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:
Feb. 23, 1999
Filed:
Mar. 11, 1997
Applicant:
Inventors:
Leopoldo Della Ciana, Ravenna, IT;
Stefano Rinaldi, Parma, IT;
Andrea Grignani, Turin, IT;
Silvia Pascale, Turin, IT;
Assignee:
Sorin Biomedica Cardio S.p.A., Saluggia, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
600 36 ; 623-2 ; 623 11 ; 8 9411 ;
Abstract
A method of preparing biological implantation material fixed by means of aldehydes, in which the excess aldehyde is bound by treatment with an aminocarboxylic acid and the acid is selected from compounds of the general formula: ##STR1## in which n is 1 or 2 and X is a sulpho- (--SO.sub.3 H) or phosphono- (--PO.sub.3 H) group, and mixtures of such compounds.