Absorbable collagen prosthetic implant with non-absorbable reinforcing strands

• US 3,272,204 A
• Filed: 09/22/1965
• Issued: 09/13/1966
• Est. Priority Date: 09/22/1965
• Status: Expired due to Term

• Current Assignee: Charles Artandi, Dee Bechtol Lavon
• Original Assignee: Charles Artandi, Dee Bechtol Lavon
• Inventors: CHARLES ARTANDI, DEE BECHTOL LAVON
• Application Number:
  US04/495,010
• Time in Patent Office: 356 Days
• US Class Current: 606/151
• CPC Class Codes: A61F 2/04 Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts A61F2/18, A61F2/20 take precedence; devices, other than stent-grafts, providing patency to, or preventing collapsing of, tubular structures of the body other than stent-grafts, e.g. stents A61F2/82; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61L 27/48 with macromolecular fillers
• CPC Class Codes: C08L 89/06 derived from leather or skin , e.g. gelatin

Claims

1. A METHOD OF MANUFACTURING SURGICAL PROSTHESES WHICH COMPRISES THE STEPS OF:

IMPREGNATING A NON-ABSORBABLE FABRIC WITH AN AQUEOUS ACID DISPERSION OF SWOLLEN COLLAGEN FIBRILS;

FREEZING THE AQUEOUS ACID DISPERSION OF SWOLLEN COLLAGEN FIBRILS;

IMMERSING THE FROZEN MASS IN A WATER-MISCIBLE ORGANIC SOLVENT CONTAINING SUFFICIENT BASE TO NEUTRALIZE THE ACID PRESENT IN SAID DISPERSION;

REMOVING THE RESULTING STRUCTURE FROM THE ORGANIC SOLVENT;

AND, DRYING THE RESULTING STRUCTURE.

7. A SURGICAL PROSTHESIS COMPRISING:

A WOVEN OPEN MESH NON-ABSORBABLE CYLINDRICAL TUBE, MANUFACTURED OF METERIAL SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE TEREPHYTHALATE AND TETRAFLUROETHYLENE POLYMER, AND COATED ON BOTH SIDES WITH A BODY ABSORBABLE SUBSTANCE CONSISTING OF COLLAGEN FIBRILS, WHEREBY THE PROSTHESIS IS RENDERED BLOODTIGHT.