Patent ID: 7931670

Claim:
A tissue puncture system, comprising: a tissue puncture closure device for partial insertion into and sealing of an internal tissue wall puncture, the device comprising: a filament extending from a first end of the closure device to a second end of the closure device; an anchor for insertion through the tissue wall puncture, the anchor being attached to the filament at the second end of the closure device; a sealing plug slidingly attached to the filament and positioned adjacent to the anchor; a tamping member disposed adjacent to the sealing plug; a handle located at the first end of the closure device; and an automatic driving mechanism located within the handle that tamps the sealing plug utilizing force generated by withdrawal of the closure device from the internal tissue wall puncture to move the tamping member toward the sealing plug, the automatic driving mechanism including a gear; wherein the gear contacts the tamping member to move the tamping member, and at least a portion of the tamping member at least partially wraps around the gear.