Wire loop type instrument for endoscope and method of producing

Details Wire loop type instrument for endoscope and method of producing Wire loop type instrument for endoscope and method of producing

1998-07-29

1999-09-07

Thaler, Michael H.

Surgery

Instruments

Means for removing tonsils, adenoids or polyps

606 47, A61B 1732

Patent

active

059479795

ABSTRACT:
A wire loop type instrument for an endoscope that uses an elastic wire formed from a stranded wire bent into a U-shape and looped at the rear of the U-shaped bent portion. Each strand of the stranded wire has a non-circular cross-sectional configuration in which the strand is more resistant to bending in other directions than in a direction toward the center of the elastic wire. The stranded wire is formed by twisting together a plurality of strands each having a circular cross-section. The stranded wire is passed through a die with a hole having a smaller diameter than that of the stranded wire, thereby compression-deforming each strand into a non-circular cross-sectional configuration. A composite stranded wire may be used as the elastic wire, which is formed by twisting together a plurality of stranded wires each formed from a plurality of strands twisted together.

REFERENCES:
patent: 4633871 (1987-01-01), Shinozuka
patent: 5752961 (1998-05-01), Hill
Copy of an English Language Abstract of JP No. 5-176941.

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