Blood vessel prostheses of synthetic velours - by impregnation with a colloid and subsequent crosslinking

Abstract

Abstract Blood vessel prostheses are made of synthetic fibre velours impervious to liqs. The prostheses are constructed in a double sided fine velours weave and their surface is treated by impregnation with an emulsion or soln. This emulsion/soln. contains weakly acid or neutral, colloidal organic cpds. The velours prosthesis treated in this way is evacuated in a desiccator and the emulsion/soln. is evaporated by means of a stream of hot air. Damaged blood vessels can be replaced, partic. after repeated insertion of cannulae in haemodialysis of patients with kidney failure. Bovine arteries have been used for this purpose, but are very expensive and tend to cause thrombosis. Synthetic fibre prostheses, even when woven with a double velours structure, are not free from objections. Attempts to render them impermeable by treatment with soluble proteins has resulted in the formation of fine flakes which act as seeding crystals and again result in thrombosis. These problems are overcome by use of the invention.

Inventors

• 👤 Bernd Dipl Chem Dr Med Braun

Bibliographic Details