Bone Substitute for Training and Testing
Training and testing of orthopaedic procedures and devices. This material can be used as a non-Biohazard replacement for real bone and can be manufactured to provide consistent performance. Can be used to develop and test new procedures, devices, and tools for use on bone.
Based on the failure to achieve the equivalent drilling loads found in human bone when using various fillers in a resin matrix, the new concept would use a sintered ceramic material with known porosity to represent the skeletal structure of bone. The choice of ceramic material, starting particle size, degree of sintering, and final pore size, will affect the drilling and cutting behavior of the resultant bone model material. The sintered porous ceramic will be vacuum infiltrated with a resin (epoxy or urethane) to produce the completed material. The result will be an interpenetrating network of two materials that more closely approximates the actual structure of bone. The volume ration of ceramic to resin and the hardness of the ceramic can be tailored to match the drilling and cutting properties desired in the model material. The material should also behave mechanically more like real bone under loading and during fracture. A bone substitute that drills and cuts like bone for use in training and testing comprising an inner core of a foamable polymer or other soft material and an outer shell of a polymer such as an epoxy resin with a particulate filler such as aluminum oxide or silicon carbide added thereto together with, in some cases, titanium oxide to form a slurry for casting or molding around the inner core. Also provided is a method for making the bone substitute.
Patent Status: U.S. patent(s) 6,116,911; 6,471,519 issued.CONTACT:
Mr. K. Chao
Phone: (443) 778-7927