Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Scleroproteins – e.g. – fibroin – elastin – silk – etc.
Patent
1989-03-10
1991-07-02
Schain, Howard E.
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins, i.e., more than 100 amino acid residues
Scleroproteins, e.g., fibroin, elastin, silk, etc.
106161, 8 9417, 8 7418, 81275, 435 681, C07K 1520
Patent
active
050286951
ABSTRACT:
The invention concerns a process for the manufacture of collagen membranes for medical applications, in which process the collagen raw materials obtained from cattle or pig collagen are mechanically freed of fatty residues and treated with diluted alkali and acids and, if need be, enzymes. It is thoroughly washed between these steps to thus clean the collagen raw material eliminating the accompanying contamination. It is then processed further while obtaining a collagen matrix with a dry weight of approximately 25% by weight. Thus obtained are collagen membranes, in which the original integral cohesion remains and with which a fast hemostatic effect is achieved; said membranes are also extremely flexible and they adhere well to the surface of a wound.
REFERENCES:
patent: 4185011 (1980-01-01), Eckmayer et al.
patent: 4404033 (1983-09-01), Stefffan
Eckmayer Zdenek
Janzen Ernst
Ruttgers Gunter
Chemokol Gesellschaft Zur Entwicklung von Kollagenprodukten
Schain Howard E.
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