Self-Supporting Collagen Tunnel for Guided Tissue Regeneration and Method of Using Same
AssigneeOsseous Technologies of America
InventorsJay MALMQUIST, David Cheung, William Knox
Life of this patent
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Abstract
A biocompatible, self-supporting, curved, collagen membrane adapted to be secured by bone tacks or bone screws over exposed bone at a desired bone graft site in the alveolar ridge of a patient such that the membrane defines a space having a predetermined height and width over the exposed bone, in which the membrane maintains its structural integrity for at least 4 months after implantation at the bone graft site and then naturally breaks down and is resorbed by the patient's body, a method of making such a membrane, and a method of using such a membrane for vertical augmentation of the alveolar ridge of the patient.
Claims19
A biocompatible, self-supporting, curved collagen membrane adapted to be secured to the alveolar ridge of a bone graft patient for containing a bone graft material in a desired configuration and location on the alveolar ridge.
A method of making a biocompatible, self-supporting curved, resorbable collagen membrane, said method comprising:
- forming a suspension of collagen fibers in an alcohol/water solution;
- pouring the suspension into a curved mold cavity of a mold;
- subjecting the mold to freezing temperature until the suspension in the mold solidifies;
- opening the mold;
- subjecting the frozen suspension to freeze drying to produce a membrane;
- spraying the freeze-dried membrane with an alcohol/water solution;
- thereafter subjecting the membrane to drying;
- and
- heat treating the dried membrane.
A method of augmenting the alveolar ridge of a patient, said method comprising:
- surgically exposing bone to be augmented at a desired bone graft site in the alveolar ridge of the patient;
- disposing a self-supporting, curved, collagen membrane over the exposed bone at the desired bone graft site such that said collagen membrane provides a defined space of predetermined height and width adjacent the exposed bone;
- securing the collagen membrane in position with bone tacks or bone screws;
- and
- packing said defined space with a bone graft material.
Dependencies are inferred from the claim text.