25 results about "Fracture neck" patented technology

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 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 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 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.

The invention relates to the field of medical instruments, in particular to a femoral neck fracture nail plate system implantation guider which comprises a guider body, a hollow sleeve, a knob, an auxiliary block and an adjusting assembly, a lag screw hole and an anti-rotation screw hole are formed in the right end of the guider body, and a first transverse nail locking hole and a second transverse nail locking hole are formed in the bottom end of the guider body; a groove for containing a target steel plate is formed in the right end of the guider body, a limiting assembly for fixing the target steel plate is installed on the guider body, a supporting ring is installed at the top end of the guider body, the auxiliary block is fixedly installed at the top end of the guider body, and a long round hole is vertically formed in the auxiliary block. The hollow sleeve is slidably installed in the long circular hole and the supporting ring, the adjusting assembly is installed between the supporting ring and the auxiliary block and used for adjusting the vertical floating degree of the hollow sleeve, and the rotary knob is installed on the auxiliary block and used for fixing the hollow sleeve. The present application has the effect of improving reduction of fracture and maintenance of effective fixation.

The invention relates to the technical field of medical instruments, and discloses a turnover booster for a femoral neck fracture patient, which comprises a base, two flat air bags are arranged on the upper part of the base, a lifting assembly is arranged in the base, a mounting assembly is arranged on the side edge of the lifting assembly, and a protection assembly is arranged on the upper parts of the flat air bags. The lifting assembly comprises a push plate rotationally connected into the base, a support is arranged on the inner wall of the base, a warping plate is rotationally connected to the middle of the support, a bolt rod is movably arranged at the end, extending out of the base, of the warping plate, and the outer surface of the bolt rod is sleeved with a threaded seat in a threaded mode. By arranging the lifting assembly and the two independently-inflated flat air bags, the bolt rod is rotated to drive the limiting base, the warping plate and the push plate to be linked, lateral overturning of a patient is achieved, movement interference is avoided through the sliding clamping design of the limiting base, the overturning process is slow and controllable, the patient does not need to autonomously exert force, and physical exhaustion of nursing staff is relieved.

The invention discloses an anti-retreating forcing screw for femoral neck fracture, and belongs to the field of medical instruments. Comprising a screw rod and a connecting rod fixedly connected to one end of the screw rod, left-hand threads are arranged on the outer wall of the connecting rod, and right-hand threads are arranged on the outer wall of the screw rod. By arranging the right-hand threads and the left-hand threads which are opposite in screwing direction, a worker can install the screw to a femoral neck fracture part through the guide needle, so that the right-hand threads are screwed into fracture far-end bone tissue, the left-hand threads are screwed into fracture near-end bone tissue, the right-hand threads on the outer wall of the screw are screwed into the fracture far-end bone tissue, and bone trabecula is occluded through the right-hand threads and the bone trabecula. Meanwhile, the left-hand thread on the outer wall of the connecting rod is screwed into bone tissue at the near end of the fracture, and the thread design opposite to the direction of the right-hand thread can form two-way confrontation pulling force, close the two ends of the fracture to the middle, achieve compression fixation, promote tight attachment of the fracture surface and accelerate healing.

The invention relates to the field of medical apparatus and instruments, and discloses a femoral neck fracture multidirectional pressurization fixing device which comprises a first fixing ring, a cylindrical ring is arranged in the first fixing ring, a bolt is in threaded connection with the interior of the first fixing ring, a second fixing ring is arranged on the outer side of the bolt, and a spherical hinge mechanism is installed in the cylindrical ring. A first extrusion pipe is arranged in the second fixing ring, and a sliding assembly is arranged in the first extrusion pipe. A first pull ring and a second pull ring are pulled to drive a first extrusion rod and a second extrusion rod to move, in the moving process, a telescopic rod in the first extrusion rod drives a sliding block to move in a sliding groove through a compression spring on the outer side, and the sliding block drives the first extrusion rod to move when moving; when the force is too large, the springs on the outer sides of the first extrusion rod and the second extrusion rod are used for buffering, and the legs of the patient are protected against damage.

The application relates to the technical field of medical devices, in particular to a femoral neck fracture repair system which comprises a bottom base used for being connected with a femoral neck; a top base used for being connected with a femoral head; a keel structure used for connecting the bottom base and the top base and simultaneously establishing a 'keel blood double circulation' system; a support column used for reinforcing structural strength, the support column being connected with the bottom base and the top base; a wrapping structure which comprises a wrapping cover, a binding belt and filling tissue, two sides of the wrapping cover are provided with a plurality of binding interfaces, the binding belt is cross-woven on the binding belt so that the wrapping cover is bundled into a ring shape and is sleeved outside the keel structure and the support column, the filling tissue is filled in a space surrounded by the wrapping cover and the binding belt, and the filling tissue comprises broken bone. The application has the effects of guaranteeing fracture fixation, improving local blood circulation and promoting fracture healing.

The application provides an adjustable femoral neck fracture cannulated screw placement guide, and belongs to the technical field of medical devices. The guide module is a trapezoidal column, the inclined surface of the guide module is a fitting surface, the plane where the height of the guide module is located is a front view surface, and the lower bottom surface of the guide module is an upper view surface. The guide assembly is used for guiding the guide needle of the cannulated screw inserted into the femoral neck, and the guide assembly is connected with the guide module. Through the guide assembly, the preoperative individualized evaluation, the technical requirements of the maximum dispersion of three cannulated screws in the ellipse and the cortical support can be combined, the three cannulated screws can be better guided and an ideal space configuration (oblique triangular configuration) in the femoral neck can be formed, the radiation exposure of the patient and the doctor during the operation can be reduced, and the penetration rate of the cannulated screw in the upper rear part can be effectively reduced.