| 摘要 |
Centerboard entering vessel opening spreads it to a slit. Needle pairs in slots across centerboard width are at about 2 mm intervals inside vessel. Pushing a wedge or bridge wire between pairs spreads needle noses about 1 mm on either side of free edge of slit. Suture loop ends are attached to each pair. An outboard has legs on either side of centerboard with a foot on each leg that stands on either side of slit outside vessel. Needle nose housings in each foot are directly opposite needle noses. Operator turning a screw pushes needle noses through vessel wall overcoming resistance in calcified vessels and housings hold needle noses by detents. Removing device from body brings suture ends outside with suture loops across slit in ideal 2×2 pattern. Alternative configurations provide means of joining and cutting suture ends, with preformed knots slid to opening or clamping ends together with a clip.
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