Surgical fastening device and method for manufacture
AssigneeEthicon, Inc.
InventorsGlen C. Dorband, Alfred Liland, Edgar Menezes, Peter Steinheuser, Nicholas M. Popadiuk, Stephen J. Failla
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Abstract
A tissue fastening device comprising (a) a fastener member having a pair of legs extending from the same side of a connecting cross piece, said fastener member adapted to be placed on one side of the tissue to be joined with the legs penetrating the tissue, said fastener member being an oriented cystalline polymeric material, whereby the fastener member has sufficient inherent strength and stiffness so said legs can penetrate the tissue to be fastened, and (b) a receiver member to secure said fastener member in place.
Claims10
A tissue fastening device comprising (a) a fastener member having a pair of legs extending from the same side of a connecting cross piece, said fastener member adapted to be placed on one side of the tissue to be joined with the legs penetrating the tissue, said fastener member being an oriented crystalline polymeric material, whereby the fastener member has sufficient inherent strength and stiffness so said legs can penetrate the tissue to be fastened, and (b) a receiver member to secure said fastener member in place, whereby said tissue fastening device retains measurable separation strength after 21 days immersion in physiological saline solution at 37.degree. C. and a pH of 7.2, wherein the said oriented crystalline polymeric material has a degree of orientation such that it has a birefringence .DELTA.n of at least 0.005 and a degree of crystallinity of at least 10 percent, as determined by X-ray diffraction.
A tissue fastening device comprising (a) a fastener member having a pair of legs extending from the said side of a connecting cross piece, said fastener member adapted to be placed on one side of the tissue to be joined with the legs of said fastener member penetrating the tissue, and (b) a receiver member adapted to be placed on the opposite side of the tissue to be joined and engaging said legs of said fastener member to secure the device in place, said fastener member being an oriented crystalline polymeric material, whereby the fastener member has sufficient inherent strength so said legs can penetrate the tissue and said fastener member remains secured to said receiver member with measurable strength for at least seven days after implantation in said tissue, wherein the said oriented crystalline polymeric material has a degree of orientation such that it has a birefringence .DELTA.n of at least 0.005 and a degree of crystallinity of at least 10 percent, as determined by X-ray diffraction.
Dependencies are inferred from the claim text.