57 results about "Fracture neck" patented technology

The invention relates to the technical field of neck fracture auxiliary fixing equipment, and discloses a humerus surgical neck fracture external fixing device which comprises a first bottom ring frame, an auxiliary ring frame is arranged at the top of the first bottom ring frame, a sliding rod is slidably connected to the inner wall of the auxiliary ring frame in a sleeving mode, and a threaded rod is fixedly assembled at the bottom of the sliding rod; a second bottom ring frame is in lap joint with the side face of the first bottom ring frame, an extension plate is slidably connected to the inner wall of the first bottom ring frame, a fixing frame is fixedly assembled on the side face of the extension plate, and rolling wheels are rotationally connected to the inner wall of the fixing frame. Through cooperative use of a fixing frame and a roller, the fixing frame assists in connection of an extension plate and the roller, so that the roller assists in movement of the extension plate in the inner wall of the first bottom ring frame and the inner wall of the second bottom ring frame, and a tension spring assists in butt joint of the outer edge of a positioning rod and the inner wall of a positioning groove. And then the first bottom ring frame, the second bottom ring frame and the extension plate are assisted in stable limiting, and the device is assisted in convenient adjustment.

The invention provides a positioning auxiliary method and device for femoral neck fracture reduction and electronic equipment, and relates to the technical field of medical treatment, and the method comprises the steps: obtaining three-dimensional image data of a femoral neck fracture part of a patient, and carrying out the image preprocessing of the three-dimensional image data, and obtaining first point cloud data after noise removal; performing feature extraction processing on the first point cloud data through a preset point cloud data segmentation network, determining a local feature corresponding to each pixel point, and determining a target implantation path of the internal fixture according to the local features, the fracture type and the fracture position; second point cloud data of the surgical area in the surgical process are obtained in real time, point cloud registration processing is conducted on the second point cloud data, the second point cloud data coincide with the first point cloud data, the internal fixture is implanted along the target implantation path, and femoral neck fracture reduction is completed. The femoral neck fracture reduction difficulty can be remarkably reduced, the reduction accuracy is improved, and therefore injuries caused in the reduction process are reduced.

The invention discloses a femoral neck fracture internal fixture implantation guider, and relates to the technical field of medical instruments, the femoral neck fracture internal fixture implantation guider comprises a positioning base plate, an extension sleeve inserted into an insertion hole is fixed at one axial end of a guide locking sleeve, and a settling tank is formed in one end, far away from the extension sleeve, of the guide locking sleeve; a plurality of circular-arc-shaped guide plates which are of an annular structure and are evenly distributed at intervals are arranged on the side wall, away from the notch, of the settling tank, a turnover block is rotationally arranged between the side walls of the two sides of the turnover gap, an abutting block is fixed to the side wall of the side, facing the guide space, of the turnover block, and the turnover block can be turned over and adjusted towards the side close to or away from the center of the penetrating space. And the size of the clamping space is adjustable. A clamping space with a proper size can be provided, a guide needle or a hollow screw can be driven into a bone for guiding, the hollow screw cannot deviate from a preset driving direction due to deviation of a force application direction of an electric screwdriver, a normal bone structure remaining at the femoral head and neck is prevented from being damaged by repeated penetration operation, a plurality of screw paths are generated, and the operation efficiency is improved. And the bone density is sparse.

The present invention belongs to the field of medical device technology, particularly to the field of A61B17 / 68, and specifically to an implantation tool for implants in patients with femoral neck fractures. The present invention provides an implantation tool for implants in patients with femoral neck fractures, comprising a first component and a second component; the first component comprises a first straight portion, the first straight portion is provided with an open slot; the first component further comprises an extension portion, the extension portion extends from the proximal end of the first straight portion to the opposite direction of the open slot; the extension portion forms an acute angle with the first straight portion; the second component comprises a second straight portion, the second straight portion is arranged in cooperation with the first straight portion through the open slot; the second component further comprises a channel portion, the channel portion overlaps and is fixedly connected with the proximal end of the second straight portion, and is fixedly connected with the distal end separated by a certain distance.

The invention discloses a femoral neck fracture treatment positioning plate, preparation equipment and a preparation method, the positioning plate comprises a main body plate and an adjustable guide module, the shape of the main body plate is matched with the anatomical form of the outer side bone surface of the proximal femur, and the main body plate is provided with at least one bone nail hole. The individualized main body plate accurately matched with the anatomical form of a patient is introduced, and the adjustable guide modules of various innovative designs are combined, so that the problem that a traditional positioning plate is poor in universality is effectively solved, and anatomical differences and operation requirements of different patients can be perfectly met; a spherical hinge, an offset sliding block-arc-shaped guide rail, an elastic deformation ring, a modularized guide sleeve and other structures are adopted by the guide module, the space angle stepless adjusting function is ensured, meanwhile, the mechanical structure is remarkably simplified, redundant parts are eliminated, high-rigidity and gapless locking is achieved, micro-motion and displacement in an operation are thoroughly avoided, and the operation efficiency is improved. And the accuracy and the reliability of screw placement are greatly improved.

The invention provides a construction method of a personalized bone grafting guiding device for femoral neck fracture, which belongs to the technical field of digital medicine, and comprises the following steps: 1, three-dimensional reconstruction, 2, virtual reduction, 3, determination of bone grafting points, 4, determination of a bone attachment surface, using a 3-matic uniform offset tool to uniformly offset the extracted bone attachment surface to the outer side (i.e., the direction opposite to the bone surface) by 1-2 mm, and finally obtaining the personalized bone grafting guiding device for femoral neck fracture. 5, determining a bone grafting path, and 6, generating a kirschner wire sleeve based on the diameter of the kirschner wire so as to generate the bone grafting guider. Effective bony support is provided for the femur by attaching the attaching part to the rear side of the greater trochanter side of the femur of the patient, and the sleeve is guided through the generated kirschner wire. By using the bone grafting guiding device, a Kirschner wire can be accurately guided to a bone defect area, namely a bone grafting target area, in a femoral neck fracture closed reduction operation.

This invention provides a femoral neck fracture fixation system, relating to the field of orthopedic medical devices. Addressing the current problems of poor anti-rotation performance and cumbersome guide structure layout leading to long surgical times during femoral neck fracture fixation, this invention employs a fixation plate combined with a guide section. A guide groove is formed on the guide section to guide the inserted locking screw, eliminating the need for additional guide structures and saving surgical time. The fixation plate located on the femoral side provides restraint to the locking screw, improving its stability and anti-rotation capability.

A fracture reduction tool for performing bone fracture reduction is disclosed herein. In one example, the fracture reduction tool includes a first baseplate, a second baseplate, and a flexible linker coupled between the first baseplate and the second baseplate, wherein the flexible linker comprises a gooseneck component configured to move and bend in multiple degrees of freedom.

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 discloses a method, device, equipment and medium for determining an internal fixation scheme for a femoral neck fracture, which comprises obtaining quantitative three-dimensional image data corresponding to the femoral neck position on the fracture side of a patient; determining the elastic modulus of each unit volume data block in the quantitative three-dimensional image data based on bone density data; performing spatial resetting processing on a first fractured bone block and a second fractured bone block to obtain resetting spatial position data corresponding to each unit volume data block; constructing a femoral neck resetting model based on the resetting spatial position data and the corresponding elastic modulus; applying a plurality of preset steel nail fixation schemes to the femoral neck resetting model respectively, determining a force feedback value based on a preset applied force and the elastic modulus of the steel nail fixation part of the femoral neck resetting model; and determining a target steel nail fixation scheme based on the force feedback value. The present invention can determine an internal fixation scheme for a femoral neck fracture that meets the individual differences of the patient, thereby improving the stability and adaptability of the internal fixation of the femoral neck fracture.

The utility model discloses a dynamic sliding pressurization anti-distraction screw, a femoral neck fracture fixing instrument and a fixing plate. The anti-distraction screw comprises a screw body, the screw body comprises a screw head threaded section, the screw head threaded section is arranged at the screw head end, a single-circle threaded structure of the screw head threaded section comprises a screw-in guiding curved surface and a screw-out blocking anchoring surface, and the second end of the screw-in guiding curved surface is connected with the screw-out blocking anchoring surface; the diameter of the first end of the guide nail feeding curved surface is smaller than that of the second end of the guide nail feeding curved surface; a single-circle thread structure of the screw tail thread section comprises a screw retreating guiding curved surface and a screw feeding blocking anchoring surface, the second end of the screw retreating guiding curved surface is connected with the screw feeding blocking anchoring surface, and the diameter of the first end of the screw retreating guiding curved surface is smaller than that of the second end of the screw retreating guiding curved surface; the thread direction of the screw head thread section is consistent with that of the screw tail thread. The anti-distraction screw is applied to femoral neck fracture fixing instruments and fixing plates. The setting can promote the healing of the fracture surface, reduce the nail withdrawing amplitude and avoid nail feeding.

This invention relates to the field of medical care technology and discloses a shape memory alloy (NiTi) hip replacement proximal femoral anti-fracture device. It includes a fitting body, with a first clamping arm fixedly disposed at the mid-front end of the fitting body. A fourth connecting mechanism and a sixth connecting mechanism are fixedly disposed at the front end of the fitting body, symmetrically arranged on the upper and lower sides of the first clamping arm. This invention is simple to operate, provides firm fixation, and is practical and reliable. NiTi shape memory alloy possesses shape memory effect, superelasticity, and good biocompatibility. Using NiTi shape memory alloy as the raw material to prepare the encircling device, it is in a flat, extended state at low temperatures and recovers its designed curved shape after heating, firmly and effectively encircling the lesser trochanter. It is mainly applied in hip replacement surgery for elderly patients with femoral neck fractures and osteoporosis, effectively preventing proximal femoral splitting during femoral prosthesis wear.

The present invention discloses a femoral neck fracture fixation device, which includes a core rod, a plurality of blades and a locking component. The distal end of each blade includes a front flange portion protruding outward, and the front flange portion is matched and supported on the inner wall of the bone cavity at a corresponding position. A positioning groove is provided along the axial direction on the outer side of the core rod. The core rod is inserted into the center of the bone cavity and the back of each blade on the rear side is matched and embedded in the corresponding axial positioning groove. The core rod is used to support each blade at a corresponding position on the inner wall of the bone cavity, and the rear end of the core rod is fixed at the root of the femoral neck. The present invention first enters the bone cavity with the blade fitting the inner wall of the femoral neck, and the destructiveness of the loose bone part in the bone cavity is minimized. Selecting a suitable blade can completely match and fit the enlarged part of the inner end of the femoral neck, so that the edge contour of each blade completely fits the inner wall of the enlarged part of the bone cavity. After the back of each blade is supported by the core rod, each blade is radially supported on the inner wall of the femoral neck bone cavity.

The invention provides a multi-dimensional fixing device for femoral neck fracture, and belongs to the technical field of medical equipment. Comprising an intramedullary nail, and the intramedullary nail is installed in a medullary cavity on the inner side of a bone; the impurity removal mechanism is arranged on the inner side of the intramedullary nail and used for removing tiny bone scraps, exudates and inflammatory substances on the inner side of the medullary cavity, and the impurity removal mechanism comprises a sleeve installed on the inner side of the intramedullary nail. Through cooperation of parts such as the intramedullary nail and the like, due to the fact that the threads are arranged on the outer wall of the intramedullary nail, the intramedullary nail can be conveniently screwed into the inner side of the medullary cavity, the fracture position can be stabilized through the arrangement of the threads of the intramedullary nail, and due to the fact that an existing intramedullary nail is fixed in a symmetrical central type inner clamping plate type mode, the fracture position can be stably fixed. By arranging the threads on the outer wall of the intramedullary nail, the force line of a fracture can be stabilized, the fracture position is prevented from shifting or rotating, and it is ensured that the fracture position is kept stable in the healing process.

The present invention relates to a femoral neck fracture fixation device, which comprises a mounting base plate, a pressurized anti-slip sleeve, a pressurized screw and two reinforcing screws; the mounting base plate is provided with a pressurized screw hole and two mounting holes; the outer wall of the pressurized anti-slip sleeve is provided with a pressurized external thread for screwing with the pressurized screw hole, and the inner wall is provided with a pressurized internal thread opposite to the spiral direction of the pressurized external thread; the pressurized screw is a semi-threaded screw, and the outer periphery of its nut is provided with a thread for screwing with the pressurized internal thread, the bolt of the pressurized screw is used to extend from the proximal end of the fractured femur to the femoral head through the anti-slip sleeve screwed with the pressurized screw hole, so as to pressurize and fix the femoral neck; the bolts of the two reinforcing screws are used to extend from the proximal end of the fractured femur to the femoral head through the two mounting holes respectively, so as to reinforce the fixation of the femoral neck by the pressurized screw.

The utility model discloses a protective brace for preventing femoral neck fracture, which belongs to the technical field of femoral neck fracture prevention and comprises a backup plate, first rotating rods are arranged on two sides of the backup plate, the backup plate is connected with an arc-shaped plate through the first rotating rods, and a rotating shaft is arranged at the other end of the arc-shaped plate. A rotating shaft is arranged on the base and connected with a rotating plate through the rotating shaft, a fixing block is fixedly arranged on the rotating plate, and connecting plates are symmetrically arranged on the fixing block; by arranging the first rotating rod and the second rotating rod, the width of the waist and the positions of the legs can be adjusted respectively, then patients of different body types can be adapted conveniently, meanwhile, fixing is conducted through the hook-and-loop fasteners, the position of the protection piece can be freely adjusted through the arrangement of the connecting end, and the protection piece is convenient to use. The left leg protection and the right leg protection can be adjusted according to the requirements of the patient, connecting ropes can be clamped through a driving motor, a second rotating rod only conducts length retracting and releasing on one connecting rope, and convenience and rapidness are achieved.

The application provides a construction method of a femoral neck fracture personalized bone grafting guide, and belongs to the technical field of digital medicine, and comprises the following steps: 1, three-dimensional reconstruction; 2, virtual reduction; 3, determining a bone grafting point; 4, determining a bone attachment surface; using the uniform offset tool of 3-matic, the extracted bone attachment surface is uniformly offset by 1-2 mm to the outside (namely, in the direction opposite to the relative bone surface), a fitting part is generated; 5, determining a bone grafting path; 6, generating a Kirschner wire sleeve based on the diameter of the Kirschner wire, and further generating a bone grafting guide. The application realizes effective bone support for the femur by attaching the fitting part to the back of the greater trochanter side of the femur of the patient, and generates a Kirschner wire guide sleeve. By using the bone grafting guide, the Kirschner wire can be accurately guided to the bone defect area, namely the bone grafting target area, in the closed reduction surgery of the femoral neck fracture.

The application provides a femoral neck fracture multidimensional fixing device, and belongs to the technical field of medical devices. The device comprises an intramedullary nail, which is installed in the intramedullary canal of the inner side of the bone; a impurity removal mechanism, which is arranged on the inner side of the intramedullary nail, is used for removing the tiny bone chips, exudates and inflammatory substances on the inner side of the intramedullary canal, and the impurity removal mechanism comprises a sleeve which is installed on the inner side of the intramedullary nail. The cooperation of the intramedullary nail and other parts is achieved, the outer wall of the intramedullary nail is provided with threads, the intramedullary nail is conveniently screwed into the inner side of the intramedullary canal, the fracture site is stabilized by the threads of the intramedullary nail, the existing fixation mode of the intramedullary nail is a symmetrical central inner splint type fixation, the threads arranged on the outer wall of the intramedullary nail can stabilize the force line of the fracture, prevent the fracture from being displaced or rotated, and ensure that the fracture site remains stable during the healing process.

The invention provides an adjustable femoral neck fracture cannulated screw placement guider, and belongs to the technical field of medical instruments. Comprising a guide module which is a trapezoidal column, the inclined face of the guide module is a binding face, the plane where the height of the guide module is located is a front view face, and the lower bottom face of the guide module is an upper view face; and the guide assembly is used for guiding the cannulated screw guide needle inserted into the femoral neck, and the guide assembly is connected with the guide module. By arranging the guide assembly, preoperative personalized evaluation and the technical requirements of maximum dispersion and cortex support of the three hollow nails in an ellipse can be combined, an ideal spatial configuration (oblique triangular configuration) formed by the three hollow nails in the femoral neck can be better guided and achieved, the ray exposure quantity of a patient and a doctor in an operation can be reduced, and the operation efficiency is improved. And meanwhile, the penetration rate of the hollow nail at the rear upper part can be effectively reduced.

The invention discloses a magnetic driving force screw for femoral neck fracture, and relates to the technical field of medical instruments. The sleeve is arranged in the shell, and the sleeve is fixedly connected with the shell; the extension rod is arranged in the sleeve, the extension rod is in circumferential limiting connection with the sleeve, and one end of the extension rod extends out of the shell; the transmission assembly is arranged in the shell and comprises a screw rod, a speed reducer and a permanent magnet, one end of the screw rod is inserted into the extension rod and is in threaded connection with the extension rod, the other end of the screw rod is in circumferential limiting connection with a first transmission shaft of the speed reducer, a second transmission shaft of the speed reducer is fixedly connected with the permanent magnet, and the permanent magnet is in axial limiting connection with the shell; the permanent magnet is used for being controlled by an external magnetic field to rotate in the circumferential direction to drive the screw to rotate, so that the extension rod axially moves in the sleeve, and the tightness of the two ends of the bone at the fracture position is adjusted. According to the design, noninvasive adjustment is achieved through magnetic driving, secondary trauma can be reduced, and treatment safety and convenience are improved.

An internal fixing device for femoral neck fracture is characterized by comprising a sleeve, a hollow lag screw, an anti-rotation inserting nail and a tail cap, the hollow lag screw is connected into a center hole of the sleeve, and the hollow lag screw is connected with the anti-rotation inserting nail in a matched mode. The anti-rotation insertion nail and the hollow lag screw are in threaded connection with the tail cap, center threaded holes are formed in the center of the anti-rotation insertion nail and the center of the hollow lag screw, and the anti-rotation insertion nail and the hollow lag screw are in threaded connection with the tail cap. The risks of breakage and looseness of the fixing device are reduced; the fixing device designed by the utility model can effectively hold a fracture broken end, the anti-rotation insertion nails in four directions can be mutually engaged with the hollow lag screws, and the anti-rotation insertion nails are in an open state at the inner fixing far end, so that the effect of preventing a bone block from rotating is realized.

The invention provides a three-dimensional reconstruction method for a femoral neck fracture bone defect area, which belongs to the technical field of medical imaging and comprises the following steps: 1, morphologically reconstructing the pelvis, femur, femoral head and femoral shaft of a patient; 2, selecting a plurality of point locations of the reconstructed pelvic bone, determining an optimal mirror image, and performing mirror image uninjured side; 3, based on the uninjured side femoral head mirror image file, generating an affected side femoral shaft reduction file and an affected side femoral head reduction file; 4, adopting a Boolean operation tool to obtain a bone defect area; 5, calculating the volume of the bone defect area, and outputting the space coordinates of the gravity center. Based on CT data of a patient, virtual reduction can be carried out on femoral neck fracture, three-dimensional reconstruction can be carried out on the form of bone defect existing at the broken end, data such as the relative position and the volume of the bone defect area and the broken end can be output, visual and quantifiable reference can be provided for preoperative operation planning, and accurate bone grafting of the bone defect area in the operation is assisted.

The application discloses a femoral neck plate type internal fixation assembly, which comprises a long and narrow plate body capable of being implanted into a femoral neck, so that the two side edges of the plate body can be pressed against the inner wall of the neck of the femoral neck, the outer end of the plate body is connected with a fixing seat, the fixing seat is provided with a fixing hole, a fixing wire is sleeved in the fixing hole, and the two side edges of the plate body can be respectively provided with blade parts to form plate blades, so that the plate blades can be cut into the inner wall of the neck of the femoral neck after the plate body is implanted into the femoral neck. The application can be quickly assembled and reaches the purpose of fixing the femoral neck. According to different fracture positions, corresponding fixing plates can be selected. The fixing plate can be clamped in the narrow area of the neck, the positions of the distal end and the proximal end of the fracture can be kept corresponding, and the distal end and the proximal end of the fracture cannot swing and twist.

The utility model discloses a femoral neck fracture internal fixation screw guider which comprises a main guide rod, and an upper branch guide rod and a lower branch guide rod are arranged on the main guide rod in a sliding mode. The upper branch guide rod is provided with two upper connecting pieces, each upper connecting piece is rotationally provided with an upper guide pipe, and the rotating axis direction of the upper guide pipes is perpendicular to the axis of the upper branch guide rod. A lower connecting piece is arranged on the lower branch guide rod, a lower guide pipe is rotationally arranged on the lower connecting piece, and the rotating axis of the lower guide pipe is perpendicular to the axis of the lower branch guide rod. The upper branch guide rod and the lower branch guide rod which can slide are arranged on the main guide rod, and the upper connecting piece and the lower connecting piece which can slide are respectively arranged on the upper branch guide rod and the lower branch guide rod, so that the upper guide pipe and the lower guide pipe can be horizontally and vertically adjusted to be accurately aligned with an operation mark; and the upper guide pipe and the lower guide pipe can independently rotate to adjust the guide angle, so that accurate guidance is provided for locking of the bone screw.

The present invention discloses a femoral osteotomy nail placement fixture containing a 3D printed guide plate, which includes a femoral shaft fixing fixture and a femoral head fixing fixture from left to right, respectively, and are connected to a slide groove through a movable pillar or a pillar and a slide rod. The 3D printed guide plate includes a femoral shaft guide plate and a femoral head guide plate that fit the femur, and a removable pin placement guide plate and a secondary osteotomy guide plate are attached to the femoral shaft guide plate. The present invention also discloses the application of the femoral osteotomy nail placement fixture in a femoral osteotomy nail placement experiment. The femoral osteotomy nail placement fixture can firmly fix the femur and the corresponding 3D printed guide plate therein, providing strong fixation for the fracture production and screw implantation in the experiment; and the femoral head and femoral shaft structure are creatively designed as a detachable and returnable structure, which can perfectly realize the osteotomy, precise reduction and nail placement surgery of the femoral neck fracture model, thereby minimizing the difference in surgical quality between samples.

The utility model belongs to the technical field of in-vivo implantation of fracture, and discloses an in-vivo implantation device for femoral neck fracture, which comprises a main nail, a first auxiliary nail and a second auxiliary nail, the nail heads of the main nail, the first auxiliary nail and the second auxiliary nail are connected with limit connecting plates, and the nail tails of the main nail, the first auxiliary nail and the second auxiliary nail are connected with bone nail tail limit plates. The limiting connecting plate is further provided with a fastening screw. The femoral neck fracture internal fixation device is small in size, novel in structure and convenient to use and operate, and solves the problems that the femoral neck fracture internal fixation force is dispersed, the femoral neck fracture is easy to shift and cut out and the fixation is not firm by adopting a mode of combining the limiting fixing plate, the limiting fixing sleeve and the bone nail tail limiting plate according to the symptoms of the femoral neck fracture; and the occurrence of postoperative complications such as fracture nonunion and femoral head necrosis is reduced, so that the relative complexity of surgical operation is solved, the radiation injury of medical personnel caused by X-ray fluoroscopy is reduced, and the device is suitable for popularization and application.

The utility model relates to the technical field of medical care, and discloses a memory alloy hip replacement femur near-end explosion-proof device which comprises an attaching body, a first clamping arm is fixedly arranged in the middle of the front end of the attaching body, and a fourth connecting mechanism and a sixth connecting mechanism are fixedly arranged at the front end of the attaching body. The fourth connecting mechanism and the sixth connecting mechanism are symmetrically arranged on the upper side and the lower side of the first clamping arm. The embracing device is easy to operate, firm in fixation, practical and reliable, the NiTi shape memory alloy has the shape memory effect, superelasticity and good biocompatibility, the embracing device is made of the NiTi shape memory alloy, the embracing device is in the stretching state of the same plane at the low temperature and recovers the designed bent state after being heated, the lesser trochanter is embraced firmly and effectively, and the embracing effect is good. The device is mainly applied to hip joint replacement of patients suffering from senile femoral neck fracture and osteoporosis, and can effectively prevent the proximal femur from splitting in the grinding and filing process of the femoral prosthesis.

The invention relates to a set (1) for treating a bone fracture, in particular for treating a femoral neck fracture, comprising: an intermedullary nail (2) having an opening (6) with a first opening region (61) for receiving a bone screw (3) and a second opening region (62) for receiving an adjusting and / or fixing screw (4) for the bone screw (3), the first opening region (61) being connected to the second opening region (62) in a transition region (63); as well as an optionally multi-part sleeve (5) and a plurality of drill wires (7). In order to be able to make corrections when a drill wire (7) for the bone screw (3) is placed too high or too low, according to the invention the opening (6) of the intermedullary nail (2) in the transition region (63) is larger than an outer diameter of a drill wire (7).

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.

This invention relates to the field of intelligent medical imaging diagnosis technology, specifically to an AI detection system for occult femoral neck fractures based on two-stage artifact contrast learning. The system includes a data acquisition and construction module, an artifact enhancement contrast pre-training module, a detection network fine-tuning module, an inference and visualization module, and a physician-assisted image reading module. Training and testing data are acquired through multi-center cohort construction. An anti-interference radiographic feature encoder is obtained through artifact enhancement contrast pre-training. A single-stage detection network is then constructed by combining attention feature aggregation and dynamic upsampling modules to achieve precise detection. This invention can quickly output the probability of fracture presence, bounding boxes, and attention heatmaps. It can be embedded in clinical image reading workstations to provide real-time support, exhibits high sensitivity for occult femoral neck fracture detection, strong multi-center generalization ability, significantly improves physician diagnostic efficiency, reduces the risk of missed diagnoses, and features fast inference speed and strong interpretability, making it suitable for clinical application in emergency trauma scenarios.