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US 5,344,494 AGranted
Method for cleaning porous and roughened surfaces on medical implants
AssigneeSmith & Nephew Richards Inc.
InventorsJames A. Davidson, Ajit K. Mishra
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AssigneeSmith & Nephew Richards Inc.
InventorsJames A. Davidson, Ajit K. Mishra
Estimating the term…
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.
A method of cleaning a medical implant having a porous-coated or roughened surface, the surface containing loose debris particles and loosely-adherent debris particles, the method comprising:
A method of cleaning a medical implant having a porous-coated or roughened surface, the surface containing loose debris particles and loosely-adherent debris particles, the method comprising:
A method of cleaning a medical implant having a roughened or porous-coated surface, the surface containing loose debris and loosely-adherent debris particles, the method comprising:
Dependencies are inferred from the claim text.