Pentax Corporation

Asahi Kogaku Kogyo Kabushiki Kaisha

Tomoko Iwasaki

Akira Sugiyama

Kenichi Ohara

Naoya Ouchi

Tadashi Kasai

Kikuo Iwasaka

Masanao Abe

Shinji Hayakawa

Minoru Matsushita

Hideo Nanba

A flexible tube for an endoscope is provided with a spirally-wound tube, a braided tube covering the spirally-wound tube, and a sheath provided on the braided tube. The sheath material is fused and coated on the braided tube to form the sheath. When the sheath material is fused and applied on the braided tube, the sheath material passes through interstices of the braided tube, at the positions facing the clearances between windings, to form a plurality of protruded portions which protruded inward with respect to the braided tube.

Flexible tube for endoscope

A flexible tube for an endoscope is provided with an outer tube member. A synthetic resin layer is formed on an outer circumferential surface of the outer tube member. A coating layer is further formed on the outer circumferential surface of the synthetic resin layer. The outer circumferential surface of the synthetic resin layer is provided with at least one groove or protrusion.

A flexible tube for an endoscope is provided with a tubular sheath. An outer circumferential surface of the sheath is provided with an indicator that indicates at least one of an orientation of the sheath about an axis thereof and axial length information. The indicator includes at least one striation extending in the axial direction of the sheath. The striation is formed to be perceptible by touch.

Growing community of inventors

Chiba-ken, Japan

Tomoko Iwasaki