Abstract:
The present invention encompasses the finding that certain treatments (e.g., surface modifications) to particulate materials can provide surprising and unexpected benefits and/or features to composites and/or compositions as described herein. In some embodiments, such benefits and/or features may render particular composites and/or compositions particularly useful in a certain therapeutic context (e.g, for repair of tibial plateau, femoral head, craniofacial, or lateral mandibular body defects). The present invention demonstrates that certain composites and/or compositions wherein the particular material is or comprises defatted bone have surprising and beneficial attributes.
Abstract:
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.
Abstract:
A sublimator device is designed where the distance between the sublimation surface and the bottom of the device to be adjusted depending on the amount of substance in the bottom of the device and the rate of sublimation without stopping the process. The device has a threaded connector on the top that allows the condenser to be advanced or receded without stopping the sublimation process. Different embodiments of the sublimator device are disclosed and indications for the use of these devices during the sublimation process are discussed.
Abstract:
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.
Abstract:
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.
Abstract:
Polymeric nanofibers have been developed which are useful in a variety of medical and other applications, such as filtration devices, medical prosthesis, scaffolds for tissue engineering, wound dressings, controlled drug delivery systems, cosmetic skin masks, and protective clothing. These can be formed of any of a variety of different polymers, either non-degradable or degradable. In a preferred embodiment demonstrated in the following examples, nanofibers are formed of biodegradable and non biodegradable polyphosphazenes, their blends with other polyphosphazenes or with organic, inorganic/organometallic polymers as well as composite nanofibers of polyphosphazenes with nanosized particles such as hydroxyapatites.
Abstract:
Present inventions present composites of bone particles and polyurethane(s), as well as methods of making such composite and uses thereof. A porous composite comprises a plurality of bone particles; and polyurethanes with which the bone particles are combined. To prepare a porous composite, a composition comprise a plurality of bone particles, polyurethane precursors including polyisocyanate prepolymers and polyols, water and catalyst. A composition is either naturally moldable and/or injectable, or it can be made moldable and/or injectable. After implantation or injection, a composition may be set to form a porous composite that provides mechanical strength and supports the in-growth of cells. Inventive composites have the advantage of being able to fill irregularly shape implantation site while at the same time being settable to provide the mechanical strength for most orthopedic applications.
Abstract:
Polymeric nanofibers have been developed which are useful in a variety of medical and other applications, such as filtration devices, medical prosthesis, scaffolds for tissue engineering, wound dressings, controlled drug delivery systems, cosmetic skin masks, and protective clothing. These can be formed of any of a variety of different polymers, either non-degradable or degradable. In a preferred embodiment demonstrated in the following examples, nanofibers are formed of biodegradable and non biodegradable polyphosphazenes, their blends with other polyphosphazenes or with organic, inorganic/organometallic polymers as well as composite nanofibers of polyphosphazenes with nanosized particles such as hydroxyapatites.
Abstract:
Present inventions present composites of bone particles and polyurethane(s), as well as methods of making such composite and uses thereof. A porous composite comprises a plurality of bone particles; and polyurethanes with which the bone particles are combined. To prepare a porous composite, a composition comprise a plurality of bone particles, polyurethane precursors including polyisocyanate prepolymers and polyols, water and catalyst. A composition is either naturally moldable and/or injectable, or it can be made moldable and/or injectable. After implantation or injection, a composition may be set to form a porous composite that provides mechanical strength and supports the in-growth of cells. Inventive composites have the advantage of being able to fill irregularly shape implantation site while at the same time being settable to provide the mechanical strength for most orthopedic applications.
Abstract:
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.