Metal working – Means to assemble or disassemble – Overedge assembling means
Reexamination Certificate
2006-11-17
2010-10-19
Wilson, Lee D (Department: 3727)
Metal working
Means to assemble or disassemble
Overedge assembling means
C029S243570, C072S220000, C606S144000
Reexamination Certificate
active
07814630
ABSTRACT:
A method and apparatus for making armed sutures has a pair of opposed die assemblies that may be driven by actuating surfaces of a swaging machine to hold and swage a needle on a suture. The dies grip and confine the needle in the area of the suture receptacle. A pair of opposed swaging elements with offset stakes insert through passageways in the dies and impinge on the captured needle making a plurality of indentations in the needle barrel and gripping the suture in the suture receptacle. The indentations are offset and aligned generally in alternating peak-to-valley relationship, causing the suture receptacle and the contained suture to assume a serpentine configuration. The stakes and the resulting indentations can be dimensioned to result in a converging suture receptacle, which exhibits increasing shear force being exerted on the suture with increasing depth into the suture receptacle. The apparatus and method permit reliable suture-needle attachment over a larger range of tolerances, such that a single die setup can be used on a plurality of needle and suture materials. The resulting product exhibits a serpentine suture
eedle attachment interface with reliable attachment and smooth outer dimensions.
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Barsch Kenneth R.
Price John J.
Stametz Jerry W.
Ethicon Inc.
Wilson Lee D
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