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:
Oct. 13, 1998
Filed:
Jul. 11, 1996
Applicant:
Inventors:
John M Ronan, New Castle, DE (US);
Samuel A Thompson, New Castle, DE (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M / ; B05D / ; B05D / ; B05D / ;
U.S. Cl.
CPC ...
427-21 ; 427-225 ; 427-23 ; 427343 ; 4274198 ; 623-1 ; 623 12 ; 606192 ; 606198 ; 604-8 ; 604 96 ; 604265 ; 600 29 ; 600 36 ; 424423 ; 424445 ; 424617 ; 424619 ; 424630 ;
Abstract
A process for impregnating a medical device made from a water absorbable polymer material, e.g., a hydrogel, with a medical compound having low solubility in aqueous solutions, e.g., an antiseptic or radiopaque compound, is disclosed. The device is first infiltrated with an aqueous solution containing a first water soluble, ionizable compound, and subsequently infiltrated with an aqueous solution containing a second water soluble, ionizable compound. The ionizable compounds are selected such that they react after mutual contact to form the medical compound in-situ within the device.