发明名称 |
Flexible tube for an endoscope and electronic endoscope equipped with the flexible tube |
摘要 |
A flexible tube for an endoscope which has excellent insertion operability is disclosed. The flexible tube includes and an elongated flexible tubular body constructed from a core body having a hollow space and an outer cover which is provided over the outer periphery of the core body and formed into a laminated structure having a plurality of layers. The tubular body is formed with a plurality of easily bendable portions which are provided in a spaced apart manner along the longitudinal direction thereof, each of these easily bendable portion being adapted to bend locally with a smaller curvature radius when the flexible tube is bent in one direction. The average interval between the adjacent easily bendable portions is preferably in the range 50-400 mm. The easily bendable portions is formed by locally changing the flexural rigidity of the outer cover. For example, it is formed by changing the thickness of at least one layer of the laminated structure of the outer cover at a position corresponding to the easily bendable portion.
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申请公布号 |
US2002028984(A1) |
申请公布日期 |
2002.03.07 |
申请号 |
US20010943205 |
申请日期 |
2001.08.31 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA TOKYO, JAPAN |
发明人 |
HAYAKAWA SHINJI;SUGIYAMA AKIRA;TAKESHIGE MASARU;KASAI TADASHI |
分类号 |
F16L11/10;A61B1/00;A61B1/005;F16L11/12;(IPC1-7):A61B1/00 |
主分类号 |
F16L11/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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