49 results about "Diaphysis" patented technology

The application relates to the technical fields of medical image processing and artificial intelligence, and provides a bone age evaluation method and system based on an AI model and a bone age instrument. The left wrist X-ray image of a subject detected in the bone age instrument is acquired, and the demographic information of the subject is recorded. The detected left wrist X-ray image is pretreated through gray standardization, noise filtering and a self-supervised learning model. The Vision Transformer is used to extract the distal radius epiphysis and metaphysis width ratio, the third metacarpal metaphysis length and the auxiliary ossification point maturity grading skeletal features, and the multi-modal data fusion is carried out with the demographic information. The multi-layer perception model is used to predict the fused multi-dimensional bone age related data, and a bone age evaluation report is output, so that the error in the bone age prediction of children and adolescents is effectively reduced, and the detection efficiency is improved.

The present application relates to the technical field of medical image processing, and provides a knee femur and tibia segmentation method based on region growing, comprising the following steps: S1, acquiring knee medical images; S2, selecting a growth seed point; S3, coarsely segmenting the knee medical images to obtain knee stem data; S4, finely segmenting the knee medical images to obtain knee connection data; S5, fusing the knee stem data and the knee connection data to obtain knee femur and tibia image data with complete contours; S6, coarsely filling the knee femur and tibia image data to obtain knee femur and tibia image data after coarse filling; and S7, iteratively filling holes in the knee femur and tibia image data by using a three-dimensional sliding window, so as to obtain image data that is consistent with the surrounding data in shape, position and completeness and smoothness. The present application solves the problems of slow segmentation speed, unstable segmentation effect, incomplete segmentation and adhesion in preoperative planning of knee replacement surgery.

The invention discloses an optimization method, device and equipment of a biodegradable bone fracture plate and a storage medium, and is applied to the technical field of medical instruments, and the method comprises the following steps: constructing a finite element model of femoral shaft fracture; in the finite element model, applying a dynamic biomechanical load simulating a human body walking cycle; the stress level of the bone fracture plate and the displacement level of the fixed thighbone are used as optimization targets, and multi-dimensional parameters of the bone fracture plate are optimized; delimiting a safety area of the bone fracture plate according to the optimized bone fracture plate design parameters; according to the method, the technical steps of base material type selection and process optimization, finite element model construction and dynamic load application, multi-dimensional parameter optimization, safety area demarcation and personalized adaptation and the like are organically combined; the technical problems of secondary operation, stress shielding, high biological safety risk, poor adaptability, high engineering difficulty and the like of a traditional bone fracture plate are effectively solved.

The utility model discloses a metal 3D printing porous bone induction structure tibial prosthesis, which comprises a diaphysis prosthesis, a bone fracture plate and an intramedullary nail, the diaphysis prosthesis is designed according to the anatomical form of the focus part of a patient, the diaphysis prosthesis comprises a solid framework and a porous structure, and a cavity is arranged in the diaphysis prosthesis; the at least two bone fracture plates are connected to the two ends of the diaphysis prosthesis in the tibia direction respectively, and the at least two bone fracture plates are connected with the tibia near end and the tibia far end through screws respectively. The tibia near end comprises a first medullary cavity, the tibia far end comprises a second medullary cavity, the intramedullary nail penetrates through the first medullary cavity, the cavity and the second medullary cavity, and the two ends of the intramedullary nail are connected with the tibia near end and the tibia far end through screws respectively. The utility model can solve the problems of incapability of realizing rapid healing, poor initial stability and poor long-term stability in the existing bone defect reconstruction.

This invention discloses an automatic measurement method and system for the Cobb angle of scoliosis based on an improved YOLOv8n-obb model. The method includes acquiring a spinal image (containing several vertebrae), inputting the spinal image into a pre-trained deep learning model based on an improved YOLOv8n-obb model, and outputting the positions of several vertebrae. The deep learning model includes a backbone network, a cervical network, and a head network. The backbone network is a multi-scale convolutional module combining C2f, DCNv2, FADC, and SPPF, used to acquire multi-scale features of the spinal image. The cervical network is a feature fusion module combining DSS, an attention layer, and a sampling layer, used to perform feature fusion on the multi-scale features. The head network includes multiple detection heads, used to perform rotational target detection based on the multi-scale features fused to obtain the positions of several vertebrae, and then obtaining the Cobb angle based on these vertebrae positions. This invention uses a deep learning model improved by YOLOv8n-obb to perform rotational target detection on the vertebrae positions, thereby predicting the Cobb angle of scoliosis.

The application discloses a kind of biomimetic composite scaffold with periosteum-cortical bone-cancellous bone structure and its preparation method and application.The scaffold is assembled by independent periosteum biomimetic scaffold module and independent bone trunk biomimetic module.The periosteum biomimetic scaffold module is cylindrical tube structure hydrogel, loaded with zinc silicate particles and periosteum related cells, with the biological functions of promoting cartilage differentiation, secreting nerve and vascular factors and synthesizing periosteum matrix proteins.The bone trunk biomimetic scaffold module is cylindrical bioceramic, with multiple vertical pipes embedded in the dense layer of outer wall to simulate cortical bone, and with staggered structure inside to simulate cancellous bone.Animal experiments show that the biomimetic composite scaffold can effectively promote the integrated regeneration of bone trunk and periosteum in rabbit radial critical size defect model.Therefore, the application provides a new solution for the biomimetic design and regeneration repair of bone tissue engineering.

Within examples, a surgical device with an embedded sensor system for performing hip replacements is described. This device mitigates fracturing of the mid metaphyseal / diaphyseal region of the femur, and ensures adequate press-fit of the component into the bone. The device relays information regarding forces experienced by the patient's bone to a separate data acquisition device and displays it on an interface. This information is used by the surgeon to determine the force present inside of the patient's bone during broaching, and can then be used to provide better care, and mitigate fractures due to overloading in the bone.

A femoral intramedullary device is capable of treating a variety of femoral bone fractures. The device includes an intramedullary nail capable of antegrade or retrograde insertion into the femur and having a shank long enough to extend into the shaft of the long bone and reach the corresponding distal area or proximal area and sockets located intermediate the ends of the shank for receiving anchoring pins or screws extended transversely or radially from the shaft of the long bone. The intramedullary nail is placed in the intramedullary canal of a portion of the bone and the screws are fixed in the radial sockets or receivers at the level of the femoral neck to provide mechanical support across the bone. Transverse screws are placed through the transverse sockets to provide additional support and secure the nail within the femur.

Training aids for surgeons to simulate the repair or replacement of a knee joint include unitary pieces comprised of a material strong enough to withstand being put under tension without snapping, yet soft enough to be cut, filed, and / or drilled. An orthopaedic training device (100) is provided comprising a facsimile of a distal portion of a femur (200) and a facsimile of a proximal portion of tibia (200), wherein respective diaphysis portions (220, 320) and metaphysis portions (230, 330) of each facsimile are comprised of a first material having a first hardness, the femur epiphysis portion (240) is comprised of a second material having a second hardness, and the tibia epiphysis portion (340) is comprised of a third material having a third hardness, the first hardness being greater than the second hardness and the third hardness. In this way, the diaphysis portions and metaphysis portions may withstand tension, and the epiphysis portions may remain soft enough to be used in surgical procedures.

The invention relates to an intelligent fracture detection method based on multi-scale edge feature fusion. The method comprises the following steps: collecting X-ray fracture image data conforming to specifications from an orthopedic hospital; preprocessing the X-ray fracture image data to obtain a fracture image data set; constructing a fracture detection model based on a YOLOv11 network model: replacing a feature extraction module of a backbone network in the YOLOv11 network model with a multi-scale edge information selection module to establish the backbone network of the fracture detection model, and adding a bilateral feature interaction fusion module into a neck network of the YOLOv11 network model to establish a neck network of the fracture detection model, constructing a head network of the fracture detection model by using a single detection head to obtain the fracture detection model; training a fracture detection model through the image data set to obtain a trained fracture detection model; and inputting a to-be-detected X-ray fracture image into the trained fracture detection model to obtain a fracture detection result. The detection sensitivity can be effectively improved.

The invention discloses an intramedullary nail for outer side wall smashing type femoral intertrochanteric fracture, and belongs to the field of medical instruments, the intramedullary nail comprises a main nail, the main nail is connected with a tension bolt through a duct adjusting mechanism, and the main nail is provided with a lock nail; the hole channel adjusting mechanism is arranged on the main screw and used for adjusting the neck-shaft angle of the lag screw, the hole channel adjusting mechanism adjusts and changes the installation angle of the lag screw on the main screw through the structure of the hole channel adjusting mechanism, and then adjustment of the neck-shaft angle of the lag screw is achieved. The lag screw can cross the outer side wall to crush a fracture line, the problem of supporting failure caused by the fact that the screw penetrates through the fracture line in traditional fixation is avoided, meanwhile, the tip end of the lag screw is more accurately embedded into a main pressure bone small beam column (PCS) at the proximal end of the femur, and the holding force of the screw to the femoral head is improved; the main nail and the femoral shaft are tightly fixed through transverse locking, and rotation and axial displacement of the main nail in the medullary cavity are limited.

The invention discloses a customized tibia prosthesis, and relates to the technical field of skeleton prostheses, the customized tibia prosthesis comprises a tibia prosthesis main body, the two opposite ends of the tibia prosthesis main body are both provided with positioning bosses, the section of each positioning boss is the same as the shape of a marrow cavity of a tibia backbone, and the positioning bosses are used for being embedded into the marrow cavity of the tibia backbone; the tibia artificial bone body further comprises a pore support and a solid support, the pore support is of a porous structure, and the solid support is fixedly connected with the pore support. And the dense pore structures of the positioning boss and the pore bracket are beneficial to promoting the formation of new bone tissues, so that the bone tissues can grow in each pore, and the tibia prosthesis has enough mechanical stability and long-term ossification support. The bone prosthesis has the technical effect of improving the adaptive positioning performance and stability of the bone prosthesis and the original bone.

A prosthetic system (100) comprises a support structure (120) for use in implanting a component of an implant in the first bone of the subject. The support structure (e.g., a cone) has a first end surface (122), a second end surface (124), an exterior surface (126) extending from the first end surface to the second end surface, and an inner surface (128) defining a passageway extending from the first end surface to the second end surface. The exterior surface of the support structure is configured to be received in a cavity of the first bone such that the first end surface is flush with or beneath a surface of the first bone, and the exterior surface of the support structure is configured to be received in the cavity of the first bone such that a section of the exterior surface of the support structure contacts cortical bone (138) in the diaphyseal zone of the first bone.

This invention relates to the field of orthopedic traction technology and provides a traction device for assisting reduction during surgery of complex tibial plateau fractures. The device includes a lead screw; one end of the lead screw is fixedly connected to a base; a support sleeve is slidably fitted onto the lead screw along its axial direction, allowing the support sleeve to move on the lead screw; two feed sleeves are threaded onto the lead screw, located on opposite sides of the support sleeve; and pin fixation mechanisms are fixedly connected to both the support sleeve and the base, each fixing two Kirschner wires. The traction device provides that inserts relatively thick Kirschner wires into the tibial and femoral shafts, respectively. By moving the pin fixation mechanisms fixed to the support sleeve, the tibia and femur are retracted, facilitating fracture reduction during surgery without the need for additional skin or soft tissue retractors.

The utility model discloses a humerus inner side support frame, relates to medical instrument technical field, the humerus inner side support frame includes: fixed part and support part, fixed part and support part are fixedly connected, fixed part is used for fixed connection with humerus diaphysis, support part is used for with humerus head and humerus neck of humerus butt joint to support humerus head and humerus neck. The fixing part is arranged on the inner side of the humerus and fixedly connected with the diaphysis of the humerus, the supporting part abuts against the humerus head of the humerus and the humerus neck of the humerus so as to support the humerus head and the humerus neck, the attaching area of the humerus inner side supporting frame and the inner side of the humerus can be increased, and the supporting part can effectively support the inner side of the humerus head; the risks of varus deformity, collapse and the like of the humerus head due to lack of support are reduced, so that subsequent rehabilitation of a patient is facilitated.

The invention provides a femoral shaft osteotomy instrument, which relates to the technical field of orthopedic instruments and comprises a positioning nail, a connecting arm, a guide nail and a guide slide block. The positioning nail in the medullary cavity is forcibly associated with the external guide nail through the connecting arm, and the central axes of the positioning nail and the guide nail are always kept parallel, so that the parallelism of an osteotomy surface is ensured; and a rotary locking structure is arranged between the connecting arm and the mounting seat, and is matched with the design of the telescopic arm, so that flexible adjustment of multi-dimensional angles and lengths is realized. The guide sliding block slides along the guide nail and is provided with a damping structure, and accurate positioning and stable cutting of the osteotomy position are achieved by matching with a limiting ball of the cutting piece. The femoral shaft osteotomy orthopedic instrument solves the problems of non-parallel osteotomy surfaces, positioning deviation and inconvenience in adjustment of a traditional instrument, has the advantages of stable structure, accuracy in operation and high universality, and is suitable for various femoral shaft osteotomy orthopedic operations.

The invention discloses a TPMS-based bone scaffold topological structure for treating femoral head necrosis and an implantation method thereof, and relates to the field of bone scaffold topological structures. The stent comprises a stent main body structure, and the stent main body structure sequentially comprises a first stent cortical bone area, a stent cancellous bone area, a second stent cortical bone area and a stent'double cortical bone fixation 'femoral shaft penetrating area from top to bottom. The first stent cortical bone area, the stent cancellous bone area and the second stent cortical bone area are all subjected to structural topological optimization by utilizing TPMS. The invention provides a novel implantation mode by combining a three-period minimal curved surface (TPMS) topology optimization bone scaffold structure and fusing surface replacement and medullary core decompression, and solves the problems of insufficient mechanical support, poor structure biomimetic property, low implantation stability and the like of the existing bone scaffold. More accurate mechanical adaptation, better osseointegration effect and longer implant service life are achieved, so that caput femoris collapse is effectively delayed or avoided, and the requirement for artificial joint replacement is reduced.

A stemless implant for shoulder arthroplasty includes a body having a proximal portion, distal portion, and an outer surface. A cylindrical extrusion is substantially perpendicular to and adjacent the proximal portion. At least a portion of the outer surface is configured to contact bone, the outer bone contacting surface comprising a concave taper. The stemless implant can be sized and shaped for insertion into a metaphysis of a humerus bone without penetrating a diaphysis of the humerus bone. The implant optionally comprises a medial fin, a lateral fin, an anterior fin, and a posterior fin. The medial fin and lateral fin may be thicker than the anterior fin. The fins may taper from the proximal portion to the distal portion.

This invention provides an adaptive posture capture and biomechanical feature analysis method and system, comprising the following steps: constructing a posture detection network based on an improved YOLOv8-Pose architecture; replacing traditional static convolutions with full-dimensional dynamic convolutions ODConv in the backbone and neck networks; dynamically weighting spatial, channel, and convolution kernel weights using a multi-dimensional attention mechanism to achieve real-time detection of athlete postures and capture of skeletal key points, outputting preliminary raw coordinates of skeletal key points; introducing a geometric calibration logic based on biomechanical constraints, utilizing the invariance of bone length in short-term motion sequences to correct the preliminary detected skeletal key points with bone length consistency constraints and geometric constraints, obtaining calibrated key points, and outputting kinematic evaluation parameters based on the calibrated key points. This invention significantly improves posture estimation accuracy while maintaining real-time feedback capabilities, providing a scientific kinematic evaluation basis for sports research and practical training.

A bone plate including a long-plate-shaped main section to be disposed on a side surface of a diaphysis, a transverse section to be disposed on the side surface of an epiphysis, a coupling section coupling the transverse section and the main section to each other. The main section is twisted relative to the transverse section around an axis parallel to a longitudinal axis of the main section. when the bone plate is viewed in a transverse direction of the main section, the bone plate has a shape in conformity to the shin bone such that the coupling section is inclined relative to a longitudinal direction of the main section and the main section and the transverse section are bent to have a cranked shape in which the main section and the transverse section are offset relative to each other in a thickness direction of the bone plate.

An external fixator for a fractured distal radius including a first plurality of vertical passages for pins extending downward from a first pin mounting block into one or more bone fragments and one or more frame element apertures extending from an elongated frame element for pins extending downward from the device into the shaft of the radius.

The invention discloses a tibial plateau fracture minimally invasive bone fracture plate with a universal locking structure, and belongs to the technical field of medical instruments, the tibial plateau fracture minimally invasive bone fracture plate comprises a bone fracture plate body, the bone fracture plate body comprises a tibia plate body, a metaphysis plate body and a backbone fixing plate from top to bottom, a first universal locking hole, a second universal locking hole and a third universal locking hole are formed in one side of the tibia plate body, one side of the metaphysis plate body and one side of the diaphysis fixing plate in a penetrating mode, locking threaded sleeves are arranged on the inner wall of the first universal locking hole, the inner wall of the second universal locking hole and the inner wall of the third universal locking hole, and a kirschner wire positioning hole is formed in one side of the tibia plate body in a penetrating mode. The tibia plate body, the metaphysis plate body and the diaphysis fixing plate are integrated, so that the bone fracture plate can adapt to the tibia plateau, the metaphysis and the diaphysis part, the fitting degree with the tibia metaphysis is improved, and it is ensured that the bone fracture plate is tightly attached to the bone surface; the universal locking holes are formed in the segments of the bone fracture plate body, and the locking threaded sleeves and the multi-angle locking screws are matched, so that the implanting angle of the screws is flexibly adjustable.

This invention discloses a fixation device for long bone fractures, belonging to the field of medical devices. It includes a limiting part, a base, elastic sutures, a reduction mesh sleeve, and a support adjustment rod. The limiting part is fixedly connected to the wall of the long bone shaft. The first end of the base is fixedly connected to the limiting part, and the second end of the base has an internally threaded hole extending towards the first end. The elastic suture extends from the second end of the base. Multiple elastic suture threading holes are discretely distributed on the reduction mesh sleeve. One side of the support adjustment rod is threadedly connected to the internally threaded hole, and the other side is fixedly connected to the reduction mesh sleeve. Multiple elastic sutures extending from the second end of the base pass through the fracture fragments at the bone ends and then fix the fracture fragments to the side of the reduction mesh sleeve facing the base via the aforementioned threading holes. This invention enables stable reduction of long bone fracture fragments, and only requires micro-holes for threading at the fracture ends, avoiding the trauma caused by numerous bone screw holes.

The invention discloses a long bone fracture fixing device, which relates to the technical field of orthopedic medical instruments and comprises a first fixing arm, a second fixing arm, a third fixing arm, a first fixing nail and a second fixing nail, the first fixing arm is used for being arranged at a backbone, the first end of the first fixing nail is used for being fixedly inserted into the backbone, and the second end of the first fixing nail is fixedly connected with the first fixing arm; the second fixing arm is used for being arranged at the bone end, the middle of the second fixing arm protrudes relative to the two ends of the second fixing arm, the first end of the second fixing nail is used for being fixedly inserted into the bone end, and the second end of the second fixing nail is fixedly connected with the middle of the second fixing arm or one end of the second fixing arm. The second end of the third fixing arm can deflect in the direction away from the long bone relative to the first fixing arm, the first end of the third fixing arm and the first end of the first fixing arm can be locked, and the second end of the third fixing arm is fixedly connected with the middle of the second fixing arm; the fixing device can meet the requirement for simultaneous fixation of the backbone and the bone end.

The invention discloses an intertrochanteric fracture navigation method and system, and relates to the technical field of intertrochanteric fracture navigation. The intertrochanteric fracture navigation method comprises the following steps: acquiring medical image data of a side hip joint area, and constructing a three-dimensional digital model; identifying a fracture line and a plurality of key bone anatomical mark points in the three-dimensional digital model; marking a near-end head and neck fracture block and a far-end backbone fracture block in the three-dimensional digital model based on a fracture line in the three-dimensional digital model; the method comprises the following steps: extracting a spatial attribute set between a near-end head and neck fracture block and a far-end backbone fracture block in a three-dimensional digital model on the basis of each key bony anatomical mark point in the three-dimensional digital model. The spatial attribute set between the near-end head and neck fracture block and the far-end backbone fracture block in the three-dimensional digital model is based on the spatial attribute set between the near-end head and neck fracture block and the far-end backbone fracture block in the three-dimensional digital model; and the target virtual implantation channel is automatically planned in the three-dimensional digital model in combination with the preset mechanical bearing area parameters so as to be used for navigation planning suggestions, so that the precision of preoperative navigation planning is realized.

Provided is a method for manufacturing a prosthesis for a fractured long bone of a patient. The method includes: providing data representative of the fractured long bone of the patient, the fractured long bone comprising a diaphyseal fragment comprising a medullary cavity; based on the data provided, designing the prosthesis specifically to the patient, wherein the prosthesis comprising a stem part configured to be inserted into the medullary cavity for securing the stem part to the diaphyseal fragment.

The invention provides a femoral head necrosis detection method and system, and relates to the technical field of image processing, and the method comprises the steps: adding an ECA module in a convolution layer of a backbone network of a YOLOv7 model based on the YOLOv7 model, and obtaining an improved YOLO model; performing image enhancement on the X-ray image of the femoral head part through a CLAHE image enhancement algorithm to obtain a first enhanced image; processing the first enhanced image through an AutoAuger data enhancement algorithm to obtain a second enhanced image; training the improved YOLO model based on the second enhanced image to obtain a femoral head necrosis detection model; and inputting a to-be-detected femoral head X-ray image into the femoral head necrosis detection model to obtain a detection result. Compared with a traditional YOLOv7 model, the detection method disclosed by the invention is more accurate, and the femoral head necrosis area can be accurately identified.

The present invention relates to a medical bone (10) plate for the treatment of fractures of the distal femur (2) with metaphyseal comminution, periprosthetic fractures, and / or interprosthetic fractures, the bone plate (10) being non-custom fit and non-planar, the bone plate (10) being twisted and having a proximal portion (12), a distal portion (16) and an intermediate portion (14) connecting the proximal portion (12) with the distal portion (16), wherein: a. the distal portion (16) is configured to fit to the distal medial femoral condyle (2a); b. the proximal portion (12) is configured to be aligned with the distal ventral section of the femoral shaft (2b).

1. The name of the design product: bone plate (high elasticity anatomical conforming). 2. The use of the design product: the design product is used for the fixation treatment of high fitting and elastic adaptation of femoral shaft fracture. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

Provided is a method for manufacturing a prosthesis for a fractured long bone of a patient. The method includes: providing data representative of the fractured long bone of the patient, the fractured long bone comprising a diaphyseal fragment comprising a medullary cavity; based on the data provided, designing the prosthesis specifically to the patient, wherein the prosthesis comprising a stem part configured to be inserted into the medullary cavity for securing the stem part to the diaphyseal fragment.