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:
Jul. 10, 2006
Filed:
Sep. 15, 1999
Method for preparing two-layer bicomposite collagen material for preventing post-operative adhesions
Yves Bayon, Villeurbanne, FR;
Philippe Gravagna, Irigny, FR;
Jean-louis Tayot, La Tour de Salvagny, FR;
Yves Bayon, Villeurbanne, FR;
Philippe Gravagna, Irigny, FR;
Jean-Louis Tayot, La Tour de Salvagny, FR;
Imedex Biomateriaux, Chaponost, FR;
Abstract
A bicomposite material based on collagen is prepared which has two closely bound layers and is biocompatible, non-toxic, hemostatic and biodegradable in less than a month, and can be used in surgery to achieve hemostasis and prevent post-surgical adhesion. To prepare the material, a solution of collagen or gelatin, which may contain glycerine and a hydrophilic additive such as polyethylene glycol or a polysaccharide, is poured onto an inert support to form a layer 30 μm to less than 100 μm thick. Then a polymeric porous fibrous layer is applied during gelling of the collagen or gelatin, and the resultant material is dried. The polymeric porous fibrous layer may be made of collagen or a polysaccharide, and have a density of not more than 75 mg/cm, a pore size from 30 μm to 300 μm and a thickness of 0.2 cm to 1.5 cm.