Absorbable collagen prosthetic implant with non-absorbable reinforcing strands
First Claim
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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.
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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.
- IMPREGNATING A NON-ABSORBABLE FABRIC WITH AN AQUEOUS ACID DISPERSION OF SWOLLEN COLLAGEN FIBRILS;
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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.
Specification