49 results about "Maxillary sinus" patented technology

Disclosed herein is a “condensing screw for an implant procedure.” A “condensing screw for an implant procedure” of the present invention is provided with: a screw main body which is inserted into an implant planting hole formed by an pilot drilling process, enlarges the implant planting hole to a size large enough to insert an implant fixture, and forms osseodensification regions on the side surfaces and the inside of the implant planting hole; and a shank which extends upward from the screw main body, is coupled to a driving unit, and transmits the torque of the driving unit to the screw main body. The condensing screw can enlarge the implant planting hole and perform the osseodensification process simultaneously, and can be used for maxillary sinus augmentation.

The invention discloses a CBCT (Cone Beam Computed Tomography) image distance determination method and device for maxillary sinus and maxillary posterior teeth, a medium and a product, and relates to the field of image processing, the method comprises the following steps: acquiring CBCT images of maxillary sinus and maxillary posterior teeth; according to the CBCT images of the maxillary sinus and the maxillary posterior teeth, performing three-dimensional segmentation of the maxillary sinus and the maxillary posterior teeth by adopting a structure segmentation model; the structure segmentation model is constructed based on a deep learning network; according to a three-dimensional segmentation result, generating a surface mesh model based on a marching cube algorithm; determining point cloud data based on a point cloud generation algorithm according to the surface mesh model; according to the point cloud data, the nearest distance between the maxillary sinus and the maxillary posterior teeth and the corresponding nearest apical point of the maxillary posterior teeth are determined; and determining the position relationship between the maxillary sinus and the maxillary posterior teeth according to the nearest distance, and classifying the position relationship. The distance between the maxillary sinus and the maxillary posterior tooth can be efficiently and accurately measured, and the position relation can be judged.

The application discloses a kind of three-dimensional CBCT skull image fine granularity segmentation method and system.The present application includes the following steps: first, construct first training dataset;Then, in combination with first training dataset, after training secondary segmentation neural network model, obtain trained secondary segmentation neural network model;Then, using trained secondary segmentation neural network model to the three-dimensional CBCT skull image to be processed is segmented, and the segmentation result of each structure of skull is obtained;Finally, using the improved region growing method is carried out the segmentation of the bone cortex and bone marrow of upper and lower jaw bones, and the bone cortex and bone marrow segmentation result corresponding to upper and lower jaw bones is obtained, so as to complete the fine granularity segmentation of three-dimensional CBCT skull image.The method proposed in the present application can separate the fine granularity region of oral and maxillofacial region, including complete skull, upper and lower jaw bones, teeth, bone cortex, bone marrow, nerve canal, maxillary sinus, incisor canal and other structures.

The maxillary sinus floor lifting tool comprises a handle and a stripper, the stripper comprises a connecting body and a stripping head, the connecting body is detachably connected with the handle, the stripping head is arranged at the end, away from the handle, of the connecting body, a first positive pressure air channel is formed in the connecting body, and a second positive pressure air channel is formed in the stripping head. A second positive pressure air channel communicated with the first positive pressure air channel is arranged on the side, deviating from the connecting body, of the stripping head, a pump body is arranged in the handle, the pump body is provided with an air pumping opening, the air pumping opening is communicated with the first positive pressure air channel, and a control switch for controlling the pump body to work is arranged on the handle. According to the maxillary sinus floor lifting tool, partial stripped mucous membrane is far away from the maxillary sinus bone wall by giving air pressure, then maxillary sinus mucous membrane stripping is carried out, and the phenomenon that the maxillary sinus membrane is punctured in an operation can be effectively prevented.

The invention provides an artificial intelligence-based preoperative evaluation system for maxillary posterior tooth region implantation, which comprises the following steps of: constructing an oral cavity CBCT (cone beam computed tomography) image library, and further constructing a maxillary sinus basic model, an oral cavity maxillary posterior tooth region implantation decision design model and an oral cavity maxillary posterior tooth region windowing bone grafting decision design model; constructing a maxillary sinus downstream task model according to the maxillary sinus basic model; inputting the to-be-detected oral cavity CBCT image data into the maxillary sinus downstream task model, and calling the oral cavity maxillary posterior tooth region implantation decision design model to generate a first decision or calling the oral cavity maxillary posterior tooth region windowing bone grafting decision design model to generate a second decision according to the output qualitative and quantitative characteristics, so as to carry out preoperative evaluation. According to the method, the different characteristics in the oral cavity CBCT image are intelligently identified in a whole process, and the optimal oral cavity maxillary posterior tooth area implantation decision is generated to carry out oral cavity maxillary posterior tooth area implantation preoperative evaluation, so that the reliability of the oral cavity maxillary posterior tooth area implantation preoperative evaluation is improved.

The present application provides a multifunctional antroscope, comprising: a main pipe body, wherein the main pipe body comprises a main pipe body part and an operation end at the top of the main pipe body. The main pipe body part is configured for entering a surgical site through a bone hole prepared during a dental implant surgery or through a fenestrated side wall of the maxillary sinus for operation and observation. The diameter of the main pipe body part is less than 6 mm. Channels in the main pipe body part include: a data cable channel, an operation channel, an irrigation channel, an air blowing channel, and a negative pressure channel. The negative pressure channel can be integrated with the operation channel into a negative-pressure operation channel. The above configuration integrates a water flushing function, an air blowing function, a negative pressure suction function, and an operation function into the main pipe body part, enabling safe operation on the operation site under video guidance, and ensuring an effective work space in each channel via channel optimization and integration.

The invention proposes a maxillary sinus boundary extraction method based on a convolutional neural network, and relates to the technical field of maxillary sinus image processing, and the method comprises the steps: constructing a convolutional neural network, and training the convolutional neural network through employing a marked maxillary sinus image; utilizing the trained convolutional neural network to predict the tissue region boundary position of the actually input maxillary sinus image, mapping to the actual position in the three-dimensional space, and constructing a three-dimensional tissue block boundary model; constructing a classification model, and outputting a preliminary block boundary curved surface of the three-dimensional organization block boundary model by using the classification model; and in the block enclosed by the obtained block boundary curved surface, the fine boundary surface segmentation of the maxillary sinus tissue is realized by determining the key voxel.

An iterative weakly supervised maxillary sinus segmentation method for bounding box annotation includes: generating superpixels that closely fit the edges of oral CBCT images using a superpixel algorithm, extracting superpixel features using a convolutional neural network, and constructing a superpixel graph based on the adjacency of the superpixels; to improve the performance of bounding box weakly supervised segmentation, in addition to using a superpixel-level CRF model to generate initial pseudo-labels for training an improved graph convolutional network for superpixel semantic classification, the prediction results of the improved graph convolutional neural network are periodically input into the superpixel-level CRF model to update and refine the pseudo-labels for iterative learning and training; applying the model obtained by weakly supervised iterative training to oral CBCT images can produce excellent maxillary sinus segmentation results. The present invention also includes an iterative weakly supervised maxillary sinus segmentation system for bounding box annotation. The present invention solves the problem of time-consuming and labor-intensive manual labeling of medical images.

The invention discloses a preparation method of a mixed support type multi-angle visual self-adaptive orthodontic implant anchorage guide plate. The preparation method comprises the following steps: S1, data acquisition; s2, data fitting is carried out; s3, designing an orthodontic planting nail; s4, designing a mixed support type multi-angle visual self-adaptive orthodontic implant guide plate: obtaining a dental crown-tooth root-mucosa model, designing a tooth-mucosa-occlusion triple mixed support type multi-angle visual self-adaptive implant guide plate, and further generating a mixed support type multi-angle visual self-adaptive orthodontic implant guide plate STL (Standard Template Library) file; s5, 3D printing is carried out; and S6, finished product preparation: removing the supporting rod from the printed guide plate, grinding and polishing, and sterilizing to finish the preparation. The anti-rotation displacement force of the guide plate is improved, and extra instrument fixation is not needed in the operation; the visual track and the head end opening expose the drill bit and the nail point in the whole process, guide plate dislocation is facilitated, a doctor can avoid tooth roots, maxillary sinus and neural tubes under direct vision, and the damage rate of the tooth roots is reduced.

The present invention relates to an implant structure having a cover screw for initial fixation and a fixture with a long neck portion capable of securing long-term osseointegration of an implant even after functional loading is applied in cases where bone quality is poor or bone volume is low or insufficient, extensive bone grafting is required, or bone grafting with maxillary sinus lift surgery is performed. The present invention comprises: a fixture (100) implanted in the jawbone to serve as a tooth root; a cover screw (400) inserted into and fixed to the fixture (100) to secure a fixation force of the fixture (100); an abutment (200) which has a lower portion inserted into the fixture (100) from which the cover screw (400) has been separated and removed and which has an upper portion to which a crown (10) is coupled; a fixation screw (300) which fixes the abutment (200) to the fixture (100); and a screw cap (500) coupled to the abutment (200) to cover the fixation screw (300).

This invention discloses a surgical guide for simultaneous implantation of maxillary sinus fluid extraction and internal lifting, belonging to the field of oral surgery technology. It includes a fixation device and a guide plate. The fixation device is fixed to the patient's dentition. A guide plate is located on one side of the fixation device, and an extension rod is located on the inner side of the fixation device, extending towards the missing molar. The guide plate is fixed to the extension rod and has an implant positioning hole at the missing dentition. A fenestration guide opening is located on the outer side of the patient's dentition. The fenestration guide opening guides the extraction of maxillary sinus fluid. Through this invention, the fixation device and the guide plate are connected and fixed. The guide plate has an implant positioning hole on the missing dentition and a fenestration guide opening pointing towards the patient's maxillary sinus. By setting the fenestration guide opening, the scope and depth of the fenestration can be clearly defined, significantly reducing the possibility of surgical errors and complications. Through the implant positioning hole on the guide plate, the internal lifting procedure is completed simultaneously, achieving precise implant placement.

A maxillofacial device includes a substructure with a shape that is custom made to a patient's maxillofacial area; a framework coupled to the substructure, the framework and substructure being made of a single continuous material or a combination of materials, the framework having a plurality of grid elements; and one or more plate fixations coupled to the substructure. The framework has a shape that is custom made to fit the patient's maxillary sinus area. The framework is configured to be surrounded by a bone graft material, wherein the substructure and framework provide rigidity and stiffness for the bone graft material.

A maxillofacial device includes a substructure with a shape that is custom made to a patient's maxillofacial area; a framework coupled to the substructure, the framework and substructure being made of a single continuous material or a combination of materials, the framework having a plurality of grid elements; and one or more plate fixations coupled to the substructure. The framework has a shape that is custom made to fit the patient's maxillary sinus area. The framework is configured to be surrounded by a bone graft material, wherein the substructure and framework provide rigidity and stiffness for the bone graft material.

A method and apparatus for designing a lateral approach surgical guide are disclosed. Embodiments provide a method and apparatus for designing a lateral approach surgical guide plate in which, if a maxillary sinus lifting surgery needs to be performed using a lateral approach method, the maxillary sinus is segmented from dental imaging data, a bone window is formed based on the segmented maxillary sinus, and the maxillary sinus lifting surgery is performed based on the bone window. The shape of the lateral approach surgical guide is then formed as a function of the thickness of the remaining bone in the bone window formation area and the stop of the cutting tool. Therefore, the guide plate for the lateral approach method can be quickly and accurately generated.

The invention discloses a maxillary sinus radical post-operation packing device which comprises a balloon, a catheter, a functionally graded material composite layer and a drainage tube. The balloon is constructed to be a triangular cone body matched with a maxillary sinus cavity, and inflation and fractional controllable pressure reduction are achieved through the catheter and the first control valve. The functionally graded material composite layer covers the outer surface of the balloon and comprises, from inside to outside, an inner guide layer provided with a directional fiber structure to guide orderly regeneration of mucous membrane cells; the middle slow-release layer is made of a degradable porous material which swells slowly when encountering liquid and is loaded with antibiotics; and the outer contact layer is made of an absorbable material capable of rapidly expanding when meeting liquid and is loaded with hemostatic and analgesic to form sequential function delivery. The drainage tube is integrated in the catheter, an opening of the drainage tube is located on the cone top and the edge of the balloon to form a three-dimensional drainage network, and a second control valve is arranged to achieve postoperative minimally invasive drainage and flushing.

Devices for therapeutic nasal neuromodulation and associated systems and methods are disclosed herein. A system for therapeutic neuromodulation in a nasal region configured in accordance with embodiments of the present technology can include, for example, a shaft and a therapeutic element at a distal portion of the shaft. The shaft can locate the distal portion intraluminally at a target site inferior to a patient's sphenopalatine foramen. The therapeutic element can include an energy delivery element configured to therapeutically modulate postganglionic parasympathetic nerves at microforamina of a palatine bone of the human patient for the treatment of rhinitis or other indications. In other embodiments, the therapeutic element can be configured to therapeutically modulate nerves that innervate the frontal, ethmoidal, sphenoidal, and maxillary sinuses for the treatment of chronic sinusitis.

The utility model provides an otolaryngological maxillary sinus probe for an optical navigation system, which comprises a maxillary sinus probe body, the maxillary sinus probe body comprises a handle and a maxillary sinus probe, the tip of the maxillary sinus probe body is provided with a probe ball head, and the handle is provided with a fixing column; the positioning piece comprises a coordinate body, a reflective ball base and a reflective ball, the reflective ball base is mounted on the coordinate body, and the reflective ball is fixed on the reflective ball base; the buckle is used for connecting the positioning piece and the maxillary sinus probe body and comprises a positioning seat, a locking sliding block and a positioning bead, and the locking sliding block is matched with the positioning bead to fix the positioning seat and the maxillary sinus probe body together. The maxillary sinus probe can enable an optical navigation system to track within a tracking range of a space locator.

The utility model discloses an implanting system for maxillary sinus outside-floor lifting operation synchronous implantation. The implanting system comprises an implant, a retention plate, a retention nail and a connecting abutment, the implant is connected with the retention plate through the connecting abutment, and both the implant and the retention plate are detachably connected with the connecting abutment; a retention hole is formed in the retention plate, and the retention nail is inserted into the retention hole to nail the retention plate on the alveolar bone of the maxillary sinus bottom. And blood nourishing holes are formed in the retention plate. The connecting base table comprises an inserting column part and a stud part; an insertion hole is formed in the implant, and the insertion column part is correspondingly inserted into the insertion hole of the implant, so that the implant is connected with the connecting abutment in a pluggable manner; a screw hole is formed in the retention plate, and the diameter of the screw hole is larger than that of the implant. When the implant is implanted, the implant is connected with the inserting column part of the connecting base table in an inserting and pulling mode, the inserting column part penetrates through the screw hole in the retention plate, and the stud part is screwed into the screw hole in the retention plate, so that the retention plate is in threaded connection with the connecting base table. When the height of the residual alveolar bone is too small, the initial stability of the implant can still be ensured.

Devices for therapeutic nasal neuromodulation and associated systems and methods are disclosed herein. A system for therapeutic neuromodulation in a nasal region configured in accordance with embodiments of the present technology can include, for example, a shaft and a therapeutic element at a distal portion of the shaft. The shaft can locate the distal portion intraluminally at a target site inferior to a patient's sphenopalatine foramen. The therapeutic element can include an energy delivery element configured to therapeutically modulate postganglionic parasympathetic nerves at microforamina of a palatine bone of the human patient for the treatment of rhinitis or other indications. In other embodiments, the therapeutic element can be configured to therapeutically modulate nerves that innervate the frontal, ethmoidal, sphenoidal, and maxillary sinuses for the treatment of chronic sinusitis.

The invention relates to a dental short implant, and belongs to the technical field of medical instruments. The implant comprises a main body, the lower part of the main body is a fixing part, the upper part of the main body is a connecting part, the upper side of the fixing part is provided with a composite thread consisting of a sawtooth-shaped counterfort thread and a sawtooth-shaped reverse counterfort thread, a pressure surface is formed between the sawtooth-shaped counterfort thread and the sawtooth-shaped reverse counterfort thread, the lower side of the fixing part is a V-shaped thread, and the bottom of the fixing part is a circular truncated cone; and the fixing part and the connecting part are integrally formed and manufactured. The invention aims to be applied to cases of bone mass insufficiency in maxillary sinus areas or near mandibular nerve tube parts, prevent a central screw from being broken and loosened, and overcome the problem of inflammation caused by a micro gap between an abutment and an implant.

The utility model discloses a lifting tool in a maxillary sinus. The lifting tool comprises an elastic soft rod, a connecting block, a first folding arm, a second folding arm and a penetrating groove. According to the lifting tool in the maxillary sinus, the top end of a grab handle part is connected with a turning part, the top end of the turning part is connected with a stripping part, the stripping part, the turning part and the grab handle part are jointly provided with a guide groove, the end, corresponding to the guide groove, in the grab handle part is provided with a movable cavity, and the inner side of the movable cavity is slidably connected with a movable column matched with the movable cavity; an elastic soft rod matched with the guide groove is arranged in the guide groove, a connecting block is fixedly connected to the other end of the elastic soft rod, a first folding arm is hinged to the connecting block, a second folding arm is hinged to the end of the first folding arm, the end of the second folding arm is hinged to the inner side of the top of the stripping part, and a penetrating groove allowing the first folding arm and the second folding arm to stretch out is formed in the side wall of the stripping part; the first folding arm and the second folding arm are folded, so that the first folding arm and the second folding arm extend out of the through groove and extend, and the stripping range of the mucosa is further expanded.

The utility model discloses an improved external lifting guide plate, which belongs to the technical field of dental medical instruments and comprises a fixing device and a guide plate, the fixing device can be fixed on a dentition of a patient, the guide plate is arranged on one side of the fixing device and can assist in stripping a maxillary sinus membrane, and an external lifting window frame is upwards arranged at the top of one side of a molar of the fixing device. An assembling and disassembling groove is formed in the middle of the outward lifting window frame, and the guide plate is fixed to the top of the assembling and disassembling groove and can penetrate through the assembling and disassembling groove to extend towards the inner side. According to the utility model, the outward lifting window frame is arranged on the fixing device, the assembling and disassembling groove is formed in the outward lifting window frame, and the guide plate can be mounted at the top of the assembling and disassembling groove. By means of matched connection between the guide plate and the outward-lifting windowing frame, the range and angle of windowing can be defined, it is guaranteed that an operation can be accurately operated, and errors are avoided in the operation process.

The utility model provides an implant for a maxillary sinus area in a posterior maxillary area, which relates to the field of oral implantation and comprises an implant body, an implant abutment, a retaining screw and a sealing component. The penetrating channel sequentially comprises a connecting section, a fastening section and a sealing section from top to bottom, the connecting section, the fastening section and the sealing section are communicated with one another, the upper side of the fastening section is a first smooth section, the lower side of the fastening section is a first threaded section, and the sealing section sequentially comprises a second smooth section, a second threaded section and a conical section from top to bottom; the bottom of the implant abutment is matched with the connecting area, a through screw hole is formed in the middle of the implant abutment, the retention screw is arranged in the screw hole, the lower end of the retention screw penetrates through the screw hole and then is in threaded connection with the first threaded section, and the sealing assembly is arranged in the sealing section. The implant can solve the problem that flushing treatment is inconvenient after maxillary sinus infection, so that the tooth implantation efficiency and effect are improved, and the discomfort of a patient is reduced.

The application discloses an operating device for removing foreign matters in the maxillary sinus, and relates to the technical field of medical devices, which comprises an outer tube and a functional tube assembly arranged in the inner part of the outer tube. The outer tube is a medical-grade hard tube body, which comprises a straight tube section, a curved guide section and a tapered positioning section connected in sequence. The functional tube assembly comprises a first functional tube, a second functional tube and a third functional tube arranged in a triangular shape, which respectively form an observation channel, a flushing channel and an operating channel with the functions of negative pressure suction and instrument entering, and the three functional tube distal outlets are arranged in front and back staggered positions along the axial direction. The guiding and positioning structure adapting to the natural anatomical path of the maxillary sinus and the coordinated layout of the multifunctional channels improve the instrument entering and positioning stability, reduce the interference caused by multi-instrument operation, realize the integrated operation of the visual positioning, flushing, suction and removal of the foreign matters in the maxillary sinus, and improve the precision, safety and operation efficiency of the foreign matter removal.

The present embodiment relates generally to methods of performing surgical technique maxillary sinus floor augmentation with a lateral approach using a pre-portioned and ready pre-packaged bone graft composition in gelatin bags and method of producing gelatin bags. In addition the present inventions can be widely used in other medical fields such as dentistry, orthopedic surgery, spine surgery, plastic and reconstruction surgery, sport medicine, trauma surgery, phinoplasty surgery and veterinary.

The invention provides a maxillary sinus root extraction device and a maxillary sinus root extraction method. The maxillary sinus root extraction device comprises a positive pressure flushing unit, a negative pressure suction unit and a filtering assembly. The positive pressure flushing unit comprises a flushing fluid tank, a flushing pipeline and a positive pressure pump, and a nasal cavity connector is arranged at the tail end of the flushing pipeline; the negative pressure suction recovery unit comprises a waste water tank, a suction pipeline and a negative pressure pump, and an oral cavity suction head is arranged at the initial end of the suction pipeline; and the filtering assembly is used for intercepting and recovering the broken roots in the sucked liquid flow. The positive-pressure flushing inlet is formed in the nasal cavity, the negative-pressure suction outlet is formed in the oral cavity, a natural physiological channel (sinus opening) and a pathological channel (tooth extraction socket) of the maxillary sinus are ingeniously utilized, and a complete flushing drainage path which penetrates through the maxillary sinus cavity and conforms to the physiological flow direction is created; the mutual interference between the flushing flow and the suction flow in the traditional'same-diameter and same-area 'design is avoided, so that the flushing water flow can enter the maxillary sinus cavity with higher efficiency and push the tooth root to move.

The application relates to a transcrestal maxillary sinus bottom lifting auxiliary bone grafting device and a working method thereof, and belongs to the technical field of medical devices. The device comprises a flaring device and a fixer. The flaring device comprises a hollow cylinder, a conical block and a cylindrical filling block which are sequentially arranged from top to bottom, the flaring device is funnel-shaped as a whole, and the hollow cylinder is symmetrically provided with fixing holes. The fixer comprises a connecting column, a nut, a sliding block, a positioning protrusion, two first connecting rods and two second connecting rods. The connecting column is provided with a thread at one end, the thread is provided with the nut, the other end of the connecting column is hingedly connected with the two second connecting rods, the sliding block is slidably sleeved on the connecting column, the two first connecting rods are respectively hingedly connected to the two second connecting rods, and the two second connecting rods are respectively provided with the positioning protrusions at the ends. The application can fully expose the bone defect position, ensure the filling position accuracy of the bone powder filling device, conveniently observe the bone powder filling amount, and improve the bone powder filling effect.

Devices for therapeutic nasal neuromodulation and associated systems and methods are disclosed herein. A system for therapeutic neuromodulation in a nasal region configured in accordance with embodiments of the present technology can include, for example, a shaft and a therapeutic element at a distal portion of the shaft. The shaft can locate the distal portion intraluminally at a target site inferior to a patient's sphenopalatine foramen. The therapeutic element can include an energy delivery element configured to therapeutically modulate postganglionic parasympathetic nerves at microforamina of a palatine bone of the human patient for the treatment of rhinitis or other indications. In other embodiments, the therapeutic element can be configured to therapeutically modulate nerves that innervate the frontal, ethmoidal, sphenoidal, and maxillary sinuses for the treatment of chronic sinusitis.

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 invention belongs to the technical field related to medical image processing, and particularly relates to a maxillary sinus bone increment evaluation method based on CBCT image analysis, which comprises the following steps of preoperative maxillary sinus three-dimensional segmentation, double-stage maxillary bone segmentation processing, double-stage maxillary bone space registration, bone increment volume calculation, implant space positioning analysis and bone increment morphological parameter measurement. According to the method provided by the invention, the image segmentation precision, the measurement precision and the registration efficiency can be improved.