| 摘要 |
The polymeric implant is obtained from a renewable source, comprising a body formed by at least one biodegradable polymer selected from the group consisting of polyhydroxyalcanoates (PHAs) and copolymers thereof, said body incorporating, in its micro-structure, an active ingredient in a sufficient quantity to control at least one oestrus cycle of mammal animals. The invention further refers to a process for obtaining a polymeric implant comprising the steps of: mixing progesterone or progestogen, at least one polymer of the group of PHAs, one polymeric additive defined by poly(epsilon-caprolactone), and at least one dispersant additive and/or solvent, to obtain a colloidal solution; evaporating the solvent of the colloidal solution, and forming a paste with the components dispersed therein; drying the paste to remove the residual solvents and control the granulometry of the polymer composite; extruding the polymeric composite and moulding the latter in an implant body.
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