Method for cleaning porous and roughened surfaces on medical imp

Details Method for cleaning porous and roughened surfaces on medical imp Method for cleaning porous and roughened surfaces on medical imp

1993-01-21

1994-09-06

Dean, Richard

Cleaning and liquid contact with solids

Processes

Using solid work treating agents

134 1, 134 42, 51307, 451 39, B08B 700, B08B 312

Patent

active

053444949

ABSTRACT:
A method for the cleaning of roughened surface or porous-coated medical implants of all kinds. In the cleaning method, the roughened surface or porous-coated implant is subjected to blasting with particulate solids selected from the solids that are soluble in a biocompatible non-toxic solvent and solids that deliquesce, sublimate or vaporize. The particulate solids must be sufficiently hard to provide effective impact for dislodging debris and loosely attached particles from implant surfaces. After blasting, the surface is optionally treated with ultrasonic vibration to further remove debris particulates. The impacted surfaces may also be rinsed with a biocompatible liquid. After cleaning, the surfaces may be passivated by immersion in conventional passivation solutions or a solution of non-aggressive oxyanions.

REFERENCES:
patent: 5057108 (1991-10-01), Shetty et al.
patent: 5095925 (1992-03-01), Elledge et al.
patent: 5160547 (1992-11-01), Kirschner et al.
patent: 5211663 (1993-05-01), Kovacs et al.

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