Surgical instrument having a toughened wearing surface and metho

Details Surgical instrument having a toughened wearing surface and metho Surgical instrument having a toughened wearing surface and metho

1990-05-11

1992-10-06

Thaler, Michael H.

Stock material or miscellaneous articles

Composite

Of metal

606 1, 606205, 606174, 427 2, 427250, 4272481, 148537, A61B 1728, A61B 1732

Patent

active

051527740

ABSTRACT:
A method for making a stainless steel or titanium surgical instrument having a high toughness wearing surface, by vapor deposition of titanium nitride thereon in a vacuum chamber having a molten evaporant in a hearth in the bottom of the chamber, and using the hollow cathode effect. A preferred method includes tempering the instrument at temperatures above 200.degree. C., then coating by physical vapor deposition at temperatures from about 175.degree. to 260.degree. C. Ring handled instruments with box lock pivots are coated before assembly. Toughened surgical instruments are also disclosed.

REFERENCES:
Balzers Tool Coating, Inc. Sales Brochure Published Approximately Jan. 1987.
Niagara Cutter Titanium Nitride Coated Milling Cutters Mar. 1, 1984.

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