Surgical staple

Details Surgical staple Surgical staple

1989-10-30

1990-09-11

Green, Randall L.

Surgery

Instruments

Sutureless closure

411457, 411471, 227902, A61B 1700

Patent

active

049558986

ABSTRACT:
A surgical staple has a base portion and a pair of leg portions respectively extending angularly from the opposite ends of the base portion. Each leg portion has at its distal end portion a first inclined surface and a second inclined surface extending from the first inclined surface to the distal end of said leg portion. The first and second inclined surfaces are inclined with respect to the axis of the leg portion. The angle between the first inclined surface and the axis of the leg portion is smaller than the angle between the second inclined surface and the axis of the leg portion. The second inclined surface terminates in a sharp edge at its distal end. For producing the surgical staple, a blade is moved toward each of the leg portions in inclined relation to the axis thereof to shear the leg portion, so that a smooth sheared surface and a coarse ruptured surface are formed on the distal end portion of the leg portion and arranged in this order toward the distal end of the leg portion. The sheared surface defines the first inclined surface whereas the ruptured surface defines the second inclined surface. A shearing member having the above blade serves to bend and shear the leg portions of the surgical staple.

REFERENCES:
patent: 3583663 (1971-06-01), Snow
patent: 4014492 (1977-03-01), Rothfuss
patent: 4131975 (1979-01-01), Niedecker
patent: 4505273 (1985-03-01), Braun et al.
patent: 4610251 (1986-09-01), Kumar
patent: 4669647 (1987-06-01), Storace

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