242 results about "Sagittal plane" patented technology

The present invention relates to the technical field of stomatology. Provided is an auxiliary dental implant generation method based on a diffusion model. The method in the present invention comprises: acquiring oral CBCT image data of historical patients, preprocessing the oral CBCT image data of the historical patients to obtain a CBCT image dataset, using the CBCT image dataset to train a multi-task segmentation network, and using the segmentation network to obtain an intraoral tissue segmentation result; using the intraoral tissue segmentation result to train detection networks from the three dimensions of a cross-sectional plane, a coronal plane and a sagittal plane, respectively; using the detection networks to obtain detection results in the three directions of the cross-sectional plane, the coronal plane and the sagittal plane; fusing the detection results in the three directions of the cross-sectional plane, the coronal plane and the sagittal plane, and using a majority voting algorithm to construct a three-dimensional bounding box, so as to acquire an edentulous area; and using the intraoral segmentation result and the edentulous area as prompt information to guide, by means of an iterative process, a network to generate a post-implantation effect. The implantation effect obtained by the present invention is highly accurate, thereby providing a more precise auxiliary tool for stomatology.

The invention relates to the technical field of robots, and discloses an electro-hydraulic hybrid driving and driven humanoid robot lower limb and waist assembly which serves as a connection foundation of lower limbs and a robot trunk. The near ends of the thigh assemblies are connected with the waist assembly through hip joints; the near end of the shank assembly is connected with the far end of the thigh assembly through a knee joint; the foot component is connected with the far end of the shank component through an ankle joint; the hip joint is provided with three rotational degrees of freedom, the knee joint is provided with one rotational degree of freedom, and the ankle joint is provided with two rotational degrees of freedom; the rotational degree of freedom of each joint in a sagittal plane is driven by an active hydraulic actuator and a passive hydraulic actuator; the rotational degree of freedom of each joint in a horizontal plane and a coronal plane is driven by a motor joint module; the advantages of electric drive and hydraulic drive are brought into full play, and the problems of high power consumption in the negative work stage, complex traditional hydraulic drive pipelines and the like are solved by adopting an active and passive combined distributed hydraulic drive technology.

An ankle joint replacement prosthesis comprises a tibia prosthesis assembly and a talus prosthesis, the tibia prosthesis assembly comprises a tibia prosthesis body and a cushion block, the tibia prosthesis body and the cushion block are in an arc shape with the middle bent upwards on the sagittal plane, the cushion block is arranged at the bottom of the tibia prosthesis body in a sleeving mode, and the surface of the upper portion of the tibia prosthesis body is a tibia joint face. The surface of the lower portion of the cushion block is a first articular surface, the surface of the upper portion of the talus prosthesis is a second articular surface, the second articular surface is in an arc shape with the middle bent upwards on a sagittal plane, the surface of the lower portion of the talus prosthesis is a talus joint surface, and the first articular surface is matched with the second articular surface. When the prosthesis is implanted, only the articular cartilage and the subchondral bone need to be treated at the far end of the tibia, so that the bone at the far end of the tibia is reserved to the maximum extent, the anatomical integrity of the bone is guaranteed, the stability of the prosthesis is enhanced, the service life is prolonged, and the clinical operation effect is improved.

The invention provides a knee joint dyskinesia function evaluation method and system. The method comprises the following steps: by collecting lower limb kinematics parameters, plantar pressure distribution data and gait rhythm parameter groups of a subject in a standard gait test, generating a knee joint motion trail map comprising sagittal plane, coronal plane and rotation trail components, dividing a dynamic phase window based on the gait rhythm parameters, calculating a fluctuation feature vector of a sagittal plane track component, performing nonlinear decomposition on a coronal plane and a rotation track component to separate an adduction and abduction motion principal component and a rotation coupling component, constructing a joint stability quantitative index, and performing dynamic space registration on a bilateral knee joint track map to obtain a joint stability quantitative index; and calculating a three-dimensional trajectory similarity weight matrix, and calculating a dynamic symmetry index in combination with the cross-side difference coefficient of the joint stability quantitative index. According to the technical scheme provided by the invention, a scientific basis is provided for personalized rehabilitation treatment.

The utility model provides a multi-curvature ankle joint prosthesis which comprises a tibia prosthesis connected with a tibia, a talus prosthesis connected with a talus and a cushion block with one side connected with the tibia prosthesis, a joint contact surface is arranged on the other side of the cushion block, and a talus contact surface matched with the joint contact surface is arranged on one side of the talus prosthesis. The curvature of the sagittal plane Z in the talus contact face is reduced from front to back, and the instantaneous rotation center of the talus prosthesis on the joint contact face is in an arc shape. According to the multi-curvature ankle joint prosthesis, the talus contact face and the anatomical structure of the human body are high in consistency, the natural form and the motion mode of the ankle joint are accurately restored, the ankle joint prosthesis better conforms to biomechanics and kinematics in the motion process, the motion stability of the human body is improved, local friction stress of the ankle joint prosthesis is smaller, and the ankle joint prosthesis is more stable in motion. And the service life of the ankle joint prosthesis is prolonged, so that the durability of the ankle joint prosthesis is improved.

Disclosed in the present invention is a lower-limb-powered exoskeleton device for rehabilitation assistance, comprising ankle-joint sagittal-plane driving units, knee-joint sagittal-plane driving units, hip-joint sagittal-plane driving units, a hip-joint horizontal-plane driving unit, a joint driver connecting frame, a lower-limb fixing support, sensors, a controller and a power supply. Antagonistic-drive-type linear driving units are used in the sagittal plane of a hip joint so as to enable the bending and extension movements of the hip joint, and a linear driving unit having the function of self-locking when powered off is used in the horizontal plane of the hip joint so as to enable the turning movements of the exoskeleton; and a linear driving unit in cooperation with a magnetorheological brake is used in the sagittal plane of each knee joint, thereby significantly reducing the power consumption of a knee-joint driver while lowering the control difficulty. The powered exoskeleton device can help patients with an impaired lower-limb motor function to carry out walking rehabilitation training.

The invention belongs to the technical field of robots, and provides a hip joint exoskeleton and a walking assistance control method.The hip joint exoskeleton comprises three active driving units, and a hip joint exoskeleton sagittal plane driving unit is used for achieving forward flexion / backward extension of a human hip joint; the hip joint exoskeleton coronal plane driving unit is used for realizing human hip joint adduction / abduction; the hip joint exoskeleton horizontal plane driving unit is used for realizing inward rotation / outward rotation of the hip joint of the human body; the hip joint exoskeleton sagittal plane driving unit, the hip joint exoskeleton coronal plane driving unit and the hip joint exoskeleton horizontal plane driving unit are connected through the remote rotating center mechanism, so that a rotating plane corresponding to the horizontal plane driving unit is aligned with a hip joint rotating center through a virtual axis. The hip joint exoskeleton is compact in structure and saves space. According to the control method, when the user wears the exoskeleton to walk, the exoskeleton can accurately assist the walking of the user without time delay.

The application relates to a three-dimensional facial median sagittal plane construction method based on an intelligent registration algorithm, which has the following steps: (1) constructing a variable graph structure neural network algorithm for registration of a three-dimensional facial data ontology and mirror image point cloud, and the algorithm steps are as follows: 1) constructing feature vectors of key points in the ontology and mirror image point cloud data X and Y; 2) obtaining the corresponding relationship of the key points in the point cloud X and Y based on the feature vectors; and 3) calculating the rotation and translation matrix R and t of the mirror image data through singular value decomposition; (2) constructing a three-dimensional facial median sagittal plane through a principal component analysis algorithm; and the application can realize accurate and efficient construction of a three-dimensional facial median sagittal plane, and provides a new median sagittal plane construction solution for digital diagnosis and treatment in the oral clinic.

A multi-purpose detachable blade utility knife includes a handle with a forward and rearward section, divided by a mid-line sagittal plane. The forward section has a body portion and a removable blade cover, along with a forward-facing blade insertion slot. The rearward section features a blade storage compartment that pivots at the rear end. The knife accommodates a notched cutting blade with U-shaped retention notches and a slotted cutting blade with a blade retention slot. A blade retention mechanism in the forward section uses spring-activated push-button mechanisms to secure either blade in an extended cutting position.

The invention provides a face data processing method and device, electronic equipment and a storage medium, and relates to the technical field of face data. The method comprises the following steps: performing spatial configuration based on original coordinates of a plurality of key points obtained from an original 3D image, and constructing an original configuration and a mirror image configuration corresponding to the original configuration; obtaining a median sagittal plane corresponding to the original 3D image based on a target distance between the original configuration and the mirror image configuration; and correcting the original 3D image based on the median sagittal plane to obtain the corrected original 3D image so as to perform face detection on the face of the user. Based on the scheme, the construction accuracy of the median sagittal plane can be improved, so that a doctor can diagnose the facial deformity through the median sagittal plane with higher accuracy, the accuracy of the doctor in diagnosing the facial deformity can be improved, and the doctor can favorably treat the facial deformity and evaluate the postoperative treatment effect.

An ultrasound imaging system (102) includes a single transducer array (110) having a long axis and configured to transmit and receive in a first mode to acquire real-time ultrasound images of a sagittal plane during a surgical procedure, or in a second mode, acquiring 3D ultrasound data comprising a plurality of sagittal planes by rotating the single transducer array about an axis parallel to the long axis of the transducer array; a resampler (202) configured to resample the 3D ultrasound data and generate a set of resampled ultrasound planes that are approximately orthogonal to the surface of tissue of interest; a divider (204) configured to segment a first profile of the tissue of interest in the set of resampled ultrasound planes; and a registration engine (206) configured to register the first profile with a second profile of the tissue of interest in the pre-operative 3D MR image data and generate a fused 3D image.

A multi-purpose detachable blade utility knife includes a handle with a forward and rearward section, divided by a mid-line sagittal plane. The forward section has a body portion and a removable blade cover, along with a forward-facing blade insertion slot. The rearward section features a blade storage compartment that pivots at the rear end. The knife accommodates a notched cutting blade with U-shaped retention notches and a slotted cutting blade with a blade retention slot. A blade retention mechanism in the forward section uses spring-activated push-button mechanisms to secure either blade in an extended cutting position.

The application provides a human transcranial ultrasound irradiation method, device, electronic equipment and storage medium. The target head sagittal plane tomographic image and the transverse plane tomographic image are acquired; a vertical coordinate system is established based on the sagittal plane tomographic image, and the target point coordinates of the insula in the vertical coordinate system are determined; based on the transverse plane tomographic image, the horizontal distance from the insula to the target head brain midline is measured; the world coordinate point of the insula is mapped in the world coordinate system according to the target point coordinates and the horizontal distance; and the ultrasound transducer is controlled to irradiate the real position of the insula, so that accurate targeted irradiation can be realized, the use cost of the low-intensity focused ultrasound technology is effectively reduced, and the operation is simpler.

The present application discloses an image reconstruction method, device, storage medium, and electronic device, wherein the method includes: acquiring an original scanned image; the original scanned image is a three-dimensional stereoscopic image; performing a first high-frequency component removal process on a first plane of the original scanned image to obtain a processed first image; the first plane is a sagittal plane or a coronal plane; extracting a cross-sectional high-frequency component from the original scanned image to obtain a target high-frequency component; the target high-frequency component includes at least a first high-frequency component corresponding to the first plane; compensating the first image based on the target high-frequency component to obtain a first target image. The present application obtains a processed image by performing a sagittal or coronal high-frequency component removal process on the original scanned image, and then compensating the target high-frequency information extracted from the original scanned image to the processed image, thereby obtaining an image after removing windmill artifacts, making the reconstructed image clearer.

The invention provides an ankle-foot orthosis adaptation evaluation system and method based on three-point force detection, and relates to the technical field of orthosis, the ankle-foot orthosis adaptation evaluation system based on three-point force detection comprises a pressure acquisition module and an evaluation module, wherein the pressure acquisition module comprises a pressure sensor, a signal conditioning circuit, a power supply circuit, a wireless communication circuit and a main control unit, and is used for acquiring three-point force data values of three-point force correction sites corresponding to a sagittal plane, a coronal plane and a horizontal plane of a bare foot and transmitting the three-point force data values to the evaluation module through wireless transmission; and the evaluation module is used for comparing the three-point force data values with predicted three-point force values of a sagittal plane, a coronal plane and a horizontal plane, and judging whether the correction force of the ankle-foot orthosis reaches an expected correction state or not. Therefore, the adaptation condition of the ankle-foot orthosis is evaluated through multi-plane combined three-point force detection, so that the adaptation process of the ankle-foot orthosis is quantified, and the rehabilitation of a foot malformation user is promoted.

A design method of an anatomical plate for treating a tibial plateau fracture and an internal fixation device are provided. The design method includes: obtaining a high-precision three-dimensional model of a fractured bone of a patient; obtaining a post-reduction bone model; extracting point arrays of a cross section and a sagittal plane and obtaining solid body designs of a lateral plate body and a medial plate body; and adjusting thicknesses of proximal ends of the lateral plate body and the medial plate body, adjusting thicknesses of main bodies of the lateral plate body and the medial plate body, cutting the lateral plate body and the medial plate body from a sagittal plane according to a fit condition of the lateral plate body and the medial plate body, and determining a position and a direction of a screw hole to obtain a lateral anatomical plate and a medial anatomical plate.

There is provided an actuated exoskeleton for a lower limb of an individual, the exoskeleton comprising: - a trunk support configured to attach to a trunk of the individual and comprising a motorized actuator secured to the trunk support to generate a rotary movement about an axis perpendicular to the sagittal plane of the individual, - a lower limb segment support configured to attach to the lower limb, an articulated arm connected to the trunk support and to the segment support so as to form an articular connection, the articulated arm is connected to the trunk support by a first end and is connected to the lower limb segment support by a second end, wherein the articular connection is configured to drive the lower limb into motion in a plane parallel to the sagittal plane by displacement of the second end in the parallel plane. Abstract figure: Figure 1

The present application relates to a kind of personalized orthodontic bite gum, the bite gum is used to cooperate with the use of invisible aligner, the bite gum is horseshoe structure in horizontal plane view, it is wedge structure of back thin front thick in sagittal plane view;The bite gum includes bite gum pad, buccal side, lingual side, the buccal side and the lingual side extend to dental arch buccal side and lingual side from the bite gum pad;The bite gum is provided with the avoidance of corresponding arrangement with the invisible aligner, the avoidance is used to avoid weak position on the invisible aligner.The bite gum provided by the present application is mainly aimed at the cases of tooth extraction, tooth defect, replacement tooth period, tooth occlusal surface design, etc.Special device case, by setting avoidance, the bite gum can avoid weak position on the invisible aligner, prevent the deformation of aligner due to the use of bite gum, affect the treatment effect, reduce the use requirement to patient, improve the use efficiency of bite gum, save time.

A mandibular advancement device with enhanced stability, including an upper tray assembly formed by an upper moldable component and an upper bracket, and a lower tray assembly formed by a lower moldable component and a lower bracket. The upper bracket and the lower bracket each extend a front wall from their front side edges near the labial side, while at least the lower bracket extends a rear wall along the median sagittal plane from the rear side edge near the lingual side. The stability is achieved by inclining the front wall of at least the upper bracket towards the lingual side. The rear wall of the lower bracket works in conjunction with the front wall to clamp the lower dental arch. Additionally, the stability feature includes a molar clamping section, further enhancing the overall stability of the mandibular advancement device.

This invention provides a wearable myocardial oxygenation monitoring device based on optical path arrangement, comprising a detection component and a control component integrated into a flexible layer. The detection component includes multi-wavelength light sources arranged at an angle of 5° to 20° to the sagittal plane of the human body, detection components partitioned according to coordinate systems of 180° to 240° and 315° to 45°, and diagonally arranged electrocardiogram electrodes. The light sources correspond to the anatomical structure of the anterior interventricular groove of the heart. The control component achieves synchronous signal acquisition and processing via an FPC circuit board. Through precise anatomical positioning, partitioned detection, and flexible fit design, this invention solves the problem of difficulty in distinguishing the functional differences between the left and right ventricles in existing technologies. An adaptive light intensity modulation mechanism based on BMI ensures the optimal balance between signal quality and energy efficiency for different body types. Multi-data fusion enhances the early warning sensitivity of myocardial ischemia, making it suitable for people of different body types and providing a reliable tool for early screening of coronary heart disease.

The invention discloses a multi-view fusion pancreas segmentation method and system and a storage medium, and the method comprises the steps: decomposing a three-dimensional CT image of a pancreas organ, and obtaining two-dimensional CT images under three views of an axial plane, a coronal plane and a sagittal plane; respectively inputting the two-dimensional CT images under the three views of the axial plane, the coronal plane and the sagittal plane into an axial plane pancreas segmentation model, a coronal plane pancreas segmentation model and a sagittal plane pancreas segmentation model for processing to obtain pancreas region segmentation results under the three views; wherein the axial plane pancreas segmentation model, the coronal plane pancreas segmentation model and the sagittal plane pancreas segmentation model are obtained by training an initial pancreas segmentation model; fusing the pancreas region segmentation results under the three views by using a majority voting strategy to obtain a three-dimensional pancreas segmentation image; according to the method, cross-slice global context clues can be effectively integrated, and the accuracy and robustness of pancreas segmentation are improved.

A seat (1), in particular an office swivel chair, is described. The seat (1) is provided with a base (2), a base support (8) connected with the base (2), a pair of backrest connecting pieces (10) and a seat surface support (12). The backrest connecting piece (10) is connected with the base supporting piece (8) so that the backrest connecting piece can move along the sagittal plane. Furthermore, the seat surface support (12) is movably coupled to the backrest connection (10) and the base support (8), respectively, by means of at least one joint (20, 22, 26) having at least two rotational degrees of freedom.

The invention discloses a driver spine fine posture prediction method based on cabin arrangement parameters, and belongs to the technical field of automobile man-machine engineering. The method comprises the steps that human body characteristic data of a driver and cabin arrangement parameters are collected; fitting a back curve in the sagittal plane of the driver, and extracting curvature features; calculating a polar angle and a polar radius of each spine segment based on a pre-established regression formula; and finally, according to the skin surface spinous process mark points and the polar coordinate parameters, determining the spatial position of the mass center of each vertebra, and completing the fine posture prediction of the spine. According to the method, the limitation that the spine is simplified into three sections in the prior art is overcome, refined prediction of all the spine sections is achieved, the direct quantitative relation between the cabin arrangement parameters and the spine posture is established, the implementation cost and complexity are remarkably reduced, and the method is suitable for comfort evaluation and optimization in the forward design stage of the automobile cabin.

The invention relates to the technical field of ultrasonic image processing, in particular to an ultrasonic image processing method for epidural anesthesia localization, and the method comprises the steps: collecting a preset number of frames of sagittal plane ultrasonic images of a lumbar region through longitudinal scanning, and recognizing a sacrum spinous process possible region from each frame of sagittal plane ultrasonic image; performing sacrum feature analysis processing on each sacrum spinous process possible region, and screening out a target sacrum region based on sacrum feature indexes; performing spinous process characteristic analysis processing on the sacrum spinous process possible area; identifying an L4 spinous process region and an L3 spinous process region based on spinous process characteristic indexes corresponding to the sacrum spinous process possible region; and performing transverse scanning based on a region between the L4 spinous process region and the L3 spinous process region, and performing epidural space region identification on the cross section ultrasonic image. By processing the sagittal plane ultrasonic image, the epidural space area identification is realized, and the accuracy of epidural space area identification is improved.

This invention proposes a tibial liner and a total knee joint prosthesis. The tibial liner includes a medial liner and a lateral liner. The medial liner has a medial articular surface. The cross-sectional line formed by the intersection of the medial articular surface and the sagittal plane includes an anterior lip segment, a functional segment, and a posterior lip segment connected in sequence. The sagittal radius of the anterior lip segment is larger than that of the functional segment, which effectively reduces the height of the anterior side of the medial liner and avoids interference between the femoral prosthesis and the anterior side of the medial liner during posterior tilt assembly of the knee joint prosthesis, thus preventing interference with the normal contact of the articular surface.

A lateral patient positioning system may include a pelvic bolster assembly and a thoracic bolster assembly. Each of the assemblies may be attached to a conventional surgical table frame by the surgical table frame’s longitudinal rails. A plurality of adjustment mechanisms and components are provided to allow for easy and safe manipulation of a patient before and during surgery, including sagittal and / or coronal adjustment of a patient in a lateral position.

A method for using anatomical landmarks of a balance organ to construct a three-dimensional cephalometric coordinate system includes acquiring a CT image of a craniofacial region to be measured. The anatomical landmarks of the CT image are determined. On the basis thereof, a horizontal plane, and then a coronal plane and a median sagittal-plane plane are determined. The horizontal plane is a plane formed by certain of the anatomical landmarks. The coronal plane is determined using the horizontal plane and anatomical landmarks, and the median sagittal plane is determined using an anatomical landmark and both the horizontal and coronal. An intersection point of the three planes is used as the origin of a three-dimensional cephalometric coordinate system.

Orthopedic implants and related surgical methods for using same. The implants have suture bore geometries that facilitate performance of the surgical methods, thereby providing for improved optimal biomechanical force application in various anatomies. The implants include suture bores that have an angled / diagonal, or skewed, orientation within the anatomical planes (lateral / sagittal and frontal / coronal). The suture bores have the skewed orientation so that the adjacent soft tissues (i.e., tendons or ligaments) can be advanced via the suture therethrough in superior-inferior and inferior-superior directions. Openings, or holes, at the ends of the suture bores are configured to approximate the adjacent associated soft tissue to the implant.

The invention relates to a garment-steaming apparatus having a portable housing (3) comprising a steamer head (2), a portion to be gripped, an air suction circuit (24), a steam generating system, and a treatment face positioned in the front part of the steamer head (2), comprising a treatment plate (20) having at least one steam delivery opening (22) connected to the steam generating system, the treatment face comprising air suction openings (24) connected to the air suction circuit; wherein the treatment plate (20) is triangular, the treatment plate (20) comprising a first side and a second side which meet at an apex oriented towards the gripping portion, and having, opposite said apex, a main side that is normal to a sagittal plane of the steamer head (2).

1. Name of the product in this design: Graphical User Interface for Medical Imaging MPR Browsing in Electronic Devices. 2. Purpose of this design: This design is used for running programs and displaying information. 3. The key design features of this product are the graphical user interface displayed on the screen of the electronic device. 4. The picture or photo that best illustrates the key design points: Design 1 front view. 5. Other views have no design points, so rear view, left view, right view, top view, bottom view, and perspective view are omitted. 6. Design 1 is designated as the basic design. 7. Uses of the graphical user interface: for browsing MPR (multiplanar reconstruction) images of medical images, including two-dimensional images of the Axial, Coronal, and Sagittal planes, as well as three-dimensional images rendered in volume. 8. Human-computer interaction method of graphical user interface: Interact with the graphical user interface by clicking with the mouse to load the subsequent graphical user interface. 9. Description of the changing states of the graphical user interface: Design 1: Double-clicking the Axial image window in the main view of Design 1 displays the interface state change diagram 1; similarly, double-clicking the Coronal and Sagittal image windows will also display the corresponding interface state change diagrams; Design 2: Clicking the word "Coronal" in the Coronal image window in the main view of Design 2 will bring up a drop-down box, displaying the interface state change diagram 1; similarly, clicking the words "Axial" or "Sagittal" in the Axial or Sagittal image windows in the main view will also bring up a drop-down box; Design 3: Unchecking the corner mark in the main view of Design 3 will display the interface state change diagram 1; Design 4: Checking the zoom ruler in the main view of Design 4 will display the interface state change diagram 1; Design 5: Clicking the modify window width / window level tool (pen icon) in the main view of Design 5 will display the interface state change diagram 1. 10. Other situations requiring explanation: The specific image content and marking results in the interface vary depending on the image object and are not protected by this design.