158 results about "Sagittal plane" patented technology

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.

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.

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 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 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.

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).

Disclosed is an open earphone, comprising a sound production component and an ear hook. The ear hook may include a first portion and a second portion connected in sequence. The first portion may be hung between the auricle of a user and the head of the user, the second portion may extend toward a front outer side of the auricle and connect the sound production component, and the sound production component may be located close to the ear canal but not block the opening of the ear canal; wherein the sound production component and the auricle may have a first projection and a second projection on a sagittal plane, respectively, a centroid of the first projection may have a first distance from a highest point of the second projection in a vertical axis direction, a ratio of the first distance to a height of the second projection in the vertical axis direction may be within a range of 0.25-0.6, the centroid of the first projection may have a second distance from an end point of the second projection in a sagittal axis direction, and a ratio of the second distance to a width of the second projection in the sagittal axis direction may be within a range of 0.4-0.7.

This is a description of a sitting device. It consists of a base and a seat connected to the base such that it pivots around a seat axis. The seat axis is horizontal and orthogonal to the depth direction of the seat. The connection that allows the seat to pivot about the base is positioned against the seat such that the seat pivots forward in a sagittal plane when a user sits on it. The seat of the sitting device can also be elastically biased to rotate backward in the sagittal plane. The sitting device also comprises a lumbar support, which rotates with the seat, and a support pad, designed to support the user’s upper thighs, with the pad connected to front portion of the seat. The lumbar support is positioned such that it rests against the user’s back, by their lumbar vertebrae, when the device is in use.

The invention discloses a safety constraint optimization gait planning method and device for a lower limb exoskeleton rehabilitation robot, and the method comprises the steps: designing an ACPG (adaptive central pattern generator) network topology for sagittal plane activity space limitation, and achieving the generation of a personalized gait track with a biological rhythm under human-computer interaction; on the basis of interaction torque and joint speed fed back by sensing, energy of human body active movement injected into the exoskeleton is calculated; constructing an intermediate variable according to the energy weighting, designing a gait adjustment model in combination with an admittance model, and outputting a self-adaptive smooth gait frequency and an amplitude modulation factor; based on the gait adjustment model, by using a control barrier function optimization theory, gait frequency and amplitude change are constrained within a safety range, so that the ACPG outputs rhythm gaits and meets safety requirements at the same time. According to the method, the energy change under the human-computer interaction effect is considered, and the personalized gait track with safety protection is generated.

The present disclosure relates to an earphone including a sound production component and an ear hook. In a wearing state, the ear hook is configured to place the sound production component at a position near an ear canal but not blocking the ear canal. An inner contour of a projection of the ear hook on the user's sagittal plane includes a first curve that has an extremum point in a first direction. The first direction is perpendicular to a long-axis direction of a projection of the sound production component. The extremum point is located behind a projection point of an upper vertex of the ear hook on the user's sagittal plane, and the upper vertex of the ear hook is the highest point of an inner contour of the ear hook along a vertical axis of the user.

A method of designing a pair of fixation rods for implantation on a patient's spine includes: modelling the spine: determining a corrected vertebrae position; modelling the corrected spine by: realigning the vertebrae in the frontal plane, rotating the sacral plateau in the sagittal plane, modifying angulation in the sagittal plane between the adjacent plates of the discs, changing angulation between one or two vertebrae in the sagittal plane, and modifying the height of each disc; calculating a point cloud passing through the centers of the vertebral bodies; deducing two point clouds on either side of the first, spaced in the frontal plane by the width of the vertebra multiplied by X, and located in the sagittal plane at a distance equivalent to the depth of the vertebra in the sagittal plane multiplied by Y, X and Y being a function of the instrumentation connecting the rod to the spine.

The invention discloses a multi-anatomical structure space mapping method and system based on a medical image and a three-dimensional model, and relates to the technical field of medical image processing, and the method comprises the following steps: S1, obtaining a medical image data sequence according with a DICOM standard, analyzing and extracting DICOM header file information, automatically constructing a display interface of a multi-plane two-dimensional medical image view, and displaying the display interface of the multi-plane two-dimensional medical image view; the display interface at least comprises an axial plane view, a sagittal plane view and a coronal plane view which are mutually orthogonal; the external three-dimensional model is accurately aligned to the internal anatomical space of the patient by adopting the mapping and registering technology of the DICOM space information and the three-dimensional model in the general three-dimensional format, namely seamless loading and management of the medical image data and the general three-dimensional model in a unified platform are realized; and spatial alignment between three-dimensional models and medical images of different data sources is realized, so that the efficiency of consistent linkage display between a three-dimensional space and a two-dimensional section is greatly enhanced.

The invention relates to a prosthetic foot insert (10) having a. A proximal fastening device (20) for fastening the prosthetic foot insert (10) to a proximal part (2) or a patient, b. A holder (30) which is arranged distally with respect to the fastening device (20) and which is connected to the fastening device (20), and c. A main spring (40) which extends into a forefoot region (11) and is coupled to the holder (30), the retaining part (30) is mounted on the main spring (40) in a pivotable manner in a sagittal plane, a rear limiting element (92) is arranged between the main spring (40) and the retaining part (30), said rear limiting element limiting a displacement of the retaining part (30) away from the main spring (40), and the fastening device (20) is mounted on the retaining part (30) in an articulated and longitudinally displaceable manner.

An ironing apparatus having a portable housing (3) comprising an ironing head (2), a grip portion, an air suction circuit (24), a steam generation system, and a treatment face positioned at a front portion of the ironing head (2), the treatment face comprising a treatment plate (20) having at least one steam distribution aperture (22) connected to the steam generation system, the treatment face comprises a plurality of air suction holes (24) connected to an air suction circuit; the treatment plate (20) is in the shape of a triangle, the treatment plate (20) comprises a first side and a second side which are joined at a top, the top is oriented on one side of the grip portion, and the treatment plate has, opposite the top, a main side perpendicular to the sagittal plane of the screed head (2).

Disclosed is a base ship that can receive, in a removable and interchangeable manner, a particular module among various modules, the module being adapted to a functional specialization of the ship. The base ship is similar to a catamaran in its rear portion because it includes two parallel rear lateral volumes that are substantially symmetric with respect to a vertical longitudinal sagittal plane of the base ship, and the removable module is inserted and secured between the two rear lateral volumes of the base ship in order to form a functionalized ship.

The invention provides radiotherapy equipment, a calibration die body and a positioning lamp calibration method. The radiotherapy equipment comprises an annular rack, three positioning lamps and support assemblies in one-to-one correspondence with the positioning lamps. The three sets of support assemblies are arranged in the circumferential direction of the annular rack at intervals, and each positioning lamp is arranged on the corresponding support assembly and is adjustable in posture. The postures of the three positioning lamps meet the condition that one positioning lamp emits a positioning light beam corresponding to the sagittal plane of the human body, and the other two positioning lamps are oppositely arranged and respectively emit two positioning light beams which are perpendicular to each other and correspond to the cross section and the coronal plane of the human body one to one; and positioning light beams emitted by the three positioning lamps are intersected at a set virtual isocenter. According to the radiotherapy equipment, the positioning lamp is directly arranged on the annular rack of the radiotherapy equipment, so that the distance between the positioning lamp and the virtual isocenter is reduced, the moving distance of a user can be reduced in the process of debugging and calibrating the positioning lamp by the user, and the debugging and calibrating efficiency of the positioning lamp is improved.

The embodiment of the invention provides an earphone. The method comprises the following steps: the earphone comprises a camera which can collect an environment image of a wearer; a communication module, through which the earphone sends the environment image shot by the camera to an external device; wherein when the earphone is in a wearing state, the included angle between the optical axis of the camera and the horizontal plane of a human body is-10 degrees to-35 degrees, and the included angle between the optical axis of the camera and the sagittal plane of the human body is-20 degrees to 5 degrees. The view field of the camera is prevented from being shielded by the human face, and the accuracy of data acquisition of the camera is improved.