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US 5,246,530 AGranted
Method of producing porous metal surface
AssigneeDynamet, Inc.
InventorsClifford M. Bugle, Alfred L. Donlevy
Life of this patent
Estimating the term…
Abstract
A porous surface is selectively formed on a workpiece such as a medical implant by pulsing a laser device in a controlled manner to produce a plurality of small, spaced-apart cavities of uniform or variable depth. The porous surface provides a mechanical grip with bone cement as well as a medium for bone and tissue ingrowth.
Claims9
A process for forming a porous surface on a metal implant device comprising the steps of:
- (a) providing a laser apparatus for generating a pulsed laser beam;
- (b) coating said metal implant device with a release agent;
- (c) activating said laser apparatus to form said porous surface;
- and
- (d) removing said release agent and accumulated metal platter from said implant device.
2 more elements
A process for forming a porous surface on a metal implant device comprising the steps of:
- (a) providing a laser apparatus for generating a laser beam;
- (b) coating said metal implant device with a chemical maskant;
- (c) drilling a plurality of cavities in the metal implant device with said laser beam;
- (d) submerging said drilled device in an etching bath and etching said drilled cavities to selectively remove metal therefrom;
- and
- (e) cleaning said etched device to remove said chemical maskant therefrom.
3 more elements
A process for forming a porous surface on a metal implant device comprising the steps of:
- (a) providing a laser apparatus for generating a pulsed laser beam;
- (b) coating said metal implant with a layer of a chemical maskant;
- (c) coating said layer of chemical maskant agent with a release agent;
- (d) pulsing said laser to drill a plurality of cavities in said coated metal implant device;
- (e) submerging said drilled and coated implant device in an etching bath and etching said drilled cavities to selectively remove metal therefrom;
- and
- (f) cleaning said etched implant device to remove said chemical maskant coating therefrom.
4 more elements
Dependencies are inferred from the claim text.