691 results about "Jaw bone" patented technology

The invention discloses a three-dimensional stomatognathic model reconstruction system based on multi-modal data fusion. The system comprises a multi-modal data input unit, a template deformation reconstruction unit, a registration fusion unit, a multi-source data integration unit and an output unit. Through fusion processing of a CBCT image, an oral cavity vision measurement model and facial scanning data, a body deformation algorithm is adopted to couple biomechanical characteristics to realize craniojaw template deformation, and a non-rigid ICP algorithm is combined for dynamic regulation and control to realize facial template adaptation. A deep neural network is innovatively constructed to segment CBCT gingival data, the CBCT gingival data is fused with an oral cavity vision measurement model, and high-precision tooth reconstruction is realized by applying a differential geometry multi-scale curvature field segmentation and adversarial edge optimization technology. Through a composite registration strategy combining adaptive rigid registration and non-rigid registration, an occlusal plane constraint mechanism and an orbital curvature extreme point matching algorithm are innovatively introduced, finally, multi-source data high-precision registration fusion is realized, and a three-dimensional oral-jaw system model with anatomical structure integrity and clinical precision can be generated.

A method of the invention comprises obtaining training dental CT scans, identifying individual teeth and jaw bone in each of these CT scans, and training a deep neural network with training input data obtained from these CT scans and training target data. A further method of the invention comprises obtaining a patient dental CT scan, identifying individual teeth and jaw bone in this CT scan and using the trained deep learning network to determine a desired final position from input data obtained from this CT scan. The (training) input data represents all teeth and the entire alveolar process and identifies the individual teeth and the jaw bone. The determined desired final positions are used to determine a sequence of desired intermediate positions per tooth and the intermediate and final positions and attachment types are used to create three-dimensional representations of teeth and / or aligners.

A surgical fastener applier having a housing containing a compartment therein, an elongated member extending distally from the housing and first and second jaws. A firing mechanism is positioned within the housing movable to a second position to effect firing of fasteners. A power pack is removably loadable into the compartment, the power pack having one or both of a) a first motor and a first engagement member removably engageable with the firing mechanism when the power pack is loaded into the compartment to effect movement of the firing mechanism; and b) a second motor and a second engagement member removably engageable with an articulating mechanism in the housing of the surgical fastener applier to effect movement of an articulation mechanism to effect articulation. One or both of a firing position and an articulation position are tracked during the surgical procedure. Sensors are provided to detect select parameters and instrument functions.

A surgical instrument, such as a tissue sealing instrument, is provided with an end effector having first and second movable jaws that define a gap therebetween in the closed position for clamping, sealing and / or stapling tissue. The jaws are movable relative to each other in the closed position to reduce a thickness of least one portion of this gap. This configuration allows the jaws to be moved closer together to reduce the overall size of the instrument when, for example, the instrument is introduced and retracted through an opening in the patient, or maneuvered within a body cavity. The surgical instrument may also have multiple settings for use with different staple cartridges, while still maintaining a fixed dimension between the two jaws for clamping, stapling and / or sealing tissue, providing a more adaptable surgical instrument that allows the surgeon to use different staple cartridges without having to change surgical instruments.

The invention belongs to the technical field of hydrogel, and relates to piezoelectric / conductive integrated hydrogel for jaw defect repair, which is prepared from methylacryloyl protein, zwitterionic monomer and titanate piezoelectric particles through ultraviolet crosslinking under the action of a crosslinking agent and a photoinitiator, the hydrogel comprises, by mass, 1.0%-10% of methacrylated protein, 1.0%-10% of zwitterionic monomers, 1.0%-10% of titanate piezoelectric particles and 0.1%-5% of an initiator, and the volume fraction of an accelerant is 0.05%-1.0%. The hydrogel disclosed by the invention has excellent mechanical strength and certain flexibility, can realize piezoelectric and conductive functions of the hydrogel, can effectively promote proliferation, differentiation and mineralization of bone cells under the action of an electric field, accelerates bone tissue repair, and has a more remarkable bone regeneration effect compared with a non-electrical stimulation material in the prior art.

The invention discloses a personalized tooth modeling method and system based on digital oral cavity imaging, and relates to the technical field of digital modeling. The invention discloses a personalized tooth modeling system based on digital oral imaging. The personalized tooth modeling system comprises a data acquisition module, a model construction module, a model fusion module, a tooth gap labeling module, a tooth health prediction module and a nursing matching module. According to the method, the personalized tooth model is generated by synthesizing the tooth structure and activity range data of the user, and the deep cleaning scheme and the daily nursing scheme are accurately matched according to the tooth gap and tooth surface health condition, so that the nursing scheme of each user can be customized according to the unique oral cavity condition; by comprehensively acquiring the tooth and jaw structure, the tooth movement range and the health information of the user, the accuracy and comprehensiveness of the model are ensured, and sufficient data support is provided for subsequent cleaning and nursing schemes.

An end effector for gripping and spinning a pipe includes a head portion including a first connection interface for connecting the end effector to a robotic arm. In addition, the end effector includes a pair of jaws rotatably connected to the head portion between an open position and a gripping position. Further, the end effector includes a spinner for spinning a pipe held by the pair of jaws in the gripping position around a spinning axis generally corresponding to a longitudinal centre axis of the pipe. The first connection interface has a normal which is substantially parallel to the spinning axis. There is also disclosed a robot including an end effector as well a robot assembly and a drilling installation including such as robot.

The invention provides an oral implant operation registration method and system, and the method comprises the steps: obtaining first CBCT data and second CBCT data, a registration device is provided with a plurality of groove points, and the second CBCT data is provided with an image coordinate system; arranging an optical tracking array on the dental region, and determining a first transformation matrix between a binocular camera coordinate system and a dental jaw bone reference coordinate system through a binocular camera; determining a first pose matrix of the needle point of the drill needle in the planting mobile phone coordinate system; the tip of the optical probe and the binocular camera are utilized to perform sampling operation on each groove point on the registration device to obtain a plurality of registration points; determining a second transformation matrix according to the plurality of registration points and each groove point; and determining a second pose matrix according to the first transformation matrix, the second transformation matrix, the first pose matrix and a transformation matrix between the coordinate system of the binocular camera and the coordinate system of the implant mobile phone, and preparing a hole in the dental region through the tip of the drill point. By adopting the scheme, the planting precision of the implant can be improved.

The invention discloses an edentulous jaw dental implant positioning method combined with depth variation reasoning. The method comprises the following steps: S1, generating optimized medical image data; s2, generating a jaw bone three-dimensional reconstruction model of the edentulous jaw patient; s3, generating anatomical feature data; s4, generating a preliminary implant positioning scheme; s5, generating a local bone reconstruction simulation result; s6, performing dynamic interaction on a local bone reconstruction simulation result and the preliminary implant positioning scheme, optimizing the preliminary implant positioning scheme through a depth variation inference model, and generating an implant optimized positioning scheme including mechanical stability and biomechanical performance evaluation; and S7, based on the implant optimization positioning scheme, generating implant guide plate design data and surgical navigation data in combination with the jaw bone three-dimensional reconstruction model of the patient. According to the method, the final implant positioning point obtains a globally optimal solution in the aspects of long-term stability and biological adaptability.

The invention provides a cranio-maxillofacial hard tissue deletion repair method based on a general repair model, and relates to the technical field of jaw defect reconstruction, the method comprises the following steps: constructing a cranio-maxillofacial hard tissue general repair model by using a plug-and-play conditional attention mechanism and a query generator based on curvature perception; inputting the cranio-maxillofacial hard tissue point cloud data into a cranio-maxillofacial hard tissue general repair model, and training by using a weighted loss function to obtain a trained cranio-maxillofacial hard tissue general repair model; performing de-noising processing on the missing repair point cloud features to obtain de-noised missing repair point cloud features; and carrying out point cloud gridding modeling processing by using the denoised deletion repair point cloud features to obtain a cranio-maxillofacial hard tissue deletion repair result, and completing the deletion repair of the cranio-maxillofacial hard tissue. The problem that repair and reconstruction of hard tissues at the head part are difficult to solve uniformly is solved.

A facemask and accessories which overcomes 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 relates to the technical field of medical image processing, in particular to a method and system for identifying odontogenic jaw cyst and tumor based on deep learning, and the method comprises the steps: obtaining original jaw CBCT image data, carrying out the preprocessing, and generating a combined annotation data set containing lesion types, tooth root absorption form annotations and CT value annotations; constructing a multi-branch neural network model, and training the multi-branch neural network model by using the joint labeling data set to obtain an odontogenic jaw lesion recognition model; and obtaining jaw CBCT image data of a target patient, inputting the jaw CBCT image data into the odontogenic jaw lesion recognition model, and outputting lesion type classification results, tooth root absorption forms and bone destruction volumes. The diagnosis capability of minimal lesions can be improved, missed diagnosis is reduced, whole-process auxiliary diagnosis from qualitative diagnosis to quantitative analysis is realized, and the diagnosis speed is increased.

A robot hand is provided with a pair of fingers provided so as to freely approach and separate from each other in order to hold a workpiece therebetween, and a pair of jaw members provided on the pair of fingers, respectively, in order to hook another workpiece. The jaw members are provided so as to be changeable between a state of protruding from the contact surfaces of the fingers with the workpiece and a state of being pushed into the fingers.

A cutting device includes a jaw with a first jaw member and a second jaw member, a first handle attached to the first jaw member and a second handle rotatably connected to the second jaw member at a second pivot point, a gear including a first set of teeth and a second set of teeth at a first end of the second handle. The second handle is slidably connected to the second jaw member at the second pivot point to allow the second handle and the second set of teeth to move into a disengaged position where the second set of teeth are located at a distance from the first set of teeth. To ensure that the teeth of the gear engage correctly, a slide lock is in an enabling state allowing the second handle and the second set of teeth to slide in a slide direction from the disengaged position to the engaged position only when the first set of teeth and the second set of teeth are aligned into a mutually predetermined position.

The invention relates to an oral and maxillofacial implant repair path generation system based on a CBCT image, in particular to the field of computer aided design of surgical operations, and the scheme comprises the following steps: constructing a high-quality training data set through multi-source data aggregation and intelligent labeling enhancement; training by using the mixed model to generate a high-precision jaw segmentation model; the segmentation parameters are dynamically adjusted in combination with real-time feedback in preoperative planning, and a personalized optimization result is output; the model is continuously updated and the data strategy is optimized by means of a closed-loop feedback mechanism, so that the planning accuracy, the self-adaptability and the clinical efficiency of oral maxillofacial implant restoration are comprehensively improved, and the whole process from data to decision making is intelligentized.

A clipping system includes an adapter mounted on an insertion device and a clip including first and second jaws connected via hinges so that the first and second jaws are movable between an insertion configuration and an initial deployed configuration. A deployment member is configured to move the clip distally over and off of the adapter so that, as the clip leaves the adapter, the clip moves from the insertion configuration to the initial deployed configuration. An extending member is releasably coupled to the clip and movably connected to the adapter, and is configured to permit the withdrawal of the adapter away from the clip while the extending member remains coupled to the clip to place the system in a review configuration. The extending member is operable to retract the clip over the adapter, freeing the clip from tissue on which it had been clipped.

The invention discloses a local removable movable denture design method based on a large model, which comprises the following steps: S1, collecting diversified oral cavity scanning data, and constructing a standard model covering different tooth arrangements, occlusion relationships and jaw structures; s2, scanning oral cavity model data of a target object to generate a 3D digital model; s3, comparing the generated 3D digital model with a standard model, and identifying and marking tooth restoration elements; and S4, determining a design scheme of the locally removable removable denture according to the marked tooth restoration elements. The method provided by the invention solves the challenges faced by current grassroots physicians and medical students in denture design, and has wide application prospects and social benefits.

The invention relates to the technical field of information, and particularly provides a complete denture arrangement virtual simulation method and system, and the method comprises the steps: obtaining the medical record data of a user; the medical record data comprises edentulous jaw soft and hard tissue data, jaw bone data, alveolar ridge morphological parameters, jaw position relation data and facial feature data; determining an initial dental arch curve based on the medical record data; inputting the initial dental arch curve and preset aesthetic parameters into a preset deep learning model to obtain a plurality of initial tooth arrangement schemes; screening the plurality of initial tooth arrangement schemes according to tooth arrangement constraint conditions to obtain tooth arrangement schemes meeting constraints; the tooth position and angle of each tooth arrangement scheme meeting the constraint are adjusted until the preset occlusion balance condition is met, and the first tooth arrangement scheme is obtained, so that the tooth arrangement scheme efficiency of the complete dentures can be improved on the premise that the quality of the tooth arrangement scheme of the complete dentures is guaranteed.

A surgical end effector assembly is disclosed. The surgical end effector assembly comprises a shaft, an end effector comprising a first jaw and a second jaw movable relative to the first jaw, and an articulation joint attaching the end effector to the shaft, wherein the articulation joint defines an articulation axis about which said end effector is articulatable relative to the shaft. The articulation joint comprises a first rotary drive member rotatable about the articulation axis and a second rotary drive member rotatable about the articulation axis, wherein the first rotary drive member and the second rotary drive member are rotatable in the same direction to articulate the end effector about the articulation axis. The surgical end effector assembly further comprises a jaw drive output cooperatively driven by the first rotary drive member and the second rotary drive member configured to clamp and unclamp tissue with the second jaw.

The invention discloses a jaw cystic lesion recognition method, device and equipment, a medium and a product, and relates to the field of jaw cystic lesions. The method comprises the following steps: marking tooth and jaw regions in an oral cavity cone beam CT image, and selecting a region of interest to obtain an interested marked image; labeling cyst category labels generated by jaw cystic lesions in the interested labeling images, and forming a training set; constructing a deep learning model introducing an attention mechanism; the attention mechanism introduces relative positions of cysts and teeth as interested features; training a deep learning model by using the training set to obtain a jaw cystic lesion recognition model; and marking tooth and jaw regions in a to-be-identified oral cavity cone beam CT image of the patient with the jaw cystic lesion, inputting the marked image of interest after marking the tooth and jaw regions into the jaw cystic lesion identification model, and outputting the cyst category of the patient with the jaw cystic lesion. The accuracy and efficiency of jaw cystic lesion diagnosis can be improved.

The invention discloses a bite block for tracheal intubation, and belongs to the technical field of medical instruments. The overall shape of the bottom plate is of an oval structure, and a through groove is formed in the middle of the bottom plate. A bite block support capable of supporting the upper teeth and the lower teeth of the patient is inserted into the through groove; one side of the bottom plate is provided with a clamping groove for placing an air pipe insertion pipe; a clamping groove is formed in the bottom plate, a trachea cannula fixator capable of fixing the placed trachea cannula is arranged at the position of the clamping groove in the bottom plate, and the clamping groove in the bottom plate extends to the outer side area of the bottom plate, so that two protruding parts are formed on the side, provided with the clamping groove, of the bottom plate. The two top plates can be expanded and adjusted through cooperation of the adjusting pipe, the clamping ring, the guide groove and the guide rod, the supporting amplitude in the mouth of a patient can be adjusted, the problems encountered in real medical care can be solved, in the operation process, a series of operation adjustment of lifting of the top plates can be achieved only by repeatedly rotating the adjusting pipe, and the operation efficiency is improved. The operation is simple, and the tendon tissue around the jaw bone of the patient can be moved anytime and anywhere so that the patient can feel uncomfortable due to a fixed posture for a long time.

Surgical instruments and / or fastener apparatuses comprising an end effector with a pair of jaws pivoted at a proximal end thereof and movable between an open and closed position. At least one of the jaws may comprise a channel for receiving a cartridge containing a plurality of surgical fasteners. Also, an electrically powered actuator may be for deploying the surgical fasteners and may comprise a power source and a motor. An activation mechanism may be attached to the handle to move the pair of jaws from the open to the closed position and to activate the actuator. A lockout mechanism may be configured to permit current to flow from the power source to the motor when the pair of jaws is in the closed position and to prevent current from flowing to the power source to the motor when the pair of jaws is in the open position.

The invention provides a orthognathic digital virtual occlusion pairing method, which comprises the following steps: acquiring an oral cavity three-dimensional digital model of a patient, the oral cavity three-dimensional digital model comprising a jaw bone and a dentition; segmenting a jaw bone in the oral cavity three-dimensional digital model to form a segmented model; calibrating reference position information on the segmentation model, and determining an adjustment rule; and splicing the segmented jaw bones in the segmentation model until the adjustment rule is met.

Disclosed is a method for monitoring changes in jaw motion over time. A primary relative jaw motion data set and a secondary relative jaw motion data set are obtained using an intraoral scanner. The method further comprises a computer implemented method, where the computer implemented method comprises the steps of, receiving the primary relative jaw motion data set and the secondary relative jaw motion data set; obtaining a model class representing desired and / or regularising properties of articulation; obtaining a primary model parameters by fitting the primary relative jaw motion data set to the model class; obtaining a secondary model parameters by fitting the secondary relative jaw motion data set to the model class; determining monitoring information based on comparing the primary model parameters with the secondary model parameters, and displaying the monitoring information.

A surgical tool configured to receive rotary inputs from a robotic surgical system. The surgical tool comprises a distal end effector comprising jaws for clamping tissue therebetween, an intermediate shaft portion coupled to the distal end effector, and a proximal housing coupled to the intermediate shaft portion. The proximal housing comprises an arrangement of rotary drives comprising a first rotary drive. The first rotary drive comprises an input shaft configured to receive a rotary input from the robotic surgical system, a transition nut slidably positioned on the input shaft, and an output gear. The first rotary drive further comprises a high-speed gear configured to selectively drive the output gear, a high-torque gear configured to selectively drive the output gear, and a spring arrangement configured to bias the transition nut along the input shaft from a high-speed operating state to a high-torque operating state upon obtaining a threshold torque.

The invention provides an auxiliary tooth separation method and system for minimally invasive tooth extraction, and relates to the technical field of digital surgery in stomatology. According to the method, the oral anatomy three-dimensional electronic model is obtained by performing deep learning segmentation and three-dimensional reconstruction on the preoperative CBCT image, and the real-time spatial position and posture of the jaw bone are updated in combination with laser oral scanning of the preoperative anterior tooth area. On the basis, a three-dimensional simulation model is constructed, tooth division cutting path planning, interference judgment and dislocation space analysis are completed, precise tooth division cutting is implemented by a three-way mechanical arm along the planned path, and the safe and controllable automatic tooth extraction and tooth division process is completed in cooperation with water cooling and real-time track correction.

A fishing tool includes a main body and a cutting assembly coupled to the main body. The cutting assembly includes a top jaw, a bottom jaw rotatable relative to the top jaw, and a scissor assembly including a top blade and a bottom blade rotatable relative to the top blade. The top blade and the bottom blade are removably coupled to the top jaw and the bottom jaw.

Known jaw movement tracking systems generally allow for a limited tracking of the jaw movement. e.g. they are only able to track the jaw movement in two dimensions or track muscle activations without specifying direction of movements, and are thus unable to fully track the complex jaw movements. The reduced tracking ability of known devices reduces the ability to discriminate between different jaw movements based on the tracked movement. A need exists for a jaw movement tracking system that allows jaw movement tracking for discriminating between different jaw movements. The invention relates to a jaw movement tracking system. invention further relates to a method for use of the jaw movement tracking system.