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.:
Date of Patent:
Mar. 07, 1995
Filed:
Aug. 16, 1991
Mikio Koide, Kanagawa, JP;
Jun Konishi, Kanagawa, JP;
Kazuhito Ikegami, Kanagawa, JP;
Ken-ichi Osaki, Kanagawa, JP;
Terumo Kabushiki Kaisha, Tokyo, JP;
Abstract
Wound-covering materials comprising two layers, a first support layer which is to be in contact with a wound and a second moisture permeation-controlling layer which may optionally contain an antimicrobial agent are taught. The support layer is formed from a biocompatible highly aqueous gel-forming substance, e.g., carboxymethylcelluloses, alginates, hyaluronates, poly(meth)acrylates, chitosan derivatives and chitin derivatives, and at least a portion of the support layer which is to be in contact with a wound is coated with a water-repellant substance, e.g., silicones, polyurethanes, styrene-butadiene-styrene block copolymers and polytetrafluoroethylenes. The moisture permeation controlling layer may, e.g., be formed from steam permeable resin films made of silicone or polyurethane elastomers. The resultant wound-covering materials inhibit infection and pain, maintain adequate water retention, and do not produce bioincompatibility responses when applied to the site of wounds.