78 results about "Fracture union" patented technology

The invention discloses a method and a device for acquiring parameters of an internal fracture fixation system, and relates to the technical field of medical data processing. Constructing a digital model of the skeleton and the surrounding soft tissue based on the three-dimensional scanning image by utilizing a biomechanical principle; using a machine learning algorithm to train the historical case data, and generating a preliminary internal fixed parameter prediction model; applying the preliminary parameters to a digital model for simulation verification, and optimizing the internal fixed parameters to an optimal combination; performing personalized adjustment on the simulation result according to individual differences of patients and experience of clinical doctors; the state of the internal fixation system is monitored in real time in the operation process, and parameter fine adjustment is conducted according to feedback; the fracture healing condition is regularly evaluated after the operation, and the internal fixation parameters are adjusted according to the evaluation result. Through personalized and precise internal fixation parameter setting, a good mechanical repair environment is created for a fracture part, bone cell proliferation and ordered growth of callus are promoted, and the healing time is effectively shortened.

The present invention provides a novel 3D-printed bone plate, belonging to the field of medical device technology. The novel 3D-printed bone plate comprises: a bone plate, which is made by an additive manufacturing process and has a local reinforcement structure design for the reinforcement area. Through a 3D printing strategy with layer-by-layer energy density gradient changes, the density and mechanical properties of key parts are significantly improved, which not only greatly enhances the compression and shear resistance of the bone plate in the local area, but also ensures precise matching with the patient's bones, which is conducive to promoting stability in the fracture healing process. In addition, the design process based on the patient's CT / MRI data ensures that the bone plate can be customized for individual differences, thereby improving the success rate of the operation and the patient's recovery speed.

The invention discloses a titanium-magnesium hollow screw system capable of promoting fracture healing and a manufacturing method. The titanium-magnesium hollow screw system comprises a titanium-based supporting structure and a magnesium filling layer. The titanium-based supporting structure comprises a main body part, the surface of the main body part is provided with an imitated bone trabecula part, and a plurality of bone gaps are formed in the imitated bone trabecula part; wherein bone gaps are filled with the magnesium filling layer, and the magnesium filling layer is combined with the titanium-based supporting structure in a physical embedding mode; the titanium-based supporting structure bears and maintains initial fixation and long-term bearing, so that the strength and the stability of the screw are ensured; the surface imitated bone trabecula and the communicated bone gaps increase the surface area and provide a physical channel for vascularization and bone tissue ingrowth, so that synostosis is promoted; the magnesium filling layer releases magnesium ions after being locally controllably degraded, so that osteogenesis and angiogenesis are favorably stimulated, the local biological environment is improved, instant mechanical support after an operation is ensured, bone healing is promoted through local biological activity release and structural orientation, the healing time is favorably shortened, and the healing quality is favorably improved.

This application relates to a limiting type internal fixation device for femoral neck fractures, which includes a first fixing plate, a second fixing plate provided on the first fixing plate, positioning screws provided on the first fixing plate, compression screw holes provided on the first fixing plate, and positioning holes provided on the second fixing plate. The second fixing plate is not parallel to the first fixing plate. The positioning screws include a base and a screw body provided on the base. The screw body has telescopic movement in the axial direction and swinging movement in the circumferential direction. The number of positioning screws is two. The limiting type internal fixation device for femoral neck fractures disclosed in this application promotes fracture healing by providing slight sliding in the axial direction and ensures the accuracy of the healing position through micro-displacement and automatic reset in the circumferential direction, so as to avoid excessive shortening of the femoral neck and achieve accurate position healing, thereby obtaining high-quality fracture healing and functional recovery.

The invention discloses a fixing device for osteoporotic fracture, which comprises a tightening mechanism and a mounting mechanism, the tightening mechanism comprises a fixing plate and a fixing cylinder, the fixing cylinder is welded on the left side of the fixing plate, and a plurality of partition plates are uniformly welded in the fixing cylinder. According to the fixing device for the osteoporotic fracture, stable fixation is provided for the osteoporotic fracture part through the tightening mechanism, the loosening problem caused by infirm fixation is avoided, fracture healing is facilitated, the ratchet wheel is installed on the outer ring of the rotating shaft to be matched with the pawl, and the fixing stability is further guaranteed; the fixing effect is prevented from being affected by loosening of the lacing rope caused by reverse rotation of the rotating shaft, the fracture position of the leg of a patient can be conveniently installed and fixed through the installation mechanism when the leg of the patient is fractured and the leg is inconvenient to lift, operation of medical staff is facilitated, and through cooperative use of a ratchet wheel and a pawl, the fixing stability is guaranteed, and meanwhile the fixing effect is improved. And the fixing device can be conveniently and quickly loosened in emergency, so that the safety of the patient is guaranteed.

The utility model provides a controllable micro-motion elastic internal fixation device with a bidirectional locking pressing plate structure, and belongs to the technical field of orthopedic medical instruments. Comprising a plurality of bridging rods; and the two end blocks are arranged at the two ends of the bridging rod. A stable frame structure is constructed through the combination of the bridging rod, the end block and the fixing screw, a fracture part is effectively connected and fixed in the axial direction, then a bidirectional locking mechanism is formed through the upper pressing plate, the lower pressing plate, the adjusting lead screw and the locknut, and the fracture part is locked by screwing the locknut. The distance and pressure between the pressing plates can be accurately adjusted and locked, dynamic force generated by factors such as muscle contraction and limb movement can be effectively resisted in the long-term use process, the pressing plates are prevented from loosening or displacing, and it is ensured that the fixing device always keeps the stable fixing effect; and the problems of poor fracture healing or malformation healing and the like caused by fixation failure are avoided.

Disclosed herein is a method for manufacturing a composition promoting recovery from a bone fracture, the method including preparing a mixture of Angelica gigas, Cnidium officinale, Phlomis umbrosa, Astragalus membranceus, Amomi fructus, Citri unshius pericarpium, Drynariae Rhizoma, Codonopsis Pilosulae Radix, frankincense, and myrrh, aging the mixture, smoking the mixture, drying the mixture and grinding the dried mixture into a powder, and extracting a liquid from the powder.

This application provides a method, system, device, and computer-readable storage medium for planning the healing of spinal compression fractures based on multimodal three-dimensional medical images. The method includes: acquiring spinal CT and MR images of the patient; identifying and segmenting the spinal CT and MR images to obtain CT and MR images of the fractured vertebral body at the site of the compression fracture; inputting the CT and MR images of the fractured vertebral body into a preset bone cement anti-leakage planning model to output a bone cement injection anti-leakage planning scheme; wherein the bone cement injection anti-leakage planning scheme includes at least: the viscosity of the bone cement, the injection volume, the injection location, the injection timing, and the injection rate. According to the embodiments of this application, bone cement injection anti-leakage planning can be performed quickly and accurately.

The utility model provides a femoral neck fracture internal fixation device. The femoral neck fracture internal fixation device comprises a main nail, a first auxiliary nail and an anti-skid assembly. A matching through hole is formed in the main nail; the first auxiliary nail is arranged at the matching through hole of the main nail in a penetrating manner, and the first auxiliary nail is arranged in the direction perpendicular to the gravity; the anti-skid assembly is used for limiting displacement of the first auxiliary nail and the main nail. The first auxiliary nail is arranged in the direction perpendicular to the gravity, the first auxiliary nail can provide support for the second bone block, when the first auxiliary nail bears the gravity of the second bone block, the first auxiliary nail cannot move axially, and the first auxiliary nail can further apply counter-acting force to the second bone block with the first bone block as the fulcrum. The first bone block and the second bone block are limited to move beyond an allowable range, and the stability of fracture healing is improved.

The ulna and radius splint comprises a plurality of bonesetting plates, the bonesetting plates are provided with belt holes, the adjacent bonesetting plates are connected in series through the belt holes and soft belts to form a multi-grid-shaped conjoined body, each bonesetting plate comprises an ulna inner plate, an ulna plate, an ulna outer plate, a radialis outer plate, a radius plate and a radialis inner plate which are arranged in sequence, and further comprises a bone separating column which is of a triangular prism structure. The bone separation column is provided with a V-shaped working surface and a second surface, the bone separation column comprises a first bone separation column and a second bone separation column, in a working state, the first bone separation column is arranged between the ulnar outer plate and the radial outer plate, and the second bone separation column is arranged between the ulnar inner plate and the radial inner plate. The invention has the following advantages: 1, the fracture reduction positioning accuracy is high; 2, the positioning stability is high; and 3, fracture healing is facilitated. And 4, the fixing and treatment effects can be improved through the personalized customized bone separation columns.

This invention discloses a piezoelectric sensing adaptive internal pressure fixation bone plate system for treating tibial plateau fractures, belonging to the field of orthopedic implantable medical devices. It includes a bone plate, pressure bolts, and an external control module. The bone plate is available in three specifications according to the Schatzker classification: lateral L-type, medial T-type, and bilateral composite type, with transverse internal pressure holes. The pressure bolts embed a PZT-5H piezoelectric sensing device and have an overload-resistant groove between the head and neck, enabling real-time acquisition of the compressive stress at the bolt-bone interface. The external control module transmits signals wirelessly via Bluetooth 5.0 and uses a PID algorithm to non-contactly drive the bolts via magnetic field coupling to adaptively adjust the compressive stress to 30–50 MPa. The system has two levels of safety protection: 55 MPa coil power-off protection and 80 MPa groove breakage protection. This system eliminates the need for secondary surgery, dynamically maintains optimal stress throughout the fracture healing cycle, with a healing time ≤12.5 weeks, a complication rate ≤4%, and an excellent / good knee HSS score rate ≥88%. It is suitable for Schatzker type I-VI tibial plateau fractures.

The utility model discloses an injectable femoral neck hollow nail device, and relates to the technical field of hollow nail devices, the injectable femoral neck hollow nail device comprises a hollow nail main body, the surface of the hollow nail main body is provided with an external thread, the external thread can pass through a femoral neck fracture line, and a sleeve is arranged in the hollow nail main body. The hollow nail main body can penetrate through a femoral neck fracture line through the external threads, so that pressure can be applied to a fracture end during fracture fixation, a fracture part can be promoted to be tightly attached, micro movement of the fracture end is reduced, a stable environment is created for fracture healing, and growth and healing of callus at the fracture part are facilitated; meanwhile, when the fracture position of the patient is fixed through the hollow nail body, the strength of the hollow nail body can be improved through the sleeve, red marrow and the like can be conveyed through the sleeve, fracture healing is facilitated to be promoted or accelerated, and the risk of internal fixation failure is reduced.

The present invention relates to a composition for the prevention, improvement, or treatment of bone diseases comprising a complex extract composed of deer antler, white soybean, Angelica gigas, and Cnidium officinale as an active ingredient. The complex extract has the effect of promoting the differentiation of bone-forming osteoblasts and bone formation, and promoting the differentiation of bone-resorbing osteoclasts and inhibiting bone resorption at an in vitro level. Furthermore, since it promotes fracture union in a fracture-induced animal model and exhibits a significant recovery effect on fractures, it can be usefully utilized as a health functional food or pharmaceutical related to bone diseases.

The present invention discloses an injectable dual - biomimetic bone adhesive for promoting fracture healing and its preparation method, belonging to the field of biomaterial preparation. Inspired by the underwater adhesion mechanisms of marine mussels and barnacles, it uses biomimetic marine mussel substances (such as tannic acid), biomimetic marine barnacle substances (such as sodium alginate), silk fibroin, calcium chloride, and magnesium particles to form a dual - biomimetic bone adhesive with wet adhesion. Based on the hydrogen bonds, metal - phenol coordination bonds, electrostatic interactions, and β β - sheet protein folding conformations formed among the components, the obtained dual - biomimetic bone adhesive not only has good biocompatibility, excellent wet adhesion, and mechanical properties matching bone tissue strength, can be used for fracture bone fixation and repair, but also has the ability of in - situ gelation and can be directly injected at the injury site. The raw materials used in the adhesive prepared by the present invention are safe and widely sourced. Therefore, it is expected to achieve potential clinical application value in the fixation and repair of bone injuries.

The invention relates to a single-arm orthopedic external fixing and supporting device and an adjusting method thereof, belongs to the technical field of traction equipment, and solves the technical problem of rapid growth of bone tissue in the later stage of fracture healing The single-arm orthopedic external fixing and supporting device comprises a fixing pressurization module, a fine adjustment pressurization assembly and a universal spherical hinge module which are fixedly arranged on corresponding sliding bases respectively, the fixed pressurization module and the universal spherical hinge module are movably connected through the movable connection module, and the fine adjustment pressurization assembly accurately adjusts the distance between the fixed pressurization module and the universal spherical hinge module. According to the device, firm fixation and bone tissue passive stress stimulation are realized in the early stage of bone healing, and the basic functions of a conventional single-arm orthopedic external fixation support frame are met; in the later stage of fracture healing (unscrewing a locking bolt), the fixing and pressurizing module and the universal spherical hinge module can slide back and forth relative to the movable connecting module, stress stimulation of the fixing and pressurizing module and the universal spherical hinge module is stably achieved, bone tissue healing is promoted, and the fracture healing period is shortened.

Devices, systems, and methods for promoting healing and stability for bone fractures. The bone stabilization system may include a variety trauma and / or reconstruction plates and one or more bone fasteners configured to secure the plate to bone. The bone plates may be used for the fixation of fractures and fragments in forefoot, midfoot, and hindfoot applications. The foot fracture plating may be used to create a rigid construct with permanent fixation to promote primary healing and stability.

The invention discloses an axial micro-motion and rigid locking dual-mode switchable fracture external fixation support, and relates to the technical field of orthopedic medical instruments, and the key points of the technical scheme are that the fracture external fixation support comprises two bone needle assemblies; the outer sleeve is connected with one bone needle assembly; the telescopic inner core rod is connected with the other bone needle assembly and is sleeved in the outer sleeve in an axial sliding manner; the elastic buffering assembly is arranged between the outer sleeve and the telescopic inner core rod; the mode switching assembly is arranged on the telescopic inner core rod and can be operably connected with or separated from the outer sleeve; when the mode switching assembly is separated from the outer sleeve, the telescopic inner core rod can axially slide relative to the outer sleeve and act on the elastic buffering assembly. When the mode switching assembly is connected with the outer sleeve, the telescopic inner core rod is rigidly connected with the outer sleeve through the mode switching assembly. Fixing modes can be conveniently switched according to different stages of fracture healing, secondary operation is not needed, and the fracture healing environment is optimized.

The present application relates to an intramedullary nail system with an adjustable electromagnetic healing-promoting function, the intramedullary nail system comprising a main nail, a fixing hole provided at the tail end of the main nail, an electromagnetic device fixed in the fixing hole on the main nail, the electromagnetic device having an adjustment device, the adjustment device adjusting the magnetic field parameters of the electromagnetic device through mechanical adjustment according to the distance between the fracture location and the electromagnetic device; the electromagnetic device can generate a pulsed magnetic field to promote fracture healing. The intramedullary nail system with an adjustable electromagnetic healing-promoting function of the present invention reduces the distance between the electromagnetic device and the fracture / healing location by fixing the electromagnetic device on the main nail, and establishes a one-to-one correspondence between the distance and the magnetic field strength generated by the electromagnetic device, making the application of the device universal and simplifying the operation and adjustment.

The invention provides a novel 3D printing bone fracture plate, and belongs to the technical field of medical instruments. The bone fracture plate is manufactured by adopting an additive manufacturing process and has a local reinforcing structure design aiming at a reinforcing area, and a 3D printing strategy of layer-by-layer energy density gradient change is adopted; the density and the mechanical property of a key part are remarkably improved, so that the compression resistance and the shear resistance of the bone fracture plate in a local area are greatly enhanced, the accurate matching with the bone of a patient is ensured, and the stability in the fracture healing process is favorably promoted; the design process based on the CT / MRI data of the patient ensures that the bone fracture plate can be produced in a customized mode according to individual differences, and the success rate of an operation and the recovery speed of the patient are increased.

The utility model relates to the field of medical instruments, in particular to an external fixing device with a micro-motion assembly and a hydroxyapatite coating fixing nail, which comprises a support, three clamping block assemblies and the micro-motion assembly. The three clamping block assemblies are used for clamping at least one hydroxyapatite coating fixing nail respectively, the micro-motion assembly is configured to output kinetic energy to the second assembly when receiving electric energy, and when the second assembly is in a movable state relative to the support, the micro-motion assembly is used for driving the second assembly to move according to a preset path. The preset path is a swing path and / or a linear path. The broken bone is actively driven through the micro-motion assembly, the second assembly and the hydroxyapatite coating fixing nail clamped on the second assembly, so that the broken bone driven by the second assembly and the hydroxyapatite coating fixing nail clamped on the second assembly can generate fine displacement, and the broken end of the driven broken bone can form stress stimulation, so that the broken bone can be driven to move stably and stably. The fracture healing time is shortened, and the fracture healing treatment efficiency is high.

The invention discloses a method and a system for determining the elastic modulus of an internal fixation block for fracture, and relates to the field of medical instruments, and the method comprises the following steps: building a parameterized biomechanical model, extracting features from the parameterized biomechanical model, and selecting the elastic modulus of the internal fixation block based on a gradient boosting decision tree model. An artificial intelligence algorithm combined with pathological state correction is used for accurately determining the elastic modulus required by the fracture internal fixation block, and the elastic modulus is creatively fused into the physiological state index of a patient to dynamically adjust the weight coefficient. Objective customization of personalized elastic modulus is achieved, it is ensured that the internal fixing block is highly matched with the bone mechanical property of a patient, stress conduction and distribution of a bone fixing interface are effectively optimized, the stress shielding risk is reduced to the maximum extent, fracture healing quality and speed are remarkably improved, complications are reduced, and fixing stability and long-term curative effect are improved. The system is a key breakthrough for intelligent and precise orthopaedic treatment.

The utility model discloses an orthopedic internal fixation steel plate system, and relates to the technical field of medical instruments. The two opposite sides of the steel plate in the thickness direction are provided with a first surface and a second surface capable of making contact with a backbone, the multiple protrusions are arranged on the first surface at intervals in the length direction of the steel plate, and the two opposite ends of the steel plate in the length direction are provided with through holes penetrating in the thickness direction of the steel plate. One end of each limiting piece is provided with a clamping part, the other end of each limiting piece is provided with an insertion part capable of penetrating through the diaphysis cortex, the limiting pieces are in one-to-one correspondence with the through holes and penetrate through the through holes, and the clamping parts are located on the sides, close to the first surface, of the through holes and can be clamped to the steel plate; a plurality of hoop assemblies are arranged corresponding to the convex parts and the clamping parts, in each hoop assembly, a first half-ring hoop and a second half-ring hoop are detachably connected and form a surrounding area capable of surrounding the steel plate and the backbone, and the inner side face of each first half-ring hoop is provided with a groove capable of being connected with the corresponding convex part or the corresponding clamping part in a matched mode. No screw is needed for fixation, bone injury is reduced, and the fracture healing effect is improved.

The invention discloses a two-way fracture internal fixing device, and relates to the technical field of medical instruments, the two-way fracture internal fixing device comprises a fixing plate and fixing nails, the fixing plate is attached to the surface of a broken bone in the axial direction of the broken bone, two sets of fixing nails are arranged on the fixing plate, each set of fixing nails is connected with one broken bone, and a micro-motion gap is formed in the middle of the fixing plate; the micro-motion gap corresponds to the joint of the two broken bones, and the micro-motion gap enables the fixing plate to generate micro-motion deformation. The fixing plate can achieve variable rigidity in a micro-motion gap, then gap micro-motion adjustment at the joint of two broken bones is achieved, rigid fixation is converted into biological adaptation, anatomical structure adaptation and mechanical healing rule adaptation are achieved, enough micro-motion stimulation can be generated, the fracture healing cycle is met, bone reconstruction and development are promoted, and the fracture healing effect is improved. The structure is simple and exquisite, and carrying is convenient.

The present invention provides a fracture-enhancing internal fixation screw, belonging to the field of medical devices. It includes a screw body and a screwing cap fixedly connected to the top end of the screw body. An auxiliary screw fixation assembly for enhancing the fixation stability of the screw body is arranged at the upper end inside the screw body, and a drug-carrying and releasing assembly is arranged at the lower end inside the screw body. By setting the auxiliary screw fixation assembly, in the initial stage of fracture healing, after the absorbable part is decomposed and absorbed, and after removing the connecting cross bar on the screw body, the control rod can be used to drive the auxiliary rod body and the top threaded section to drill into the inner wall of the screw hole of the fracture, and then the top threaded sections on both sides and the auxiliary rod body are used to assist in fixing the screw body, improving the fixation stability of the screw body, avoiding the problem that the anti-rotation ability of the screw body is reduced and the stability is low after removing the connecting cross bar in the early stage of fracture healing, and ensuring the fixation effect of the screw body on the fracture site after removing the connecting cross bar in the early stage of fracture healing.

The utility model relates to the technical field of medical instruments, and provides a child proximal femur screw plate system which comprises a locking plate, a screw, a locking screw and a kirschner wire. The locking plate is used for being arranged on the outer side of the proximal femur, a first connecting hole and a second connecting hole are formed in the locking plate, and the first connecting hole and the second connecting hole are formed in a spaced mode. The at least one screw is inserted and fixed in the first connecting hole; the number of the kirschner wires is at least one, and the kirschner wires are arranged in the second connecting holes in a penetrating mode and extend into the femoral head. The screw and the kirschner wire are arranged in parallel; the locking plate is fixed to the proximal femur through the locking screws. The implanting length of the screw is not larger than the length from the outer side of the proximal femur to the end, close to the femoral head, of the femoral neck. According to the child femur near-end nail plate system, required stability and a micro-motion environment are provided for fracture healing of the femoral neck, and stable fixation of the femoral neck is achieved on the premise that skeletal development of a child is not affected.

The utility model relates to a kind of bone fracture prevention screw, it is related to medical instrument technical field, including screw body and anti-off component, the screw body includes tension head end and anti-off tail end, the surface of tension head end and anti-off tail end is provided with outer thread, the anti-off component is hollow structure, and cavity is formed inside, and the inner surface of cavity is provided with internal thread, and is fixed with anti-off tail end thread connection, bone fracture prevention screw is embedded in bone and is fixed to fracture site. The utility model can make fracture end close contact to the bidirectional sustained pressure of fracture site, improve local blood circulation, provide better mechanical environment for fracture healing, accelerate fracture healing process, reduce the risk of screw loosening, withdrawal and fracture displacement, improve the stability of internal fixation.

The utility model discloses a thighbone inner side supporting frame, and relates to the technical field of medical instruments, the thighbone inner side supporting frame comprises a supporting frame main body, the supporting frame main body comprises a fixing part and a first body which are connected in a bending mode, and the fixing part is used for being fixedly connected with a thighbone; the second body is arranged on the first body, and the second body can slide in the extending direction of the supporting frame body. The second body is arranged and can slide in the extending direction of the supporting frame main body, so that the femoral head can be finely adjusted to a proper position along with the screw and the second body, the wound gap of the femur is reduced, and recovery of the femur is facilitated; the shear stress of the supporting frame body to the femur can be converted into favorable pressure stress, the stability of combined fixing of the supporting frame body and the hollow compression screw is improved, the failure risk of the hollow compression screw in the fracture healing process is reduced, and then the risk that the femoral neck fracture is difficult to heal is reduced.

The invention belongs to the technical field of medical surgical materials, and particularly relates to an implantation instrument. Common metal fracture internal fixation instruments generate artifacts during Micro-CT scanning, and the fracture healing process cannot be observed. The invention provides an implantation instrument which is used for fixing a bone and comprises a supporting part, the supporting part is a carbon fiber rod, and the implantation instrument can dynamically observe the bone mass and the bone microstructure at different time points. The experimental workload is reduced, the number of animals is reduced, working efficiency is improved, and cost is reduced.

The invention discloses a micro-movement fracture internal fixation instrument, and relates to the technical field of medical instruments. The instrument comprises a first strip plate and a second strip plate which can be in sliding fit in the long axis direction of a bone. Each strip plate is locked to the corresponding bone block through a screw with a degradable coating, and the outer diameter of the coating is not smaller than the inner diameter of a plate hole in the initial stage of implantation, so that initial rigid fixation is achieved. The two long strip plates are further fixed to the bone blocks on the opposite sides through middle screws. After implantation, along with gradual degradation of the coating, a gap is generated between the screw and a plate hole, and rigid locking is relieved, so that the two plates can generate controllable relative micro motion along the long axis direction of the bone under physiological load. According to the design, the stability in the early stage of fracture healing is guaranteed, beneficial axial mechanical stimulation can be provided in the middle and later stages, callus formation and fracture healing are effectively promoted, and meanwhile the adverse effect of non-axial micro motion is avoided.