Polymer composite comprising a continuous release antibiotic

A - Human Necessities – 61 – L

Patent

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Details

A61L 31/16 (2006.01) A61L 27/34 (2006.01) A61L 27/54 (2006.01) A61L 29/08 (2006.01) A61L 29/16 (2006.01) A61L 31/10 (2006.01)

Patent

CA 2438346

The present invention pertains to an antibiotic polymer combination/antibiotics polymer combination that ensures the continuous release of antibiotics over a period of several days under physiological conditions, and that can be used in human and veterinary medicine. The surprising finding that forms the basis of the invention is that one or more antibiotic salts, which are sparingly soluble in water, from the groups comprising aminoglycoside antibiotics, lincosamide antibiotics, tetracycline antibiotics, glycopeptide antibiotics, quinolone antibiotics and chlorhexidine, are suspended in homogeneous polymer mixtures, which comprise one or more hydrophobic, nonionic polymers from the groups comprising poly(vinyl chloride), post--chlorinated poly(vinyl chloride), poly(vinylidene chloride), poly(vinyl fluoride), poly(vinylidene fluoride) and copolymers comprising vinyl chloride and one or more nonionic monomers, and which comprise one or more hydrophilic polymers from the groups comprising polyethers, and this suspension forms composites that exhibit the release of an active ingredient over a period of days in an aqueous medium.

La présente invention concerne une combinaison d'antibiotique et de polymère/une combinaison d'antibiotiques et de polymères qui assure une libération prolongée d'antibiotiques sur une période de plusieurs jours dans des conditions physiologiques, et qui peut être utilisée en médecine humaine et vétérinaire. La découverte surprenante qui sous-tend l'invention est celle- ci: un ou plusieurs sels d'antibiotique peu hydrosolubles issus du groupe comprenant les antibiotiques aminoglycosides, les antibiotiques lincosamide, les antibiotiques tétracycline, les antibiotiques glycopeptide, les antibiotiques quinolone et la chlorhexidine sont suspendus dans des mélanges homogènes de polymères, lesquels sont constitués d'un ou de plusieurs polymères hydrophobes, non ioniques provenant du groupe comprenant le poly(chlorure de vinyle), le poly(chlorure de vinyle) post-chloré, le poly(chlorure de vinylidène), le poly(fluorure de vinyle), le poly(fluorure de vinylidène) et de copolymères comprenant le chlorure de vinyle et un ou plusieurs monomères non ioniques, lesquels comprennent un ou plusieurs polymères hydrophiles issus du groupe comprenant des polyéthers. Cette suspension forme des composites qui libèrent un ingrédient actif sur plusieurs jours en milieu aqueux.

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