| 摘要 |
2120947 9306877 PCTABS00021 An easy operating, durable closure device (2) for controlling the closure of a passageway in for example valves and the like used in medical applications. The device includes a cam surface (3) arranged about the circumference of a resilient tubing member (22). Rotation of the cam controls the radial position of a compression member that compresses the tubing member to effect closure. Such a closure device, or a two-part rotary closure device in general, is constructed to receive an acessory component such as a syringe, the rotary connecting movement of which automatically opens the closure device. The device may be used as a torquegeable handle for a guidewire gripped in the passage. A large scale version of the device is joined to an introducer sheath, sized to pass an introducer catheter for e.g., a Green field filter, or to close upon a guidewire to prevent backflow of blood.
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