Koji ONISHI,Koji MIYAKE,Norichika FUKUSHIMA,Masaru YUASA
申请号：
US15875707
公开号：
US20180153536A1
申请日:
2018.01.19
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A treatment instrument for an endoscope is equipped with a sheath and a balloon which is provided at the sheath, the balloon being configured to be expandable to an unfolded inflated shape from a folded initial shape by supplying a fluid, the balloon having a first region and a second region provided at both end portions in a longitudinal direction, and an intermediate section provided between the first region and the second region. In the initial shape of the balloon, an amount of residual strain of the intermediate section is larger than the amount of residual strain of the first region and the amount of residual strain of the second region. When an internal pressure of the balloon has a first internal pressure value, the first region and the second region are unfolded to be faster than the intermediate section, thereby having a greater diameter than the intermediate section.
