Abstract: The present application discloses an alternative method for the formation of non-woven with fibers in the 1 to 200 ?m range. Using an aqueous solution of gelatin (optionally with <30% of low molecular weight alcohol) the fibers are ejected utilizing pressurized air emitted from nozzle and the non-woven formed directly from the emitted thin fibers. The gelatin non-woven can be cross-linked by heat-treatment or chemical cross-linking, and the non-woven is biocompatible as measured by fibroblast growth in vitro and wound healing on pigs in vivo.

Abstract: The present invention provides for a method for tissue engineering by cell implantation that involves the use of a scaffold in situ at the site of a defect, where the therapeutic cells are fixed in place into the scaffold only once the scaffold is inserted at the site of the tissue defect, thereby locking not only the cells to the scaffold, but also the scaffold to the tissue defect. The invention also provides a kit of parts suitable for performing the method of the invention.

Abstract: The present application discloses biodegradable polymers, to porous and other materials comprising such polymers, and to various medical uses of such materials, including use as a scaffold for supporting cell adhesion or the in-growth for regeneration of tissue. The polymer is of the formula A—O—(CHR1CHR2O)n-B wherein A is a poly(lactide-co-glycolide) residue, the molar ratio of (i) lactide units [—CH(CH3)—COO—] and (ii) glycolide units [—CH2—COO—] in the poly(lactide-co-glycolide) residue being in the range of 80:20 to 10:90, B is either a poly(lactide-co-glycolide) residue or hydrogen, C1-6-alkyl or hydroxy protecting groups, one of R1 and R2 is hydrogen or methyl, and the other is hydrogen, n is 10-1000, the molar ratio of (iii) polyalkylene glycol units [-(CHR1CHR2O)—] to the combined amount of (i) lactide units and (ii) glycolide units in the poly(lactide-co-glycolide) residue(s) is at the most 14:86, and the molecular weight of the copolymer is at least 20,000 g/mol.