9 results about "Prosthetic material" patented technology

The present invention relates to a novel dental prosthetic material and a patient-customized dental prosthesis comprising same, the material improving water resistance, reproducing a color similar to an actual tooth, and thus improving the aesthetic appearance even after prosthetic treatment. In addition, patient-customized prosthetic treatment can be performed using a 3D printer on a tooth requiring prosthetic treatment. The material exhibits enhanced physical properties compared to existing photocurable resin compositions and has excellent adhesive strength, thereby preventing a dental prosthesis from detaching after treatment.

The invention belongs to the technical field of medical prosthetic materials, and particularly relates to a zirconia-based medical prosthetic material and a preparation method and application thereof.The preparation method comprises the steps that S1, pretreatment is conducted, specifically, a zirconia preform is subjected to primary high-temperature sintering, then grinding, polishing and primary cleaning are conducted, and then secondary high-temperature sintering and secondary cleaning are conducted; s2, preparation of a surface drug-loading structure: preparing a drug-loading honeycomb porous nano-structure on the surface of the zirconium oxide preform by adopting phosphorylation treatment; s3, loading of metal ions: putting the zirconium oxide material into loading liquid containing the metal ions, reacting in a shaking table at 50-90 DEG C for 5-8 hours, taking out after the reaction is finished, washing and drying to obtain the zirconium oxide-based medical prosthesis material, and drying the zirconium oxide-based medical prosthesis material to obtain the zirconium oxide-based medical prosthesis material. The zirconia-based medical prosthetic material provided by the invention not only avoids the problems of poor wear resistance of PLGA, poor combination of a calcium phosphate coating and color of a dopamine coating, but also realizes slow release of metal ions, thereby promoting osseointegration more effectively.

The invention belongs to the technical field of plastic materials, and particularly relates to a plastic prosthetic material and a preparation method thereof. The preparation method comprises the following steps: (1) pretreating carbon fibers to obtain pretreated carbon fibers; (2) modifying the carbon fiber by using KH792 to obtain silane modified carbon fiber; (3) mixing the silane carbon fiber with N, N-dimethylformamide, continuously adding polyethylene glycol diacetate and a condensing agent, carrying out a heating reaction, and carrying out rotary evaporation to remove N, N-dimethylformamide so as to obtain modified carbon fiber; and (4) uniformly mixing the PEEK powder, the modified carbon fibers and the carboxylated carbon nanotubes, and carrying out mold pressing to obtain the prosthetic material for the plastic surgery department. The prosthetic material for the plastic surgery department is safe to use, high in mechanical property and good in fatigue resistance.

The invention discloses a method and system for intelligently recommending prosthesis parameters in hip joint replacement surgery, and relates to the technical field of hip joint prosthesis parameter recommendation, and the method comprises the steps of 1, information acquisition and analysis, 2, prosthesis material analysis and 3, prosthesis material and parameter confirmation. Personal information, hip joint pathological information, hip joint prosthesis material information and rehabilitation information of each historical patient are sorted and concluded to obtain a medical information set of each historical patient, and a preoperative information set of a target patient is matched with the medical information set of each historical patient; the method comprises the following steps: acquiring a target patient, acquiring a hip joint prosthesis material recommendation table of the target patient, verifying the material parameters of each prosthesis material and the reference parameters of the target patient to obtain a recommended material, and finally compensating the reference parameters based on the correction parameters of the recommended material, thereby improving the hip joint prosthesis matching rate of the patient and the postoperative prosthesis survival rate.

The application discloses a kind of interdental space maintaining material and its processing method, belong to oral prosthetic material technical field.The material includes successively from inside to outside: metal base layer, functional response layer and bioceramic protective layer.The metal base layer uses low sensitization cobalt-chromium base alloy;The functional response layer is distributed on the surface of metal base layer, and it contains microscale energy storage cavity array, and cavity is filled with the pH response type drug-loaded gel consisting of pH sensitive polymer matrix and inorganic mineralization precursor particles;The bioceramic protective layer is coated outside the functional response layer, and has through microporous structure.The application also provides the processing method of the material.The application can intelligently release mineralizing substances under oral acid environment by constructing pH-ion pump bidirectional regulation mechanism, in-situ plugs metal ion leakage and neutralizes acid environment, significantly improves the biological safety, mechanical stability and caries prevention ability of the material, especially suitable for children in mixed dentition period.

The invention belongs to the technical field of medical prosthesis materials, and particularly relates to a medical implant material based on hydrothermal method surface modification and a preparation method and application thereof.The preparation method comprises the steps that S1, zirconium oxide preform surface pretreatment is conducted, specifically, firstly, a zirconium oxide preform is sintered, and then surface grinding, polishing and cleaning are conducted; s2, preparation of the zirconium oxide surface micro-nano structure: putting the zirconium oxide preform into a high-pressure reaction kettle, adding a phosphoric acid solution containing metal ions, putting the high-pressure reaction kettle into a drying oven, reacting for 20-28 hours at 150-170 DEG C, taking out the zirconium oxide implant material after the reaction is completed, cleaning and drying to obtain the medical implant material subjected to surface modification based on the hydrothermal method, and drying to obtain the zirconium oxide surface micro-nano structure. According to the invention, a micro-nano structure doped with different metal ions is successfully constructed on the surface of the ZrO2 preform by adopting a phosphoric acid hydrothermal method, the surface of each doping group shows different micro-nano morphological characteristics, the metal ions on the surface of the material can be slowly released, and excellent surface biological performance is shown.

The application belongs to the technical field of plastic materials, and particularly relates to a prosthesis material for orthopedics and a preparation method thereof. The preparation method comprises the following steps: (1) pretreating carbon fibers to obtain pretreated carbon fibers; (2) modifying the carbon fibers by using KH792 to obtain silane-modified carbon fibers; (3) mixing the silane-modified carbon fibers and N,N dimethylformamide, continuously adding polyethylene glycol diacetate and a condensing agent, heating and reacting, and removing the N,N dimethylformamide by rotary evaporation to obtain modified carbon fibers; and (4) uniformly mixing PEEK powder, the modified carbon fibers and carboxylated carbon nanotubes, and performing mold pressing to obtain the prosthesis material for orthopedics. The prosthesis material for orthopedics prepared by the application is safe to use, has high mechanical properties and good fatigue resistance.

The invention discloses a multi-degree-of-freedom joint movement simulating friction testing machine, and belongs to the technical field of artificial joint performance testing equipment. The testing machine comprises a rack, a thighbone rotation control mechanism, a front-back displacement control system, a tibia rotation control system, an axial force loading control system and a testing platform, and four-degree-of-freedom accurate control over thighbone buckling, front-back displacement, tibia rotation and axial force loading is achieved through cooperation of multiple mechanisms. Complex motion modes and stress characteristics of the knee joints of the human body can be restored. According to YY / T 1426.3-2017 standard design, Chinese motion data characteristics are adapted, a servo motor and servo hydraulic system combined driving mode is adopted, control precision and cost advantages are taken into consideration, the structure is compact, clamping is convenient, a reliable in-vitro simulation test platform can be provided for artificial joint prosthesis material screening, structure optimization and abrasion mechanism research, and the in-vitro simulation test platform is suitable for industrial production. The problems that existing equipment is high in cost, insufficient in freedom degree, poor in adaptability and the like are solved.