Importance

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Abstract

A closure device for sealing a percutaneous puncture in the wall of a blood vessel, duct, or lumen of a living being. The puncture has opening in the wall of the blood vessel, duct, or lumen, and a tract contiguous therewith. The closure device is arranged to be inserted into the puncture by an introducing instrument and basically comprises an anchor, a collagen plug, a flexible filament, and locking disk. The anchor is arranged to be brought into engagement with the interior tissue of the vessel, duct, or lumen contiguous with the opening, while the plug and the locking disk are located within the tract. The filament is arranged to be pulled to apply tension thereto. While tension is applied to the filament the locking disk and the plug are moved in the tract toward the anchor. The filament comprises an engagement loop, a first extending portion, and a second extending portion. The engagement loop is coupled to the locking disk. The first extending portion of the filament extends through the plug between the anchor and the locking disk. The second extending portion of the filament extends through the plug from the anchor to the locking disk and through the engagement loop. The second extending portion of the filament is arranged to be pulled in a proximal direction to apply tension to the filament and to cause the engagement loop to frictionally engage the second extending filament portion to hold the locking disk with respect to the anchor and with the plug interposed therebetween.

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First Claim