49 results about "Mandible maxilla" patented technology

The invention provides a condyle positioning device and a lower jaw fixator with the condyle positioning device.The condyle positioning device comprises a condyle positioning component, a tooth retention guide plate and a dividing structure formed between the condyle positioning component and the tooth retention guide plate. Wherein the tooth retention guide plate and the condyle positioning component are of an integrated structure and can be separated along the segmentation structure, the condyle positioning component is suitable for being fixed to the front edge of the ramus of the mandible of a patient, and the tooth retention guide plate is manufactured based on the tooth form of the mandible part of the patient and fixed to the corresponding dentition. The condyle positioning component is connected with the lower jaw fixator through a mortise and tenon joint structure so as to position the specific position of the condyle of the patient after the lower jaw operation.

The present invention provides an osteosynthesis plate for fixing bone fragments in the repair of bone, particularly the mandible. [Solution] The plate body P comprises a plate body having at least one bridge portion BU used to bridge a gap S extending between bone fragments K1, the plate body comprising fixing portions BA1, BA2 each associated with at least one fixing point, at least one fixing point BP1, BP2 of the fixing portions formed on an island portion IA, the island portion being connected to each associated fixing portion only via spring segments FS1, FS2 which allow elastically restorable relative displacement between each fixing portion and each island portion, at least one of the spring segments causing relative displacement between the island portion and the associated fixing portion when a load is applied in the principal loading direction of the bone, and increasing the distance between the island portion and at least one bridge portion.

The invention relates to the technical field of oral tooth sockets, in particular to an oral bow adaptive adjusting tooth socket for stopping snore, which comprises an adaptive foundation, the adaptive foundation is used for fixedly adjusting the relative position relation of a connecting mechanism and a tooth socket assembly, and a connecting part is used for adjusting the tooth socket tension between an upper part and a lower part; the tooth socket assembly is composed of an upper tooth socket and a lower tooth socket and used for fixing the position of the mandible at different tooth positions adaptive to the foundation, and latticed lines and a plurality of T-shaped protrusions are distributed on the two sides of the upper tooth socket and the two sides of the lower tooth socket; the connecting mechanism is respectively connected with the tooth socket assembly and the adaptive foundation and is divided into an asymmetrical U-shaped upper part and an asymmetrical U-shaped lower part, trapezoidal latches are arranged on two sides of the U-shaped upper part and the U-shaped lower part, a plurality of adjusting holes are formed in the U-shaped bottom end, convex slide fasteners are arranged on two sides of the adjusting holes, and the tooth socket assembly can be clamped at different tooth positions of the adaptive foundation by the connecting mechanism. The distance between the upper jaw and the lower jaw is adjusted by moving the tooth positions and the connecting hole positions, and the device adapts to different oral cavity bow channel widths.

An intraoral device system includes an intraoral device; an upper splint structured to engage with at least a portion of one or more teeth on a maxilla of a patient; a lower splint structured to engage with at least a portion of one or more teeth on a mandible of the patient; a drive system for moving the lower splint with respect to the upper splint; and an adjusting feedback system. The adjusting feedback system can comprise a memory storing machine-readable instructions; and a control system including one or more processors configured to execute the machine-readable instructions. The machine readable instructions can cause the control system to: receive sensor data from one or more sensors associated with the patient; process the sensor data to determine a respiratory event likelihood parameter of the patient; and output control instructions to the intraoral device that operate the drive system to move the lower splint with respect to the upper splint responsive to the determined respiratory event likelihood parameter.

The invention relates to a system and / or an apparatus for an improved helmet system that may help reduce the severity of injuries by enhancing overall helmet protection through uniquely designed facemasks and facemask bumpers. The facemask and facemask bumpers that are particularly adapted to redistribute pressure and impact forces, decrease vibration, sudden shock, noise and / or the peak forces transmitted from the facemask to the rest of the helmet system. The facemask bumpers may be disposed into specific regions of the facemask, including the brow region, the glabella region, orbit region, the frontal region, the mandible (front, right and / or left side) region, the maxilla region, the nasal region, zygomatic region, the ethmoid region, the lacrimal region, the sphenoid region and / or any combination thereof.

The invention relates to the technical field of medical instruments, and provides a positioner for orthognathic surgery in order to solve the problems of large jaw bone positioning deviation, poor operation collaboration and insufficient flexibility in the surgery in the orthognathic surgery, the positioner comprises a fixing mechanism which sleeves the head of a patient and is used for providing a supporting reference relatively fixed with the head for the whole positioner; the distraction mechanism is connected to the fixing mechanism and used for distraction of lip and cheek soft tissue of the patient so as to expose an operation area; the positioning mechanism is connected to the lower portion of the distraction mechanism and used for locking the upper and lower jawbones of the patient at the preoperative designed positions and achieving reproduction. The device can synchronously realize skull reference fixation, stable exposure of soft tissues in an operation area and accurate positioning of the upper and lower jawbones, solves the problem of offset of the lower jawbones, supports rapid separation and reproduction of the positions of the jawbones in the operation, is adaptive to different patient forms, is suitable for various complex orthognathic operations, and improves the positioning accuracy and the operation collaboration.

Devices, methods, software, and kits are provided for performing oral therapy with biofeedback to provide real-time data for clinicians to aid in designing a customized therapy plan and track patient compliance with a prescribed therapy regimen. The device provides mouthpieces, which are capable of providing both passive and active range of motion for the jaw. Inclusion of a distance sensor on the device allows measurement of mandible range of motion or maximal interincisal opening. The force, applied to the upper jaw and lower jaw during oral therapy, can be controlled by inserting springs into the device, which have different spring constants. The force on the jaw can further be adjusted by using spring offset inserts. In addition, the maximum range of motion for the jaw can be set using interchangeable top limit brackets or a top limit bracket comprising an adjustable range of motion limiter.

The invention discloses a method for establishing a mouse radioactive jawbone injury animal model, which comprises the following steps of: performing tooth extraction operation, performing radiation treatment after one day, and performing Micro-CT (Computed Tomography) scanning, intraoral examination and histopathologic detection on the lower jawbone on the thirteenth day after radiation so as to determine that the radioactive jawbone injury mouse model is successfully constructed. The animal model has the advantages that the pathological process of human early radioactive jaw necrosis is accurately simulated; the model is stable, good in repeatability and suitable for large-scale experimental research; and a reliable, short-cycle and convenient-to-operate animal model is provided for the mechanism research of radioactive jaw necrosis and the development of new drugs.

The utility model discloses an adjustable jaw fixing device, which relates to the technical field of medical instruments, and comprises a lower jaw supporting plate and an elastic band, a driving mechanism is connected between two ends of the elastic band, the elastic band is connected with a cooling mechanism, a pair of first cavities is arranged in the lower jaw supporting plate, and a pair of second cavities is arranged in the lower jaw supporting plate. The elastic band penetrates through the two first cavities, and a pair of sliding blocks are fixedly connected to the elastic band; according to the adjustable jaw fixing device, a sliding block with an extension spring is arranged in a first cavity, an elastic band is fixed to the sliding block, adjustment of the elastic band can be achieved in cooperation with a fastening bolt, and therefore the adjustable jaw fixing device is suitable for patients with various lower jaw fractures, a hose capable of conveying cooling liquid is further arranged in the elastic band, and therefore the adjustable jaw fixing device is convenient to use. By matching with the driving mechanism and the cooling mechanism, circulating flow of cooling liquid can be achieved, a good cooling effect can be achieved, and the wearing comfort of a patient can be effectively improved.

Disclosed herein is a method for acquiring a dental object of a patient with an object volume, in particular at least a part of a skull, an upper jaw and / or a lower jaw. To do so, a plurality of segment volume ranges are defined in the object volume, where the segment volume ranges overlap at most partially and directions of the segment volume ranges are not parallel to one another. The image data of the segment volume ranges is recorded by an MRI machine within a measuring volume of the MRI machine. A two-dimensional composite image is generated from the image data of the individual segment volume ranges by projecting the image data onto a target plane. The target plane is disposed parallel to a defined midsagittal plane of the skull or corresponds to the midsagittal plane, where a first segment volume range at least partially includes the midsagittal plane of the skull.

The invention relates to a manufacturing method of silica gel snore-preventing equipment, and belongs to the technical field of medical products. The method comprises the following steps: S1, data acquisition and modeling; s2, registering: registering the three-dimensional tooth jaw model with a skull side position sheet to realize space alignment of the tooth jaw model and airway soft tissue; s3, measurement and analysis: measuring airway clearance, tongue shape and jaw position parameters; s4, personalized correction: automatically setting the protraction amount and the vertical opening amount of the lower jawbone according to the measurement result, designing the dental arch expansion width according to the WALA ridge and the FA point, and designing the inclined plane angle of the tongue induction screen to guide the tongue body to move forwards and upwards; and S5, manufacturing. The limitation that a traditional snore preventing device can only move the lower jaw forwards singly is broken through, the three-dimensional comprehensive expansion of the length, the width and the height of the airway is achieved by cooperatively regulating and controlling the three-dimensional posture of the lower jawbone, the width of the dental arch and the posture of the tongue body, the airway volume is effectively increased, the ventilation efficiency is improved, and the correction effect on OSAHS is remarkably improved.

The invention discloses a preparation method of a 3D printing PEEK network stent for repairing large-scale defects of lower jawbone, and belongs to the field of biomedical engineering and mouth rehabilitation, and the preparation method comprises the following steps: reversely deducing the elastic modulus required by the stent in a specific area according to local stress distribution by introducing a mechanical calculation formula, further optimizing the microstructure of the stent, and obtaining the 3D printing PEEK network stent for repairing the large-scale defects of the lower jawbone. And the stent can dynamically meet the growth requirement of bone tissues in the whole repair process, so that the regeneration of endogenous bones and blood vessels is effectively promoted.

Apparatus and method for installing a dental prosthesis to maxillary or mandibular jawbone of a patient are shown and described. The apparatus and method include a fixation base for providing an attachment surface and an abutment guide attachable to said fixation base in a position wherein the abutment guide is oriented to receive abutments and guide the abutments for placement on the implants. The abutment guide has at least one peg that is designed to be scannable by an intraoral scanner and is designed as a positioning structure that allows a dental prosthesis to be releasably attached to the abutment guide in a specific position.

The invention relates to an adjustable ophthalmology view inspection device, which comprises a view meter main body, the front end of the view meter main body is provided with an inspection cavity, one side of the view meter main body is provided with a display screen and a transponder, and the lower part and the upper part of the front end of the inspection cavity are respectively provided with a lower mounting box and an upper mounting box; a lower moving seat and a lower driving part capable of driving the lower moving seat to horizontally move are arranged in the lower mounting box, a lower jaw support is arranged on the top surface of the lower moving seat, and two lower jaw clamping plates are symmetrically arranged on the lower moving seat. The head fixing device has the advantages that the first bidirectional driving part and the second bidirectional driving part are used for driving the lower jaw clamping plate and the forehead clamping plate to be clamped at the lower jawbone and the forebone of a patient respectively, and the head of the patient is fixed. The head of a patient is directly fixed in a physical fixing mode, shaking of the head of the patient due to tension and the like is avoided, examination errors are reduced, and the probability that examination results are distorted, invalid and even cancelled can be effectively reduced.

Position data defining first enclosed regions (CA1 to CA6) of a plurality of known patients is accumulated in a database (20). The first enclosed regions are regions set on the basis of first landmarks (LM) for respective alveoli of each patient and each enclosed by a group of coordinates of the first landmarks belonging to one of a plurality of jaw sections obtained by dividing each of upper and lower jaws according to curvature positions along the horseshoe shape of the jaw. At the time of personal identification of a subject such as a corpse, second landmarks (LM) are set for respective alveoli of natural teeth in each of the upper and lower jaws of the subject in an X-ray image of the subject. On the basis of the second landmarks, a plurality of second enclosed regions (CA1' to CA6') are set, each of which is enclosed by a group of coordinates of the second landmarks belonging to one of a plurality of jaw sections obtained by dividing each of the upper and lower jaws according to curvature positions along the horseshoe shape of the jaw. The degree of similarity between at least one of the plurality of second enclosed regions and a first enclosed region in the database that corresponds to the at least one second enclosed region in terms of position is analyzed on a per-enclosed region basis. On the basis of the degree of similarity, the age or age range of the subject, or identification information of the subject is estimated.

The invention discloses an accessory adjusting method and device of an orthodontic appliance, electronic equipment and a computer readable storage medium. The method comprises the following steps: identifying a rotation reference point of a lower jawbone of a user and a current position of a target tooth of the user; determining a first rotation radius of the target tooth according to the current position and the lower jawbone rotation reference point; the standard thickness of the orthodontic appliance is obtained, and the lower jawbone rotation angle of the user is determined according to the first rotation radius and the standard thickness; according to the rotation angle of the lower jawbone, the correction amount of the orthodontic appliance on to-be-adjusted teeth is determined, and the to-be-adjusted teeth are teeth except the target teeth in the oral cavity of the user; the height of the accessory corresponding to the tooth to be adjusted is adjusted based on the orthodontic amount, so that the accessory height of the orthodontic appliance is matched with the orthodontic amount, passive lowering of the second molar due to point contact can be prevented, occlusion alignment of the upper jaw and the lower jaw is improved, and stable occlusion contact of the teeth of the upper jaw and the lower jaw in the process of wearing the orthodontic appliance is ensured.

A system having a skull tracking bracket; a mandible motion tracking bracket; a motion detecting camera; an electromyography sensors adapted to detect and measure facial muscle activation data and transmit the data to the computerized controller; an audio sensor carried by the subject and adapted to detect and measure sound data associated with jaw (and joint) movement data and transmit the data to the computerized controller; a bite force sensor adapted to detect and measure static and dynamic bite force data; a pain push-button switch (or other sensor) adapted to be activated by the subject when experiencing pain; and a computerized controller is adapted to receive motion data, facial muscle data, joint sound data, static and dynamic bite force data, pain data, and received a set of three-dimensional images of the subject, overlay the detected motion with the three-dimensional image and display the overlay.

The invention discloses a digital periodontal soft tissue prognosis prediction method, an aesthetic design method and a system, and the method comprises the steps: obtaining original CBCT image data, carrying out the data processing, obtaining a three-dimensional data model, carrying out the recognition, segmentation and post-processing of a hard tissue anatomical structure in the three-dimensional data model, and obtaining the three-dimensional digital model data of a tooth root and upper and lower jawbones; the method comprises the following steps: acquiring original scanning image data, converting the acquired original scanning image data into point cloud data, and performing optimization processing and feature extraction on the point cloud data to obtain a dental crown and gingival soft tissue three-dimensional digital model; registering and fusing the three-dimensional digital models of the tooth root and the upper and lower jawbone as well as the dental crown and the gingival soft tissue to obtain an initial three-dimensional digital oral cavity anatomical model, carrying out geometric operation, and carrying out stretching treatment by utilizing a Laplace surface editing algorithm to obtain a three-dimensional digital oral cavity model; and performing visual display and interactive analysis on the initial three-dimensional digital oral anatomical model and the three-dimensional digital oral model, and predicting a prognosis effect.

The invention discloses an adaptive manufacturing method and system for an orbital orthotope, and the method comprises the steps: fusing a dental digital model of a patient and a tooth socket digital model of an invisible tooth socket into a merged model which reflects the dental state of the patient wearing the invisible tooth socket; according to the combined model, a corresponding accommodating tooth socket is generated in the orthodontic device main body base block to accommodate an invisible tooth socket, so that an orthodontic device model is generated, and the orbital orthodontic device obtained by pressing a diaphragm according to the orthodontic device model can be used after a patient wears the invisible tooth socket in an overlapping manner. Therefore, the orbital orthosis can be utilized to stimulate children's muscles to improve oral muscle functions and skeletal development, and additional orthodontic force can be provided to make up for the defects that the orthodontic force becomes weak and the occlusal relationship between upper and lower jawbones cannot be corrected due to the fact that the invisible tooth socket is prone to stress relaxation.

The application discloses a kind of orthodontic appliance after orthognathic surgery without bracket, including: upper jaw appliance and lower jaw appliance, and several pads, several pads are located in the opposite side of upper jaw appliance and lower jaw appliance, to make upper jaw appliance and lower jaw appliance exist occlusal clearance.Therein, at least one pad is provided with guide structure along occlusal direction, for making upper jaw appliance and lower jaw appliance keep preset relative position in occlusion state. On the one hand, by setting pad, upper jaw appliance and lower jaw appliance can be blocked to avoid individual tooth contact to form fulcrum swing, leading to unstable occlusion of upper and lower jaw bones;On the other hand, upper and lower dentition is unique in rest position, reduce the force of appliance on teeth and affect the stability of jaw bone. In addition, the application realizes that during use, it can avoid the displacement of upper and lower jaw bones caused by intermaxillary traction, consolidate the purpose of orthognathic treatment effect.

Abstract OSTEOSYNTHESIS PLATE The invention relates to an osteosynthesis plate (OP, OPʹ, OP", OP"ʹ), which is provided for a fixation of bone fragments (K1, K2) for the restoration of a bone (K), in particular a mandible, comprising a plate body (P, Pʹ), wherein the plate body (P, Pʹ) has at least one bridge section (BU, BU1, BU2) which is used to bridge a gap (S) extending between the bone fragments (K1, K2), wherein the plate body (P, Pʹ) is equipped with fixation sections (BA1, BA2, BA1ʹ, BA2ʹ, BA3ʹ) with each of which at least one fixation point (BP1, BP2, BP1ʹ, BP2ʹ, BP3ʹ) is associated, wherein the at least one fixation point (BP2, BP1ʹ, BP2ʹ) on at least one of the fixation sections (BA1, BA2, BA1ʹ, BA2ʹ, BA3ʹ) is formed on an island section (IA, IAʹ) which is connected to the respective associated fixation section (BA2, BA1ʹ, BA2ʹ) exclusively via spring segments (FS1, FS2, FS1ʹ, FS2) which permit a relative displacement of the respective fixation section (BA2, BA1ʹ, BA2ʹ) and of the respective island section (IA, IAʹ) relative to one another in an elastically resilient manner, wherein at least one of the spring segments (FS1, FS2, FS1ʹ, FS2) is aligned in such a way that, when a load (B) is applied in a main loading direction of the bone (K), a relative displacement takes place between the island section (IA, IAʹ) and the fixation section (BA2, BA1ʹ, BA2ʹ) associated with this island section (IA, IAʹ), during which a distance between the island section (IA, IAʹ) and the at least one bridge section (BU, BU1) increases. FIG. 1A Abstract FIG. 1A 20 25 27 15 58 01 D ec 2 02 5 A b s t r a c t 2 0 2 5 2 7 1 5 5 8 0 1 D e c 2 0 2 5 KLS0047P K1 BP1 K S IA D1 FS2 K2 BP2 S21 GS1 S11 P SM1 1 / 6 BA1 DO1 BU FS1 OP D2 OS DO2 BA2 S12 GS2 S22 Fig. 1A 2024-12-19 20 25 27 15 58 01 D ec 2 02 5 2 0 2 5 2 7 1 5 5 8 0 1 D e c 2 0 2 5 K L S 0 0 4 7 P 2 0 2 4 - 1 2 - 1 9

The present invention provides an osteosynthesis plate for fixing bone fragments in the repair of bone, particularly the mandible. [Solution] The invention comprises a plate body P, the plate body having an upper surface OS and a lower surface for positioning the plate body on bone fragments K1 and K2, the plate body having a plurality of fixing parts BA1 and BA2, the bone fixation plate OP being fixed to the bone fragments at the lower surface of the plurality of fixing parts, each of the plurality of fixing parts being associated with at least one fixing point BP1 and BP2, at least one fixing point of the fixing parts being formed on an island part IA, the island part being connected to the relevant fixing part of the plate body only via spring segments FS1 and FS2 that allow elastically restorable relative displacement between each fixing part and each island part, and the spring segments asymmetrically surrounding the fixing point associated with the spring segments.

The application discloses a kind of implant navigation methods, systems, electronic equipment and storage medium for oral medicine image AI maxillofacial reconstruction, belong to oral medicine image processing and intelligent implant planning field.The method obtains oral CBCT data, after pre-processing, automatic segmentation is carried out to dentition, maxilla, mandible, inferior alveolar nerve canal and maxillary sinus and other key anatomical structures, and three-dimensional reconstruction is carried out;Determine the candidate implant region based on the spatial relationship of dangerous anatomical structure and edentulous area, optimize the position, angle and length of implant under the preset safety constraint, and then generate implant guide plate design parameters and three-dimensional model.The scheme can improve the efficiency of preoperative planning of oral implantation, the accuracy of key structure identification and clinical safety.

The utility model discloses a head fixing body position frame, and particularly relates to the technical field of head fixing frames, the head fixing body position frame comprises a soft cushion, a lower jawbone groove used for being attached to the lower jawbone of a patient is machined at the rear end of the soft cushion, rotating rods are fixedly arranged on the two sides of the soft cushion, mounting plates are arranged on the outer walls of the two rotating rods in a sleeved mode, adjustable screws penetrate through the two mounting plates, and the lower jawbone groove is matched with the lower jawbone of the patient. And one ends of the adjustable screws penetrate through the mounting plates and abut against the outer wall of the soft cushion, supporting assemblies are fixedly arranged at the bottom ends of the two mounting plates, and each supporting assembly comprises a first support fixed to the bottom end of the corresponding mounting plate. The silica gel cushion is used for fixing and limiting the head of a patient, the phenomenon that the head of the patient shakes to interfere with normal operation can be effectively avoided, in this way, medical workers do not need to support the jaw of the patient with hands for fixing, the workload of the medical workers is greatly relieved, and in addition, the cushion can be flexibly rotated by loosening the adjustable screw, and operation is convenient. And the raising angle of the head of the patient is changed so as to meet the requirements of different operative positions.

Apparatus and method for installing a dental prosthesis to maxillary or mandibular jawbone of a patient are shown and described. The apparatus and method include a fixation base for providing an attachment surface, where the fixation base has at least one feature that is designed to be scannable by an intraoral scanner.

The invention relates to the technical field of medical models, in particular to a medullary tooth model for training and researching an apical operation and a manufacturing method of the medullary tooth model. According to the method, after the model with the medullary teeth is manufactured, CBCT equipment is used for scanning the manufactured model with the medullary teeth again, in the scanned image, the teeth, the oral mucosa, the maxilla and the mandible respectively have three different developing degrees, the teeth can be accurately distinguished from the maxilla and the mandible according to the image, and the accuracy of the tooth identification is improved. The anatomical structures of real teeth, the maxilla and the mandible are simulated by using the model, and operation training and research are facilitated.

A facemask and accessories which overcome the adverse effects and limitations of current designs by moving the maxilla and mandible in forward direction, which assists in correcting maxillary and mandibular skeletal and dentoalveolar deficiency and help expand the upper airway by advancing the mandible. This is accomplished by a design that is supported only by forehead and produces forces in front of maxilla and mandible. The extra-oral facebow design is characterized by providing two independent force adjustments, one above the forehead and the other one in front of the face by attachments to the upper and lower jaw bones and teeth. In particular, the two independent adjustments are provided by a fully adjustable forehead pad and bilateral adjustable bows on opposite sides of the facebow's extra-oral frame to provide protracting forces.

The invention provides a method for generating a digital jaw pad based on joint intelligent interaction system navigation, which comprises the following steps of: acquiring multi-modal data of a patient and inputting the multi-modal data into a multi-modal fusion model to generate a digital dental three-dimensional model and an analysis result, iteratively adjusting the position of the lower jawbone of the digital dental three-dimensional model to a treatment position by adopting a multi-objective optimization algorithm; processing the port scanning STL data through an intelligent design engine to obtain an undercut area; the digital jaw pad is manufactured based on the position and the undercut area of the lower jawbone of the treatment position. The high-precision digital jaw pad is generated based on navigation of a full-process closed-loop joint intelligent interaction system fusing multi-modal data, dynamic evaluation, intelligent design and precise preparation.

This invention discloses a three-dimensional maxillofacial reconstruction method based on cone-beam CT images of dentofacial deformities, relating to the fields of medical image processing and computer vision technology. The method includes: constructing a three-dimensional maxillofacial reconstruction network model for orthognathic surgery of dentofacial deformities; utilizing piecewise rigid transformation constraints based on weakly supervised learning to avoid predicting geometric deformations of bone tissue, enhancing the semantic correspondence of predicted maxillofacial bone tissue structures after orthognathic surgery; decomposing the non-rigid deformation field between images before and after orthognathic surgery into partially truncated rigid transformations of maxillary and mandibular bone tissues; generating a voxel-dense deformation field with good interpretability for the maxillofacial morphological changes brought about by the orthognathic process; and improving the accuracy of three-dimensional maxillofacial reconstruction during the orthognathic process of dentofacial deformities.