High-frequency snare for endoscope

Surgery – Instruments – Electrical application

Reexamination Certificate

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C029S868000

Reexamination Certificate

active

07458973

ABSTRACT:
A high-frequency snare for an endoscope includes an electrically insulating sheath, an operation wire slidably inserted through the sheath, a plurality of resilient twisted wires. Proximal ends of the plurality of twisted wires are connected to the distal end of the operation wire. Distal ends of the plurality of twisted wires are deposited with each other within an atmosphere of inactive gas. A proximal end side of the deposited ends of the plurality of wires being connected together with a metallic connecting member. When the operation wire is operated to withdraw at least proximal side portions of the plurality of twisted wires, the twisted wires are tucked. The plurality of twisted wires are expanded to form a loop with resilience thereof when the plurality of twisted wires are protruded from the sheath.

REFERENCES:
patent: 3272962 (1966-09-01), Mauskapf
patent: 6224611 (2001-05-01), Ouchi
patent: 6245078 (2001-06-01), Ouchi
patent: 6299612 (2001-10-01), Ouchi
patent: 2005/0131424 (2005-06-01), Ouchi
patent: 5-54343 (1993-08-01), None
patent: 10-165406 (1998-06-01), None
patent: 2000-83963 (2000-03-01), None
patent: 2002-153484 (2002-05-01), None
English language Abstract of JP 5-54343.
English language Abstract of JP 10-165406.
English language Abstract of JP 2000-83963.
U.S. Appl. No. 11/218,778 to Ouchi.

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