摘要:
The present invention relates to a surgical anti-adhesion barrier film comprising an oxidized collagen and a polyphosphate compound and to a surgical implant comprising a prosthetic fabric and such a film.
摘要:
A method of preparing a vinyl collagen microsphere polyamide fiber composite material includes the following steps: step 1: modifying a collagen with methacrylic anhydride to obtain a vinyl collagen, then emulsifying and cross-linking the vinyl collagen to obtain vinyl collagen microspheres; step 2: treating a polyamide fiber substrate with formaldehyde to obtain a hydroxylated polyamide fiber substrate, treating the hydroxylated polyamide fiber with (3-mercaptopropyl)trimethoxysilane (MPS) to obtain a sulfhydrylated polyamide fiber substrate; and step 3: modifying the sulfhydrylated polyamide fiber substrate with the vinyl collagen microspheres to obtain the vinyl collagen microsphere polyamide fiber composite material.
摘要:
A biofabricated material comprising a network of crosslinked collagen fibrils produced from recombinant collagen that contains substantially no 3-hydroxyproline residues is disclosed. This material is composed of collagen which is also a major component of natural leather and is produced by a process of fibrillation of collagen molecules into fibrils, crosslinking the fibrils and lubricating the crosslinked fibrils. Unlike natural leathers, this biofabricated material exhibits non-anisotropic (not directionally dependent) physical properties, for example, a sheet of biofabricated material can have substantially the same elasticity or tensile strength when stretched or stressed in different directions. Unlike natural leather, it has a uniform texture that facilitates uniform uptake of dyes and coatings. Aesthetically, it produces a uniform and consistent grain for ease of manufacturability. It can have substantially identical grain, texture and other aesthetic properties on both sides distinct from natural leather where the grain increases from one side (e.g., distal surface) to the other (proximal inner layers).
摘要:
Biofabricated leathers made by electrocompaction and/or electrospsinning. Described herein are biofabricated leather materials derived from electrospun or electrocompacted collagen networks. These electrospun or electrocompacted leathers may have leather-like properties following and are may be processed as native leather and used to form leather goods.
摘要:
Provided is a foam material, comprising a plurality of substantially collagenous beads, wherein the foam material is a bead foam, and wherein adjacent collagenous beads are fused together by a network of collagen fibers. Also provided are methods for preparation of foam materials comprising a plurality of substantially collagenous beads. The foam materials may be used in applications such as bioscaffolds for wound healing, soft tissue regeneration and augmentation, for localized cell delivery, or as cell culture substrates for research. The foam materials include natural collagen fibrils that provide a stable scaffold and enhance integration of the implanted scaffold and regeneration of cells and tissue.
摘要:
The present invention relates to the development of new porous particulate collagen sponges, combining the desirable features of low toxicity, resorbability, and satisfactory porosity, particularly when wetted in an aqueous medium. Accordingly, the present invention is directed to new porous, particulate, dehydrothermally cross-linked, wetted sponges, as well as a process for making them.
摘要:
Thermal insulation is prepared using gelatin foam. Embodiments of gelatin foam insulation which are described include gelatin foam having an anti-wicking agent which is an aromatic compound having as ring substituents: an --NH.sub.2 moiety and/or a hydroxyl moiety and also at least two sulfonate moieties. In another embodiment, the gelatin foam is combined with phyllosilicate mineral lamellae for void control and as a shrinkage deterrent. In yet another embodiment, crosslinked gelatin foam is described which has been crosslinked with a melamine/formaldehyde condensation product, a polyfunctional aziridine and/or an epichlorohydrin/polyamide condensation product.
摘要:
Fine particles of gelatin and amino acid used in the present invention are particularly suitable for use in combination with resins.Gelatin particles used in the present invention have the number-average molecular weight of 8,500 or less, and amino acid particles with the number-average molecular weight of 200 or less, so that efficient pulverization becomes possible and that gelatin and amino acid particles maintain their intrinsic properties as they are not subject to denaturation during pulverization. Resultant particles are neither too large nor too small but are uniform in size and are particularly suitable for use in combination with resins.
摘要:
The present invention relates to methods, compositions, and articles manufactured from scrap treated skin and/or leather which has been finely pulverized and mixed with synthetic resin. It further includes a method for the manufacture of improved leather products made from animal skin and/or leather and/or animal gelatin including the products derived therefrom and the method of producing skin and/or leather powder by use of steam and pulverization for combining with a fluid plastic material or resin in which the powder is uniformally dispersed in the plastic resin material for molding, extruding or manufacture of sheet material or for incorporation into coatings, paint or other plastic resinous products.