Method for obtaining a thread in order to produce devices to be implanted into the human body

A method for the obtainment of a thread made of a material biocompatible and implantable in the human body, comprising the following steps:

• providing UHMWPE as a plastic base material, wherein said UHMWPE has a molecular weight and is in granular or pellet form,
• providing a polyethylene material with a molecular weight which is lower than the molecular weight of the UHMWPE, wherein said polyethylene material is in powder, granular or pellet form,
• adding said polyethylene material to the UHMWPE or vice versa,
• mixing said polyethylene material with the UHMWPE, obtaining a plastic mixture,
• providing a pharmaceutical or medical substance comprising at least one antibiotic,
• adding said pharmaceutical or medical substance to said plastic mixture,
• mixing said pharmaceutical or medical substance with said plastic mixture, obtaining an added base mixture, wherein said pharmaceutical or medical substance is uniformly distributed in the added base mixture,
• heating said added base mixture in an extruder at a predetermined temperature which is lower than the degradation temperature of said pharmaceutical or medical substance, obtaining a melted material,
• extruding said melted material in order to obtain said thread made of said heated material,
• cooling down said thread, and
• moulding said thread in order to obtain a device able to be implanted in the human body such as a catheter, screw or joint, coupling or mesh, spacer device, prosthesis or prosthetic device.