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1. (WO2017057504) VISCOELASTIC COMPOSITION

Pub. No.:    WO/2017/057504    International Application No.:    PCT/JP2016/078704
Publication Date: Fri Apr 07 01:59:59 CEST 2017 International Filing Date: Thu Sep 29 01:59:59 CEST 2016
IPC: A61L 31/00
Applicants: JICHI MEDICAL UNIVERSITY
学校法人自治医科大学
OTSUKA PHARMACEUTICAL FACTORY, INC.
株式会社大塚製薬工場
Inventors: YANO Tomonori
矢野 智則
OHHATA Atsushi
大畑 淳
GOTO Toshihiro
後藤 敏裕
HIRAKI Yuji
平木 勇次
Title: VISCOELASTIC COMPOSITION
Abstract:
The purpose of the present invention is to provide: a viscoelastic composition that has excellent manipulability and is suitable for uses in which, when an opaque dark liquid accumulates inside a tube and obstructs the field of view of an endoscope, the liquid is pushed away, securing the field of view of the endoscope; and a method for securing the field of view of an endoscope which involves using the viscoelastic composition. The viscoelastic composition for securing the field of view of an endoscope contains water and a substance exhibiting viscoelastic properties, preferably has a hardness of 550 N/m2 or less, a viscosity (25°C) of 200–2,000 mPa·s, a loss tangent of 0.6 or less, and more preferably, an electrical conductivity of 250 µS/cm or less. The method for securing the field of view of an endoscope involves feeding the viscoelastic composition from the proximal part of the endoscope, through a channel, into the distal part of the endoscope.