Dry polishing of intraocular lenses

An intraocular lens, polishing medium technology, applied in the direction of intraocular lens, grinding/polishing equipment, surface polishing machine tools, etc., can solve the problems of inappropriate manufacturing process, impracticality and inapplicability
CN1479664AInactive Publication Date: 2004-03-03BAUSCH & LOMB INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BAUSCH & LOMB INC
Publication Date
2004-03-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

A process of dry polishing molded or lathe cut intraocular lenses to removing flash, sharp edges and / or surface irregularities therefrom. The process includes rotational tumbling of partially protected intraocular lenses in a dry polishing media. The process is suitable for single piece and multipiece intraocular lenses of varying composition.
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Description

technical field

[0001] The present invention relates to methods of polishing intraocular lenses. More particularly, the present invention relates to a method of dry polishing intraocular lenses in a particle pack to remove burrs, surface irregularities and / or sharp edges from molded or lathe cut surfaces. Background technique

[0002] Methods of molding articles from moldable materials are known. A common problem with molding techniques is the formation of excess material, or flash, on the edges of molded articles. Depending on the type of article being formed during the molding process and how the article will be used, excess material or flash is undesirable. Also, rough jagged or sharp edges are not desirable on lathed items.

[0003] For many medical devices, such as intraocular lens implants, it is critical that the polished surface be free of sharp edges or irregularities. With intraocular lenses, the lens is in direct contact with the delicate eye tissue. Any roug...

Claims

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