17 results about "Facial bone" patented technology

The utility model discloses a bone conduction hearing aid which comprises a host, one end of the host is fixedly connected with a supporting column, the top end of the supporting column is fixedly connected with a connecting sleeve, one end of the host is fixedly connected with an adjusting mechanism, the connecting sleeve is sleeved on the end portion of a spectacle frame, and the bone conduction hearing aid is limited and fixed through the spectacle frame. The main machine and the spectacle frame cannot clamp and extrude each other, the ear pain problem is avoided, meanwhile, the bone conduction sound transmission device can be smoothly attached to the skull or the facial bone through the downward concave part, normal work of the bone conduction sound transmission device is guaranteed, and the sound transmission efficiency is improved. The position of the bone conduction sound conducting device in the vertical direction can be adjusted through the connecting column, meanwhile, the position of the bone conduction sound conducting device in the horizontal direction can be adjusted under the action of the rotating shaft, the bone conduction sound conducting device can be adjusted to the proper position through the two different adjusting modes, and therefore the use requirements of different patients are met; the use by different patients is convenient.

The utility model provides a facial bone phase correction structure, which belongs to the technical field of medical instruments, and aims to solve the problems that a single corrector cannot provide accurate correction assistance, the correction effect can be influenced by different facial forms, and the single corrector is inconvenient to wear, the facial bone phase correction structure comprises a head ring, two sides of the head ring are connected with face belts through side belts, a hanging bracket is arranged on the side belt in a sliding mode, a lower jaw support is arranged below the face belts, the two ends of the lower jaw support are hinged to the corresponding hanging bracket, a lifting mechanism is arranged between the hanging bracket and the head ring, a supporting buckle is connected to the rear portion of the head ring through a connecting belt, and a reel is connected to the supporting buckle through a tightening mechanism. The lower jaw support is lifted to be matched with different face shapes, the lower jaw support is tightened through the inhaul cable to complete correction assistance, and use is simpler.

FACIAL BONE PLATE CONTOURING DEVICE

This application provides a facial skeleton rigging method, apparatus, electronic device, and storage medium. The facial skeleton rigging method includes: binding facial bones to facial mesh data in the initial state of the character to be constructed, obtaining a first binding result; loading a historical skeleton controller and first controller parameters of the historical skeleton controller; calculating the facial bone position using the first controller parameters, obtaining the vertex position of the first facial mesh; and optimizing the first binding result based on the vertex position of the first facial mesh, the facial mesh data, and the first controller parameters to obtain a second binding result. Calculating the facial bone position using controller parameters and optimizing the first binding result using the vertex position of the facial mesh and the facial mesh data as ground truth significantly improves the rigging effect of facial skeleton rigging.

A system and method are disclosed to estimate bone health wherein a cross-sectional shape of cortical bone is segmented and parameterised and regions of internal bone extracted. Typically, two regions of internal bone structure are extracted and quantified (cortical and trabecular), or three regions of internal bone structure are extracted and quantified (cortical, endocortical and trabecular). Metrics including, but not limited to, absolute volume, relative volume, volumetric bone mineral density (BMD) and areal bone mineral density (BMD) are measured from the extracted regions. The system and method accurately estimate bone health as an incidental finding from standard imaging procedures. It is robust to several imaging acquisition techniques.

An embodiment of the present invention provides a method and apparatus for generating an expression animation. The method includes: obtaining audio data and / or text data; driving the audio data and / or text data to obtain phoneme-based facial animation data; converting the phoneme-based facial animation data into animation data of a preset standard; obtaining a set of bone expressions corresponding to facial bones; and driving the set of bone expressions according to the animation data of the preset standard to generate a first expression animation of the facial bones. This ensures the generality of the expression animation production process, is compatible with different facial data sources, provides a basic condition for subsequent decoupling of facial animation data, and the method of driving animation data based on a set of bone expressions can decouple the animation data from specific facial skeleton data. The same set of bone expressions can be output for different skeletons, enabling animation retargeting and effectively improving the time for producing expression animations.

An eyebrow driving mechanism for bionic expressions comprises a facial bone structure and at least one mounting support, at least one driving unit device is mounted on the mounting support, a double-end rocker arm structure is arranged at the output end of the driving unit device, and the two ends of the double-end rocker arm structure are connected with control stay wire structures respectively. The telescopic control states of the two control stay wire structures are opposite, at least one eyebrow base piece is arranged on the outer surface of the facial bone structure, one control stay wire structure is connected to the upper side of the eyebrow base piece, and the other control stay wire structure is connected to the left side or the right side of the eyebrow base piece. The eyebrow movement control device is simple in structure, high in eyebrow movement control precision and stability, low in manufacturing cost, small in occupied space, high in adaptability of spatial position and posture layout, and beneficial for arranging more facial expression control units in the limited space of the head, and the use of driving units is reduced.

The present invention proposes a method and apparatus for three-dimensional overlay measurement of teeth and facial bones using the entire skull base as a reference plane. This method obtains CBCT (cone-beam computed tomography) data from the preceding and following phases to be compared, converts the CBCT data format, and then constructs three-dimensional models of the teeth and jaws for comparison. The coordinate system is then determined, and the landmarks of the entire skull base plane, including the skull base point (Ba), nasion point (N), bilateral supraorbital notches (UOrN), and bilateral infraorbital margin midpoints (O), are marked to determine the standard skull base plane. Using this standard plane as the reference plane, the CBCT data to be compared are overlaid. After automatic computer recognition, the overlay is re-registered, and the three-dimensional changes in the teeth, alveolar bones, and facial bones are marked and measured. Through the present invention, CBCT data of a patient's dentition and jaw can be converted into 3D models and overlaid, enabling the evaluation and measurement of changes in the teeth and jaws in three dimensions.

The application relates to a jaw and facial bone fracture internal fixation plate selection decision method and system, which belongs to the technical field of medical artificial intelligence and relies on a pre-trained degradable internal fixation material prediction model and a titanium internal fixation material prediction model. The two kinds of implant materials can be simultaneously quantitatively evaluated based on the same preoperative characteristic data of a patient, the risk levels of the two kinds of materials are divided by corresponding threshold values, and then individualized material selection suggestions are output by combining double risk level linkage determination rules. Unlike the traditional selection method which only relies on the subjective judgment of the clinical experience of doctors, the method realizes the quantitative correlation between the baseline characteristics of the patient and the prognosis risk of the material, avoids the defect that a single group comparison conclusion cannot adapt to individualized diagnosis and treatment, quantitatively evaluates the objective and repeatable risk assessment results, effectively improves the scientificity and precision of the selection of the internal fixation material for the jaw and facial bone fracture, and reduces the probability of selecting an unsuitable implant material for a patient with a high complication risk.

This invention discloses a novel external cranial support for maxillofacial bone traction, comprising: two lateral fixation members, each fixed to the temporal region above the ear on both sides of the skull by three first screws; a cranial top fixation member, fixed to the cranial top by two second screws; two angle rulers, each fixed to one of the lateral fixation members, with a sliding member on the side of each angle ruler and a telescopic member on the angle ruler, one end of which is coaxially fixed to the angle ruler and the lateral fixation member, and the middle of which is fixed to the sliding member; and a solid metal rod, each end of which passes through the other end of the two telescopic members, with two pulling members on the solid metal rod, the other ends of which are connected to the facial bones. This invention achieves more reliable fixation while significantly reducing costs.

Scheme "Automated personal identification system based on the dynamics of facial bone fracture healing in a series of postmortem CT images"

The utility model discloses a line-shaped minimally invasive wrinkle-removing detacher with equal perimeters of a head part and a rod part, and belongs to the technical field of cosmetic surgical instruments, a detacher head, a first connecting rod and a second connecting rod can reduce the size of a skin incision, when the detacher needs to be bent for facial bony fitting, a bending piece is bent, and the detacher head and the second connecting rod can be conveniently detached. A first connecting rod and a second connecting rod can form an arc, so that fitting operation of facial bony during use is facilitated, the use convenience is improved, the material of the dissector connecting rod is not limited, and the practicability is improved. The dissector comprises a handle, the first connecting rod is fixedly connected to the handle, and the second connecting rod is fixedly connected to the handle; a bending piece is integrally formed at one end of the first connecting rod, a second connecting rod is integrally formed outside the bending piece, a stripping head is fixedly connected to the end of the second connecting rod, and the thickness of the bending piece is one third of the diameter of the first connecting rod.

The present disclosure discloses a zonal trabecular uni-compartmental femoral condylar component containing zirconium-niobium alloy on oxidation layer and preparation method, including following steps: using zirconium niobium alloy powder as raw material, conducting a 3D printing for one-piece molding to obtain an intermediate product of the uni-compartmental femoral condylar component, performing hot isostatic pressing and cryogenic oxidation to obtain the uni-compartmental femoral condylar component; the uni-compartmental femoral condylar component includes an articular surface and an osseointegration surface, a bone trabeculae is arranged on the osseointegration surface. The present invention can reduce the fretting wear of the interface between the prosthesis and the bone, and reduce the stress shielding effect of the prosthesis on the bone tissue, homogenize the stress of the femoral condylar bone tissue, and improve the initial stability and long-term stability of the uni-compartmental femoral condylar component.

The present invention discloses a method for detecting and repairing maxillofacial CT fractures guided by geometric structure priors, which mainly solves the problems that existing methods are not applicable to the repair of fractured bones and cannot better restore the occlusal function of patients. The implementation scheme is as follows: Obtain the CT data of maxillofacial fracture patients, construct a fracture localization data set and a bone contour data set, and train a fracture detection model and a bone contour segmentation model respectively based on these; construct a simulated fractured defect bone contour training data set and a fractured bone test data set according to the trained models; construct a maxillofacial contour repair model based on geometric prior-guided self-attention learning, and use the simulated fractured defect bone contour training data set to train it using an adaptive learning rate optimization algorithm; input the fractured bone test data set into the trained maxillofacial contour repair model based on geometric prior-guided self-attention learning to simulate the normal facial bone contour. The present invention can effectively restore the occlusal function of facial fracture patients and can be used for the repair of the bones of facial fracture patients.

A dual predrilling module for drilling a fixation hole and a repair tunnel in a bone is provided. The dual predrilling module includes a body comprising a bone interface side comprising a bone contacting surface engageable with a surface of the bone or a fixation plate engaging side removably engageable with a fixation plate, and an operative side opposite the bone interface side or the fixation plate engaging side. The dual predrilling module further includes an osteotomy drill guide to create a fixation hole according to a fixation hole pathway, and a repair drill guide extending outwardly to create a repair tunnel according to a repair tunnel pathway, the repair tunnel pathway being determined to intersect a predetermined cutting plane intended to create an osteotomy and to extend across the bone to open to an articular surface of bone, without intersecting the fixation hole pathway.

The invention belongs to the technical field of maxillofacial region image analysis, and provides a maxillofacial region soft tissue model generation method for an orthodontic process. Respectively constructing a current finite element data block and a reference finite element data block, and analyzing the distribution condition of various soft tissues of the reference finite element data block corresponding to the current finite element data block to obtain a distribution probability set of the various soft tissues in the current finite element data block; segmenting the current finite element data block based on the distribution probability set to obtain a plurality of sub-finite element data blocks and a sub-distribution probability set; and finally, on the basis of the sub-distribution probability set, soft tissue distribution consistency between the sub-finite element data blocks and all neighborhood sub-finite element data blocks is analyzed, the sub-finite element data blocks are combined, and a more accurate soft tissue model structure of the current patient can be obtained.