Metal deforming – Process – With attenuation – thickening – elongating or shortening of...
Reexamination Certificate
2007-03-06
2007-03-06
Suhol, Dmitry (Department: 3725)
Metal deforming
Process
With attenuation, thickening, elongating or shortening of...
C072S354200, C072S356000, C072S368000, C163S001000, C163S005000
Reexamination Certificate
active
10916937
ABSTRACT:
A method for manufacturing a surgical needle devoid of a grinding process includes the steps of swaging a needle blank to define a substantially tapered or conical needle end, pressing the tapered needle to form a plurality of intersecting surfaces and forming cutting edges along the lines of intersection of the intersecting sides. The needle may be subjected to an etching process (e.g., an acid bath) to sharpen the cutting edges and/or provide a matte finish on the needle. The needle produced by the novel process is extremely sharp and durable, and exhibits an enhanced retention of sharpness relative to conventional ground needles over periods of prolonged use.
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Suhol Dmitry
Tyco Healthcare Group LP
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