摘要:
The invention is directed toward porous composites for application to a bone defect site to promote new bone growth. The inventive porous composites comprise a biocompatible polymer and a plurality of particles of bone-derived material, inorganic material, bone substitute material or composite material. In certain embodiments, the porous composites are prepared using a method that includes a supercritical fluid (e.g., supercritical carbon dioxide) treatment. The invention also discloses methods of using these composites as bone void fillers.
摘要:
A composite osteoimplant. The osteoimplant includes a polymer and bone-derived particles. The composite is adapted and constructed to be formable during or immediately prior to implantation and to be set after final surgical placement.
摘要:
Various instrumentation, implants and methodology are disclosed for implanting bone implants in the TLIF approach. The implants are preferably cortical bone of various shapes. The instruments include chisels, rasps, trials, inserters, spreaders, adjustors, curettes, rongeurs, and impactors. The instruments have straight and bent shafts. The implants may have recesses or notches in their sides for receipt of a mating insertion instrument. Some of the implants have a threaded hole for receiving a mating threaded stud of an implant insertion instrument. The implants may have saw tooth vertebral gripping surfaces which are lordotic or parallel, may be C-shaped, multi-faceted or annular.
摘要:
An implant including a substantially cohesive aggregate comprising bone-derived particles. Cohesiveness is maintained by a member of mechanical interlocking, engagement of adjacent bone-derived particles with one another through engagement with a binding agent, thermal bonding, chemical bonding, or a matrix material in which the bone-derived particles are retained. The aggregate is shaped as a one-dimensional or two-dimensional body.
摘要:
Biological-based polyurethanes and methods of making the same. The polyurethanes are formed by reacting a biodegradable polyisocyanate (such as lysine diisocyanate) with an optionally hydroxylated biomolecule to form polyurethane. The polymers formed may be combined with ceramic and/or bone particles to form a composite, which may be used as an osteoimplant.
摘要:
An implant unit used in surgery has a body made from osteogenic implantable material and including an implant portion and a retaining portion, which is coupled to and extends transversely to the implant portion. The retaining portion is attached to the sidewall of the adjoining vertebral body or mammal bone to prevent displacement of the implant portion relative to the vertebral body or mammal bone and to accelerate fusion therebetween.
摘要:
An implant unit used in surgery has a body made from osteogenic implantable material and including an implant portion and a retaining portion, which is coupled to and extends transversely to the implant portion. The retaining portion is attached to the sidewall of the adjoining vertebral body or mammal bone to prevent displacement of the implant portion relative to the vertebral body or mammal bone and to accelerate fusion therebetween.
摘要:
A composite osteoimplant. The osteoimplant includes a polymer and bone-derived particles. The composite is adapted and constructed to be formable during or immediately prior to implantation and to be set after final surgical placement.
摘要:
An osteoimplant composite comprising a plurality of particles of an inorganic material, a bone substitute material, a bone-derived material, or any combination thereof; and a polymer material with which the particles are combined. The composite is either naturally moldable or flowable, or it can be made moldable or settable. After implantation, the composite may be set to provide mechanical strength to the implant. The inventive composite have the advantage of being able to fill irregularly shape implantation site while at the same time being settable to provide the mechanical strength required for most orthopedic applications. The invention also provides methods of using and preparing the moldable and flowable composites.