Parmaceutical compositions

Details Parmaceutical compositions Parmaceutical compositions

A - Human Necessities

61

L

A61L 31/10 (2006.01) A61L 29/08 (2006.01) A61L 29/16 (2006.01) A61L 31/16 (2006.01)

Patent

CA 2549601

A device implantable into a human or animal body comprising a biodegradable polymer which comprises ethylene carbonate units of the formula A -(-C(O)-O- CH2-CH2-O-) having an ethylene carbonate content of 70 to 100 Mol%, an intrinsic viscosity of 0.4 to 4.0 dl/g measured in chloroform at 20~C at a concentration of 1 g/dl and a glass transition temperature of from 5 to 50~C, degradable by surface erosion which is governed by a non-hydrolytic mechanism.

L'invention concerne un dispositif implantable dans un corps humain ou animal. Ledit dispositif comprend un polymère biodégradable qui comprend des unités de carbonate d'éthylène de formule A : -(-C(O)-O-CH¿2?-CH¿2?-O-) présentant une teneur en carbonate d'éthylène comprise entre 70 et 100 % en moles, une viscosité intrinsèque comprise entre 0,4 et 4,0 dl/g mesurée dans du chloroforme à 20 ·C à une concentration de 1 g/dl et une température de transition vitreuse comprise entre 5 et 50 ·C, dégradable par érosion de surface régie par un mécanisme non hydrolytique.

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