| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rigid-endoscope oversheath which controls the flow rate so as to obtain the ejecting direction of fluid. <P>SOLUTION: The rigid-endoscope oversheath is structured as follows: a cleaning nozzle 20 is formed at a distal end surface 16 of a rigid-endoscope oversheath 10 mounted on a rigid endoscope. The cleaning nozzle 20 is connected with a flow path formed inside the oversheath 10 so that the fluid flowing through the flow path is ejected from an ejection port 19. The side surfaces 21, 22 of the cleaning nozzle 20 are made of relatively hard material, while the top surface 23 of the cleaning nozzle 20 is made of relatively soft material. When the flow rate of the fluid ejected from the ejection port 19 is increased, the top surface 23 of the ejection port 19 is widened upward and thus the ejecting direction of the fluid is changed. The flow rate is controlled to change the ejecting direction of the fluid. <P>COPYRIGHT: (C)2013,JPO&INPIT |
