| 摘要 |
A hemostatic closure for sealing a percutaneous puncture in a blood vessel. The puncture includes a tract leading to it from the skin of the being. The closure comprises a rigid, resorbable material anchor having a reinforcement strip therein, a compressed collagen plug, a thin filament connecting the anchor and the plug in a pulley-like arrangement, and a locking mechanism, The plug is deployed so that the anchor is pulled against the tissue contiguous with the puncture inside the artery and with the plug and the locking member within the puncture tract. Pulling on the filament moves the plug toward the anchor member to a puncture sealing position. The locking mechanism is arranged to be actuated to engage the filament in such a manner that the plug is held in the puncture sealing position. In one embodiment the locking mechanism comprises a compressible disk mounted on the filament. In another embodiment the locking mechanism comprises a notched passageway in the anchor and the filament comprises a portion having plural projections or teeth thereon adapted to slide into the notched passageway in one direction but resistant to sliding in the opposite direction. An optional spacer member may be provided interposed between the plug and the anchor to prevent the plug from entering the opening in the vessel.
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