25 results about "Maxillary sinus" patented technology

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 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.

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 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.

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 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.

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 discloses a continuous flushing system for fungal nasosinusitis, and belongs to the technical field of medical auxiliary instruments, the continuous flushing system comprises a peristaltic pump, a pump head is arranged below the front surface of the peristaltic pump, a flushing assembly is arranged on one side of the pump head, and the flushing assembly comprises a flushing pipeline arranged in the pump head; a flushing head assembly is arranged at one end of the flushing pipeline and comprises a first bent pipe section, a second bent pipe section and a third bent pipe section, the first bent pipe section is fixedly installed at one end of the flushing pipeline, the second bent pipe section is arranged on the inner wall of the first bent pipe section, and the third bent pipe section is arranged on the inner wall of the second bent pipe section. The multiple bent pipe sections are connected in a sleeved mode and can stretch out and draw back, all walls of the maxillary sinus can be flushed by means of the flushing heads at different angles, and continuous or pulse type water flow can form vortexes in the maxillary sinus to roll away fungi high in sticky adhesive force without damaging the paranasal sinus mucosa.

The utility model discloses a device for synchronously guiding implant implantation by lifting and positioning outside the maxillary sinus, which relates to the technical field of medical supplies and comprises a lifting guide plate outside the maxillary sinus, an implantation guide plate and a retention clamping plate, and the lifting guide plate outside the maxillary sinus is integrally connected with the retention clamping plate and the implantation guide plate; a reserved window is formed in the maxillary sinus outer lifting guide plate and is used for surgical positioning; a guide hole is formed in the implantation guide plate, the guide hole is used for guiding an implant to be implanted, and a water conveying hole is formed in the guide hole and used for cooling the prepared hole; the retention clamping plate wraps the maxillary teeth on the two sides of the tooth missing area, so that the whole device is fixed, a positioning window is formed in the position, attached to the tooth tip, of the retention clamping plate, and whether the retention clamping plate is completely clamped in place or not is checked through the positioning window. The device can be used for external lifting of the maxillary sinus and can also guide implantation of the implant at the same time, the surgical operation is simple and convenient, the difficulty is low, and the time of a doctor in the surgical process is shortened.

The invention discloses a model related to a maxillary sinus microscopic apical surgery. The model comprises a non-detachable foundation base and a detachable surgery module, the non-detachable foundation base is provided with an embedding cavity, and the detachable operation module is installed in the embedding cavity of the non-detachable foundation base through a magnetic or sliding rail device; the detachable operation module at least comprises a maxillary sinus simulation unit and a tooth root fixing and supporting unit, the maxillary sinus simulation unit is provided with a maxillary sinus cavity used for storing liquid packaged by a silica gel film, the tooth root fixing and supporting unit is clamped at the lower end of the maxillary sinus simulation unit structure, and the surface of the detachable operation module is covered with simulated gingiva; the detachable operation modules are provided with tooth root containing cavities communicated with the maxillary sinus cavities, the number of the detachable operation modules is multiple, the detachable operation modules can be installed in the embedding cavity in an interchangeable mode, and three distances are set between the maxillary sinus cavities and the tooth root containing cavities. The system can be used for diversified training of trainees, and the training accuracy is improved.

The utility model discloses a zygomatic implant and an oral implant comprising the zygomatic implant, which comprise an implant head, a lengthening component arranged at one end of a connecting part, a first straight line section arranged at one end of the lengthening component, a radian section fixedly arranged at one end of the first straight line section, a second hexagonal driving groove arranged in the middle of one end of the connecting part, and a second hexagonal driving groove arranged in the middle of the other end of the connecting part. A second connecting screw groove is formed in the middle of the inner wall of the second hexagonal driving groove, and a second annular screw groove is formed in the side of one end of the connecting part. The connecting part connected through the hexagonal column is connected with the lengthening assembly, the first linear section is connected with the first hexagonal butt joint block and the circular butt joint ring, and the size of the first inner hexagonal bolt is matched with the inner diameter of the first connecting screw groove and the inner diameter of the second connecting screw groove, so that the whole implant can be adjusted by personnel; further, the implant is more fit with the front outer side wall of the maxillary sinus, the problems of erosion, perforation and the like of mucous membranes outside the implant and soft tissues under the mucous membranes are reduced, and the occurrence of postoperative reactions is reduced.

The application discloses a FBG micro force sensor and belongs to the technical field of force sensors. The FBG micro force sensor comprises a sensor body, a first single FBG optical fiber and a second single FBG optical fiber. A pressure beam area and a shear beam area are arranged on the sensor body, and a plurality of independent single FBG optical fibers are fixedly arranged on the outer wall of the sensor body and correspond to the pressure beam area and the shear beam area. The single FBG partition compression structure length is utilized, the sensor can realize three-dimensional force sensing, the rigid section length of the sensor can be effectively shortened, the overall length of the sensor is shortened, the flexible endoscope tip integrated with the sensor can maintain a bending capacity of more than 90 degrees, and through special notch design, the axial sensitivity is ensured, the maximum bending deformation is limited, and overloading is prevented. The technical problem that end force sensing, instrument function integrity, high bending freedom and anti-overload reliability are difficult to be compatible in maxillary sinus surgery is solved.

The utility model discloses a training model for tooth extraction surface scratch operation, a training model for tooth extraction surface scratch operation, including the hinged seat of the rotation of certain angle, detachably install a pair of model base of simulating alveolar bone on the front end of hinged seat up and down symmetry, be equipped with tooth extraction nest in the position of corresponding human tooth on model base, be equipped with gum model of simulating gum on the outer package of model base, be equipped with the installation groove of corresponding communication tooth extraction nest bottom end on the outside surface of model base of corresponding human maxillary first molar, detachably install maxillary sinus bottom mucous membrane model spare in installation groove, and be equipped with granulation model spare in the bottom bonding of tooth extraction nest. The utility model is favorable to the direct view simulation demonstration periodontal damage situation, is favorable to the student and promptly discovers and corrects scratch operation, can improve the training effect of scratch operation.

The utility model provides a drill point guiding device for a zygomatic implant surgery, which comprises a sliding rod, one end of the sliding rod is fixedly connected with a first guiding rod, and the first guiding rod is provided with a first guiding hole; a second guide rod and a positioning rod are slidably connected to the sliding rod, a second guide hole is formed in the second guide rod, and the first guide hole, the second guide hole and the tail end of the positioning rod are collinear; the first guide rod extends into the oral cavity and is used for marking the drilling position of the drill point; the second guide rod enters the maxillary sinus through the window and is used for guiding the drill point in cooperation with the first guide rod; the positioning rod is located on the face of the patient and used for marking the drilling position of the drill point. According to the utility model, the first guide rod and the second guide rod are used for guiding the drill point drilled into the maxillary sinus, and the drilling position of the drill point is indicated through the positioning rod, so that a drill bit can be accurately and directly punched to the cheekbone through the maxillary sinus in a blind visual field, the success rate of a zygomatic implant operation is improved, and the operation risk is reduced.

An apparatus for providing a maxillary sinus image according to one embodiment includes a first artificial neural network model configured to distinguish a partial coronal plane region-of-interest from a coronal plane image of a head, a second artificial neural network model configured to, relative to an axial plane image of the head, extract a two-dimensional maxillary sinus image in an axial plane region-of-interest that corresponds to a position of the coronal plane region-of-interest, and an image processor configured to generate a three-dimensional maxillary sinus image using the two-dimensional maxillary sinus image.

This invention discloses a dental AI-assisted operating system, belonging to the field of dental assisted operation technology. It includes a three-dimensional visual perception module, a data transmission and interaction module, an AI data processing and fusion center, an intelligent display module, and a central control and early warning module. The AI ​​data processing and fusion center includes a safety boundary early warning unit, a surgical instrument tracking and loss early warning unit, a bleeding monitoring unit, and a surgical step guidance and verification unit. Through the safety boundary early warning unit, this invention fuses static preoperative CBCT data with dynamic real-time three-dimensional vision, achieving dynamic, high-precision, real-time distance monitoring and early warning of key anatomical structures such as the inferior alveolar nerve canal and maxillary sinus. This system can issue an alarm before surgical instruments are about to touch dangerous areas, transforming traditional postoperative remediation into preoperative prevention, fundamentally and significantly reducing the probability of serious complications such as permanent nerve damage and maxillary sinus perforation.

The utility model belongs to the technical field of medical instruments, and particularly relates to a flushing suction device for maxillary sinus mould operation, which comprises a mounting plate and a suction flushing mechanism, a mounting groove is arranged at the bottom of the mounting plate, a screw rod is rotatably connected in the mounting groove, and one end of the screw rod penetrates through the inner wall of the mounting groove and is fixedly connected with a knob. A clamping mechanism is slidably inserted into one end of the rotary knob, a plurality of clamping grooves corresponding to the clamping mechanism are formed in the mounting plate in a surrounding mode, the threaded rod is sleeved with a transmission block in a threaded mode, the bottom of the transmission block is connected with a supporting block through a turnbuckle, the supporting block and the transmission block are connected through a telescopic rod, and the bottom of the supporting block is rotationally connected with a mounting sleeve through a rotating rod. And the mounting sleeve is fixedly sleeved outside the suction flushing mechanism. According to the flushing and sucking device, through the arrangement of multiple adjusting mechanisms, the flushing and sucking device can be freely installed and fixed according to actual use requirements, and therefore the installation convenience of the flushing and sucking device is effectively improved.

The invention relates to the technical field of medical instruments, in particular to a dynamic protection system for maxillary sinus perforation in an apical surgery, which comprises an air bag, the air bag is connected with an air inflation device, a negative pressure suction device and a water leakage sensing device are arranged on the outer side of the air bag, and the air inflation device, the negative pressure suction device and the water leakage sensing device are all electrically connected with a controller. The liquid leakage condition at the perforation position is monitored in real time through the water leakage sensing device, once a leakage signal is detected, the controller immediately instructs the negative pressure suction device to start and suck away liquid and instructs the air inflation device to supplement air at the same time, the size of the air bag is finely adjusted and increased, gaps generated due to tissue changes are compensated, and it is ensured that the air bag is continuously and tightly attached to the edge of the perforation. Oral liquid and infections are fundamentally prevented from entering the maxillary sinus, the clear and dry operation view is kept, hydrostatic pressure generated by liquid accumulation is prevented from damaging the sealing performance of the air bag, and the discomfort of a patient in an operation and the occurrence probability of postoperative maxillary sinusitis are greatly reduced.