Title:
SHEATH TUBE FOR SOFT ENDOSCOPE
Document Type and Number:
Japanese Patent JP2015164496
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a sheath tube for soft endoscope capable of keeping an observation region in a cleared state by smoothing a flow of perfusate, without increasing the sheath tube's outer diameter and greatly reducing the sheath tube's strength.SOLUTION: A sheath tube for soft endoscope is composed of: a long flexible sheath 1 provided with a lumen into which an insertion part of a soft endoscope is to be inserted; a sheath base 2 connected to an end part of the sheath 1 so as to communicate with the lumen; and a shaft 3 extending from the sheath base 2 to be a grip. The sheath 1 has a linear notch 12 in the axial direction except both end parts of the sheath 1, and a part of the notch 12 is formed so as to be a slit aperture part 13 extending in the axial direction. When the insertion part of the soft endoscope is inserted into the sheath 1, the notch 12 and a gap between an inner surface of the sheath 1 and the insertion part of the soft endoscope form a perfusion (discharge) passage for a fluid.
Inventors:
HAYASHI YASUYOSHI
TAKAGI HIDENORI
TAKAGI HIDENORI
Application Number:
JP2014040479A
Publication Date:
September 17, 2015
Filing Date:
March 03, 2014
Export Citation:
Assignee:
HAKKO CO
HAYASHI YASUYOSHI
HAYASHI YASUYOSHI
International Classes:
A61B1/00; A61M25/06
Domestic Patent References:
| JP2000201888A | 2000-07-25 | |||
| JP2007130374A | 2007-05-31 |
Foreign References:
| WO1997037716A1 | 1997-10-16 |
Other References:
林保良、外１２名: "持続灌流式ヒステロファイバースコピー用新しい軟性外套管の開発(第3報)", 日本産科婦人科内視鏡学会雑誌, vol. 29, no. 1, JPN6018004611, August 2013 (2013-08-01), pages 148 - 102, ISSN: 0003738041