| 摘要 |
A catheter valve (10) including a housing (12) engaging at least a portion of a tubular member (14) is provided. The tubular member (14) having distal (16) and proximal (18) open ends defining a flow-through passage (20) therebetween, the tubular member (14) further having a proximal portion (22) of a deformable and therefore twistable structure and a distal portion (24) of a more rigid structure, the proximal portion (22) being partially and circumferencially attached to an inner surface of the housing (12), wherein dimensions of the housing (12), of the proximal portion (22) and of the distal portion (24) are selected such that when the distal portion (24) is rotated, the proximal portion (22) is twisted so as to block passage of fluid through the tubular member (14) and therefore through the catheter valve (10) and the distal portion (24) is secured by the housing (12) so as to prevent self untwisting of the proximal portion (22).
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