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:
Jun. 04, 2002
Filed:
Jun. 01, 2000
Achim Berthold, Andernach, DE;
Walter Muller, Neuwied, DE;
Frank-Ulrich Flother, Schaffhausen, CH;
Rainer Naeff, Langwiesen, CH;
LTS Lohamann Therapie-Systeme AG, Andernach, DE;
Abstract
A wound dressing for the controlled release of active substance to wounds, especially of wound healing-promoting substances to slow-healing, chronic wounds, is characterized in that said wound dressing has a layered structure for the purpose of absorbing liquid, especially wound exudate, under volume increase, said layered structure at least comprising one polymer-containing layer ( ), one woven fabric-like or nonwoven-like layer ( ) and at least one active substance, and in that the polymer-containing layer ( ) contains hydrocolloid-containing swellable hydrogel as absorbent for liquid.