Nonantigenic keratinous protein material

A process for preparing a nonantigenic protein colloid for soft tissue augmentation comprising the steps of:

• (a) processing a nonantigenic keratinous protein from a compatible donor to a powder form;
• (b) suspending the powdered protein in a sterilized bioinert carrier to create a protein colloid at a solids concentration in the range of 30 to 70 percent by volume that is suitable for injection;
• and
• (c) injecting the protein colloid into a recipient.

(Amended) A process for preparing a nonantigenic protein colloid for soft tissue augmentation comprising the steps of:

• (a) bleaching hair obtained from a compatible donor;
• (b) rinsing the bleached hair in a soap solution and deionized water to remove the bleaching agent;
• (c) drying the rinsed hair for about 1.5 hours at about 75.degree. C.;
• (d) chopping the dried hair to about 0.25 inch pieces;
• (e) homogenizing the chopped hair in a cooled solvent to a particle size in the range of about 0.1 .mu.m to about 500 .mu.m;
• (f) sonicating the homogenized hair in a cooled solvent;
• (g) evaporating the solvent to leave a powdered hair residue;
• (h) sterilizing the powdered hair residue;
• and
• (i) suspending the sterilized powdered hair residue in a sterilized bioinert carrier to create a colloid with a solids concentration in the range of 30 to 70 percent by volume.

A process for preparing and implanting a nonantigenic implant comprising the steps of:

• (a) processing a compatible nonantigenic keratinous protein to a powder form;
• (b) coating the powder form keratinous protein onto the surface of a biocompatible implant material;
• and
• (c) implanting said keratinous powder coated nonantigenic composite implant into a recipient.