Injectable cross-linked collagen with improved flow properties.

Aqueous suspensions of glutaraldehyde cross-linked fibrillar collagen and non-cross-linked fibrillar collagen were examined by rheometry, particle size analysis, and microscopic techniques. Although cross-linked collagen suspensions were similar to non-cross-linked suspensions by microscopic and size analyses, they differed in rheometric properties. Concentric cylinder Couette flow, shear creep, uniaxial creep, and porous bed flow all revealed that cross-linked collagen was more resistant to deformation and flow than non-cross-linked collagen.

Injectable collagen: a six-year clinical investigation.

An injectable form of bovine dermal collagen has been developed for use in correcting cutaneous contour deficiencies. This material is a sterile device composed predominantly of highly purified type I collagen dispersed in phosphate-buffered physiological saline containing 0.3% lidocaine.