The present invention discloses a highly stretchable matrix, comprising mesh of lattice structures of microfibrillar filaments, having pore size enlargeable up to 8 times by moving the microfibrillar filaments perpendicular to the longitudinal axis of the microfibrillar filaments without losing its integrity. The invention also pertains to a method of preparing said highly stretchable matrix comprising the steps of: electrostatic spinning of the polymeric solution as microfibers, creating an air-flow at the inter-phase of microfibers to completely eliminate the solvent from the surface of the microfibers bundles to avoid inter-fibrillar bonding after collection and dispersing the microfibers in a direction perpendicular to the longitudinal axis of the fibers, 6-12 times the original width using a dispersion unit to obtain a stretch responsive fibrillar matrix.

A bone-regeneration-promoting material containing a composite of octacalcium phosphate and a bioabsorbable polymer and having edge dislocations introduced in the octacalcium phosphate in which the total dislocation density of the octacalcium phosphate is 0.30?10.sup.17 m.sup.?2 or more.

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.

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.

The present disclosure relates to bone cement formulations that have an extended working time for use in vertebroplasty procedures and other osteoplasty procedures together with cement injectors that include energy delivery systems for on-demand control of cement viscosity and flow parameters. The bone cement formulations may include a liquid component having at least one monomer and a non-liquid component including polymer particles and benzoyl peroxide (BPO). The non-liquid component may be further configured to allow controlled exposure of the BPO to the liquid monomer so as to enable control of the viscosity of the bone cement composition.

The present disclosure relates to bone cement formulations that have an extended working time for use in vertebroplasty procedures and other osteoplasty procedures together with cement injectors that include energy delivery systems for on-demand control of cement viscosity and flow parameters. The bone cement formulations may include a liquid component having at least one monomer and a non-liquid component including polymer particles and benzoyl peroxide (BPO). The non-liquid component may be further configured to allow controlled exposure of the BPO to the liquid monomer so as to enable control of the viscosity of the bone cement composition.

In certain described embodiments, implantable medical materials comprise a scaffolding material, a liquid organic binder, and entrapped calcium-containing particles. The medical materials can incorporate an osteoinductive factor such as a protein. The scaffolding material can bind the factor. In additional described embodiments, implantable medical materials include an osteoconductive scaffolding material, an incorporated osteoinductive factor, and a biodegradable barrier material effective to delay release of the factor from the scaffolding material. The scaffolding material can bind the factor. Also described a methods for preparing and implanting the described medical materials.

In certain described embodiments, implantable medical materials comprise a scaffolding material, a liquid organic binder, and entrapped calcium-containing particles. The medical materials can incorporate an osteoinductive factor such as a protein. The scaffolding material can bind the factor. In additional described embodiments, implantable medical materials include an osteoconductive scaffolding material, an incorporated osteoinductive factor, and a biodegradable barrier material effective to delay release of the factor from the scaffolding material. The scaffolding material can bind the factor. Also described a methods for preparing and implanting the described medical materials.

This invention relates a structure and system for growth factor incorporation which can improve the osteogenic differentiation of hMSCs, for potential bone regeneration and bone growth applications or used alone for bone repair or growth applications. The system comprises a biodegradable polyester, a hydrophilic polymer, a growth factor and optionally a bioceramic.

This invention relates a structure and system for growth factor incorporation which can improve the osteogenic differentiation of hMSCs, for potential bone regeneration and bone growth applications or used alone for bone repair or growth applications. The system comprises a biodegradable polyester, a hydrophilic polymer, a growth factor and optionally a bioceramic.