15 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.

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.

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.

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 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 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.

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 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 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 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.