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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 11202849 B1

PDFFull Text
Date of Patent:
Dec. 21, 2021

Filed:

Aug. 07, 2018

Medical device and method for manufacturing the same

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventors:

Rumiko Kitagawa, Otsu, JP;

Masataka Nakamura, Otsu, JP;

Assignee:

TORAY INDUSTRIES, INC., Tokyo, JP;

Attorney:

RatnerPrestia

Primary Examiner:

Matthew P Coughlin

Assistant Examiner:

Thurman Wheeler

Int. Cl.
CPC ...
A61L 27/16 (2006.01); A61L 15/24 (2006.01); A61L 15/26 (2006.01); A61L 15/60 (2006.01); A61L 27/18 (2006.01); A61L 27/40 (2006.01); A61L 27/52 (2006.01); A61L 29/08 (2006.01); A61L 29/12 (2006.01); A61L 29/14 (2006.01); A61L 31/10 (2006.01); A61L 31/12 (2006.01); A61L 31/14 (2006.01); C08L 33/12 (2006.01); C08L 83/04 (2006.01);
U.S. Cl.
CPC ...
A61L 27/16 (2013.01); A61L 15/24 (2013.01); A61L 15/26 (2013.01); A61L 15/60 (2013.01); A61L 27/18 (2013.01); A61L 27/40 (2013.01); A61L 27/52 (2013.01); A61L 29/08 (2013.01); A61L 29/12 (2013.01); A61L 29/145 (2013.01); A61L 31/10 (2013.01); A61L 31/12 (2013.01); A61L 31/14 (2013.01); C08L 33/12 (2013.01); C08L 83/04 (2013.01);
Abstract

To provide a medical device including a substrate and a hydrophilic polymer layer formed on at least a part of the substrate, which satisfies the following conditions (a) to (d): (a) a polymer constituting the hydrophilic polymer layer is a hydrophilic polymer having an acidic group; (b) the hydrophilic polymer layer has a thickness of 1 nm or more and less than 100 nm; (c) a number ratio of basic group/acidic group of the hydrophilic polymer layer is 0.2 or less; and (d) a liquid film retention time at 40 minutes after ultrasonic cleaning in a phosphate buffer solution is 15 seconds or more. The present invention provides a medical device in which a surface of a substrate is hydrophilized, and a method for manufacturing same by a simple method.

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