Patent ID: 7014860
Filing Date: 2006-03-21
Classification: A61L,C08B,C08L

Abstract:
1. A biomedical material which contains a transparent gel consisting of hyaluronic acid or a salt thereof; a second acid or a salt thereof; and water; wherein the transparent gel does not contain any cross-linkers, and wherein at least one of the following requirements (a), (b) and (c) is satisfied: (a) the hyaluronic acid gel dissolves in a neutral aqueous solution at 25° C. in one day to a degree of dissolution of at most 50%, (b) the hyaluronic acid gel dissolves to yield a solubilized hyaluronic acid having a branched structure and partly containing a molecular weight fraction with a branching degree of at least 0.5, when treated under accelerating conditions for acid hydrolysis of hyaluronic acid, or (c) the hyaluronic acid gel satisfies the above requirements (a) and (b), and the biomedical material also contains an un-gelled hyaluronic acid.