Bioabsorbable ,oriented, deformable fixation material and plate

A bioabsorbable surgical osteosynthesis plate, operable to be secured by at least one fastener through at least one fastener opening formed in the plate to a bone, said osteosynthesis plate comprising:

• a flat section having first and second surfaces defining a main plane of the plate which is a sheet plane of the plate, the plate comprising a polymer material, including at least one of polymer, copolymer or polymer alloys, said polymer material being oriented multiaxially to form a multiaxially oriented structure of the plate and being substantially rigid and substantially deformable at a first thermochemical state, and being arranged in the multiaxially oriented structure of the plate according to at least three different orientation axes along the main plane of the plate as a result of solid state drawing of the plate, the polymer material of the plate having isotropic mechanical tear properties in different directions along the main plane of the plate.

An implantable bioabsorbable bone stabilization device for stabilizing a plurality of bone portions, said device comprising:

• a biocompatible osteosynthesis plate comprising a flat section having first and second surfaces defining a main plane of the plate which is a sheet plane of the plate, the plate comprising a polymer material, including at least one of polymer, copolymer or polymer alloys, said polymer material being oriented multiaxially to form a multiaxially oriented structure of the plate and being substantially rigid and substantially deformable at a first thermochemical state, and being arranged in the multiaxially oriented structure of the plate according to at least three different orientation axes along the main plane of the plate as a result of solid state drawing of the plate, the polymer material of the plate having isotropic mechanical tear properties in different directions along the main plane of the plate;
• and
• an attachment structure configured to attach said plate to a plurality of bone portions.

A method for manufacturing a bioabsorbable osteosynthesis plate comprising a biocompatible osteosynthesis plate comprising a flat section having first and second surfaces defining a main plane of the plate which is a sheet plane of the plate, the plate comprising a polymer material, including at least one of polymer, copolymer or polymer alloys, said polymer material being oriented multiaxially to form a multiaxially oriented structure of the plate and being substantially rigid and substantially deformable at a first thermochemical state, and being arranged in the multiaxially oriented structure of the plate according to at least three different orientation axes along the main plane of the plate as a result of solid state drawing of the plate, the polymer material of the plate having isotropic mechanical tear properties in different directions along the main plane of the plate, the method comprising:

• drawing a preform of bioabsorbable polymer material multiaxially in the direction of at least three axes that extend in different directions in the plane of flat surfaces of the preform.

The method according to claim 42, wherein the preform is compressed in a mold with a 3-dimensional structure giving a groovelike or curved plate.