Patent ID: 7442187
Filing Date: 2008-10-28
Classification: A61M

Abstract:
1. A medical device, comprising: a catheter with a distal end and a proximal end and a catheter lumen extending therebetween; an outer needle with a distal end and a proximal end and an outer needle lumen extending therebetween, the outer needle being disposed in the catheter lumen, the outer needle slidable within the catheter; an inner needle with a distal end and a proximal end, the inner needle being disposed in the outer needle lumen, a therapeutic plug positioned on the distal end of the inner needle, the plug positioned between an outer wall of the inner needle and an inner wall of the outer needle, the outer wall of the inner needle being spaced apart from the inner wall of the outer needle; a needle control mechanism coupled to the proximal ends of the outer needle and the inner needle, the needle control mechanism configured to control the ejection and retraction of the outer and inner needles to deliver a therapeutic plug into a target tissue site; and a disk with an opening, axially aligned with and slidably positioned around the distal end of the inner needle with the inner needle projecting through the disk and the disk positioned proximal to the plug, the disk being located within the outer needle, the disk adapted to push the plug off the inner needle as the inner needle is retracted through the disk.