181 results about "Bone structure" patented technology

The invention relates to an oral implant positioning method and system based on deep learning. According to the method, three-dimensional point cloud data of an oral cavity is obtained and preprocessed, and a pre-trained three-dimensional deep learning segmentation model is utilized to automatically and accurately segment tooth, gingiva and alveolar bone structures. And based on the segmentation result, extracting key form and spatial relationship characteristics of the alveolar bone, and matching with an implant database to primarily select a candidate scheme. By integrating geometric constraint verification and biomechanical simulation, the candidate schemes are optimized and decided, and the optimal implant implantation position and posture meeting the safety and biomechanical requirements are calculated. And finally, automatically generating digital operation guide plate data completely matched with the gingival form of the patient according to the optimal scheme. According to the method, automation and intellectualization of the whole process from data collection to surgical guide plate generation are achieved, the defects that a traditional method depends on artificial experience, is high in subjectivity and low in efficiency are effectively overcome, and the precision, efficiency and reliability of implantation surgical planning are remarkably improved.

The invention relates to an occlusion guide plate designing and manufacturing method based on dentition mechanical analysis, which comprises the following steps: S1, acquiring oral cavity image data of a patient, and constructing a three-dimensional digital model comprising a dental crown, a tooth root and an alveolar bone structure; s2, calculating an overall mechanical reference point of a tooth root structure of an anterior maxillary tooth area; s3, acquiring an incisal edge midpoint of each incisal tooth and a cusp point of each canine tooth in the maxillary anterior tooth area, solving a geometric center, and connecting the geometric center with an overall mechanical reference point to form a dentition direction vector; s4, calculating the displacement relationship between the target dentition arrangement and the initial dentition arrangement in the lip-tongue direction; s5, calculating an included angle between the occlusal force direction of the maxillary anterior tooth area and the dentition direction vector; s6, determining key morphological parameters of the occlusion guide plate according to the calculation result of the included angle in S5; and S7, manufacturing the occlusion guide plate. Compared with the prior art, the method has the advantages of precise mechanical adaptation, quantitative treatment prediction, personalized design and the like.

The invention discloses a hip replacement lower limb equal-length control system and method based on individualized three-dimensional modeling. The hip replacement lower limb equal-length control system comprises a data preprocessing module, a medical image processing module, a dynamic implantation simulation module, a biomechanical analysis module, a guide plate generation module and a postoperative evaluation module. The method comprises the following steps: acquiring bilateral lower limb CT data and carrying out multi-modal registration; segmenting a skeleton structure by using a deep learning model, and constructing a three-dimensional model; reconstructing a complete sphere through affected side femoral head multi-plane fitting, and determining a target femoral head center in combination with uninjured side mirror image data; dynamically adjusting the space posture of the prosthesis to enable the center of the prosthesis head to coincide with the center of the target; performing finite element analysis to optimize stress distribution; and generating a 3D printing file of the individualized osteotomy guide plate and the positioning pointer. According to the method, preoperative accurate planning, intraoperative real-time control and postoperative quantitative evaluation are achieved, the operation precision is effectively improved, and complications of unequal lengths of lower limbs are avoided.

The invention relates to a spine bone structure and bone mineral density automatic measurement method based on a CT image. The method comprises the following steps: performing CT scanning on a phantom with known bone mineral density to obtain a real bone mineral density calculation formula; all CT images in the DICOM format are read, DICOM analysis is carried out, and three-dimensional CT value data and other main information of all the images are obtained; performing outer contour segmentation on the whole spine in the CT image by using a deep learning network to obtain an outer contour of each vertebral body in the image; the method comprises the following steps: carrying out preliminary segmentation on cortical bones and cancellous bones by adopting a dynamic threshold method aiming at each vertebral body, selecting a preliminarily segmented cancellous bone region, using a maximum connected domain algorithm in a three-dimensional direction, retaining a maximum connected region, and further measuring the bone mineral density, namely calculating overall topology parameters, the bone mineral density and the bone mineral content of the current vertebral body; calculating the rubbing parameters, the bone mineral density and the bone mineral content of the current vertebral cortical bone and cancellous bone; and measuring the content of the cross section of the cone.

The invention is suitable for the field of meat processing and production, and provides an intelligent recognition method and system for the three-dimensional contour of boned meat based on image recognition, and the method comprises the steps: carrying out the multi-modal image collection of frozen boned meat, and capturing a surface crack pattern; analyzing the crack pattern to construct a topological network model; reconstructing a bone-meat three-dimensional holographic model based on the topological network model, and marking joint, marrow cavity and bone mineral density abnormal areas; identifying potential skeleton weak points; generating a double-path cutting guide line; cooperative operation and visual presentation of the guide lines are controlled through dynamic compensation. Precise recognition and intelligent cutting guide of the internal skeleton structure of the boned meat are achieved, the segmentation precision and efficiency are improved, and the method is suitable for the field of meat processing and the like.

The invention relates to the field of furniture control, and discloses an intelligent massage armchair control method based on posture recognition, comprising a multi-modal sensing fusion module which collects vision, pressure and millimeter-wave radar data through a sensor, constructs a three-dimensional body contour value of a user, and sends the three-dimensional body contour value to the multi-modal sensing fusion module; data are transmitted to an individual feature recording module based on the collected vision, pressure and millimeter wave radar data; and the individual feature analysis module is used for receiving the information acquired by the multi-modal sensing fusion module, judging the body shape of the user by using a K-means clustering algorithm according to the information, and then selecting a preset scheme according to the body shape information of the user to carry out matching judgment on the sitting posture of the current user. According to the invention, data of the infrared camera, the pressure sensor and the millimeter wave radar are integrated through the multi-modal sensing fusion module, multi-dimensional sensing of a visual contour, pressure distribution and a skeleton structure is realized, and the problem of key feature point extraction deviation caused by body type difference of a single camera is effectively solved.

An alveolar bone structure three-dimensional key point positioning method based on deep learning and rule constraint comprises the following steps: acquiring a maxillofacial region CBCT image data set, cutting CBCT data, manually marking the cut CBCT data, and dividing the CBCT data into a training set, a test set and a verification set; the data set is preprocessed, and data enhancement is carried out in a random intensity shifting and scaling mode; constructing an alveolar bone coordinate network model, wherein the network architecture mainly comprises an appearance branch and a spatial configuration branch; adopting the training set to train the alveolar bone coordinate network model, obtaining each parameter of the network model, and obtaining a trained alveolar bone coordinate network model; and testing the trained alveolar bone coordinate network model by adopting a test data set, and evaluating a test result. The method aims at solving the problems of anatomy prior deficiency, insufficient long-range dependence modeling and weak small sample generalization ability in the prior art, and high-precision alveolar bone key point positioning is realized.

The utility model provides a novel shapewear which comprises a shapewear body, cloth is sewn on the back of the shapewear body, and a strip-shaped cavity is arranged between the cloth and the shapewear body. The device further comprises supporting bone structures, the supporting bone structures are inserted into the strip-shaped cavities, each supporting bone structure comprises a cloth bag and fish scale bones made of memory alloy, a plurality of fish scale bone cavities are formed in each cloth bag, and the supporting bone structures are inserted into the fish scale bone cavities. The fish scale bone made of memory alloy has a shape memory function, the supporting position and angle can be flexibly adjusted according to the sitting posture habit, the activity requirement and the physical condition of a user, and personalized supporting experience is provided. The supporting bone structures are inserted into the strip-shaped cavities to be matched with the fish scale bone characteristics, the back curve is better attached, uniform supporting force is provided, local pressure is prevented from being too large, and the comfort degree is improved. Reasonable supporting can help a user to keep a correct sitting posture, the problems of poor postures such as scoliosis and humpback are prevented, and body health is promoted.

A system is provided.SOLUTION: A system comprising: means for a user to upload an image of the user; means for analyzing the uploaded image to determine a color attribute and a skeleton type of the user; means for suggesting a styling item suitable for the user based on a result of the determination; means for generating an image of the user when the suggested styling item is incorporated; and means for displaying the suggestion and the generated image to the user.SELECTED DRAWING: Figure 1

The invention discloses a spine Cobb angle automatic measurement method and device based on fine shape characterization and dynamic data amplification, and aims to construct an end-to-end deep learning framework for automatic measurement and structured analysis requirements of a Cobb angle in a spine X-ray image so as to realize integrated spine contour reconstruction and lateral bending angle prediction. According to the method, firstly, bone structure extraction and contour key point detection are performed on a spine X-ray image in an original training set, so that the contour shape of each segment of the spine is finely represented by using key points; constructing a training set spine segment contour matrix, and estimating robust contour shape subspace representation through robust subspace recovery; then, constructing a spine contour detection and regression network fusing multi-scale feature extraction and a sparse-dense sampling strategy, and realizing segment region positioning and basis vector regression; and reconstructing a spine contour through a coefficient so as to calculate a direction included angle between adjacent segments and an overall Cobb angle. Through robust subspace modeling, multi-scale feature fusion and circular data optimization strategies, the problems of discontinuous contour, large angle estimation error and data scarcity in traditional Cobb angle measurement are effectively solved, and the accuracy, stability and clinical availability of spine shape analysis are remarkably improved.

The invention provides an over-bending snake bone structure and an electronic endoscope. The over-bending snake bone structure comprises a snake bone front end, a snake bone transfer link and a snake bone rear end, the snake bone transfer link comprises an annular snake bone body, a first connecting end and a second connecting end are integrally formed at the two ends of the snake bone body in the axial direction respectively, the snake bone front end is connected with the first connecting end, the snake bone rear end is connected with the second connecting end, and the connecting center of the first connecting end deviates from the central axis of the snake bone body in the forward direction. The connecting center of the second connecting end reversely deviates from the central axis of the snake bone body. Even if the bending angle exceeds 180 degrees, the problem that the snake bone rear end and the snake bone front end collide with each other cannot occur, so that clear view of the camera and normal working of a working channel are guaranteed, and the snake bone structure is small in horizontal deflection angle.

The application belongs to the technical field of endoscope snake bone, and provides an endoscope snake bone structure with adjustable spacing function, which comprises an endoscope snake bone composed of multiple snake bone rings and a connecting mechanism; two adjacent snake bone rings are rotationally connected through a rotating shaft; a movable groove is formed on the surface of the snake bone ring; a fixed arc plate is fixedly connected to the middle part of the front side and the rear side of the inner wall of the snake bone ring; and the other end of the fixed arc plate is rotationally connected with a rotating arc plate. The endoscope snake bone structure with adjustable spacing function is characterized in that: by pulling one end of the steel wire rope, the steel wire rope is tightened through the connection of the steel wire rope; after the one end of the steel wire rope is loosened, the steel wire rope is retracted and moved; the tension of the steel wire rope is adjusted; the spacing between the multiple snake bone rings is adjusted; the multiple snake bone rings are moved in a turning direction; and the movable groove is formed, so that the use range of the endoscope of the snake bone structure is expanded, and the endoscope is convenient for use in the detection of cracks of a steam turbine.

The application discloses a bone age prediction method and system based on a multi-modal large model and a computer readable storage medium, belongs to the technical field of artificial intelligence and medical image processing, and comprises the following steps: fusing a left-hand DR image and clinical indexes through an end-to-end mode, constructing a multi-modal large model fine-tuned according to a bone age field, and outputting image-observed description of each bone in a left-hand wrist and bone-by-bone structured results of maturity levels; calculating a total bone age value through a scoring rule of a bone age evaluation standard, and generating and outputting a bone age evaluation report containing the bone-by-bone image-observed description, the maturity levels and the total bone age value. The application solves the problems of insufficient utilization of clinical indexes, heavy report writing burden, easy hallucination of model output and insufficient compliance of bone age calculation in the prior art, improves the accuracy of bone age prediction, clinical compliance and evaluation efficiency, and can be widely applied to hospitals, primary medical institutions and children growth and development screening scenes.

A canopy with a detachable top rib structure includes support columns and a first canopy positioned atop the support columns. The first canopy includes a frame and several first support rods, one end of which is fixed to the frame, and the other ends converge at the central node at the top of the first canopy. Each first support rod includes a first tube, a second tube, and a connecting sleeve. The top of the first tube is inserted into the connecting sleeve, and the bottom of the second tube is inserted into the connecting sleeve. This detachable top rib structure allows the shorter first and second tubes to be fixedly joined together to form a longer first support rod via the connecting sleeve. The connecting sleeve ensures strong stability of the connection between the first and second tubes, simplifies the connection method, and facilitates installation and disassembly. The disassembled shorter tubes are easy to store and transport. Furthermore, the first support rod has an aesthetically pleasing design.

The application discloses a design method of an integrated titanium plate assembly for assisting midfacial suture distraction external support traction, comprising the following steps: scanning a target object by a medical scanning device to obtain a three-dimensional model of the internal structure and tissue of the target object, wherein the three-dimensional model at least comprises independently displayable bone structure and dental tissue; performing bone analysis on the bone structure of the target object based on the three-dimensional model to obtain the weak point of the bone structure; obtaining the tooth root position of the dental tissue of the target object based on the three-dimensional model; selecting the shape and size of an integrated titanium plate assembly model based on the bone analysis result, and determining the fixed hole position of the integrated titanium plate assembly model based on the tooth root position; and generating an integrated titanium plate assembly three-dimensional model based on the shape, size and fixed hole position of the integrated titanium plate assembly model. According to the individual differences of patients, the integrated titanium plate assembly for assisting midfacial suture distraction external support traction is designed to be more suitable for patients, and the postoperative traction effect is improved.

This invention provides a pelvic floor support structure model and modeling method based on three-dimensional data to assist in judging the condition of pelvic floor ligaments and to perform physical simulation. To solve the above-mentioned technical problems, this invention provides the following technical solution, including: a bone structure, which includes the hip bone and the coccyx, which together form a pelvic support structure, with the inner side of the hip bone and the coccyx forming the pelvic space; an organ structure, which includes the following model structures, including models of the uterus, bladder, vagina, and rectum located in the pelvic space; and a ligament structure, which includes the cardinal uterine ligament connecting the uterus to the hip bone, the uterosacral ligament connecting the uterus to the coccyx, and the round uterine ligament, which connects one end to the upper end of the uterus and extends obliquely upward at the other end.

The application belongs to the technical field of image processing, and provides a fusion processing system for spine MR images and CT images, a segmentation model constructed through a Mamba structure, multi-scale feature extraction realized by using a three-way Mamba module, and the segmentation accuracy of the bony structure of the spine, intervertebral discs and soft tissues is significantly improved by combining gated spatial convolution and feature-level uncertainty estimation; at the same time, the GPU memory consumption is effectively reduced by the cascade training flow design, and under the premise of ensuring the segmentation quality, the generation of high-resolution fusion images is realized; on this basis, the fusion network based on a double-input Mamba structure has global perception ability and linear extraction ability of directional features, can efficiently fuse the high spatial resolution bone structure information of CT and the soft tissue contrast advantage of MRI, ensures the consistency of anatomical structures, fully retains the complementary features between modalities, and significantly improves the comprehensive analysis accuracy of spine images.

The system according to this embodiment aims to consistently suggest the most suitable hairstyle to the user. [Solution] The system according to the embodiment comprises a reception unit, an analysis unit, a generation unit, and a provision unit. The reception unit takes a photo of the user's face and inputs the desired hair length. The analysis unit analyzes the face shape, skin color, height, bone structure, etc., based on the information input by the reception unit and proposes a suitable hairstyle. The generation unit visualizes the hairstyle proposed by the analysis unit as a processed image. The provision unit provides the hairstyle recipe generated by the generation unit to the hairdresser.

The utility model provides a snake bone tube and endoscope belongs to snake bone structure technical field, including: at least two snake bone unit, its both ends respectively form insertion end and installation end, the insertion end is provided with the rotatory projection, the installation end is provided with the rotatory recess, the rotatory projection is matched with the rotatory recess, the rotatory projection is equipped with the rotatory recess, the rotatory recess is equipped with the rotatory projection, the rotatory recess is equipped with the rotatory projection, and the rotatory projection is equipped with the rotatory recess. In every two adjacent snake bone units, the rotating protrusion of one snake bone unit is embedded into the rotating recess of the other snake bone unit so that the two snake bone units can rotate relatively, and when the snake bone pipe is pulled out of the human body, the pulling-out direction extends from the insertion end to the installation end. The snake bone pulling-out device has the advantages that even if the rotating protrusions are broken and the spines rise upwards, the snake bone can be pulled out of the body smoothly, and fragments of the raised protrusions can be smoothened in the forward direction instead of upwarping in the reverse direction and stabbing the human body.

The utility model relates to the technical field of medical supplies, and discloses a snake bone structure and an endoscope with the snake bone structure, the snake bone structure comprises a tail end joint and a plurality of snake bone joints which are hinged in sequence from top to bottom, a front notch is formed between the front sides of every two vertically adjacent snake bone joints, a rear notch is formed between the rear sides of every two vertically adjacent snake bone joints, and the tail end joint is connected with the tail end joint. The two vertically adjacent snake joints can swing in the left-right axial direction; the tail end joint is annular, the upper end of the tail end joint is hinged to the lowest snake joint, a big-end-down stepped hole is formed in the tail end joint, the lower end of the stepped hole is used for installation of an insertion pipe, and a soldering tin hole communicated with the lower end of the stepped hole is formed in the lower end of the tail end joint. The tail end joint and the insertion pipe can be directly welded together through soldering tin, and redundant soldering tin between the snake joint and the insertion pipe can be filled in the soldering tin hole, so that the connection firmness between the snake joint and the insertion pipe is ensured, and the risk of falling of the insertion pipe is reduced.

A system and method for performing ultrasound scans is provided. One embodiment of the ultrasonagraphic system acquires sonogram information from a series of ultrasonic scans of a human subject. The series of ultrasound scans are taken over a portion of interest on the human subject which has their underlying bone structure or other ultrasound discernable organ that is under examination. The data from the series of scans are synthesized into a single data file that corresponds to a three-dimensional (3D) image and / or 3D model of the underlying bone structure or organ of the examined human subject.

The present disclosure relates to a flat-bottom drill for osteochondral transplantation, comprising a drill bit body and a drill handle, at least two cutting edges are arranged on the side wall of the drill bit body and extend to the end of the drill bit body by the side wall of the drill bit body; and the opposite surfaces of the cutting edges are configured to extend in a straight line direction, the bottoms of all the cutting edges are located in the same plane, the drill handle is coaxially arranged with the drill bit body and is configured to be fixedly connected with the drill bit body. The flat-bottom drill for osteochondral transplantation of the present disclosure, by arranging at least two cutting edges on the side wall of the drill bit body and locating the bottoms of all the cutting edges in the same plane, the local stress is dispersed when the drill bit body drills holes on the surface of the bone, the micro-cracks on the surface of the bone are avoided, and the integrity and stability of the bone structure are ensured.

The utility model discloses an endoscope snake bone structure and a snake bone chain, the snake bone structure comprises snake bone joints, the two end faces of each snake bone joint are respectively provided with a son rotating part and a mother rotating part, the center lines of the end faces of the snake bone joints, the son rotating parts and the mother rotating parts incline towards the same direction, and the son rotating parts and the mother rotating parts of the adjacent snake bone joints are connected in a sleeved mode to form rotating joints. By arranging the inclined end faces and the inclined connecting structures, when the front-end snake joint rotates relative to the rear-end snake joint, the overlapping length of the connecting structures between the front-end snake joint and the rear-end snake joint is increased, the snake bone stability is improved, the snake bone reliability is improved, and the occupied internal space of the snake bone chain is reduced.

The utility model relates to a snake bone structure and assembly. The snake bone structure comprises a barrel, a connecting part and a driving part. When the snake bone structure and the snake bone assembly are actually used, the first avoiding through hole and the second avoiding through hole which are located on the same side of the axis of the cylinder body can be close to each other, so that the cylinder body is in a bent state, and the first avoiding through hole and the second avoiding through hole which are located on the same side of the axis of the cylinder body are staggered in the radial direction of the cylinder body; when the side walls, close to each other, of the first avoiding through hole and the second avoiding through hole abut against each other, the bending deformation of the position of the barrel body reaches the maximum, and therefore a limiting structure can be generated only through the opening shape of the barrel body, excessive bending of the barrel body is prevented, and deformation and fracture of the structure of the weak position of the barrel body are avoided.

The invention relates to the technical field of health monitoring systems, and provides a fracture prediction system combining a multi-dimensional image technology and artificial intelligence, which comprises an image acquisition terminal, a data processing terminal, a prediction analysis terminal and a user feedback terminal, the image acquisition terminal is used for acquiring multi-dimensional image data of a predicted object; the data processing terminal is used for performing preprocessing and feature extraction on the multi-dimensional image data to generate bone density information, bone structure integrity information and crack detection information; the prediction analysis terminal is used for performing prediction analysis on the prediction object according to the bone density information, the bone structure integrity information and the crack detection information and outputting prediction analysis information; and the user feedback terminal is used for providing a doctor-patient interaction interface and displaying bone density information, bone structure integrity information, crack detection information and prediction analysis information. The method has the effect of improving the accuracy and reliability of fracture risk prediction.

The application discloses a preparation method of an interpenetrating phase ceramic dental material and belongs to the technical field of biomedical materials. The application is based on the porous foam structure and cavity tissue of bird skeletons for biomimetic design, two kinds of biomimetic bird bone structures combining the characteristics of annular hyoid structures and cavity tissues are established, and according to the bird skull cooperative damping mechanism, a mortise and tenon structure with the characteristics of cooperative bearing and buffering is constructed, the structure has more excellent mechanical bearing performance and deformation stability compared with a traditional structure. The zirconium oxide-hydrogel interpenetrating phase material prepared by a photo-crosslinking method, the composite design of the soft phase and the hard phase material not only significantly improves the energy absorption characteristics of the material, but also effectively improves the fracture toughness of the dental material. On this basis, a functional coating is constructed on the surface of the material by using a sol-gel dip coating process, and the problems of insufficient corrosion resistance and wear resistance of the dental material in the oral environment are further solved.

A method for treating a narrowed region of a lumen in a patient's ear or nose is described herein. The method includes advancing a catheter within the lumen such that a distal end of the catheter is positioned proximate the narrowed region, filling a fillable member to cause the fillable member to expand within the lumen, and generating at least one shockwave from at least one shockwave emitter. The at least one shockwave creates one or more fractures in a bone structure of the narrowed region of the lumen that causes the narrowed region to expand.

The embodiment of the invention relates to an image registration method and device, equipment and a storage medium. The method comprises the following steps: acquiring an original two-dimensional image and an original three-dimensional image of a to-be-registered target bone structure; inputting the original two-dimensional image into a bone splitting model to obtain a local two-dimensional image of each substructure, and inputting the original three-dimensional image into a bone segmentation model to obtain a local three-dimensional image of each substructure; and performing registration processing on the local two-dimensional image and the local three-dimensional image of any substructure by using a preset registration algorithm to generate a registration result between the local two-dimensional image and the local three-dimensional image. Therefore, the registration efficiency and accuracy of the two-dimensional image and the three-dimensional image are improved.

The utility model provides a bone puncture needle assembly for percutaneous bone cement plasty, and belongs to the technical field of medical instruments. The bone puncture needle assembly comprises a guide needle and a bone puncture needle. One end of the guide needle is a first tip, the diameter of the guide needle is a first preset diameter, and the length of the guide needle is a first preset length. A first passage penetrating through the length direction of the bone puncture needle is arranged in the bone puncture needle, one end of the bone puncture needle is a second tip, the inner diameter of the bone puncture needle is a second preset diameter, the length of the bone puncture needle is a second preset length, the second preset length is smaller than the first preset length, and the second preset diameter is larger than the first preset diameter; after the guide needle is inserted into the lesion bone structure from the first tip end, the bone puncture needle is arranged on the guide needle in a sleeving mode, and the second tip end is inserted into the lesion bone structure. According to the bone puncture needle assembly for the percutaneous bone cement plasty, it can be guaranteed that a bone puncture needle with the large diameter can be accurately inserted into a diseased bone structure at a time, and damage to the body of a patient is reduced.

The application discloses a monocular three-dimensional human pose estimation method fusing part perception and bone topology prior, and belongs to the field of computer vision. The application aims to solve the problem that existing methods ignore human motion heterogeneity and lack explicit anatomical constraints. The method comprises the following steps: obtaining 2D joint coordinates of a monocular video sequence and generating initial features; extracting features by using a parallel double-path time attention mechanism, wherein a global path captures overall motion, and a local path independently models features divided into five semantic component groups, and a cross-part graph convolution network is used to capture limb coordination, and two features are fused through an adaptive gating unit; and finally, features are transformed to a bone domain through a bone structure refining module, a graph convolution network is used to explicitly correct bone length and connection relationship based on a topology structure, and a refined three-dimensional pose is generated. The application enhances the physical rationality and accuracy of the predicted pose.