377 results about "Occlusion" patented technology

The invention discloses a high-precision and automatic dental crown generation method. The method comprises seven steps of oral cavity three-dimensional data acquisition, full-mouth tooth semantic segmentation, upper and lower jaw point cloud precise registration, abutment and associated gingiva precise segmentation and trimming, abutment surrounding environment multi-tissue segmentation, neck-edge line secondary precise detection, and dental crown generation and multi-dimensional refinement. The method comprises the steps of oral cavity three-dimensional data acquisition, full-mouth tooth semantic segmentation, upper and lower jaw point cloud precise registration, abutment and associated gingiva precise segmentation and trimming, abutment surrounding environment multi-tissue segmentation, neck-edge line secondary precise detection and dental crown generation. Through combination of deep learning and a point cloud algorithm, high-precision segmentation of teeth and gingiva and precise reduction of an occlusion relationship are realized, an oral anatomical feature library and a clinical repair standard are fused, and through multi-dimensional fine adjustment optimization, a dental crown 3D model which is high in fitting degree, harmonious in occlusion and capable of meeting clinical requirements is generated. The method is full-process automatic, greatly improves efficiency, reduces operation threshold, reduces material waste and diagnosis and treatment cost, remarkably improves repair success rate, and is suitable for various oral repair scenes.

The invention relates to the technical field of three-dimensional analysis, in particular to an oral cavity three-dimensional motion analysis system based on dynamic occlusion scanning. The system comprises an oral cavity occlusion feature extraction module, a dynamic occlusion reconstruction module, an occlusion track smoothing module and an oral cavity motion abnormity identification module, and a multi-view structured light scanner can be used for carrying out image scanning on the oral cavity in the dynamic occlusion process so as to obtain a multi-frame original occlusion image sequence; occlusal feature extraction and three-dimensional occlusal reconstruction are carried out on the multiple frames of original occlusal image sequences to construct corresponding three-dimensional occlusal model sequences; a dynamic occlusion trajectory prediction model is constructed based on the three-dimensional occlusion model sequence, oral cavity three-dimensional motion analysis and occlusion trajectory smoothing filtering processing are carried out, and a smooth three-dimensional occlusion motion trajectory is generated; and performing oral cavity motion abnormity identification according to the smooth three-dimensional occlusion motion track so as to generate an oral cavity occlusion three-dimensional motion abnormity identification result. According to the invention, accurate capture and analysis of three-dimensional motion of the oral cavity can be realized.

The invention relates to an occlusion guide plate designing and manufacturing method based on dentition mechanical analysis, which comprises the following steps: S1, acquiring oral cavity image data of a patient, and constructing a three-dimensional digital model comprising a dental crown, a tooth root and an alveolar bone structure; s2, calculating an overall mechanical reference point of a tooth root structure of an anterior maxillary tooth area; s3, acquiring an incisal edge midpoint of each incisal tooth and a cusp point of each canine tooth in the maxillary anterior tooth area, solving a geometric center, and connecting the geometric center with an overall mechanical reference point to form a dentition direction vector; s4, calculating the displacement relationship between the target dentition arrangement and the initial dentition arrangement in the lip-tongue direction; s5, calculating an included angle between the occlusal force direction of the maxillary anterior tooth area and the dentition direction vector; s6, determining key morphological parameters of the occlusion guide plate according to the calculation result of the included angle in S5; and S7, manufacturing the occlusion guide plate. Compared with the prior art, the method has the advantages of precise mechanical adaptation, quantitative treatment prediction, personalized design and the like.

The present invention pertains to the technical field of materials. Disclosed are a polymer composite hydrogel and a preparation method therefor, and a tooth desensitization material. The polymer composite hydrogel consists of a GelMA hydrogel and BP nanosheets composited inside the GelMA hydrogel, wherein the GelMA hydrogel is prepared by crosslinking gelatin methacryloyl via double bonds under the action of a photoinitiator. Under the photothermal effect, the polymer composite hydrogel of the present invention can enhance the resistance of dentin to external stimuli and promote the formation of stable and effective occlusion of dentinal tubules. Moreover, the occlusion effect on the dentinal tubules exhibits acid resistance, corrosion resistance, and stability, preventing the possibility of short-term reopening of the occluded dentinal tubules. This is of great significance for the treatment of occluded dentin hypersensitivity (DH).

The invention provides a computer-implemented method for determining the occlusion relationship of three-dimensional digital models of maxillary and mandibular dentitions based on tooth photos, which comprises the following steps: acquiring a first photo of teeth of a patient in an occlusion state, the first photo comprising a plurality of maxillary teeth and a plurality of mandibular teeth; obtaining a first three-dimensional digital model and a second three-dimensional digital model respectively representing the upper jaw dentition and the lower jaw dentition of the patient; rendering the first three-dimensional digital model and the second three-dimensional digital model to obtain a first rendering graph; predicting an optical flow between the first photo and the first rendering graph by using a trained optical flow neural network based on the first photo and the first rendering graph; and based on the optical flow, calculating a first spatial position transformation relationship which can transform the relative position relationship between the first and second three-dimensional digital models to a state closer to the bite state shown by the first photograph, with a solution to solve the PnP problem, and calculating a second spatial position transformation relationship which can transform the relative position relationship between the first and second three-dimensional digital models to a state closer to the bite state shown by the first photograph.

The invention relates to a method and a system for improving oral cavity digital data fitting accuracy by using a noninvasive 3D modeling marking module. The method comprises the following steps: designing and obtaining a standardized marking module with a plurality of digital marking points on the surface through 3D modeling; non-invasively and reversibly adhering to the surface of an abutment which is used as an auxiliary reference system; the method comprises the following steps: acquiring oral cavity digital model data with a marking module after different intervention processing or in different data acquisition modes, detecting point-line-surface features of the marking module and preferentially matching, and default that corresponding data are overlapped and established in the same three-dimensional coordinate reference system to finish optimal fitting alignment; therefore, the digital data fitting accuracy of the oral cavity is improved; the marking module-assisted fitting method can be used for 1) comparing the accuracy of different digital data acquisition modes; 2) multi-unit temporary tooth data transfer errors are reduced; and (3) the acquisition error of the missing occlusion data of multiple teeth is reduced, so that the precise design of the target prosthesis is assisted.

The utility model discloses a dental component which comprises a first matching structure arranged corresponding to the tongue side or the cutting end of anterior teeth of an upper jaw and a second matching structure arranged corresponding to the lip side or the cutting end of anterior teeth of a lower jaw, and the first matching structure and the second matching structure are configured as follows: when the upper jaw and the lower jaw are occluded, the first matching structure is matched with the second matching structure; the first matching structure and the second matching structure abut against each other to generate force or moment, and the force or moment at least comprises lip tilting force corresponding to the anterior teeth of the upper jaw or lip tilting moment corresponding to the anterior teeth of the upper jaw. In the correction process, at least the maxillary anterior teeth generate lip inclination, firstly, the relative positions of the maxillary anterior teeth and the alveolar bone can be gradually adjusted, so that the maxillary anterior teeth are suitable for being pressed down; on the second aspect, the gap between the upper jaw anterior teeth and the lower jaw anterior teeth can be enlarged so that the first matching structure and the second matching structure can be conveniently installed and designed; and thirdly, the anterior teeth of the upper jaw have certain inclination, so that the anterior teeth of the lower jaw can interact with the anterior teeth of the lower jaw conveniently, and the anterior teeth can be depressed, adducted and the like conveniently.

The invention provides an unmarked mandibular movement dynamic acquisition method, and relates to the field of dynamic reconstruction of a jaw position relationship. According to the method, feature extraction and posture calculation are performed completely based on the video image and the tooth three-dimensional model, intervention of a mark point or a mechanical device is not needed, the testee can complete collection in a natural state, an artificial interference source is eliminated, and the physiological measurement accuracy and the user experience are remarkably improved. A multi-view-angle high-speed camera system is combined with a dental crown point topological structure for modeling, multi-view-angle space reconstruction and time sequence compensation are utilized, stable tracking and high-precision reconstruction are still kept under the conditions of shielding and motion blur, and the risk of collection failure is effectively avoided. According to the method, based on dentition overall modeling and posture calculation, a complete mandibular movement track curve can be output, complex movements such as chewing, deviation, occlusion and mandibular lateral rotation can be accurately expressed, and high-quality original data is provided for clinical occlusion evaluation generation.

The invention relates to a non-invasive life data monitoring method and system based on an intelligent tooth socket, and belongs to the technical field of health monitoring. The method comprises the following steps: acquiring non-invasive life data, obtaining non-invasive life quantification data according to the non-invasive life data, and constructing a multi-modal non-invasive life monitoring set according to the non-invasive life quantification data; according to the multi-modal non-invasive life monitoring set, obtaining a tooth pathological model through chewing and occlusion dynamic simulation; non-invasive life real-time monitoring data is obtained, a tooth pathology label is obtained through the tooth pathology model according to the non-invasive life real-time monitoring data, an orthodontic personalized correction scheme and a health intervention strategy are generated according to the tooth pathology label, and the tooth health condition is accurately recognized. Therefore, the chewing habit of the user is improved, and occurrence and development of oral diseases are prevented.

An intravascular device that includes a delivery sheath, a shaped braid comprising a distal braid layer and a proximal braid layer, and an inner member comprising a proximal end and a distal end, the inner member disposed between the proximal braid layer and the distal braid layer of the shaped braid. The intravascular device further includes a first configuration, the shaped braid and the inner member having a first length, and a second configuration, the shaped braid and the inner member having a second length wherein the first length is greater than the second length.

To provide an intraoral light irradiating device which not only accurately irradiates light onto the gingival margin and free gingiva over the entire dentition of a user, but also gives an excellent wearing feeling when the user wears a mouthpiece deep in the oral cavity. [Solution] In an intraoral phototherapy device having a mouthpiece 1 and a light source 2 disposed thereon and equipped with a plurality of light emitters 20, the mouthpiece has an occlusion tray 3 and front and rear flanges 4, 5 that face the outer and inner surfaces of the wearer's upper and lower gums, respectively, and the upper and lower edges of the front flange are provided with recesses 4c in which the wearer's upper and lower frenulum are respectively positioned, and the upper and lower edges of the rear flange are provided with recesses 5c in which the wearer's palatine raphe and lingual frenulum are respectively positioned.

The utility model discloses an oral biomechanics capsule type detector, which comprises a main body made of an elastic material and provided with a tooth stress area for receiving tooth occlusion and a tongue and lip stress area for receiving tongue pressing and / or lip furling pressure; the capsule type detection structure comprises a plurality of cavities which are formed in the main body and are communicated with one another and a pressure sensor used for measuring the pressure of an integral cavity formed by the plurality of cavities, and the tooth stress area and the tongue and lip stress area are each provided with at least one capsule type detection structure. The measuring device can be used for measuring tooth occlusal force, lip smoothing force and tongue force in the upper jaw jacking direction, has the characteristics of simple structure, safety, sanitation, high comfort level, reliability in measurement, convenience in operation, reusability after cleaning and the like, is beneficial to clinical evaluation and diagnosis, and provides an effective auxiliary means for oral rehabilitation and orthodontic treatment.

The utility model discloses a unicondylar replacement rongeur, which relates to the technical field of medical instruments and comprises a jaw, a front arm, a rear arm, a front shaft, a middle shaft, a handle, a limiting clamp, a plate spring and a rear shaft. The jaw is arranged at the front ends of the front arms, the two front arms are rotationally connected through the front shaft, and the occlusion opening distance of the jaw is large and can reach 9 mm to the maximum. The occlusion opening is enlarged, so that larger and thicker osteophyte can be accommodated, occluded and removed; hyperplastic osteophyte at each part of the quasi-circular patella and osteophyte at the edge of the femoral condyle can be bitten and removed through the design of the circular bend of 100 degrees, and convenience and high efficiency are achieved; the front mouthpiece which is long enough can cover patella length of any countryside, so that osteophyte can be treated conveniently; and the distance between the two shafts is increased, so that a farther and more hidden osteophyte can be processed.

Ablation, crossing, and cutting systems, devices and associated methods can relate to a crossing device that includes, in combination a spring-enhanced handle and body configured to controllably extend and retract an interventional tool within a microcatheter for addressing an occlusion within a vessel of a patient to provide improved access for supplemental treatment and reperfusion.

The utility model discloses a saliva aspirator which comprises a saliva aspirating head, an occlusion part is arranged on the saliva aspirating head, an anti-skid structure is formed on the occlusion part, a cavity is formed in the saliva aspirating head, a plurality of aspirating holes are formed in the saliva aspirating head, and the aspirating holes are communicated with the cavity; one end of the connecting tube is connected with the saliva suction head, and a circulation channel is formed in the connecting tube and communicated with the cavity. According to the saliva aspirator disclosed by the utility model, the friction force between the tooth occlusal surface and the saliva aspirating head can be increased by arranging the anti-slip structure on the occlusal part, so that the saliva aspirating head can be effectively prevented from being separated during use, the reliability of the saliva aspirator during use can be improved, and the aspirating continuity of saliva can be ensured; meanwhile, in the attachment bonding process, the teeth tightly bite the saliva suction head, and the saliva suction head can play a role similar to chewing, so that the invisible orthodontic appliance template is tightly attached to the teeth, and the attachment bonding accuracy and firmness can be improved.

The disclosure relates to a nasal cannula comprising a port configured for delivery of a medicament into a flow of a fluid being delivered by the nasal cannula to a user and / or configured for interfacing with a medicament delivery device or an instrument. The disclosure also relates to a nasal cannula comprising an asymmetric profile to reduce an amount of occlusion of one nare of a user to provide access for an instrument to the nare with the nasal cannula in use.

The present invention discloses an orthodontic anchorage pin implantation navigation system and method based on mixed reality technology, which relates to the field of orthodontic surgical navigation technology, including collecting patient orthodontic anchorage pin implantation surgical data, and performing spatial registration based on a deep learning feature matching algorithm to generate a patient-specific three-dimensional anatomical model; generating anchorage pin implantation point coordinates and an angle planning scheme based on the patient-specific three-dimensional anatomical model, and synchronously setting a safety boundary threshold to adjust the implantation point and angle parameters; loading the patient-specific three-dimensional anatomical model and the final planned implantation point coordinates into customized MR glasses, and using an occlusion elimination algorithm to superimpose virtual navigation markers on a real surgical field to generate a three-dimensional postoperative simulation report. The present invention achieves high precision and high reliability of the implantation anatomical basis, can effectively improve the controllability and safety of surgical operations, and improve the accuracy, efficiency and treatment effect of orthodontic anchorage pin implantation.

The invention relates to the technical field of medical instruments, in particular to a multi-channel oropharyngeal ventilation device for the anesthesiology department, the multi-channel oropharyngeal ventilation device for the anesthesiology department comprises a ventilation pipe, a functional pipe and a mounting plate, two through holes are symmetrically formed in the side face of the mounting plate, and the ventilation pipe and the functional pipe are arranged in parallel and movably connected to the inner walls of the through holes of the mounting plate respectively; the device further comprises a guide plate fixedly connected to the middle of the mounting plate, occlusion blocks are symmetrically connected to the two sides of the guide plate in a sliding mode, the occlusion blocks are used for being occluded and limited between the upper teeth and the lower teeth of a patient, and the ends, facing ventilation, of the occlusion blocks are arc-shaped end faces. Through the vent pipe and the functional pipe which are arranged in parallel, ventilation support and clinical drainage, dosing and other operations in an anesthesia state are achieved respectively, repeated intubation is avoided, the locking assembly is matched to automatically lock the vent pipe and the functional pipe at the target depth after the device is in place, a catheter is effectively prevented from sliding or dislocation in an operation, and the operation efficiency is improved. And the accuracy and the safety of medical operation are ensured.

An occlusion clip comprising: (a) a first elongated occlusion arm; (b) a second elongated occlusion arm; (c) a first elongated biasing arm coupled to a distal portion of the first elongated occlusion arm; (d) a second elongated biasing arm coupled to a distal portion of the second elongated biasing arm is coupled to a proximal portion of the second elongated biasing arm, where the first elongated occlusion arm extends parallel to the first elongated bias arm along a majority of its length, and where the second elongated occlusion arm extends parallel to the second elongated bias arm along a majority of its length.

The utility model discloses a pediatric nursing sputum aspiration auxiliary device, including inlet portion, flaring portion and silicone rubber layer, the inside of the inlet portion is through and is square tube structure, the inside of the flaring portion is through and is round tube structure, the inlet portion and the flaring portion are mutually connected and through, the silicone rubber layer is sleeved on the inlet portion. The tongue of a child is pressed through the inlet part according with the ergonomic design, displacement is not prone to occurring, the inlet part is sleeved with the silicon rubber layer, a child patient can conduct oral cavity operation such as chewing and biting, and therefore anxiety and impatience caused by the fact that the oral cavity of the child patient cannot move are avoided; therefore, the emotion of the child patient can be well relieved, the comfort of the child patient is effectively improved, a medical worker can insert a sputum suction pipe into the oral cavity to suck sputum after the sputum suction pipe sequentially penetrates through the flaring part and the inlet part, and reliability is high.

This invention relates to an occlusion device comprising a fixing part and a sealing part. The fixing part includes a mesh-woven structure and a plurality of radially extending wings. The occlusion device is provided with at least one limiting member, which connects to at least two positions of the fixing part. Compared with the conventional fixing part design with a cylindrical outer edge (i.e., a circular cross-section), the fixing part of the occlusion device provided by this invention has a plurality of wings that can adaptively engage with the grooves and protrusions of the implantation area, facilitating the anchoring member to abut or penetrate the surface of the implantation area in the corresponding area, thereby obtaining better anchoring capability.

The utility model discloses an artificial nose capable of preventing facial indentation, which comprises an artificial nose body, an air delivery pipe and an intubation tube, the air delivery pipe and the intubation tube are communicated with the input end and the output end of the artificial nose body, and a telescopic tube used for adjusting length and a steering tube used for adjusting orientation are additionally arranged between the intubation tube and the output end of the artificial nose body. The position of the artificial nose body can be adjusted through the telescopic pipe, so that the artificial nose body can avoid the face of a patient and can move to a bed surface on the outer side of the face of the patient, and due to the hardness of the material of the artificial nose body, the situation that a pipeline is blocked due to bending and the air conveying function is affected is avoided; the device can be matched with the telescopic pipe to move to an area which does not hinder operation of a doctor, and operation hindrance cannot be caused.

The invention provides an orthodontic appliance system, which is used for staged mixed orthodontic teeth and comprises a tooth position correction tooth socket unit, a tooth space closing tooth socket unit and a dentition and occlusion shaping tooth socket unit. The tooth position correction tooth socket unit is used for being arranged on an initial dentition in a sleeving mode to obtain a corrected dentition. The tooth space closed tooth socket unit is used for being fixed on the correction dentition to obtain a tooth space closed dentition. The dentition and occlusion shaping tooth socket unit is used for being arranged on the tooth space closed dentition in a sleeving mode to obtain a shaping dentition. Therefore, the orthodontic appliance system can improve tooth arrangement and tooth spacing closure of a user.

The utility model relates to the technical field of oral occlusion positioners, and discloses an occlusion positioner which comprises an upper jaw positioning assembly, the upper jaw positioning assembly comprises an upper jaw positioning piece, a lower jaw positioning assembly is arranged on one side of the upper jaw positioning piece, and the lower jaw positioning assembly comprises a lower jaw positioning piece. An adjusting assembly is arranged on the end face of the side, close to the lower jaw positioning piece, of the upper jaw positioning piece and comprises a mold closing piece arranged on the end face of the side, close to the lower jaw positioning piece, of the upper jaw positioning piece in an attached mode, a positioning assembly is connected between the adjusting assembly and the lower jaw positioning assembly, and the positioning assembly comprises a central positioning screw. The occlusion positioner well solves the problems of muscle de-programming, bad induction of tooth tip inclined planes, induction of maxillofacial deflection, insufficient vertical distance between the jaws and the like, and can find out the fixed position of the jaw position in the positive axis even if the occlusion of a patient is deflected and the positions of the upper jaw and the lower jaw are deflected; during occlusal model taking, the occlusal positioner can better assist doctors in positioning and facilitate recording of model taking data.

The present application relates to the technical field of oral cavity medical equipment, in particular to an oral cavity implant bridge and a using method thereof, the installation assembly comprises an antiskid plate, a connecting plate and an extension plate, the upper surface of the cleaning plate is provided with the extension plate, the extension plate is arc-shaped, the upper surface of the arc-shaped extension plate is fixedly provided with the connecting plate, the connecting plate is inclined, and the inclination angle of the connecting plate is thirty to forty-five degrees; beneficial effects: when the whole bridge is installed on the upper surface of the corresponding dental bed of the patient, after installation is completed, the patient can bite from the inside of the oral cavity, judge whether the tooth model is suitable, if not, communicate with the doctor in time, adjust the tooth model, then the doctor installs the false tooth according to the tooth model, through the effect of the antiskid plate, it is ensured that the patient will not slide in the process of occlusion, and it is ensured that the patient will not hurt the human tissue in the oral cavity.

The utility model belongs to the technical field of false tooth appliances, and particularly relates to an occlusion center measuring scale which comprises a base, a connecting plate and a measuring needle, the connecting plate is connected to the base in a sliding mode so that the connecting plate can be adjusted back and forth in a reciprocating mode and adjusted up and down in a reciprocating mode, and positions of the connecting plate are locked through a first locking piece and a second locking piece respectively. The measuring needle is connected to the connecting plate in a sliding mode so that the measuring needle can be adjusted up and down in a reciprocating mode, and the position of the measuring needle can be locked through a third locking piece, the meshing center measuring ruler is simple in structure and convenient to use, the relative position of the measuring needle can be adjusted according to different individuals, the position can be adjusted, and the measuring accuracy is improved. The tooth position can be accurately indicated, and the precision is improved.

The invention discloses an automatic tooth arrangement mechanism which comprises a rack, a cam mechanism, a swing mechanism, a tooth clamping mechanism, a punching mechanism and a wedge-shaped extrusion mechanism, Y wires are continuously conveyed into the tooth clamping mechanism at equal intervals and stretch out by a zipper tooth height, and the cam mechanism drives the tooth clamping mechanism to move backwards; a cutter in the punching mechanism cuts off a Y wire to form a zipper tooth blank, the zipper tooth blank falls into the tooth clamping mechanism and is adsorbed by negative pressure to be temporarily fixed, in the process, the cam mechanism drives the swing mechanism to drive the punching mechanism to punch a protrusion on the head of the zipper tooth blank, one face of the head is a cavity, the other face of the head is a protrusion, and an occlusion point of zipper teeth is formed; the cam mechanism drives the tooth clamping mechanism to move forwards and interact with the wedge-shaped extrusion mechanism, when the two symmetrically-arranged forming mechanisms are subjected to mold closing, formed zipper teeth can be pressed on a cloth belt and subjected to secondary reinforcement, the actions are repeated, automatic continuous cutting, forming, pressing and secondary reinforcement of the zipper teeth are achieved, and the working efficiency and reliability are greatly improved.

This invention relates to the field of medical devices, and particularly to a novel tracheostomy occlusion device, comprising an operating table, a fixation plate, an adjustment mechanism, and an execution mechanism. This invention addresses the following problems encountered in the practical use of tracheostomy auxiliary retraction devices: prolonged holding of the retractor by the surgical assistant can cause soreness and lead to shaking of the retractor, which in turn can cause neck movement, affecting the normal progress of the surgery and potentially causing further trauma to the patient's trachea. Furthermore, it cannot effectively manage blood flowing from the neck, which may lead to blood entering the trachea and causing respiratory discomfort, even threatening the patient's life; the portion of the tracheostomy cannula inside the trachea obstructs the airway, affecting the patient's ability to cough up sputum and leading to inaccurate assessments of the patient's coughing ability; and it can easily cause blind sinus tracts to form at the tracheostomy site.

The systems and methods are configured for vascular and / or neurointerventional procedures. The systems and methods allow safe and rapid access, including percutaneous access, to the carotid arteries, as well as cerebral or intracranial arteries, for the introduction of interventional devices, such as to treat disease conditions. The methods and devices may include vascular access and retrograde systems.