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FLEXIBLE TUBE FOR ENDOSCOPE AND METHOD FOR MANUFACTURING THE SAME
专利权人:
发明人:
Shinya ABE,Nobuharu TAKAHASHI,Shozo IYAMA
申请号:
US14667208
公开号:
US20150272424A1
申请日:
2015.03.24
申请国别(地区):
US
年份:
2015
代理人:
摘要:
A flexible tube for an endoscope includes a flexible tube base, an outer coating layer including a soft resin layer and a hard resin layer, a ratio changing portion, and a tapered portion. In the ratio changing portion, a percentage of a thickness of the hard resin layer decreases and a percentage of a thickness of the soft resin layer increases toward a distal side from a proximal side of the base. In the tapered portion, a ratio between the thickness of the hard resin layer and the thickness of the soft resin layer is maintained, which ratio is the same as that at a position in the ratio changing portion where the percentage of the thickness of the hard resin layer is a lower limit. In the tapered position, an outer diameter of the outer coating layer decreases toward a distal end of the flexible tube base.
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