Plastic surgical staple
First Claim
1. A one-piece, self-locking, plastic surgical staple comprising, in a vertical plane,a horizontal bridging member spanning the width of the staple and terminating at each end in an upward extending staple leg support member,an L-shaped staple leg extending horizontally outward and downward from each leg support member and terminating in a tissue-piercing point,a staple leg extension extending inwardly from each staple leg at the leg support member and terminating with a space between opposing ends of said extensions,a center post extending vertically upward from said bridging member and through said space between the opposing ends of said extensions, anda horizontal staple leg locking bar secured to said center post and extending horizontally in a closely spaced relationship adjacent said staple leg extensions and staple leg support members,said staple leg support members and staple legs secured thereto being pivotable with respect to said horizontal bridging member to close said staple legs, whereupon said staple leg extensions deflect said locking bar and are thereafter engaged by said locking bar to maintain said staple legs in their closed position.
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Accused Products
Abstract
A one-piece, self-locking, molded plastic staple useful as a tissue fixation device in surgical procedures. The staple has opposed, pointed, L-shaped legs secured to a horizontal bridging member. Each leg has an extension which is engaged by a locking bar extending between the extensions when the staple is closed by forcing the legs through a 90° arc. The staples may be extruded or molded of absorbable or nonabsorbable polymeric materials.
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Citations
26 Claims
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1. A one-piece, self-locking, plastic surgical staple comprising, in a vertical plane,
a horizontal bridging member spanning the width of the staple and terminating at each end in an upward extending staple leg support member, an L-shaped staple leg extending horizontally outward and downward from each leg support member and terminating in a tissue-piercing point, a staple leg extension extending inwardly from each staple leg at the leg support member and terminating with a space between opposing ends of said extensions, a center post extending vertically upward from said bridging member and through said space between the opposing ends of said extensions, and a horizontal staple leg locking bar secured to said center post and extending horizontally in a closely spaced relationship adjacent said staple leg extensions and staple leg support members, said staple leg support members and staple legs secured thereto being pivotable with respect to said horizontal bridging member to close said staple legs, whereupon said staple leg extensions deflect said locking bar and are thereafter engaged by said locking bar to maintain said staple legs in their closed position.
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17. In combination with a stapling tool having a forming anvil and a cooperating forming die, a one-piece self-locking plastic surgical staple comprising, in a vertical plane and prior to closure,
a horizontal bridging member spanning the width of the staple and terminating at each end in an upward extending staple leg support member, an L-shaped staple leg extending horizontally outward and downward from each leg support member and terminating in a tissue-piercing point, a staple leg extension extending inwardly from each staple leg and leg support member and terminating with a space between opposing ends of said extensions, a center post extending vertically upward from said bridging member and through said space between the opposing ends of said extensions, and a horizontal staple leg locking bar secured to said center post and extending horizontally in a closely spaced relationship adjacent said staple leg extensions and staple leg support members, said forming anvil having a width substantially equal to the width of said horizontal bridging member, said forming die having two downward projecting extremities spaced to engage the staple legs when the staple is centered on the anvil, the distance between said extremities corresponding substantially to the width of the staple after closure, said anvil and said forming die being operable to close said staple by pivoting said staple leg support members and staple legs with respect to said horizontal bridging member, whereupon said staple leg extensions deflect said locking bar and are thereafter engaged by said locking bar to maintain said staple legs in their closed position.
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21. A one-piece, self-locking, surgical staple comprising:
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a bridging member spanning the width of the staple; a staple leg joined to each end of said bridging member by hinge means and terminating in a tissue-piercing segment; and locking means comprising a T-shaped locking bar having a stem extending from the center of the bridging member and a deflectable cross member, said locking means cooperatively engaging to prevent the reverse rotation of said legs when the staple legs are closed and locked in position upon rotation about said hinge means. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification