Method of performing anastomosis of blood vessels
OwnerSyed Tasnim Razainventor
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Abstract
A tubular anvil sleeve is defined by at least two sleeve portions pivoted to each other for movement about an axis radially outwardly offset from an axis of the tubular anvil sleeve in its closed position. A tubular graft is inserted into the tubular anvil sleeve and a projecting end portion of the graft is folded over an exterior of the tubular annular sleeve. The tubular annular sleeve and the overfolded portion of the graft is inserted into an excised end of a blood vessel after which staples are ejected in a conventional manner. The tubular annular sleeve is removed by axial motion followed by relatively pivoting the sleeve portions about the pivot axis of the sleeve portions to open the tubular annular sleeve and effect the withdrawal/removal thereof.
Claims19
An anvil for use with a stapler operative for stapling end portions of tubes to each other comprising a substantially tubular anvil sleeve having an exterior surface, said exterior surface including means against which staples are driven and closed, said tubular anvil sleeve including at least two sleeve portions, and means for pivotally connecting said sleeve portions for pivotal movement from a first closed tubular stapling position to a second open removal position by relative pivoting movement about a pivot axis substantially parallel to and radially outwardly offset from an axis defined by said sleeve in said closed position whereby subsequent to the performance of a stapling operation said anvil sleeve can be removed from exterior surrounding relationship to a stapled end portion of a tube by pivoting said sleeve portions about said pivotally connecting means from said first closed tubular stapling position to said second open position.
A method of repairing a damaged blood vessel comprising the steps of removing a damaged portion of a blood vessel, providing a tubular graft, positioning the tubular graft at least partially within a tubular anvil sleeve having an exterior surface, folding an end portion of the tubular graft projecting beyond the tubular anvil sleeve into overylying relationship to the tubular anvil sleeve exterior surface, inserting the folded end portion and tubular anvil sleeve into a remaining end of the blood vessel from which the damaged vessel portion was removed, driving staples through the blood vessel remaining end and the folded over end portion to effect staple closure against the tubular anvil sleeve exterior surface, axially sliding the tubular anvil sleeve to effect the withdrawal thereof from the stapled folded end portion, and separating the tubular anvil sleeve along a chordal plane to effect the removal of the tubular anvil sleeve from the tubular graft.
Dependencies are inferred from the claim text.