Process for preparing medicinal dressings

Details Process for preparing medicinal dressings Process for preparing medicinal dressings

1974-03-04

1976-02-24

Trapp, Lawrence W.

Surgery

Truss

Pad

128260, A61L 1500

Patent

active

039398315

ABSTRACT:
Collagen-based medicinal dressings are produced by freezing a collagen aqueous polydispersion obtained from cattle hide in a concentration of 0.66 to 2% by weight at a temperature of at most -65.degree.C and subjecting the frozen polydispersion to vacuum at a pressure of 10.sup.-.sup.3 to 10.sup.-.sup.5 torr for a period of 24 to 48 hours while maintaining a temperature thereof of at most +35.degree.C. The resulting spongy mass has a density of 0.03 to 0.06 gram/cm.sup.3.

REFERENCES:
patent: 2444124 (1948-06-01), Wedler
patent: 2610625 (1952-09-01), Sifferd et al.
patent: 3157524 (1964-11-01), Artandi
patent: 3742955 (1973-07-01), Battista et al.

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