare for an endoscope has a snare wire formed from an elastic wire that is connected to the distal end of a control wire axially movably inserted in a flexible sheath. When the control wire is advanced axially, the snare wire projects from the distal end of the flexible sheath and expands in a loop shape by its own elasticity. When the control wire is retracted axially, the snare wire is pulled into the distal end of the flexible sheath and thus contracted. The distal end surface of the flexible sheath is provided with a plurality of claw-shaped projections projecting forward in parallel to each other.
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Citations
6 Claims
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1. A snare for an endoscope comprising:
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a flexible sheath;
a control wire axially movably inserted in said flexible sheath; and
a snare wire connected to a distal end of said control wire, said snare wire being formed from an elastic wire;
wherein when said control wire is advanced axially, said snare wire projects from a distal end of said flexible sheath and expands in a loop shape by its own elasticity, whereas when said control wire is retracted axially, said snare wire is pulled into the distal end of said flexible sheath and thus contracted;
wherein a distal end surface of said flexible sheath is provided with a plurality of claw-shaped projections projecting forward in parallel to each other. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification
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Current AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
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Original AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
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InventorsOuchi, Teruo
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Primary Examiner(s)Hirsch, Paul J.
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Application NumberUS09/453,897Time in Patent Office442 DaysField of Search606/113, 606/114, 606/110US Class Current606/113CPC Class CodesA61B 17/32056 Surgical snare instruments ...A61B 2017/320064 with tissue or sample retai...
