10 results about "Compact Bones" patented technology

The invention relates to the technical field of orthodontic medical instruments, in particular to a dentition tongue side stress application traction device, an anchorage nail of the device can be arranged on the upper jaw palatal side portion of the dentition tongue side, a traction hook can be fixed relative to anterior teeth and extends from the anterior teeth to the dentition tongue side, a guide rod penetrates through a directional catheter located on the dentition tongue side, and the directional catheter is connected with the traction hook. The draw bar is fixedly connected with the draw hook; according to the application, the anchorage nail is arranged on the palatal side part of the upper jaw bone on the dentition tongue side, and the influence of loosening or falling of the anchorage nail on the treatment efficiency is reduced by utilizing the advantage of compact bone in the area; meanwhile, the guide rod penetrates through the directional catheter and is fixedly connected with the traction hook, so that the orthodontic force is strictly applied along the extension direction of the guide rod, and the risk of accidental rotation or inclination of teeth can be reduced; the traction piece is connected with the traction hook and the anchorage nail or is connected with the traction hook and the rear teeth, no additional connecting device needs to be added, the traction piece can be effectively matched with the orthodontic appliance to correct the teeth, the operation process is simplified, and the treatment cost is reduced.

The invention relates to the technical field of bone repair materials, in particular to a horse antler powder support material preparation device and system, and the device comprises an ossification degree pretreatment unit, a crushing unit, a mixing unit, a printing unit and a regulation and control unit; the ossification degree pretreatment unit comprises a transmission table and a controller, a positioning conveying assembly is arranged on the surface of a transmission part of the transmission table, and a detection assembly and a cutting assembly are arranged on a support part of the transmission table; the preparation system comprises an ossification degree pretreatment module, an air pressure crushing module, a proportioning and mixing module, a 3D printing module and a degradation rate regulation and control module. According to the method, ossification degree grading pretreatment is carried out on the raw material antler, precise recognition and directional cutting are carried out on a cancellous bone region, a compact bone mass core is removed, and the problems of active ingredient fluctuation and non-uniform pore structure caused by individual difference of ossification degrees are solved.

Implant drill (1), in particular dental implant drill, comprising a mounting area (10) and a machining area (30), wherein the implant drill (1) extends in a longitudinal direction (L), wherein the distal end regions in the longitudinal direction (L) of the implant drill (1) are formed in particular by the mounting area (10) and the machining area (30), wherein the processing area (30) has at least two processing structures (32), wherein the processing area (30) is designed in such a way as to be characterized by the processing structures (32), that it can remove bone material during a positive rotation around the longitudinal direction (L) and that it can compact bone material during a negative rotation around the longitudinal direction (L), wherein the machining area (30) is limited in the longitudinal direction (L) by a stop flange (60), wherein the processing area (30) has different processing sections (B1, B2, B3, B4) along the longitudinal direction (L), wherein the implant drill (1) has at least three processing sections (B1, B2, B3, B4), wherein the machining sections (B1, B2, B3, B4) form different outer contour slope angles (α1, α3) with the longitudinal direction (L) or are cylindrical around the longitudinal direction (L), wherein the implant drill (1), in particular the machining area (30), has a transition machining section (B3), wherein the transition machining section (B3) forms an outer contour slope angle (α3) with the longitudinal direction (L), and wherein the outer contour slope angle (α3) of the transition machining section (B3) is in a range of 7° to 15°.

The invention provides a bone tissue-imitating TPMS-Voronoi composite structure modeling method, which comprises the following steps of: firstly, delimiting design domains including a cubic design domain and a columnar design domain according to a selected overall dimension, and then forming a tubular design domain of a compact bone and a columnar design domain of a cancellous bone on the basis of the columnar design domain; based on the design domains, establishing a TPMS structure compact bone model and a Voronoi structure cancellous bone model respectively, and finally performing Boolean union operation on a mesh model of the TPMS structure compact bone and a mesh model of the Voronoi cancellous bone structure to form a TPMS-Voronoi composite structure model of the simulated bone tissue. According to the modeling method provided by the invention, the periodic regular structure and the randomly distributed porous structure are fused, the native bone tissue can be matched at the same time in the three aspects of stress environment, body fluid circulation and structural geometric characteristics, and the overall mechanical property of the composite structure is remarkably improved.

The application provides a multilayer degradable porous bone scaffold for bone repair and a preparation method thereof, and is a new structure of a porous bone scaffold based on a three-period minimal surface, comprising an outer layer, an intermediate transition layer and an inner layer, each layer is a porous structure, and the porosity decreases from the inner layer to the outer layer in turn to simulate the gradient porous structure and the gradient mechanical properties of human bone; wherein the thickness of the outer layer is set according to the compact bone thickness of the used part, the thickness of the inner layer is set according to the spongy bone thickness of the used part, and the intermediate transition layer is used for smooth connection of the inner and outer layer porous structures and mechanical properties. Through the multilayer gradient structure design, the application can simulate the gradient porous structure of human bone, realize high adhesion with the real bone structure of human body, improve the bone ingrowth efficiency, improve the bone repair effect, and at the same time has good mechanical support performance and controllable degradation performance.

Methods and devices for delivering bone material are disclosed. The bone delivery device may include a cannula and a cartridge in fluid communication with the cannula, wherein the cartridge comprises a base containing one or more delivery channels configured to receive bone material. The bone material within the delivery channel(s) is compacted to a second diameter smaller than the first diameter. The method includes actuating the compacted bone material from the cartridge through the cannula to deliver the bone material to an implantation site.

The invention provides a multi-layer degradable porous bone scaffold for bone repair and a preparation method thereof, the multi-layer degradable porous bone scaffold is a novel porous bone scaffold structure based on a three-period minimal curved surface, the multi-layer degradable porous bone scaffold comprises an outer layer, a middle transition layer and an inner layer, each layer is of a porous structure, and the porosity is sequentially reduced from the inner layer to the outer layer; the gradient pore structure and the gradient mechanical property of the human skeleton are simulated; wherein the thickness of the outer layer is set according to the thickness of compact bone of a used part, the thickness of the inner layer is set according to the thickness of cancellous bone of the used part, and the middle transition layer is used for smooth connection of pore structures and mechanical properties of the inner layer and the outer layer. Through the design of a multi-layer gradient structure, a gradient pore structure of a human skeleton can be simulated, high fitting with a real bone structure of a human body is realized, the bone ingrowth efficiency is improved, the bone repair effect is improved, and meanwhile, good mechanical supporting performance and controllable degradation performance are achieved.

A humeral implant is provided. The implant includes a humeral stem including a plurality of fins. At least one fin comprises a serrated bottom edge. A radial distance between an inner bottom edge of the at least one fin and a centerline of the humeral implant increases along a distal length of extension of the at least one fin. At least the serrated bottom edge of the at least one fin is configured to cut into and compact bone of the metaphysis of a humerus toward relatively denser cancellous bone of a peripheral portion of the humerus when press-fit therein, thereby providing sufficient press-fitting for cementless fixation of the humeral stem into the humerus. Related kits and methods are also provided.

Methods and devices for delivering bone material are disclosed. The bone delivery device may include a cannula and a cartridge in fluid communication with the cannula, wherein the cartridge comprises a base containing one or more delivery channels configured to receive bone material. The bone material within the delivery channel(s) is compacted to a second diameter smaller than the first diameter. The method includes actuating the compacted bone material from the cartridge through the cannula to deliver the bone material to an implantation site.

An improved orthopedic broach used to prepare an intramedullary canal of a patient's bone such as, for example, a patient's femur, to receive an orthopedic implant such as, for example, a hip stem implant. The broach has differential teeth or tooth patterns. In one preferred example, the broach includes three different types of teeth including diamond teeth, compaction teeth, and extraction teeth. The different teeth patterns being specifically arranged on the sides of the broach to optimize bone removal and bone compaction for a subsequently implanted hip stem implant. In addition, the different teeth patterns and locations enhancing rotational stability. As such, the broach is configured to compact bone in certain areas while removing bones in other areas, all while maintaining broach rotation.