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US 2020/0139016 A1Published application
Elastomer molded body for medical device, method of manufacturing thereof, and medical device
AssigneeOlympus Corporation
InventorKazuhito TOMIZUKA
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Abstract
An elastomer molded body for a medical device includes an elastomer portion and a plurality of silica particles. The elastomer portion contains a fluorine-based elastomer. The plurality of silica particles are more densely distributed in outside of a center portion of the elastomer portion than inside of the center portion, such that at least some of the plurality of silica is exposed to a surface of the elastomer portion.
Claims7
An elastomer molded body for a medical device, comprising:
- an elastomer portion containing a fluorine-based elastomer;
- and
- a plurality of silica particles more densely distributed in outside of a center portion of the elastomer portion than inside of the center portion, at least some of the plurality of silica particles being exposed to a surface of the elastomer portion.
A method of manufacturing of an elastomer molded body for a medical device, comprising:
- kneading an elastomer molding material containing a crosslinkable first fluorine-based elastomer, a second fluorine-based elastomer composed of a liquid fluorine-based elastomer unable to crosslink with the first fluorine-based elastomer, a polymer oil, and a plurality of silica particles, and forming a kneaded material;
- molding the kneaded material using a mold;
- and
- heating the molded kneaded material to a temperature that is equal to or higher than a boiling point of the polymer oil to crosslink, the first fluorine-based elastomer in the kneaded material.
1 more element
Dependencies are inferred from the claim text.