| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a check valve assembly for an endoscope having a function of surely preventing a reverse flow inexpensively. <P>SOLUTION: In an adapter tube 16, one end of a tube 16a is connected to the endoscope and the another end is provided with a second connector 42. The second connector 42 is connected to a connector 49 of a fluid supply source. The second connector 42 is composed of a check valve 50 and a storage case 51. The check valve 50 is composed of a cylindrical valve seat member 52 having the tip blocked and having a fluid passage hole 54 penetrating the peripheral wall and an elastic body 53. The valve seat member 52 having a small-diameter portion 57 on which the fluid passage hole 54 is located at the tip side, having a large-diameter portion 58 formed on the base end side of the small-diameter portion 57. The elastic body 53 is made up of a cylindrical elastic material having the thickness uniformly formed, and covers the small-diameter portion 57 and the large-diameter portion 58 of the valve seat member 52. The elastic body 53 is inserted and held between holding protrusions 55e formed in the storage case 51 and the large-diameter portion 58. <P>COPYRIGHT: (C)2012,JPO&INPIT |
