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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12338347 B1

PDFFull Text
Date of Patent:
Jun. 24, 2025

Filed:

Dec. 05, 2019

Medical device

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventors:

Rumiko Kitagawa, Otsu, JP;

Masataka Nakamura, Otsu, JP;

Assignee:

TORAY INDUSTRIES, INC., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Patrick D Niland

Int. Cl.
CPC ...
C08L 83/04 (2006.01); A61L 15/24 (2006.01); A61L 15/26 (2006.01); A61L 26/00 (2006.01); A61L 27/16 (2006.01); A61L 27/18 (2006.01); A61L 27/50 (2006.01); A61L 29/04 (2006.01); A61L 29/06 (2006.01); A61L 29/14 (2006.01); A61L 31/04 (2006.01); A61L 31/06 (2006.01); A61L 31/14 (2006.01); C08L 33/08 (2006.01); G02B 1/04 (2006.01); G02C 7/04 (2006.01);
U.S. Cl.
CPC ...
C08L 83/04 (2013.01); A61L 15/24 (2013.01); A61L 15/26 (2013.01); A61L 26/0014 (2013.01); A61L 26/0019 (2013.01); A61L 27/16 (2013.01); A61L 27/18 (2013.01); A61L 27/50 (2013.01); A61L 29/041 (2013.01); A61L 29/06 (2013.01); A61L 29/14 (2013.01); A61L 31/048 (2013.01); A61L 31/06 (2013.01); A61L 31/14 (2013.01); C08L 33/08 (2013.01); G02B 1/043 (2013.01); G02C 7/049 (2013.01); A61L 2400/10 (2013.01); A61L 2430/16 (2013.01);
Abstract

A medical device including an internal wetting agent and a copolymer of a silicone monomer and satisfying the following conditions: (1) that the internal wetting agent contains a copolymer of an open-chain compound having an acidic group and an open-chain compound having an amide group; (2) that the internal wetting agent is contained in the range of from 0.1 to 10% by mass with respect to the whole medical device; and (3) that the copolymer of a silicone monomer has a hydroxyl group and that the content ratio of the hydroxyl group in the silicone monomer is in the range of from 0.0005 to 0.01 equivalents/g. A medical device containing an internal wetting agent and having excellent transparency and hydrophilicity can be obtained.

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