| 摘要 |
A surgical device and method are disclosed for closing the sternum following a median sternotomy. Instead of using stainless steel wire or a flat steel band, a strand of flexible suture material is used which is compressible in its radial dimension, but which resists compression and seeks to return to its full diameter in an elastic manner when radially compressed. Despite its radial compressibility, the strand must also be strong and relatively inelastic in its longitudinal dimension. This combination of traits can be provided by a hollow tubular shape, a foam-type or other compressible outer layer surrounding an inelastic core, or other suitable design. When not compressed, the sternal closure strand has a diameter slightly larger than the diameter of the needle used to emplace the strand in position around the sternal halves, between the ribs. After insertion, the expandable suture material will provide gentle pressure against the surrounding tissue, to minimize bleeding in the needle track. The soft suture material will also help cushion, distribute, and minimize the stresses and damage inflicted on the sternum or ribs during postoperative ambulation; this can provide major benefits, especially among elderly and infirmpatients who require open-chest surgery. An optional fastener device which provides additional advantages is also disclosed. |
