Bendable portion control mechanism of an endoscope

Surgery – Endoscope – Having flexible tube structure

Reexamination Certificate

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Details

C148S198000

Reexamination Certificate

active

07846089

ABSTRACT:
A bendable portion control mechanism of an endoscope including a control portion and an insertion portion, includes two manually-rotatable control knobs, one of which being provided on top of the other and disposed coaxially with each other, for bending the bendable portion in two orthogonal directions, each of the control knobs including a water-sealed internal space; and two bent state holding mechanisms, provided in the two water-sealed internal spaces, respectively, for holding a bent state of the bendable portion in the two orthogonal directions by exerting frictional resistance on rotating operations of the two control knobs. The two control knobs detach from and attach to the control portion without interfering with the two bent state holding mechanisms so that it is possible to adjust operational characteristics of each of the two bent state holding mechanisms upon detaching the two control knobs, respectively.

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patent: 5762067 (1998-06-01), Dunham et al.
patent: 2001/0034472 (2001-10-01), Fujii et al.
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English Language Abstract of JP 9-98942.
English Language Abstract of JP 6-327613.
English Language Abstract of JP 10-286220.
English Language Abstract of JP 11-047082.
U.S. Appl. No. 11/737,291, to Maruyama, filed Apr. 19, 2007.
U.S. Appl. No. 11/737,331, to Maruyama, filed Apr. 19, 2007.

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