Search International and National Patent Collections

1. (WO2018120982) DOUBLE-LAYERED DRAINAGE TUBE

Pub. No.:    WO/2018/120982    International Application No.:    PCT/CN2017/105627
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Oct 12 01:59:59 CEST 2017
IPC: A61M 25/00
Applicants: INNOVEX MEDICAL CO., LTD.
上海英诺伟医疗器械有限公司
Inventors: ZHENG, Zhongwei
郑忠伟
GONG, Biao
龚彪
YUAN, Qing
袁庆
WANG, Pan
王攀
YAN, Hang
严航
Title: DOUBLE-LAYERED DRAINAGE TUBE
Abstract:
A double-layered drainage tube (1), composed of an inner layer (11) and an outer layer (12) closely attached to each other, wherein the inner layer (11) is made of a hydrophobic material, and the outer layer (12) is made of a human biocompatible material. It can be ensured that liquids are not linked to an inner wall, thereby preventing bile adhesion from causing drainage tube clogging, and an outer wall thereof is soft and elastic and has a smooth surface, and has a good compatibility with body tissues without causing inflammation. Moreover, in the case where there is no middle layer of a stainless steel wire, the diameter and cost of an outer tube are reduced and the insertion difficulty is reduced, and the inner diameter of the drainage tube (1) is increased, and the effective drainage cross-sectional area of the drainage tube is increased.