248 results about "Osteon structure" patented technology

Various embodiments of implant systems and related apparatus, and methods of operating the same are described herein. In various embodiments, an intermedullary implant for interfacing with a bone structure includes a web structure, including a space truss, configured to interface with human bone tissue. The space truss includes two or more planar truss units having a plurality of struts joined at nodes. Implants are optimized for the expected stress applied at the bone structure site.

The invention relates to the technical field of osteoporosis diagnosis, and discloses an osteoporosis diagnosis method based on image recognition. The method comprises the following steps: acquiring bone density image data of a target object and bone structure image data of a target area based on medical imaging equipment, and determining a bone trabecula distribution condition of the target area according to the bone structure image data; constructing a three-dimensional bone mineral density model of the target object according to the bone mineral density image data, and determining an image analysis strategy by combining the three-dimensional bone mineral density model and the bone trabecula distribution condition; and an image analysis module acquires bone structure feature data of the target area according to the strategy, and identifies the bone density grade and the osteoporosis degree of the target area according to the feature data to obtain diagnosis data. According to the method, related data of the bone mineral density and the bone structure are integrated, comprehensive analysis is carried out in combination with the image recognition technology, an efficient and reliable new mode is provided for clinical diagnosis, the accuracy and objectivity of osteoporosis diagnosis are improved, and misdiagnosis and missed diagnosis are reduced.

Methods are described for conducting minimally invasive medical interventions utilizing instruments and assemblies thereof to stabilize and / or fixate a dysfunctional sacroiliac (SI) joint. In one embodiment, a defect creation assembly is advanced from a posterior approach into the SI joint and configured to create pilot SI joint opening; portions of which being disposed in the sacrum and ilium bone structures. After the pilot SI joint opening is created, a prosthesis is press-fit into the pilot SI joint opening, wherein the pilot SI joint opening transitions to a larger post-prosthesis insertion SI joint opening and the prosthesis is securely engaged to the sacrum and ilium bone structures.

The invention relates to the technical field of model construction, in particular to a method for creating an image recognition model based on clinical disease data integration. The method comprises the following steps: acquiring a medical clinical orthopedic image set; the bone density and the bone form of the medical clinical orthopedic image set are extracted, bone structure division is carried out on the medical clinical orthopedic image set, bone structure division images are generated, and the bone structure division images comprise large bone structure images and small bone structure images; analyzing the bone layer thickness of the big bone structure image and performing physical layer thickness compensation reconstruction on the big bone structure image to generate big bone middle virtual slice data; and performing detail guide reconstruction on the small bone structure image to generate small bone fracture texture reconstruction data. According to the invention, through image resolution enhancement, multi-modal data integration, motion simulation and optimization model training, the accuracy of skeleton image dynamic identification is improved.

An orthopedic staple system and orthopedic staple are configured to facilitate bone healing through dynamic and adjustable compression. The system comprises the orthopedic staple having a bridge portion and one or more legs that anchor into bone structure. The bridge portion is configurable to include compression features, comprising a pre-compressed chevron, an “S” shaped deformable path, or other suitable geometries to enable active post-operative compression. The staple can be configured to accommodate a single screw or multiple screws, which interact with the bridge to apply targeted compressive forces. Screws can be seated in either fixed or translatable pockets within the bridge, facilitating variable angle adjustments and bone remodeling. This system is optimized for minimally invasive surgical applications, promoting healing and integration, and enhancing overall patient outcomes.

A hardenable (e.g. dental) compositions is described comprising an encapsulated material. The encapsulated material comprises a basic core material and an inorganic shell material having certain viscosity criteria. Also described are dispensing devices and kits are described comprising a hardenable (e.g. dental) composition comprising a liquid material and an encapsulated material wherein the encapsulated material comprises a basic core material and an inorganic shell material comprising a metal oxide surrounding the core. The dispensing devices and kits can facilitate the methods of applying the hardenable composition. The hardenable or hardened (e.g. cured) composition can provide various technical effects such as a delayed release of a basic core material, a delayed increase in basicity, promoting remineralization of a tooth or bone structure, and increasing the average alkaline phosphatase (ALP) activity of pulp cells. In some embodiments, the composition is a dental (e.g. sealant) composition for application to a tooth structure.

The invention provides a numerical control machine tool spindle vibration real-time monitoring and automatic restraining method which comprises the steps that spindle vibration parameters of a titanium alloy artificial hip joint femoral stem bionic structure in the numerical control machine tool machining process are obtained, the vibration parameters comprise the vibration frequency and the vibration amplitude, and meanwhile porosity distribution information of a machining area is collected; according to the porosity distribution information, the processing area is divided into a surface layer loose bone structure area and a deep layer compact bone structure area, vibration parameters of different areas in the processing process are extracted respectively, and the mapping relation between the vibration parameters and porosity distribution is established; and according to the vibration parameter change rule of the deep compact bone structure area, a collaborative change model of the vibration parameters and the cutting state is established, and the vibration trend of the main shaft during machining in the low-porosity area is predicted and obtained.

The present invention relates to an implant fusion device and a method of manufacturing an implant fusion device. More particularly an orthopedic or spinal implant configured to be implanted between adjacent vertebrae or within a gap in a bone or between bones, the device having a manufactured body structure simulating the physical characteristics of trabecular bone, but with improved osteoinductive features on the exterior surface wherein the device is fabricated using 3D printing. Alternatively, the implant may be made through 3D printing in a manner that results in a relatively or completely solid structure, but with a surface that mimics trabecular bone structure.

A joint socket (2) for a joint prosthesis (1) that can be fixed in a bone structure (6) and has a socket insert (3) for receiving at least a partially spherical joint body, wherein the joint socket (2) has at least one projection (7) facing the bone structure (6) and designed to engage in a groove-shaped recess (9) of the bone structure (6) that is radially spaced from a recess (8) for the socket insert (3) in the bone structure (6), which surrounds the socket insert (3) circumferentially, in particular concentrically, and wherein the projection (7) has at least a partially convex outer surface (10) and a concave inner surface (11) so that the projection (7) can be inserted into the groove-shaped recess (9) in a form-fitting manner with the outer surface (10) and the inner surface (11), characterized in thatthat the socket (2) has a retaining frame (14) with a passage width (D) that is variable, in particular against an elastic restoring force, and is less than the great circle diameter of the socket insert (3), and two projections (7) which are spaced apart from each other in the circumferential direction within an annular area limited by the outer contour and by the inner contour, and the retaining frame (14) in turn has two projections (7') which are connected flush with the two projections (7) of the socket (2).

The invention relates to the technical field of bone biomechanical simulation, and discloses a bone biomechanical modeling method and system based on a multi-modal image, and the method comprises the steps: S1, collecting a CT image and an MRI image of a to-be-detected bone structure, and generating a multi-modal image; s2, adopting a depth variation inference algorithm to extract common features of the multi-modal images, adopting a generative adversarial network algorithm to optimize the common features, and performing information fusion on the multi-modal images to generate comprehensive image data; s3, reconstructing a three-dimensional bone structure model based on the comprehensive image data; s4, simulating mechanical property parameters of the three-dimensional bone structure model under different external loads and physiological states by adopting a nonlinear finite element method based on the three-dimensional bone structure model, and outputting mechanical properties of bone tissues; and S5, based on the three-dimensional bone structure model and the mechanical characteristics of the bone tissue, generating a personalized bone biomechanical model by using a depth variation inference algorithm. According to the method, an accurate personalized bone biomechanical modeling scheme can be provided.

The invention relates to a fixation element (1) for the osteosynthesis of several bones or bone regions (2, 3) that, for example, adjoin one another along a fracture (5). For this purpose, the fixation element (1) has at least one hollow cylindrical projection that can be inserted into a groove-shaped recess in the bone structure (4) extending over both bone regions (2, 3). Because the holding force of the fixation element (1) acts parallel to the surface of the bone structure due to its ring shape, the bone regions (2, 3) can be fixed against each other with the desired compression even without the use of an osteosynthesis plate, requiring only a shallow depth in the bone structure (4).

The invention discloses a three-dimensional CBCT synthetic CT image model fusing feature enhancement and bone structure constraint and a method, and relates to the technical field of medical information. The model fuses a medical image generator of Resnet and a medical image generator of VIT, the Resnet is used for extracting local features reflecting image structure details, and the ViT is used for capturing global features reflecting image long-range dependency; global and local features are fused through a compression channel, so that the network can pay attention to local details and capture wide context information at the same time; in addition, according to the model FEB-CycleGAN, a bone profile mutual information loss function is introduced to constrain the structural similarity between the original CBCT and the synthetic CBCT, so that the synthetic CT has a better structure retention characteristic. According to the method, the effectiveness and design rationality of the model are comprehensively verified through experiments such as image quality evaluation, ablation, dose comparison and sensitivity analysis.

The invention relates to the technical field of medical implants, in particular to a 4D printing-based porous Niti alloy bionic bone gradient structure construction method, which comprises the steps of patient bone data acquisition, bionic gradient model design, NiTi powder preparation, 4D printing, thermal treatment activation of memory effect, surface functionalization treatment and mechanical / biological performance test. The method is characterized by comprising the following preparation steps: accurately acquiring bone structure data through CT / MRI, combining Mimics pretreatment and UG / NX modeling, designing aperture and porosity for differentiation of cortical bone (low porosity of 30%-40%) and cancellous bone (high porosity of 50%-70%), simulating typical load working conditions through ANSYS, enabling the elastic modulus (3-15 GPa) and compressive strength (80-200 MPa) to be close to natural bone, and finally obtaining the bone structure data through the CT / MRI, the pore diameter and porosity of the cortical bone (low porosity of 30%-40%) and the porosity of the cancellous bone (high porosity of 50%-70%). According to the design, the elastic modulus difference between the implant and the host bone is remarkably reduced, the bone resorption problem caused by stress shielding is avoided, meanwhile, continuous porosity transition is achieved through the power gradual change technology, and the structural stability under the complex load is improved.

The invention discloses an orthopedic surgery navigation drilling and implant placement intention real-time optimization method based on multi-modal perception, and relates to the technical field of computer-aided surgery, man-machine interaction and intelligent medical equipment. Multi-modal signals such as electroencephalogram, eye movement and myoelectricity of a doctor are collected in real time through XR glasses and an intelligent surgical drill; and inputting the pre-trained micro-world model to generate a current intention vector and predict a future bone structure trajectory. The intention level is judged by calculating the energy distance between the intention and the master template and an emotional value function: when the intention meets the master level condition, the system automatically generates an XR green optimal path and assists in operation; and when the intention is identified as the risk intention, triggering the skykeeper system to lock the equipment and send out an alarm. The system supports a data federation learning evolutionary model, and immediately destroys an original multi-mode signal after encoding to guarantee data security. According to the invention, the real-time monitoring, evaluation and guidance of the operation intention are realized, and the accuracy and safety of the operation are improved.

The invention relates to a bone plate and a bone plate system, a through hole is formed in the bone plate, a plurality of clamping units extend from the hole wall surface of the hole to the center of the hole, and the multiple clamping units are arranged at intervals in the circumferential direction of the hole; one side, far away from the hole wall, of each clamping unit is provided with an end part, and each end part is provided with at least two clamping parts which are arranged at intervals; wherein the clamping part of at least one clamping unit is used for being clamped with the thread groove of the fixing piece. When the bone lamella and the bone lamella system are used for fixing and repairing a fractured bone structure, the bone lamella is firstly abutted against the bone structure, and then the fixing piece is screwed, so that the locking rod part of the fixing piece penetrates through the hole and is fixedly connected with the bone structure. Meanwhile, in the screwing process, the at least two clamping parts on each clamping unit can be clamped in the threaded grooves of the fixing pieces, the clamping units and the threaded grooves of the fixing pieces are locked stably, the situation of locking failure is not prone to occurring, the rehabilitation treatment effect of the bone structure after fracture is good, and the period is short.

The invention discloses an engineering construction composite artificial bone based on architectural engineering and a manufacturing method thereof.The engineering construction composite artificial bone comprises a bioactive material and a mechanical supporting scaffold, the bioactive material serves as a main body, the mechanical supporting scaffold is contained in the bioactive material, and the bioactive material and the mechanical supporting scaffold are tightly combined to form an artificial bone tissue complex; the mechanical support bracket can provide mechanical support for the artificial bone tissue complex so as to meet the load requirement in the bone repair process. The artificial bone tissue complex can further achieve one or more functions through surface modification and / or a carrying structure used for carrying a bone growth promoting material release system and / or a drug release system arranged in the artificial bone tissue complex so as to meet the clinical requirements of anti-inflammation, anti-infection, anti-tumor, anti-osteoporosis, bone integration promotion and the like. The bone integration performance and mechanical performance of the material are considered, and a new scheme is provided for large-area bone defect repair, bone structure filling and supporting and parts needing long-term load bearing.

A medical device for penetrating an anatomic structure, e.g., a bone structure, including a processing unit programmed to execute one or more statistical algorithms, e.g., Bayesian-based perforation detection algorithms, with electrical conductivity measured during penetration of an anatomic structure as an input to detect a breach condition, e.g., a spinal canal perforation, based on the measured electrical conductivity. The medical device may include a drill bit having sensing capabilities coupled to the distal end of a robot arm via a power drill unit mounted on the robot arm. The power drill unit may cease transmission of rotary motion to the drill bit upon detection of the breach condition.

The utility model provides a novel shapewear which comprises a shapewear body, cloth is sewn on the back of the shapewear body, and a strip-shaped cavity is arranged between the cloth and the shapewear body. The device further comprises supporting bone structures, the supporting bone structures are inserted into the strip-shaped cavities, each supporting bone structure comprises a cloth bag and fish scale bones made of memory alloy, a plurality of fish scale bone cavities are formed in each cloth bag, and the supporting bone structures are inserted into the fish scale bone cavities. The fish scale bone made of memory alloy has a shape memory function, the supporting position and angle can be flexibly adjusted according to the sitting posture habit, the activity requirement and the physical condition of a user, and personalized supporting experience is provided. The supporting bone structures are inserted into the strip-shaped cavities to be matched with the fish scale bone characteristics, the back curve is better attached, uniform supporting force is provided, local pressure is prevented from being too large, and the comfort degree is improved. Reasonable supporting can help a user to keep a correct sitting posture, the problems of poor postures such as scoliosis and humpback are prevented, and body health is promoted.

The utility model relates to the technical field of medical auxiliary instruments, and discloses a pair of fracture reduction nailing forceps which comprises a lower clamp, a half-thread bolt penetrates through an internal thread of the lower clamp, and a base, a fixed rotating shaft, a limiting block and a limiting rod penetrate through a surface thread of the half-thread bolt. The operating table guardrail fixing device is reasonable in structure, the operating table guardrail is clamped through the upper clamping plate and the lower clamping plate so that the device can be fixed, the effect that the angle of the device can be adjusted in multiple directions firstly, then the device is fixed to the operating table guardrail, and then an operation is conducted is achieved; according to the fracture reduction surgery, bone structures at the two ends of a patient need to be placed at proper positions and then fixed, by rotating a connecting bolt, a doctor needs to continuously clamp an upper clamp in the fracture reduction surgery, in this way, the device needs to be fixed by a specially-assigned person, and a cleaning roller is attached to the inner wall of the upper clamp by rotating a driving shaft base; and impurities are remained on the inner walls of the upper clamp and the lower clamp after the operation of the device.

The invention discloses a pelvic cavity tissue implantation teaching model body and a teaching evaluation method, and the model body comprises a pelvic cavity shell model body which is used for simulating an external anatomical structure of a human pelvic cavity and can be detached into two parts which are in bilateral symmetry, and the interiors of the two parts respectively comprise pelvic bone structures; the target region endangered organ die body is arranged in a space formed by folding the left part and the right part of the pelvic cavity shell die body and is used for simulating a real target region tissue and a surrounding organ at risk, and two parallel gaps which are spaced at a fixed distance are formed in the die body; the coordinate paper acquisition system comprises two pieces of coordinate paper which are arranged in parallel, and the two pieces of coordinate paper are respectively arranged in two parallel gaps on the target region endangered organ mold body and are used for recording the spatial position information of the implanting needle; and the connecting handle is detachably connected with the target region endangering organ die body through a first standardized interface, and a whole formed by connecting the target region endangering organ die body and the connecting handle is detachably connected with the left part and the right part of the pelvic cavity shell die body through a second standardized interface.

The invention discloses a manufacturing method of a snake bone structure and a flexible snake bone structure, and the method comprises the steps: fixing a hollow tube with a preset length, and determining the punching position of the end face of the tube wall of the hollow tube; punching is conducted from one side of the end face of the pipe wall in the direction parallel to the axis of the hollow pipe, and a pre-punched pipe with a rope hole is obtained; wherein the rope hole is located in the pipe wall of the hollow pipe; laser cutting is conducted on the pipe wall of the pre-trepanning pipe to obtain a plurality of joint units which can not be separated and combined in sequence, and redundant materials which are cut off are removed, so that the adjacent joint units can move relatively. Thus, the rope hole is formed in the pipe wall of the hollow pipe, the inner wall of the rope hole is smoother, abrasion to the traction rope can be reduced, and the service life of the medical instrument adopting the snake bone structure is further prolonged.

The application discloses a bone age prediction method and system based on a multi-modal large model and a computer readable storage medium, belongs to the technical field of artificial intelligence and medical image processing, and comprises the following steps: fusing a left-hand DR image and clinical indexes through an end-to-end mode, constructing a multi-modal large model fine-tuned according to a bone age field, and outputting image-observed description of each bone in a left-hand wrist and bone-by-bone structured results of maturity levels; calculating a total bone age value through a scoring rule of a bone age evaluation standard, and generating and outputting a bone age evaluation report containing the bone-by-bone image-observed description, the maturity levels and the total bone age value. The application solves the problems of insufficient utilization of clinical indexes, heavy report writing burden, easy hallucination of model output and insufficient compliance of bone age calculation in the prior art, improves the accuracy of bone age prediction, clinical compliance and evaluation efficiency, and can be widely applied to hospitals, primary medical institutions and children growth and development screening scenes.

This invention provides a pelvic floor support structure model and modeling method based on three-dimensional data to assist in judging the condition of pelvic floor ligaments and to perform physical simulation. To solve the above-mentioned technical problems, this invention provides the following technical solution, including: a bone structure, which includes the hip bone and the coccyx, which together form a pelvic support structure, with the inner side of the hip bone and the coccyx forming the pelvic space; an organ structure, which includes the following model structures, including models of the uterus, bladder, vagina, and rectum located in the pelvic space; and a ligament structure, which includes the cardinal uterine ligament connecting the uterus to the hip bone, the uterosacral ligament connecting the uterus to the coccyx, and the round uterine ligament, which connects one end to the upper end of the uterus and extends obliquely upward at the other end.

The mold core casting mold structure comprises an outer mold and a sand core which are horizontally arranged, and the sand core is horizontally arranged in an inner cavity of the outer mold; the sand core comprises a molding sand structure and a core bar structure, the core bar structure is embedded in the molding sand structure, and the core bar structure further comprises a core bar body and a plurality of reinforcing ribs which are fixedly connected to the outer surface of the core bar body and are arranged in the axial direction of the core bar body; a cavity with a transverse casting mold is formed between the sand core and the inner cavity; according to the mold core casting mold structure, at least two pouring channels are formed in the two sides of the upper portion of an outer mold, and the pouring channels are communicated with end openings in the two sides of a mold cavity respectively. According to the mold core casting mold structure provided by the invention, molten iron can be poured into the ports on the two sides of the mold cavity at the same time, and the unique design of the core bar structure is matched, so that the pouring speed of the high-temperature molten iron is increased, and the temperature uniformity of the molten iron in the mold cavity can be ensured; the problem that a sand core with a large height-diameter ratio and an ultra-long length is prone to deformation due to uneven heating in a high-temperature molten iron environment is effectively solved.

The present invention provides an intramedullary nail aimer and a surgical instrument box containing the same, belonging to the technical field of surgical instruments. The intramedullary nail aimer comprises a proximal aiming module, an adjustment module, and a distal aiming module connected in sequence; the adjustment module comprises a first adjustment block and a second adjustment block; the proximal end of the first adjustment block is connected to the proximal aiming module, the distal end of the first adjustment block is rotatably connected to the proximal end of the second adjustment block, and the distal end of the second adjustment block is connected to the distal aiming module. The intramedullary nail aimer has a simple structure and is easy to use. It can rotate when aiming at the distal end of the intramedullary nail, and can meet the needs of aiming at various angles of intramedullary nail holes. In addition, the intramedullary nail aimer has a stable structure and is detachable, and can be connected to the distal aiming module according to surgical needs. The rotation angle and vertical position of the intramedullary nail can be adjusted to meet the various needs of people of different heights, people with different bone structure curvature, etc.

The present invention provides an osteotomy guide device, comprising: a base connected to a bone structure; a first end of a first guide plate connected to the base, a first osteotomy groove being provided on the first guide plate; a first end of a second guide plate being arranged adjacent to the first end of the first guide plate, a second end of the second guide plate being hingedly connected to the second end of the first guide plate, a second osteotomy groove being provided on the second guide plate, and an angle between the second guide plate and the first guide plate being adjustable; an angle adjustment structure being arranged between the first guide plate and the second guide plate, the angle adjustment structure being capable of adjusting the angle between the first guide plate and the second guide plate; a first positioning column being detachably connected to the first guide plate, a second positioning column being detachably connected to the second guide plate, and when the second positioning column is mounted on the second guide plate, one end of the second positioning column protrudes downward from the second guide plate. The technical solution of the present application effectively solves the problem that the osteotomy guide plate in the related art cannot meet individual differences and thus affects the effect of prosthesis implantation.

Methods and devices for plugging a hole bone are disclosed. The bone plug device may include a polymeric mesh structure and a first and a second solid polymeric structure mounted or formed onto a first and a second corresponding leaflet of the polymeric mesh structure. When inserted into a hole in cortical bone, the polymeric mesh structure moves from an open configuration to a closed configuration, reducing the diameter of the polymeric mesh structure and causing the first solid polymeric structure to contact the second solid polymeric structure, conforming bone plug device to the hole. The polymeric mesh structure is configured to mimic cancellous bone structure and porosity to encourage cancellous bone ingrowth.

Various embodiments of implant systems and related apparatus, and methods of operating the same are described herein. In various embodiments, an implant for interfacing with a bone structure includes a web structure, including a space truss, configured to interface with human bone tissue. The space truss includes two or more planar truss units having a plurality of struts joined at nodes. Implants may include biodegradable polymer particles contained within biocompatible fibers. The biodegradable polymer particles may include bone growth promoting agents that are released as the particles degrade over time.

The present invention relates to a system and method for controlling the motion of a multi-axis robot to perform surgery on at least the spinal region within the human body. The system includes control and software coding to move the robot in a desired pattern to complete the surgery, which may include the removal of bone, intervertebral disc and tissue, and may also include the insertion of hardware for fusing adjacent bony structures.

The utility model provides a snake bone tube and endoscope belongs to snake bone structure technical field, including: at least two snake bone unit, its both ends respectively form insertion end and installation end, the insertion end is provided with the rotatory projection, the installation end is provided with the rotatory recess, the rotatory projection is matched with the rotatory recess, the rotatory projection is equipped with the rotatory recess, the rotatory recess is equipped with the rotatory projection, the rotatory recess is equipped with the rotatory projection, and the rotatory projection is equipped with the rotatory recess. In every two adjacent snake bone units, the rotating protrusion of one snake bone unit is embedded into the rotating recess of the other snake bone unit so that the two snake bone units can rotate relatively, and when the snake bone pipe is pulled out of the human body, the pulling-out direction extends from the insertion end to the installation end. The snake bone pulling-out device has the advantages that even if the rotating protrusions are broken and the spines rise upwards, the snake bone can be pulled out of the body smoothly, and fragments of the raised protrusions can be smoothened in the forward direction instead of upwarping in the reverse direction and stabbing the human body.