Bioabsorbable, deformable fixation plate
AssigneeBionx Implants Oy
InventorsPertti Törmälä, Timo Pohjonen, Harri Happonen, Auvo Kaikkonen
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Abstract
The present invention relates generally to body tissue fixation systems, including body tissue fixation hardware comprising biocompatible, bioabsorbable (resorbable) thermoplastic plates, and methods of using those systems and hardware.
Claims32
A biocompatible, bioabsorbable osteosynthesis plate, capable of being secured by at least one fastener through at least one fastener opening formed in the plate to a plurality of bone portions, said osteosynthesis plate comprising:
- an elongated section having first and second surfaces and a plurality of fastener openings disposed between said first and second surfaces, the bioabsorbable plate being formed from a material that is oriented uni- and/or biaxially and is substantially rigid and substantially deformable and dimensionally stable at a first thermochemical state;
- wherein said plate has a first configuration at a first thermochemical state and is capable of being deformed to a second configuration at said first thermochemical state;
- said plate being further capable of maintaining said second configuration in a second thermochemical state;
- and
- said second configuration capable of conforming to the contour of a bone surface.
An implantable bone stabilization device for stabilizing a plurality of bone portions, said bone stabilization device having structural rigidity and comprising an uni- and/or biaxially oriented resorbable osteosynthesis plate formed from a material that is substantially rigid and dimensionally stable and substantially deformable at a first thermochemical state, wherein the plate is capable of being deformed during a surgical procedure to conform to the contour of a bone surface at a first thermochemical state, said plate having an elongated section comprising first and second surfaces and a plurality of fastener openings disposed between said first and second surfaces, whereby said resorbable osteosynthesis plate is capable of stabilizing said plurality of bone portions following implantation, said plate being further capable of maintaining its shape in a second thermochemical state, after fixation to said bone portion for a sufficient length of time for said bone portions to heal.
An implantable uni- and/or biaxially oriented bone stabilization device for stabilizing a plurality of bone portions, said bone stabilization device comprising:
- a resorbable uni- and/or biaxially oriented osteosynthesis plate formed from a material which is selected from the group of bioabsorbable polymers consisting of:
- polylactide homo- and copolymers, polyorthoesters, pseudo-polyaminoacids, and polyanhydrides;
- said material from which said resorbable uni- and/or biaxially oriented osteosynthesis plate is formed being substantially rigid and substantially deformable and dimensionally stable when at said first thermochemical state;
- wherein said plate has a first configuration at a first thermochemical state and is capable of being deformed to a second configuration at said first thermochemical state;
- said plate being further capable of maintaining said second configuration in a second thermochemical state;
- and
- said second configuration capable of conforming to the contour of a bone surface;
- whereby said resorbable uni- and/or biaxially oriented osteosynthesis plate is operable to stabilize said plurality of bone portions for a period of at least about four to eight weeks following implantation and be substantially completely resorbed about a year or several years following implantation.
An implantable uni- and/or biaxially oriented bone stabilization device for stabilizing a plurality of bone portions,
- wherein said device is formed from an uni- and /or biaxially oriented biocompatible osteosynthesis material that is substantially rigid, substantially deformable and dimensionally stable at said first thermochemical state;
- said device having a first configuration at a first thermochemical state and is capable of being deformed to a second configuration at said first thermochemical state;
- said device being capable of maintaining said second configuration in a second thermochemical state;
- said second configuration capable of conforming to the contour of a bone surface;
- and
- comprising a means for attaching said device to the plurality of bone portions.
An implantable bone stabilization device for stabilizing a plurality of bone portions, said bone stabilization device having structural rigidity and comprising a biaxially oriented resorbable osteosynthesis plate formed from a material that is substantially rigid and dimensionally stable and substantially deformable at a first thermochemical state, said plate having an elongated section comprising first and second surfaces and a plurality of fastener openings disposed between said first and second surfaces, whereby said resorbable osteosynthesis plate is capable of stabilizing said plurality of bone portions following implantation and will be substantially resorbed after about a year following implantation.
An implantable biaxially oriented bone stabilization device for stabilizing a plurality of bone portions, said bone stabilization device comprising:
- a resorbable biaxially oriented osteosynthesis plate formed from a material which is selected from the group of bioabsorbable polymers consisting of:
- polylactide homo- and copolymers, polyorthoesters, pseudo-polyaminoacids, and polyanhydrides;
- said material from which said resorbable biaxially oriented osteosynthesis plate is formed being substantially rigid and substantially deformable and dimensionally stable when at a first thermochemical state;
- whereby said resorbable biaxially oriented osteosynthesis plate is operable to stabilize said plurality of bone portions for a period of at least about four to eight weeks following implantation.
Dependencies are inferred from the claim text.