29 results about "Bone area" patented technology

The invention discloses a multi-task collaborative bone tumor CT image segmentation method, system and device, and relates to the technical field of bone tumor CT image segmentation. According to the multi-task collaborative bone tumor CT image segmentation method, a bone tumor CT image segmentation model is adopted to carry out bone tumor segmentation on a target bone tumor CT image; the bone tumor CT image segmentation model is trained and obtained through the following method: obtaining an original bone tumor CT image; according to the original bone tumor CT image, screening through a CT value range to obtain a bone image and a soft tissue image; marking a tumor area and a skeleton area in the bone image and the soft tissue image to form a training sample; constructing a multi-task learning network including a skeleton segmentation task and a tumor segmentation task; and training the multi-task learning network based on at least one group of training samples to obtain a bone tumor CT image segmentation model. According to the invention, the bone tumor can be identified more accurately, and the precision of bone tumor segmentation is improved.

The invention discloses an oral cavity panorama image data enhancement method and system. The method comprises the steps that an oral cavity panorama image is acquired and preprocessed; constructing and training an oral cavity panorama image data enhancement model, and inputting the preprocessed oral cavity panorama image into the trained auto-encoder to generate an enhanced image; according to the method, interference of a non-concerned area is effectively inhibited, the alveolar bone area is focused, the alveolar bone area is extracted more accurately, excessive segmentation and wrong classification are avoided, learning of key features is effectively enhanced, response of a key area is enhanced, artifact influences are effectively eliminated, the reconstruction effect is optimized, and the method is suitable for being popularized and applied. Therefore, non-physiological tooth arrangement after model reconstruction is avoided, the structural property and the layering sense of the image are further enhanced, overfitting is avoided, and meanwhile the regularization intensity in the training process is optimized.

The invention relates to the technical field of computer vision and deep learning algorithm optimization, in particular to an image processing method and system based on a fusion growing point optimization algorithm and a Unet network, and the method comprises the following steps: collecting a lumbar vertebra CT image, extracting the gray value and the HU value of each pixel in the image, marking a lumbar vertebra bone region, obtaining the density information of the lumbar vertebra bone region, and obtaining the density information of the lumbar vertebra bone region; analyzing the gradient of the lumbar vertebra, segmenting the initial region, obtaining information points of the basic region from the initial region, classifying, and generating initial structural features of the lumbar vertebra; according to the invention, by collecting the lumbar vertebra CT image and extracting the gray value and the HU value of the pixel, the density information of the lumbar vertebra bone region is obtained and preliminary segmentation is carried out, the gradient change of the region can be accurately analyzed, and a reliable basis is provided for the preliminary region of the image. In the process, the deviation of the lumbar vertebra bone form is successfully corrected by dynamically adjusting the image rotation angle and analyzing the angle difference of the boundary normal, so that the consistency of the form in the subsequent processing process is ensured.

This application relates to the field of medical devices and discloses a multi-arm orthopedic medical robot, including a mounting frame, a camera, a robotic arm, and orthopedic instruments. It also includes a receiving cylinder hinged to the top of the orthopedic instruments via a set of hinge blocks, the inner cavity of which is filled with a sealing fluid; and a telescopic column, which is sealed within the receiving cylinder. This invention utilizes multiple sets of fluid guide ports at the bottom of the telescopic column to allow the sealing fluid to flow along these ports during relative sliding of the receiving cylinder and the telescopic column, maintaining their telescopic function. Once the robotic arm has adjusted the angle of the orthopedic instruments, the receiving cylinder and the telescopic column cease relative movement, becoming a rigidly connected unit. In this state, the reaction force generated during drilling, hammering, or other operations on bone areas by the orthopedic instruments is directly transmitted to the mounting frame through the receiving cylinder and the telescopic column, thereby protecting the robotic arm and maintaining the stability of the device.

The present application relates to a system, method, storage medium and program product for safely monitoring the amount of bone grinding. The system includes an upper computer and a lower computer electrically connected to each other, and a motor connected to the lower computer; the motor is used to drive the motor bone grinding instrument to rotate; during the process of using the bone grinding instrument to grind the bone area to be ground in the hip bone of the test object, the upper computer performs a first monitoring of the amount of bone grinding corresponding to the area to be ground based on the first bone grinding related data sent by the lower computer; the lower computer performs a second monitoring of the amount of bone grinding corresponding to the area to be ground based on the second bone grinding related data sent by the upper computer; if the amount of bone grinding monitored by at least one of the first monitoring and the second monitoring exceeds a set threshold, the lower computer controls the motor to power off. The use of this system can improve the accuracy of the results of monitoring the amount of bone grinding.

The invention relates to the technical field of medical image processing, in particular to a calcaneal fracture reduction effect dynamic evaluation system based on a three-dimensional image. According to the system, the broken bone shape features of each bone block are obtained based on Gaussian curvature information of the surfaces of the bone blocks, broken bones corresponding to broken main bones are determined through a classification and direction correlation analysis method, broken bone indexes are quantified, and a bone area is obtained. Dividing the bone region into a to-be-registered region and a damaged region by utilizing the damage characteristic value, determining a stress influence direction of the to-be-registered region by combining information in the damaged region, and obtaining extrusion characteristics and offset characteristics of the bone block in the stress influence direction, and screening out an initial registration point of the bone block in combination with the damage characteristic value, and performing registration and reduction effect evaluation. According to the method, the bone blocks in the three-dimensional model are effectively identified and classified, the accurate initial registration points are screened out for registration by analyzing the fracture influence condition, and the registration effect and the reduction evaluation accuracy are ensured.

The invention relates to the technical field of oral medical instruments, and discloses an embedded polygenic tooth digital operation positioning guide plate which comprises a tooth supporting part and a bone supporting part which are integrated, and a positioning hole is formed in the bone supporting part; incision grooves are formed in the left side and the right side of the positioning hole in the bone supporting part, the upper ends of the incision grooves cross the boundary line of the tooth supporting part and the bone supporting part, and gaps are reserved between the lower ends of the incision grooves and the lower edge of the bone supporting part; the inner side face, used for being attached to the bone face, of the bone supporting part is divided into four areas by two incision grooves, the four areas comprise a bone area located between the two incision grooves, and a positioning hole is formed in the bone area; the two side skin areas are located in the area between the incision groove and the side edge of the bone supporting part; the inferior skin area is positioned in an area between one ends, far away from the tooth supporting part, of the two incision grooves and the lower edge of the bone supporting part; the heights of the four areas on the inner side face of the bone supporting part are different, the lower skin area is higher than the two side skin areas, and the side skin areas are higher than the bone area.

The invention provides an SPECT bone imaging noise reduction method and device and a storage medium, and relates to the technical field of nuclear medicine image processing.The SPECT bone imaging noise reduction method comprises the following steps that S1, data collection and reconstruction are conducted, specifically, multi-stage downsampling is conducted on standard-dose SPECT table mode data to generate low-dose SPECT data; s2, data preprocessing: performing cutting and linear normalization processing on the reconstructed low-dose and standard-dose SPECT images; s3, model construction: constructing a deep learning model of a lightweight Restormer architecture; and S4, model training: carrying out end-to-end model training by utilizing the preprocessed multi-stage low-dose and standard-dose image pair. According to the method, the deep learning model of the lightweight Restormer architecture is constructed, and the FFT frequency domain self-adaptive decomposition module is integrated step by step, so that high-frequency noise and low-frequency anatomical features in the image can be effectively separated, and high-frequency details of a skeleton region are effectively reserved while the noise reduction quality is remarkably improved.

The present application relates to a kind of whole guide plate for bone graft sandwich bone grafting simultaneous implantation and manufacturing method, including the implantation guide plate of bone graft and implant, bone graft positioning finishing plate, tooth positioning device of bone area, osteotomy guide plate, tooth bone model of edentulous area, tooth bone model of bone area, the top of the implantation guide plate of bone graft and implant is connected with the bottom of bone graft positioning finishing plate, can be set with the several positioning points corresponding to bone area position in bone area by the guide drill needle hole on bone graft positioning finishing plate, can accurately transplant the bone graft taken to bone area;The osteotomy guide plate can be connected with tooth positioning device of bone area, also can be fixed in bone area according to the several positioning points;The present application can realize accurate, minimally invasive, safe to obtain intraoral autologous bone graft, can provide bone graft acquisition, finishing, implantation and implantation whole process guidance for surgeon, reduce the difficulty of operation, assist surgeon to complete the whole operation more accurately, efficiently, safely.

The application belongs to the technical field of medical devices, and provides a single-knee prosthesis tibial tray and a mounting method, which comprises a prosthesis tibial tray body, a support wing and a support column are arranged on the prosthesis tibial tray body; the support wing is connected with the side wall of the prosthesis tibial tray body, and the support wing is embedded into the non-cutting side of the tibia; the support column is connected with the lower end of the prosthesis tibial tray body, and the support column is embedded into the tibia below the tibial bone cutting surface. The above scheme sets the support wing and the support column on the prosthesis tibial tray body, supports and fixes the prosthesis from two different positions and different directions of the side wall and the lower end, respectively, disperses and transmits the load borne by the prosthesis to the larger bone area of the tibia, effectively increases the stress area, avoids the load concentration in the local area of the tibial cutting surface, and reduces the fracture risk of the tibial cutting surface.

The invention relates to the technical field of skeleton feature analysis, in particular to a wound positioning and registering method applied to an orthopedic robot-assisted operation. The method comprises the following steps: dividing density distribution of point cloud data in a to-be-positioned region to obtain a skeleton region cluster; screening high-density blocks through high-density distribution of the point cloud data; performing curvature analysis on the spatial local surface based on the high-density block to obtain a local surface feature degree; and combining the distribution density and the local surface feature degree of the point cloud data, determining the angular point distribution importance of different skeleton region clusters, determining the optimized angular point detection number according to the relationship between the expected angular point distribution importance and the detection number, adjusting the point cloud data, and obtaining the optimized point cloud data for registration. According to the method, the curvature and density characteristics of skeleton features in different regions are analyzed to obtain the distribution importance of angular points in the regions, so that the robustness of angular point feature position matching during registration is improved, and the accuracy of registration in a wound positioning process is improved.

The invention relates to a bone age prediction method and device, equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring skeleton input data, and preprocessing the skeleton input data to obtain preprocessed skeleton input data; detecting all joints in the preprocessed skeleton input data through a target detection algorithm to obtain a key skeleton region detection result; target joint screening is carried out according to the key skeleton area detection result, and key skeleton joint screening features are obtained; and according to the key bone joint screening features, performing bone age grade prediction through a pre-trained deep neural network model, and outputting a bone age prediction result. By adopting the method, the bone age evaluation efficiency and the bone age evaluation accuracy can be improved.

This invention belongs to the field of medical technology and discloses a rapid bone repair implant manufacturing method based on medical imaging and 3D printing. The method first involves CT scanning of the damaged bone area to obtain image files, then using Mimics software to reconstruct a 3D model. The model is imported into 3-Matics software for preprocessing, and a composite repair algorithm combining mirror symmetry and surface fitting is used to digitally repair the bone defect. The repair model is then converted to STL format and sliced, 3D printed using biocompatible materials, sterilized, and implanted into the patient. The innovations of this invention lie in the collaborative processing of Mimics and 3-Matics software, the composite repair algorithm combining mirror symmetry and surface fitting, and the end-to-end digital solution. This allows for personalized and precise customization of implants, reduces the risk of rejection, significantly improves repair accuracy and manufacturing efficiency, shortens the treatment cycle, reduces medical costs, and shows promising clinical application prospects.

The utility model provides a female rib bone area, including the band main part, and the band main part includes the upper band body, lower band body and first avoiding groove, the upper band body and lower band body all include first fixed end part and second fixed end part, and first fixed end part is detachably connected to second fixed end part, pressurizing spare, pressurizing spare includes two upper pressurizing bands and two lower pressurizing bands, and the middle part of upper pressurizing band and lower pressurizing band is fixed to band main part, and two upper pressurizing bands and upper band body's first fixed end part and second fixed end part are fixed respectively, and two lower pressurizing bands and lower band body's first fixed end part and second fixed end part are fixed respectively, first fixed end part and second fixed end part all have the bionic surface for sticking to human chest and abdomen when the band main part is fixed. The utility model has the effect that after fixing, the chest of human body is not pressed too much, and when the chest cavity fluctuates, the integral deviation at the breaking point is ensured, the misplacement phenomenon does not appear, and the comfort degree of women is higher.

The invention discloses a differential extrusion unfreezing promoting and residual blood removing device for ham with bones, and belongs to the technical field of meat product processing equipment. The device comprises a flexible crawler belt conveying mechanism, a plurality of groups of difference-adjustable rolling mechanisms and a jacking adjusting mechanism. Each group of difference adjustable rolling mechanism is provided with a self-adaptive variable-diameter roller assembly which is axially divided into a first area and a third area corresponding to a pure meat area and a second area corresponding to a skeleton area, the wheel diameter of the second area is smaller than that of the other two areas in an initial state, and the wheel diameter of a variable-diameter wheel of each area is independently adjustable; large extrusion force can be applied to the pure meat area to promote unfreezing and residual blood discharge, and meanwhile small extrusion force is applied to the bone area to prevent bone fragmentation. The front section of the device is provided with a dual-energy X-ray detection unit for recognizing skeleton distribution and generating differential extrusion parameters, the guide mechanism corrects ham conveying postures, and the industrial problem that broken bones are dispersed due to unified extrusion of hams with bones is fundamentally solved.

A support device adapted to support a biological membrane, for example, for use as a regenerative membrane, the support device comprising a support strip in the form of a long strip extending in a length direction, the support strip including a circular arc surface extending in the length direction to support the biological membrane. The support strip supports the biological membrane by the smooth circular arc surface, and gum in the healing period prevents the support strip from being exposed to the bone area to cause surgical failure. The invention also provides a method of using the support device.

The invention discloses a sole structure and a footwear product. The sole structure comprises an upper insole, a lower insole, an outsole and a reinforcing plate. The lower-layer insole comprises a first supporting module, a second supporting module and a third supporting module which are separated from one another, and the compression deformation rate of the first supporting module located on the outer side of the half sole is lower than that of the second supporting module located on the inner side. The reinforcing plate is arranged between the upper insole and the lower insole, and the reinforcing plate is provided with a straight section in a linear form corresponding to the foot metatarsal bone area. The bottom face of the second supporting module forms an arc-shaped rolling contour, and the lowest point, tangent to the horizontal plane, of the second supporting module is arranged behind the straight section of the reinforcing plate. And meanwhile, the first supporting module and the straight section of the reinforcing plate are at least partially overlapped in the vertical direction. The sole structure can solve the problems that natural torsion of the foot of a half sole landing runner is insufficient, and energy feedback is weak at the moment of stepping on the ground.

The invention relates to a hearing aid intended to be placed around an ear of a user, characterised in that it comprises at least one first bone conduction device and at least one second bone conduction device, the first device being configured to be positioned in contact with a first bone area of the user's head and to transmit first vibrations to said first bone area, and the second device being configured to be positioned in contact with a second area of the user's head and to transmit second vibrations to said second bone area, said second area being different from the first area, and said first bone area and said second bone area being located around the same ear of the user, said hearing aid further comprising at least one microphone for picking up an ambient sound signal which is then transformed to generate the first and second vibrations.

The invention provides an evaluation method and device for femoral tunnel positioning accuracy after ACL reconstruction. The evaluation method comprises the steps that a preoperative intercondylar fossa outer side wall three-dimensional model is reconstructed according to a preoperative CT image of a knee joint of a patient, and a compact bone area is marked; reconstructing a postoperative intercondylar fossa outer side wall three-dimensional model according to the CT image of the knee joint of the same postoperative patient, and extracting a femoral tunnel prepared by taking a dense bone region as an anatomical marker at a femoral tunnel portal of the intercondylar fossa outer side wall; calculating the overlapping ratio of the femoral tunnel portal and the dense bone area; judging whether the overlapping rate is higher than a preset threshold, and if yes, judging that the femoral tunnel is successfully positioned; and if not, determining that the femoral tunnel positioning fails. Based on objective analysis of a compact bone area, whether femoral tunnel positioning succeeds or not can be accurately evaluated, the tunnel deviation degree can be visually reflected through quantitative evaluation of the overlapping rate, then the postoperative stability and clinical prognosis are predicted, the requirements of evidence-based medicine are met, and good clinical application prospects are achieved.

The invention relates to the technical field of image enhancement, in particular to an auxiliary puncture method for a subacromion gap under ultrasonic guidance, which comprises the following steps of: firstly, determining a self-adaptive cutting scale according to the puncture depth of a needle head at different sampling moments by considering that the deeper the puncture of the puncture needle head is, the higher the control precision requirement on the needle head is; determining corresponding initial saliency according to skeleton gray features and skeleton edge features represented by each cut local image region; further determining a saliency weight representing a segmentation scale segmentation effect according to the saliency deviation between each local image region and the adjacent region; therefore, the skeleton region needing to be enhanced is screened out based on the initial significance and the final significance determined by the significance weight, local image enhancement is carried out according to the skeleton region, and an enhanced shoulder ultrasound image with a better enhancement effect is obtained. And the effect of real-time auxiliary puncture of the subacromion gap according to the enhanced shoulder ultrasonic image is better.

The invention relates to a bone grinding quantity safety monitoring system and method, a storage medium and a program product. The system comprises an upper computer and a lower computer which are electrically connected with each other, and a motor connected with the lower computer, the motor is used for driving the motor bone grinding instrument to rotate; in the process that a bone grinding instrument is adopted to grind a to-be-ground bone area in the hip bone of a to-be-detected object, the upper computer conducts first monitoring on the bone grinding amount corresponding to the to-be-ground bone area according to first bone grinding related data sent by the lower computer; the lower computer carries out second monitoring on the bone grinding amount corresponding to the area to be subjected to bone grinding according to second bone grinding related data sent by the upper computer; and if the bone grinding amount monitored by at least one of the first monitoring and the second monitoring exceeds a set threshold value, the lower computer controls the motor to be powered off. By adopting the system, the accuracy of the monitoring result of the bone grinding quantity can be improved.

The invention discloses an osteoporosis auxiliary diagnosis method and system based on artificial intelligence, and belongs to the technical field of medical image processing and artificial intelligence. The method comprises the following steps: acquiring medical image data of a target skeleton area of a to-be-diagnosed individual; constructing a bone microstructure diffraction grating representing microstructure characteristics of the target bone area; providing one or more structure detection operators, and executing operator diffraction operation so as to generate one or more diffraction characteristic spectrums representing response characteristics of the bone microstructure diffraction grating to the structure detection operators; based on the one or more diffraction characteristic spectrums, calculating a diffraction entropy value used for quantifying the disorder degree of the diffraction characteristic spectrums; and based on the diffraction entropy value, determining an osteoporosis risk level of the target skeleton area. According to the method, the integrity information of the bone microstructure can be deeply mined and quantified from the standard medical image, so that an accurate osteoporosis auxiliary diagnosis means is provided.

The present invention discloses a method for segmenting ossified ligamentum flavum and a method for planning resection path. Among them, the method for segmenting ossified ligamentum flavum includes: obtaining three-dimensional images of the target area of the patient, and segmenting to obtain the first bone area and the second bone area therein; setting a Hu value threshold according to the voxel characteristics of the ossified ligamentum flavum, and searching and extracting voxel points with Hu values greater than the Hu value threshold located between the first bone area and the second bone area to obtain the ossified ligamentum flavum area. The present invention can accurately identify and extract the ossified ligamentum flavum from many tissue areas of the human body, effectively ensuring the accuracy and success rate of subsequent resection of the ossified ligamentum flavum. The present invention can plan a safer and more effective resection path for the ossified ligamentum flavum, provide surgical guidance for doctors, improve the success rate of ossified ligamentum flavum resection, and thus reduce the surgical risk.

A three-dimensional bone segmentation method based on improved region growing includes: first, reading in three-dimensional CT bone data; second, using an adaptive threshold segmentation method to separate the bone area from the background area to obtain all bone areas; then using morphological operations to remove the adhesion between the broken bones to obtain the core area of ​​each broken bone; finally, using these core areas as seed points for region growth, and performing region growth on multiple areas at the same time, thereby ensuring the accuracy of bone segmentation while ensuring the efficiency of segmentation, that is, ensuring that each pixel point belongs to a unique area and is the area closest to the seed point. According to the above steps, the pixel points contained in all the broken bones of the three-dimensional bone image and the broken bone number to which each pixel point belongs can be determined. The present invention can be applied to three-dimensional bone segmentation to help complete disease diagnosis and treatment, lesion analysis, etc., and help doctors better complete diagnosis and understand the patient's condition.

A bone health vibration stimulation device comprises a main body shell which is of a semi-annular structure with two bent arms; the force stimulation assembly is connected with the main body shell, and one end of the force stimulation assembly outputs vibration and makes contact with a bone area of a non-muscle distribution area of a limb of a user so as to form external force stimulation on the bone; one end of the bandage is connected with one bent arm of the main body shell, the other end of the bandage is detachably connected with the other bent arm, and the bandage is used for fixing limbs of a user. According to the utility model, the force stimulation assembly outputs vibration, so that the simulation of gravity load is realized, the activity of bone cells can be stimulated, the proliferation and differentiation of the bone cells are facilitated, and the problem that the bone mineral density and the bone strength are reduced due to the fact that the bone is in an insufficient force load state for a long time is solved; the device has a remarkable effect on health maintenance of long-term workers or bedridden people lacking exercise for a long time in a microgravity environment.

The present invention relates to a composition for preventing or treating bone and muscle disease comprising Eubacterium nodatum or a culture thereof. The present composition comprising Eubacterium nodatum or a culture thereof have the effect of increasing bone density, bone area, bone volume and bone thickness, increasing grip strength and muscle weight, and improving athletic performance.

A method for determining the screw trajectory of a pedicle bone screw comprises: obtaining a CT image of the target bone area intended to receive the pedicle bone screw, establishing an individualized three-dimensional geometric model of the target bone area based on the CT image, accessing a database comprising a three-dimensional bone area model; wherein the bone area model comprises a bone screw insertion surface and a pedicle traversing surface for each pedicle, morphing the bone area model to the geometric model of the target bone area generating a morphed vertebra model with a bone screw insertion surface and the pedicle traversing surface, calculating a maximum of bone density when the bone material is replaced by a bone screw for a bone screw in the morphed vertebra model of the target bone, and outputting the space vector of the screw trajectory for the bone screw together with the length and diameter of the bone screw in the morphed vertebra model of the target bone.

The present invention provides a method for generating a three-dimensional irregular removal interface of a pig tail forked bone, including obtaining a three-dimensional curvature model of the tail forked bone; based on the three-dimensional curvature model, dividing the tail forked bone area according to the complexity of the shape of the tail forked bone to obtain areas with similar complexity and recording them as blocks; for different areas with similar complexity, constructing an adaptive three-dimensional segmentation model to obtain the optimal removal interface of the tail forked bone; adopting the method of fusing after the tail forked bone is divided into blocks can not only flexibly cope with the variable shapes of bones, achieve personalized bone removal effects, but also ensure the continuity and smoothness of the removal interface, facilitate subsequent automated bone removal operations, and reduce meat loss. In addition, the adaptive three-dimensional segmentation model performs specific processing according to the complexity of different bone blocks, which not only optimizes the segmentation efficiency but also improves the accuracy of segmentation.