Endoscope including a flexible tube

Details Endoscope including a flexible tube Endoscope including a flexible tube

2007-01-10

2010-11-09

Dvorak, Linda C (Department: 3739)

Surgery

Endoscope

Having flexible tube structure

C141S139000, C141S140000, C141S128000

Reexamination Certificate

active

07828724

ABSTRACT:
There is provided a flexible tube for an endoscope, including a framed structure unit having a plurality of joint members rotatably coupled to each other so that the framed structure unit is able to bend freely, each joint member having a form of a short cylinder, a reticulated tube that is reticulated with thread and is formed to cover the framed structure unit, and a flexible sheath that has flexibility and is formed to cover the reticulated tube. Further, a cross section of an outer surface of the flexible sheath has a circular shape, and a cross section of an outer surface of each joint member has a non-circular shape so that a wall thickness of the flexible sheath has a thicker part in a particular direction about an axis line of the flexible tube than another part of the wall thickness of the flexible sheath.

REFERENCES:
patent: 5271381 (1993-12-01), Ailinger et al.
patent: 7044906 (2006-05-01), Hosoi et al.
patent: 2002/0032371 (2002-03-01), Torii
patent: 2005/0020881 (2005-01-01), Hosoi et al.
patent: 2005/0061381 (2005-03-01), Hosoi et al.
patent: 9-24020 (1997-01-01), None
U.S. Appl. No. 11/565,145 to Hosoi et al., which was filed on Nov. 30, 2006.
English Language Abstract of JP 9-24020.

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