48 results about "Jaw movement" patented technology

The invention belongs to the technical field of flexible sensors, and particularly discloses a flexible sensor of a multi-layer porous net structure and a preparation method of the flexible sensor, and the flexible sensor comprises a functional layer and two flexible packaging layers. The functional layer is arranged between the two flexible packaging layers, the functional layer comprises a plurality of porous sensing structures which are arranged in a laminated manner, and each porous sensing structure comprises a nanometer latticed supporting layer and a sensing layer which are arranged in a laminated manner; the surfaces, connected with the functional layer, of the two flexible packaging layers are each provided with a protrusion array. The sensor has a wide mechanical response range while high sensitivity of the sensor is maintained, is good in flexibility, ultrathin, small in size and light in weight, hardly affects mandibular movement, can accurately monitor occlusal force, hardly causes inconvenience to muscle joint movement of a human body, and is suitable for popularization and application. And the flexibility is maintained under various mechanical deformations such as distortion, stretching or compression, and the multi-axial force can be detected.

The invention provides a dental restoration generation method and device, a manufacturing system and a storage medium, and relates to the technical field of stomatology. The method for generating the dental restoration comprises the following steps: acquiring static data of upper and lower jaws and movement track data of the lower jaw of a patient; acquiring facial morphology data of the patient; generating a virtual patient model according to the upper and lower jaw static data, the lower jaw movement track data and the facial morphology data; obtaining a try-on model according to the dental restoration template model and the virtual patient model; and displaying the image of the try-on model.

Mandibular repositioning devices have a maxillary piece and a mandibular piece each of which is configured to cover a user's teeth. The maxillary piece has a right back teeth portion and / or a left back teeth portion and a driver flange protruding laterally outward from either or both thereof. Each driver flange has a driving side with a convex surface. The mandibular piece has a protrusive flange extending cranially therefrom and positioned with an engaging side thereof engaged against the driving side of the driver flange. The engaging side of the protrusive flange has a concave surface which mates with the convex surface of the driver flange when the mouth is closed and is in continuous contact thereagainst as a user moves their jaw downward, thereby providing gradual arcuate incremental forward mandibular movement as the concave surface of the protrusive flange smoothly glides against the convex surface of the driver flange.

The disclosed technology provides for setting up teeth, such as dentures and dental appliances, based on motion data. A method can include receiving, by a computing system, a digital representation of the patient's jaw movement, receiving a digital model of at least a portion of the patient's upper and lower teeth, receiving user input indicating selection of at least a first tooth in the digital model as moveable, at least a second tooth as fixed, and at least a third tooth as ignored, moving the at least portion of the upper teeth and the lower teeth along movement pathways indicated by the digital representation of jaw movement, and automatically adjusting a position of the selected first tooth based on detecting the position of the selected at least first tooth as colliding or interfering with one or more other teeth represented by the digital model along one of the movement pathways.

The compact log splitter comprises a main body, a tool coupling member carried by the main body, for operative coupling to a tool handling device, and first and second jaws carried by the main body, the jaws each being movable relative to the main body along a jaw movement direction, the jaws further being movable towards and away from each other between a closed position in which they are near or adjacent to each other and an opened position in which they are spaced-apart compared to the closed position, at least one of the jaws comprising a cutting tool for splitting logs that is in facing register with the other one of the jaws. A jaw actuation mechanism is carried by the main body and operatively connected to the first and second jaws, allowing the jaws to be moved between the opened and closed positions. The compact log splitter has substantially the same width when the jaws are in the opened position and in the closed position. When the first and second jaws are in the opened position, the jaw actuation mechanism is mostly located between parallel planes that are perpendicular to the jaw movement direction and respectively located at the positions of the first and second jaws.

The invention discloses a jaw movement and mandibular joint reaction force measuring method, and relates to the technical field of oral biomechanics and medical sensors, and the method comprises the following steps: configuring multiple sensors for a patient, carrying out data acquisition preparation, pasting an optical mark point at a key position of the face of the patient, and starting the multiple sensors for calibration. The method comprises the steps of acquiring bioelectrical signals and mechanical signals, capturing changes of the bioelectrical signals and the mechanical signals, obtaining jaw movement mechanical data, extracting kinematics, dynamics and bioelectrical signal features based on the jaw movement mechanical data, fusing the extracted features by using multi-modal data fusion to generate a comprehensive vector, training historical jaw movement mechanical data by using a convolutional neural network model, and obtaining a training result. According to the method, a multi-sensor data acquisition and convolutional neural network model combined measurement method is adopted, and multi-modal data deep fusion is realized. A multi-sensor data acquisition and convolutional neural network model combined measurement method is adopted.

The utility model provides a simple column type jaw movement jaw frame which comprises an upper jaw support used for being connected with an upper tooth jaw model, an upper supporting column is arranged on the upper jaw support, and the upper supporting column extends by a preset length in the vertical direction; the lower jaw support is used for being connected with a lower tooth jaw model, a lower supporting column is arranged on the lower jaw support, and the lower supporting column extends by a preset length in the vertical direction; the end, away from the upper jaw support, of the upper supporting column and the end, away from the lower jaw support, of the lower supporting column are provided with separable butt joint structures. The separable butt joint structure comprises an inclined convex face and an inclined concave face which are matched with each other, and the inclined convex face can slide along the inclined concave face. The problem that in the prior art, when an upper tooth jaw model and a lower tooth jaw model conduct jaw movement, an upper column type structure support and a lower column type structure support interfere with each other, and consequently use is inconvenient is solved.

The utility model relates to the technical field of mechanical arms, in particular to a clamping device for a mechanical arm, which comprises a bottom plate, a mounting frame, a clamping component and a driving component, the clamping component changes the motion mode of a clamping claw through the synergistic effect of a first rotating rod, a second rotating rod and a spring, and when the driving component works, the clamping claw is clamped by the clamping component. The first rotating rod and the second rotating rod drive the clamping claw to move, elastic force provided by the spring enables the clamping claw to better adapt to the shape of an object when making contact with the object, compared with a traditional clamping claw only doing arc motion, the clamping claw can be more tightly attached to the surface of the irregular or round object through the design, friction force between the clamping claw and the object is increased, and the clamping claw can be more stably clamped. The clamping device is simple in structure and convenient to use, the slipping phenomenon is effectively reduced, the clamping stability is improved, the springs are arranged, the clamping claws can adapt to the shape of an object, the clamping force can be changed by adjusting the elastic coefficient or the pre-tightening force of the springs, and the adaptability and reliability of the clamping device are further improved.

The invention relates to a crystal diffraction experiment manipulator clamping jaw drying device which is characterized in that the output end of a gas inlet pipe is hermetically connected with an inlet of a gas heater along the conveying direction of dry high-pressure gas, the output end of the gas heater is simultaneously connected with a thermometer and a gas conveying pipe, and a probe of the thermometer extends into an output gas flow channel; two ends of the gas delivery pipe are respectively hermetically butted with the output end of the gas heater and the gas inlet of the annular air knife; an airflow guide groove is formed in the inner wall of the annular air knife, so that high-temperature and high-pressure gas can form 360-degree omnibearing uniform airflow; the support fixes the annular air knife and enables an inner hole of the annular air knife to align with a manipulator clamping jaw movement track. According to the mechanical arm clamping jaw drying device for the crystal diffraction experiment, dry high-pressure gas is directly taken in and is compressed and accelerated by the air knife to generate airflow after being heated, frost on the clamping jaw can be rapidly removed and dried, the temperature, the strength and the type of the airflow can be flexibly controlled, and the drying efficiency is effectively improved.

The utility model discloses a sorting system which comprises a moving device and a grabbing device detachably connected with the moving device, and the moving device can drive the grabbing device to move. The grabbing device comprises a first grabbing device, the first grabbing device comprises a moving assembly and a first grabbing mechanism, the moving assembly is used for driving the first grabbing mechanism to move in the first direction, the first grabbing mechanism comprises a plurality of first clamping jaws, and the first clamping jaws are arranged in the second direction; the moving assembly is further used for driving at least one first clamping jaw to move in the second direction, and the second direction is perpendicular to the first direction. According to the sorting system, when the to-be-sorted objects of the sorting system are changed, or the sorting system sorts different to-be-sorted objects at the same time, the relative positions of all or part of the first clamping jaws are adjusted through the moving assembly, and then sorting can be completed under the condition that the first grabbing device is not replaced. And the replacement frequency of the clamp is reduced, and the sorting efficiency is effectively improved.

A head and neck system for a patient simulator, which head and neck system includes one or any combination of: a sweat and tears subsystem; a jaw movement subsystem; a neck movement subsystem; an eyes subsystem; a brow movement subsystem; a lip movement subsystem; an airway subsystem; and one or more simulated skin layers adapted to cover the head and neck system for the patient simulator.

The utility model relates to a feeding module of a film cutting device and the film cutting device, and the feeding module comprises a clamping seat which comprises a seat body and a chuck; the material disc is used for placing a film to be cut; the clamping jaw assembly comprises a clamping jaw movement mechanism and a clamping jaw part, the clamping jaw part is driven by the clamping jaw movement mechanism to move between the position where the material disc is located and the position where the clamping head is located, and the clamping jaw part is provided with a clamping groove which is open in the side portion and extends in the horizontal direction; the feeding assembly comprises a feeding movement mechanism and a feeding push rod, and the feeding push rod can be driven by the feeding movement mechanism to move in the direction parallel to the axis of the film, so that the end of the film placed in the clamping groove is pushed into the clamping opening of the chuck in the axial direction. The automatic film feeding device has the advantages that automatic design of film feeding action is achieved, film feeding efficiency is effectively improved, and labor intensity of operators is reduced.

The application discloses a kind of digital lower jaw accurate positioning and customized removable denture preparation integrated method, it is related to stomatology technical field. Including: initial diagnosis data collection;Digital modeling and jaw position adjustment;Design treatment jaw position guide plate;Try on jaw position guide plate, check lower jaw movement, confirm facial form beautiful, prepare silicon rubber final impression, record the actual occlusion relationship of patient;Based on occlusion relationship preparation-final denture, the obtained-final denture is carried out clinical evaluation.The application is for complex oral conditions, such as occlusion disorder, temporomandibular joint disorder patient, by obtaining personalized fitting removable denture, adjusting the relative position relationship of upper and lower jaw bones, relieving abnormal stress of joint, assisting the stability and recovery of temporomandibular joint, realizing the unity of stability and aesthetic effect of stomatognathic system after repair.

The present embodiments relate to systems and methods relating to an implant that enables the jaw to be held forward while sleeping that advances the lower jaw without the discomfort provided by other techniques. The implant can be configured to be positioned between the mastoid bone and the mandible bone of a user. The implant may not affect natural jaw movement that can include opening and closing of the jaw but also side-to-side movement.

The utility model relates to the technical field of medical instruments, in particular to a lower jaw supporting device for oral surgery, which comprises a front neck support, a lower jaw support with an arc-shaped structure is arranged above the front neck support, the lower jaw support is adjustably connected with the front neck support through an adjusting mechanism, and the left side and the right side of the lower jaw support are adjustably connected with the front neck support through supporting mechanisms. The adjusting mechanism comprises a fixing plate, the fixing plate is horizontally and fixedly arranged on the annular face of the front neck support, a through groove used for rotation of a guide sleeve is formed in the fixing plate, the guide sleeve is arranged in the through groove, an adjusting lead screw is inserted into the guide sleeve, and an adjusting knob is screwed to the position, located on the lower side of the guide sleeve, of the adjusting lead screw. The upper end of the adjusting lead screw is hinged to the lower jaw support through a hinge head. The lower jaw of a patient can be supported in an adjustable mode, the fatigue of the jaw of the patient is relieved, the situation that the oral cavity is injured due to the fact that the lower jaw is driven to move by unconscious movement is prevented, and a good operation view and operation convenience are provided for doctors.

The present disclosure relates to a device (100) for the treatment and / or prevention and / or testing of bruxism or craniomandibular dysfunction, sleep apnea and other parafunctional movements such as tongue thrusting, which is designed to be arranged between the upper and lower jaw of a user in a dental appliance or to form a dental appliance, the device comprising a biofeedback unit, in particular a mechanism as a simultaneous sensor and feedback transmitter for biofeedback or in particular a mechanism,which, upon reaching a predetermined threshold of jaw movement and / or the force resulting from a jaw movement, snaps from a first state to a second state with a switching behavior, generating feedback to the user via one or more of the human senses, and returns to the first state when the force from the jaw movement ceases, or a sensor offset towards the occlusal surfaces, or an arrangement in a section of a mandibular occlusal splint that spans or bridges the legs (bridging section). Further devices and methods for manufacturing are also disclosed.

The user terminal (4) comprises: an analysis unit (42) (a chewing interval determination module (42a) and a filtering / calculation module (42b)) for obtaining chewing information, which is time series information representing the jaw movement of a bite amount when the user eats; and an analysis unit (42) (an analysis module (42c)) for inputting the chewing information into an analysis model (M1) and obtaining the attributes of food that is estimated to be chewed by the user through the jaw movement of the bite amount output from the analysis model (M1). The analysis model (M1) is a learned model obtained by machine learning using training data, and the training data includes first information, which is time series information representing the jaw movement of a past bite amount obtained for the user, and second information representing the attributes of food chewed by the user through the jaw movement of the past bite amount.

The utility model relates to a capacity expansion device, which comprises a bottom plate, a storage module, a mobile module and an electric control module, the storage module comprises a left side plate, a middle side plate, a right side plate, a shelf, a bottom supporting plate, an outer rail connecting plate, a first drawer guide rail, a door plate, an inner rail connecting plate, a drag chain and a first sensor. The outer rail connecting plate and the bottom supporting plate are sequentially installed on the bottom plate, and the outer guide rail and the inner guide rail of the first drawer guide rail are installed on the outer rail connecting plate and the inner rail connecting plate respectively. The door plate, the left side plate, the middle side plate, the right side plate and the shelf are installed on the inner rail connecting plate, the storage module is divided into a plurality of storage bins, and the storage bins are provided with first sensors. The moving module comprises a clamping jaw moving mechanism, an X-axis translation mechanism, a Z-axis translation mechanism and a Y-axis translation mechanism; the clamping jaw movement mechanism is mounted on the X-axis translation mechanism; and the X-axis translation mechanism, the Z-axis translation mechanism and the Y-axis translation mechanism are sequentially mounted on the bottom plate, so that the problem that the glass slide of the glass slide scanning equipment is inconvenient to replace is solved.

Techniques and apparatuses are described for gating speech processing using active acoustic sensing. During active acoustic sensing, a hearable (102) transmits and receives at least one ultrasound signal, which propagates within a user's (106) ear canal (116). This ultrasound signal can be modulated by muscle movements associated with speech. Some muscle movements, such as jaw movement, can indicate that the user (106) is about to speak before audible speech is generated. With active acoustic sensing, the hearable (102) can predict whether the user (106) is about to speak and use this information to gate speech processing (114). Gating speech processing (114) can conserve power and provide opportunities for enhancing speech processing.

In one implementation, method includes receiving, by a computing system, a digital representation of the patient's jaw movement, receiving a digital model of at least a portion of the patient's upper and lower teeth, receiving user input indicating selection of at least a first tooth in the digital model as moveable, at least a second tooth as fixed, and at least a third tooth as ignored, moving the at least portion of the upper teeth and the lower teeth along movement pathways indicated by the digital representation of jaw movement, and automatically adjusting a position of the selected first tooth based on detecting the position of the selected at least first tooth as colliding or interfering with one or more other teeth represented by the digital model along one of the movement pathways.

The utility model is suitable for the technical field of battery cell manufacturing equipment, and discloses a battery cell rounding device and battery cell winding equipment. The battery cell rounding device comprises a clamping jaw assembly and a clamping jaw driving mechanism, the clamping jaw assembly comprises at least three clamping jaws, and the clamping jaw driving mechanism is used for driving at least one clamping jaw to move, so that all the clamping jaws define a circumferentially closed containing cavity. One side, facing the accommodating cavity, of each clamping jaw is an arc-shaped surface, the section of the accommodating cavity is circular, and the accommodating cavity is used for accommodating a battery cell. According to the battery cell rounding device disclosed by the utility model, the battery cell can be rounded from at least three different directions, so that one-step forming is realized, the rounding effect on the battery cell is improved, and the rounding efficiency is accelerated.

An intermaxillary occlusal molar appliance designed to control tongue and jaw movement for proper occlusion. The appliance includes a U-shaped molar impression tray to restrict backward tongue movement, and a bilateral rectangular molar bases to maintain vertical separation between molars and guide condylar heads. The appliance further includes a molar stops prevent upward and backward movement of the mandibular second molars, a molar-slip and a molar-slide wedges to allow controlled downward and forward movement of the molars and condyles. The appliance further includes structures to limit posterior mandibular displacement, promote muscle relaxation, and integrate all components for optimal alignment and function.

The invention relates to the technical field of oral medical instruments, in particular to a joint jaw position retainer and a manufacturing method thereof, and the method comprises the following steps: acquiring a lower jaw movement discrete point set during jaw opening and closing movement; the lower jaw movement discrete point set is fitted to generate a guide curve, the guide curve is segmented according to the tooth point rotation angle, a preset number of sub-curves are obtained, the arc length of each sub-curve is monotonically decreased in the jaw opening direction, and the tooth point rotation angle is an included angle formed by the starting point and the ending point of the guide curve with the condylar process center as the circle center; the sub-curves are correspondingly manufactured into guide rails, the guide rails are sequentially connected in series and connected in a sleeved mode according to the connection sequence of the sub-curves in the guide curves to form the guide telescopic assembly capable of stretching and retracting in the axial direction, the mandibular movement is restrained within the normal jaw opening and closing movement track range, and the necessary movement freedom degree is guaranteed while the disc-condyle relation is stabilized.

A set of stabilizer aligners includes an upper stabilizer aligner for an upper dental arch of a patient and a lower stabilizer aligner for a lower dental arch of the patient. The upper stabilizer aligner comprises a first set of cavities that conform to a dentition of the upper dental arch and a first set of stabilizing features. The lower stabilizer aligner comprises a second set of cavities that conform to a dentition of the lower dental arch and a second set of stabilizing features. Stabilizing features in the second set of stabilizing features are configured to contact opposing stabilizing features in the first set of stabilizing features. The upper stabilizer aligner and the lower stabilizer aligner prevent jaw movement of the patient while the upper stabilizer aligner is worn on the upper dental arch, the lower stabilizer aligner is worn on the lower dental arch, and the upper stabilizer aligner is engaged with the lower stabilizer aligner.

The invention discloses a digital jaw position recording and occlusal relationship collecting device and method, and relates to the technical field of oral medicine. Comprising the following steps: acquiring upper and lower jaw tissue surface data of a to-be-detected person, generating an oral cavity model of the to-be-detected person, performing three-dimensional data design based on the oral cavity model to obtain a tray model, importing the tray model into 3D printing software to obtain a personalized occlusion tray, wearing the tray by the to-be-detected person, and obtaining a static jaw position relationship by utilizing a three-dimensional scanner. The method comprises the following steps: acquiring opening and closing, lateral and front-back movement track data by using a lower jaw movement analysis system to form acquisition data, preprocessing the acquisition data, and inputting the preprocessed data into digital restoration / orthodontic design software to carry out subsequent digital design and analysis of a restoration / orthodontic appliance. According to the invention, high-precision jaw position recording and occlusal relationship acquisition are realized, data can be seamlessly jointed with a digital design process, the prosthesis adaptation rate and the treatment efficiency are improved, and the method has remarkable clinical application value and popularization prospect.

The invention provides an oral cavity motion tracking method and device, equipment and a storage medium. The method comprises the following steps: acquiring a three-dimensional oral cavity model and at least one group of two-dimensional images; generating a first probability graph corresponding to the two-dimensional image; based on the visual angle of the two-dimensional image, generating a second probability graph corresponding to the three-dimensional oral cavity model under the visual angle; aiming at each group of two-dimensional images, according to a first probability graph corresponding to each two-dimensional image in the group of two-dimensional images, a second probability graph corresponding to each two-dimensional image in the group of two-dimensional images, of the three-dimensional oral cavity model, and a current pose of the three-dimensional oral cavity model relative to each two-dimensional image in the group of two-dimensional images, calculating the three-dimensional oral cavity model according to the first probability graph corresponding to each two-dimensional image in the group of two-dimensional images; determining tooth registration poses of the group of two-dimensional images in the shooting time period; and outputting an oral cavity motion tracking result according to the tooth registration poses corresponding to the shooting time periods. In this way, tooth jaw motion tracking can be achieved without depending on auxiliary equipment, and the reliability of collected data is improved.

The invention provides a virtual-real bidirectional output lower jaw positioning device based on linear length measurement, which comprises a bearing plane, a lower jaw moving plane, a linear length measurer combined structure, a length adjusting and locking structure and a bracket structure, the virtual-real conversion module is used for achieving software jaw position adjustment and entity conversion, and the real-virtual conversion module is used for achieving the process of entity jaw position adjustment and software conversion. Through a brand-new measurement principle and structural design, a linear length measurer combined structure is adopted, three-dimensional free movement of a mandibular movement plane and stable hovering at a specified spatial position are realized, the device structure and the operation process are simplified, the intuition and the accuracy of coordinate reading are improved, and the working efficiency is improved. And the accuracy and convenience of virtual-real bidirectional output are further optimized.

Systems, methods, and devices for detecting mandibular motion via in-ear monitoring of ear canal deformation are disclosed. An earpiece houses multiple infrared proximity sensors oriented to measure volumetric changes in the cartilaginous portion of the outer ear canal induced by jaw movement. A coupled processor acquires, filters, and fuses proximity signals to identify activity onset and termination, and classifies movement events such as chewing, coughing, and yawning using signal-processing and machine-learning algorithms. The system optionally communicates wirelessly to a voice transducer to enable hands-free voice initiation and control. The system provides discreet, reproducible, and user-specific operations suitable for implementing a hands-free human-machine interface.

A jaw movement simulation structure disclosed by the present invention includes: a first frame; a second frame hinged to the first frame; a first driving device for driving the second frame to swing on the first frame; a third frame slidably disposed on the second frame; a second driving device for driving the third frame to slide on the second frame; a lower jaw hinged to the third frame; and a third driving device for driving the lower jaw to swing on the third frame. The present invention is provided with the first driving device, the second driving device and the third driving device, which can drive the second frame to swing on the first frame, the third frame to slide on the second frame, and the lower jaw to swing on the third frame, realizing the automatic control of the movement of the lower jaw, and can improve the convenience of the movement of the lower jaw of the present invention and the improvement of the movement simulation effect.

Disclosed is a method and an apparatus for tracking a motion trajectory of jaw bone, a device and a medium. The method includes: a first jaw bone three-dimensional model of a user is acquired; the motion trajectory of the preset identification point is acquired, and the identification point is disposed at jaw bone of the user; and the motion trajectory of the first jaw bone three-dimensional model is determined according to the motion trajectory of the identification point, for tracking the motion trajectory of jaw bone of the user. Based on the above method, the present disclosure realizes tracking on the jaw bone motion of the user under the premise that the identification point is disposed at jaw bone of the user, so that the use difficulty is reduced, the device is easy to mount, meanwhile, the jaw bone motion is tracked only through the identification point, so interference caused on jaw bone motion by a corresponding tracking apparatus by using a traditional jaw bone motion tracking method is avoided, and influence on the motion trajectory of the jaw bone is reduced.