134 results about "TOOTH EXTRACTIONS" patented technology

The invention discloses an impacted wisdom tooth extraction resistance analysis simulation method and system based on CBCT and AI segmentation, is suitable for scenes of extraction resistance intelligent analysis and preoperative path simulation of impacted wisdom teeth, and assesses risks by automatically measuring the minimum spatial distance between the tooth root tip of a wisdom tooth to be extracted and a dental nerve tube. A resistance removal strategy is selected by performing three-dimensional mechanical analysis on adjacent tooth resistance, bone resistance and tooth root resistance of a wisdom tooth to be extracted, and a wisdom tooth extraction simulation path is planned based on a risk assessment result and the resistance removal strategy. According to the method, complex impacted wisdom teeth are analyzed for the first time, risk assessment and three-dimensional mechanical analysis related to an operation are achieved, and special modeling, risk assessment and tooth extraction resistance analysis can be conducted on the impacted wisdom teeth, especially the impacted mandibular wisdom teeth which are high-risk conditions that the shapes of adjacent neural tubes and tooth roots are complex and resistance sources are diversified; the pull-out difficulty, the resistance source and the intraoperative risk point are reflected, and the clinical use requirements are met.

The present invention relates to the technical field of dental medical treatment, and specifically discloses a method for using a CBCT (Cone Beam Computer Tomography) for automatically positioning a tooth, which comprises the following steps: S01, archiving CT data; S02, calculating AI and generating AI results; S03, entering CT reading by a client; S04, downloading and loading the CT data; S05, opening a function of a tooth lens; S06, selecting a corresponding tooth position in a tooth position list; and S07, selecting a 3D tooth rendering mode. The function of the ‘tooth lens’ is added into traditional CT reading, which is suitable for clinical disease diagnoses such as ‘tooth extraction, root canal therapy, tooth repair’ and the like in oral treatment, and doctors can precisely and quickly position the single tooth through selection for the tooth position, which facilitates more comprehensive analysis.

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

The invention belongs to the field of biomedical materials, and particularly relates to a self-adhesion composite patch for tooth extraction cavity wound repair and a preparation method thereof. The self-adhesion composite patch comprises a wound filling layer and an adhesion blocking layer, the wound filling layer is located in the middle of the adhesion blocking layer, the wound filling layer is made of a biological sponge material, and the adhesion blocking layer is made of polymer fibers and biological glue. The self-adhesion composite patch has excellent hemostasis, repairing, blocking, biosafety, biodegradability and water absorption, due to the excellent water absorption and biodegradability, the wound filling layer can achieve the excellent hemostasis function under the condition of a small filling amount, and meanwhile, the self-adhesion composite patch has the advantages that the self-adhesion composite patch is good in hemostasis effect and good in barrier effect. Due to the reduction of the wound filling layer and the excellent degradation performance, the self-adhesion composite patch cannot generate adverse effects on wound healing, and secondary operation for taking out the patch is not needed.

The invention relates to the field of oral medical equipment, and particularly provides an oral implant repair opening degree measuring device and a using method, the oral implant repair opening degree measuring device comprises two positioning supports, the two positioning supports are detachably connected with an angle measuring scale, and the ends of the two positioning supports are connected through a rear tooth area measuring scale; a fixing assembly and a first sliding rail are arranged in the positioning support, the fixing assembly is used for fixing the positioning support and the teeth, and the sliding rail is slidably connected with the tooth root fossa measuring mechanism. The positioning support is made of memory alloy, adaptability is high, the positioning support can be stabilized on teeth of the upper jaw and the lower jaw in the measuring process through fixing of the fixing assembly, and then measuring precision is improved. The angle measuring scale is connected to the anterior parts of upper and lower jaw anterior teeth of a patient and is used for measuring an opening angle; the posterior tooth area measuring scale is connected with the upper positioning support and the lower positioning support so as to measure the opening degree of the posterior tooth area. The tooth root socket measuring mechanism is used for measuring the depth and width of the tooth root socket exposed after tooth extraction of the patient. On the premise of meeting the requirement of opening degree measurement, a relatively accurate tooth root socket measurement function is provided.

The invention discloses an immediate implantation operation method and system based on augmented reality. The method comprises the steps that CT data of the oral cavity and the head of a patient are acquired and subjected to denoising and normalization processing; the method comprises the following steps: constructing oral digital twins of a patient based on CT data, and completing tissue segmentation, key position marking and gravity center calculation; calculating tooth extraction and implantation paths through operation design software, dynamically predicting stress states of the alveolar bone at different implantation angles and depths based on finite element analysis, and generating an implantation planning scheme; accurately registering the digital twin with the oral cavity of the patient by using multi-point identification and an SLAM (Simultaneous Localization and Mapping) algorithm, and establishing a space mapping relation of an implanting tool; a doctor wears AR glasses to carry out surgery operation, a virtual guiding path and implanting depth and angle information are displayed in real time, and a three-dimensional virtual resistance simulation curved surface is overlaid to prompt bone wall resistance changes; tooth extraction and implantation operations are completed according to AR prompts, stable fusion of the implant and a tooth extraction socket or a bone wall is achieved, and data of the whole operation process are recorded for postoperative analysis.

The present invention relates to a method of marking a tooth or teeth for identification purposes by adhering a product to the tooth that is visible to the practitioner under UV (black) light. This disclosure provides a dental bonding agent containing a resin and a component that allows the material to glow under UV black light. In order to prevent wrong-site tooth extraction, the referring dentist, for example, can apply the inventive product to a particular tooth to mark and identify the tooth to be treated by another practitioner. This mark is not visible under normal circumstances (under normal lighting conditions) and therefore would not be noticeable, but identifies the particular tooth by glowing under black light.

The utility model belongs to the technical field of liquid suction devices, and discloses a liquid suction device for tooth extraction, which comprises a base, the top of the base is connected with a machine body, one side of the machine body is provided with a control panel, the top of the base is provided with a liquid storage tank, and an exhaust pipe is communicated between one side of the top of the liquid storage tank and the machine body. By arranging the limiting assembly structure, the movable plate is pushed, the movable plate drives the rod piece to move towards the interior of the cavity groove, the rod piece enables the spring to be compressed in the cavity groove through the pressing plate, then the suction gun is placed between the fixed plate and the movable plate, the movable plate is loosened to drive the suction gun to press towards one side of the fixed plate, and therefore the suction gun can be sucked. And the movable plate clamps the suction gun in the groove, so that the suction gun is stably placed on the machine body, the suction gun is prevented from falling to the ground and being damaged, normal use of the liquid suction device is facilitated, and the practicability of the device is improved.

The application provides a tooth grinding navigation method, system and storage medium, comprising the following steps: registering to obtain a coordinate conversion relationship between any two of a CT three-dimensional coordinate system, a reference plate three-dimensional coordinate system and an optical three-dimensional coordinate system; calibrating a tooth extraction handset; constructing and optimizing an oral cavity anatomical structure segmentation learning model; segmenting oral cavity CT real-time three-dimensional data; selecting a three-dimensional model of a tooth to be treated in a tooth CT three-dimensional model; obtaining a real-time relative position between the tooth to be treated and the tooth extraction handset; and updating the three-dimensional model of the tooth to be treated in real time according to a running path of a pin tip, and eliminating three-dimensional voxels on the three-dimensional model of the tooth to be treated that coincide with the running path of the pin tip. The oral cavity anatomical structure segmentation learning model can provide assistance for analysis based on oral cavity CT real-time three-dimensional data, and real-time poses of a handset tracker and an oral reference plate collected by a binocular navigator are used to realize visual tooth grinding.

The present application relates to a kind of personalized orthodontic bite gum, the bite gum is used to cooperate with the use of invisible aligner, the bite gum is horseshoe structure in horizontal plane view, it is wedge structure of back thin front thick in sagittal plane view;The bite gum includes bite gum pad, buccal side, lingual side, the buccal side and the lingual side extend to dental arch buccal side and lingual side from the bite gum pad;The bite gum is provided with the avoidance of corresponding arrangement with the invisible aligner, the avoidance is used to avoid weak position on the invisible aligner.The bite gum provided by the present application is mainly aimed at the cases of tooth extraction, tooth defect, replacement tooth period, tooth occlusal surface design, etc.Special device case, by setting avoidance, the bite gum can avoid weak position on the invisible aligner, prevent the deformation of aligner due to the use of bite gum, affect the treatment effect, reduce the use requirement to patient, improve the use efficiency of bite gum, save time.

The utility model provides a tapping mechanism for a bottle cap injection mold, which comprises an injection mold bottom plate, a plurality of injection mold plates are assembled and mounted on an assembly column fixedly mounted above the injection mold bottom plate, at least two tapping components are arranged, the bottom end of a pressing rod of each tapping component is rotatably mounted on the injection mold bottom plate, and the bottom end of a pressing rod of each tapping component is rotatably mounted on the injection mold bottom plate. The upper end of the pressing rod is fixedly provided with a glue position sleeve piece and a tapping sleeve piece through screws, the glue position sleeve piece is located below the tapping sleeve piece, the glue position sleeve piece and the tapping sleeve piece are sleeved with a rotation stopping sleeve piece in a sliding mode, and the rotation stopping sleeve piece is sleeved with a limiting plate in a sliding mode; the die is easy to maintain, and the product quality is ensured through accurate tapping. The modular design enables the components to be tightly connected and easy to disassemble, the cost is reduced, and the efficiency is improved. The external threads of the thread drawing external member are assembled with the inclined surface of the pressing rod, so that the threads are complete and are uniformly spaced, the rotation stopping external member prevents a product from rotating, the precision is improved, and the cost is reduced.

The invention prescribes a dental tooth elevator for dental use, one embodiment of which exhibits a doubled bladed instrument formed by a U-shaped notch which resists bending for extracted teeth and gum line when embedded to expand and loosen teeth between tooth and bone both mesio-distal (backward) and bucco-lingual (side-to-side) as said elevator is twisted by operator increasing tooth movement while, unlike traditional straight elevators, the flat tipped doubled blades further resists slippage during tooth extraction.

1. The name of the product under this design: dental elevator. 2. Purpose of this design product: This design product is a medical device used for tooth extraction. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model discloses an accurate zipper tooth extraction and braid reduction device which comprises an installation base, a containing groove is formed in the upper end face of the installation base, a clamping groove is formed in the inner side wall of the containing groove, a first cutter groove is formed in the top wall of the clamping groove, and a second cutter groove is formed in the bottom wall of the clamping groove. An auxiliary cutter is fixedly mounted in the second cutter groove, a fixing plate is fixedly mounted on the upper end face of the mounting base through a plurality of fixing frames, a hydraulic telescopic cylinder is fixedly mounted on the upper end face of the fixing plate, and an output shaft of the hydraulic telescopic cylinder penetrates through the upper end face of the fixing plate and extends to be provided with a mounting plate; and a plurality of mounting grooves are symmetrically formed in the lower end surface of the mounting plate. By arranging the hydraulic telescopic cylinder, the pressing device, the first cutter, the second cutter, the mounting plate, the fixing device, the sliding groove, the limiting hole and the sliding block, the zipper braid and zipper teeth can be accurately cut, and meanwhile the first cutter can be conveniently and rapidly disassembled and assembled.

The utility model relates to the technical field of medical instruments, and provides a small-angle turbine handpiece. Comprising a handle body, and the front end of the handle body is connected with a machine head assembly; wherein the handle main body comprises a connecting section, a transition section and a holding section which extend in sequence; a water guide channel is formed in the connecting section, the water guide channel extends to the water outlet end of the machine head assembly, the water guide channel is formed in the machining process of the connecting section, and the water guide channel is in smooth transition towards the corner of the machine head assembly. The mobile phone has the beneficial effects that the included angle between the rotation axis of the mobile phone needle and the axis of the handle main body is 5-15 degrees, so that the mobile phone handle can be effectively prevented from colliding with adjacent teeth adjacent to the extracted teeth in the tooth extraction process; according to the mobile phone, the water guide channel is naturally formed in the machining process of the handle, the water guide channel is in smooth transition towards the corner of the machine head assembly, water flow stably flows when passing through the corner, and stable water flow can be provided for the water outlet end of the machine head assembly.

The utility model provides a saliva absorber during tooth extraction, which relates to the technical field of dental appliances and comprises a microporous support, an outer absorbent cotton layer and a U-shaped clamping piece, the outer absorbent cotton layer is fixed on the outer side of the microporous support in a surrounding manner, the U-shaped clamping piece is arranged above the microporous support, communicating holes are formed in the lower portion of the microporous support in an annular array manner, and the communicating holes are communicated with the outer absorbent cotton layer. The top of the micropore support is fixedly connected with an upper connecting sliding frame, the tail portion of the micropore support is communicated and fixed with a drainage tube frame, the outer portion of the outer absorbent cotton layer is covered with an outer yarn cotton layer in a surrounding mode, and the outer yarn cotton layer is of a net-shaped structure. The microporous stent is in indirect contact with the oral cavity and saliva through cooperation of the outer absorbent cotton layer made of cotton balls, the situation that when an existing guide plastic pipe is in direct contact with the oral cavity, the inner membrane of the oral cavity is damaged is avoided, air suction noise can be eliminated through cooperation of the microporous stent and the outer absorbent cotton layer, and the problems that the plastic pipe only absorbs the saliva locally, the range is small, and the oral cavity is damaged are solved. Meanwhile, the problem that the inner membrane of the oral cavity is damaged due to overlarge force of the flow guide plastic pipe is solved.

The invention provides an accessory device for fixing orthodontics to realize mandibular advancement. The accessory device comprises an upper jaw guide base and a lower jaw guide base, the upper jaw guide plate is arranged at the bottom of the upper jaw guide base, and a convex block is fixedly mounted at the bottom of the upper jaw guide plate. According to the accessory device for fixing orthodontics to realize mandibular advancement, through mutual cooperation of the upper jaw guide base, the lower jaw guide base, the upper jaw guide plate, the lower jaw guide plate and other structures, tooth extraction operation does not need to be carried out in the use process, wounds caused by tooth extraction and potential influences on tooth integrity and oral cavity functions are avoided, and the accessory device is suitable for popularization and application. The trauma of treatment is reduced; meanwhile, as a fixed orthodontic device, the cost is lower than that of an invisible orthodontic mandibular leading scheme, and the economic burden of a patient is relieved; moreover, after fixed installation, a patient does not need to independently wear and manage the device for a long time, dependence on compliance of the patient is reduced, the treatment effect can be more stably guaranteed, and the treatment period is shortened.

The utility model belongs to the technical field of oral cavities, and particularly relates to oral and maxillofacial surgery dental forceps which comprise a dental forceps hand frame, and the dental forceps hand frame is hinged to the end of a hinge shaft. A clamping plate is hinged to the end part of the hinge shaft; friction blocks are mounted at the end parts of the clamping plates; a clamping groove is formed in the end part of the hinge shaft; a fixing block is slidably connected into the clamping groove. A fixing block is inserted into a clamping groove, then rapid installation is carried out through a fixing unit, a clamping plate is driven to rotate by controlling a dental forceps hand frame, illumination is carried out through an illumination device, a doctor can conveniently pull out teeth, needing to be replaced, of a patient, the tooth extraction precision and efficiency of the doctor are effectively improved, and the practicability is high. And then the clamping effect of the clamping plates is improved through the friction blocks.

The utility model provides a dental minimally invasive tooth extraction simulation device with a pressure feedback system, which relates to the technical field of medical instruments and comprises a base and a support rod. A spherical shell is supported on the base through a supporting rod, and a notch is formed in the spherical shell; the first inductor is used for simulating teeth, the fixing ring simulates a gum, and the upper and lower induction mechanisms correspond to an upper jaw and a lower jaw respectively. By means of the shielding function of the spherical shell and the mask, a dark environment similar to the interior of an oral cavity is created, and the operation of pulling the first inductor out of the fixing ring can simulate the tooth extraction process; whether the first inductor or the second inductor receives abnormal pressure feedback, signals can be transmitted to the controller through the lead-in wire, and then the controller controls the buzzer to make interrupted sound through the lead-out wire, so that problems in the simulation process are prompted, and related personnel are prompted to adjust in time. The problems that an existing dental tooth extraction simulation device is lack of a pressure feedback system and cannot feed back the treatment effect well are solved.

The invention discloses a method for establishing a mouse radioactive jawbone injury animal model, which comprises the following steps of: performing tooth extraction operation, performing radiation treatment after one day, and performing Micro-CT (Computed Tomography) scanning, intraoral examination and histopathologic detection on the lower jawbone on the thirteenth day after radiation so as to determine that the radioactive jawbone injury mouse model is successfully constructed. The animal model has the advantages that the pathological process of human early radioactive jaw necrosis is accurately simulated; the model is stable, good in repeatability and suitable for large-scale experimental research; and a reliable, short-cycle and convenient-to-operate animal model is provided for the mechanism research of radioactive jaw necrosis and the development of new drugs.

This invention discloses a method for preparing biomimetic calcium phosphate particles carrying type III recombinant human collagen, relating to the field of new biomedical materials. The particle formulation, by mass percentage, contains 50%-90% hydroxyapatite and 10%-50% type III recombinant human collagen. The preparation process involves artificially synthesizing hydroxyapatite precipitate, then compounding it with type III recombinant human collagen. The compounded material is then spread, naturally dried, crushed, and sieved to form particles. The resulting particles have a uniform and controllable particle size. When mixed with blood or water, they can quickly form a high-viscosity, malleable, and stable filling material, directly adapting to the site preservation requirements of alveolar sockets after tooth extraction. The advantages are: the degradation rate of these particles precisely matches the bone regeneration rate after site preservation surgery, efficiently guiding bone tissue regeneration while significantly shortening the waiting period for implantation after tooth extraction. This solves the clinical promotion difficulties caused by the long waiting period and complex operation of site preservation surgery, contributing to the widespread application of this technology in oral clinical practice.

An electroactive titanium support-reinforced composite film includes a titanium support and a film material coating the titanium support. The titanium support has a structure designed according to securing sites. The electroactive titanium support-reinforced composite film of the present invention can be bent and shaped for a close fit with a hard tissue, has excellent mechanical performance and a stable electroactive bending strength of bionic magnitude, and can prevent the collapse of surrounding tissues and tissue adhesion, effectively maintain a three-dimensional space for bone osteanagenesis and effectively promote bone injury healing, featuring ease and convenience of clinical operation and capability of promoting bone marrow mesenchymal stem cell adhesion, cytoskeleton rearrangement and induced osteogenic differentiation. The support-reinforced composite film is suitable for mandible or cranium injury repair in different ranges and has significant efficacy for clinical indications such as alveolar bone vertical bone augmentation and alveolar ridge preservation after tooth extraction.

The present invention relates to a system for displaying orthodontic information of an oral cavity and, more specifically, to a system for displaying orthodontic information of an oral cavity, the system being capable of displaying changes in the positions of teeth to be corrected and also displaying a tooth extraction state, by using oral cavity scan data obtained by scanning the shape of a patient's oral cavity for orthodontic treatment. The system for displaying orthodontic information of an oral shape, according to the present invention, enables movements of teeth for the patient's orthodontic treatment to be easily displayed or enables teeth to be extracted to be easily displayed, and enables the shape of the oral cavity after orthodontic treatment and tooth extraction are finished, to be visually displayed in an easy and quick manner, thereby facilitating the establishment of a plan for orthodontic treatment.

The invention discloses a complex tooth extraction digital simulation training system based on endoscope assistance, and relates to the technical field of oral medicine education and digital medical treatment. Comprising a multi-modal anatomical database module used for storing three-dimensional anatomical data, endoscope image data and biomechanical parameter data of an oral maxillofacial region; the endoscope visual field simulation module simulates the dynamic visual field of the endoscope in the virtual oral cavity based on a ray tracing algorithm; the force feedback operation module is used for providing real operation resistance feedback through a mechanical arm operation end and a force sensor; and the operation quantitative evaluation module is used for automatically recording and analyzing operation safety and efficiency indexes. According to the invention, endoscope visual field simulation, operating force feedback and quantitative evaluation in a real anatomical environment are realized, and the problems of insufficient sense of reality, high risk and difficult evaluation in traditional training are solved.

The invention discloses a method and a system for rapidly drawing up an Angler class II malocclusion treatment scheme, and belongs to the field of orthodontics, and the method comprises the following steps: obtaining head shadow measurement data and model measurement data, and distributing a unique variable code for each data; calculating tooth extraction gap values corresponding to all upper and lower jaw tooth extraction combinations based on the obtained tooth crown widths; based on the data after the unique variable code is allocated and the tooth extraction gap value, establishing constraint conditions for the key parameters; all tooth extraction combinations of the upper jaw and the lower jaw are calculated one by one, Z treatment scheme candidate combinations meeting the constraint conditions are screened, and corresponding parameter calculation results are output. According to the method, a more accurate treatment scheme can be provided, the uncertainty of decision making can be effectively reduced in clinical practice, a clinician is helped to judge whether key treatment decisions such as tooth extraction and anchorage selection are needed or not through quantitative analysis, therefore, making of clinical decisions is assisted, and scientificity and accuracy of treatment planning are improved.

This invention relates to a decellularized oral collagen plug and its preparation method. The plug comprises an upper decellularized matrix membrane and a lower decellularized sponge plug. The preparation method is as follows: pretreated fresh animal-derived membrane material is treated with trypsin solution and sodium hydroxide solution, washed with purified water to obtain a decellularized matrix membrane; a portion of the obtained decellularized matrix membrane is placed in a low-temperature tissue ball mill, pulverized, homogenized, filtered, and washed with purified water to obtain a decellularized collagen solution; the decellularized collagen solution is poured into a freeze-drying mold, defoamed under low-temperature vacuum, covered with the decellularized matrix membrane, and after vacuum defoaming, freeze-dried and vacuum thermally cross-linked to obtain the finished collagen plug. This invention's decellularized oral collagen plug is suitable for filling and covering wounds after tooth extraction. The upper decellularized matrix membrane effectively prevents fibroblasts and epithelial cells from invading bone defect areas, while the lower decellularized sponge plug stabilizes blood clots, provides a biological scaffold, reduces postoperative complications, and promotes wound healing.

The invention relates to a self-ligating bracket which comprises a bracket body, the bracket body is provided with a base plate, an arch wire groove and a sliding locking plate, and the self-ligating bracket is characterized in that the sliding locking plate is provided with a locking plate cover plate covering the arch wire groove in a locked state, and the contact area of the locking plate cover plate and an arch wire is relatively small through a preset shape; therefore, the friction force between the two is reduced. According to the self-ligating bracket, on one hand, friction force can be reduced, efficient movement of teeth under light-force correction can be achieved, due to the fact that the self-ligating bracket has a large groove space, tooth extraction gap closing and aligning and leveling under double arch wires can be achieved at the same time, the correction time can be greatly shortened, on the other hand, full deformation of the arch wires in the ligating state can be achieved, and the orthodontic effect is good. The efficient control of the teeth is realized, and the teeth are fully arranged and leveled.

The invention discloses a tooth extraction protection device, and belongs to the technical field of dental medical instruments. Comprising a saddle-shaped body, a pressure sensing module, a vibration feedback module and a rapid maintenance device, wherein the saddle-shaped body is worn, attached to the surface of an adjacent tooth and used for protecting the adjacent tooth; a shape memory alloy support is arranged in the body, and a flexible buffer layer is arranged on the inner side of the shape memory alloy support. The pressure sensing module comprises piezoelectric sensors distributed on the body and is used for monitoring pressure distribution in a tooth extraction process in real time; the vibration feedback module is arranged on the operation end and electrically connected with the pressure sensing module, and when it is detected that the pressure exceeds a set threshold value, a touch vibration prompt is sent to the operation end; the rapid maintenance device comprises an ultraviolet disinfection box used for storing the body, and the body is detachably connected with the operation end through a magnetic rapid disassembly connector. The device can monitor the stress of adjacent teeth in real time during tooth extraction, when the stress is too large, the stress is fed back to a doctor for timely correction, and the safety and efficiency of tooth extraction are improved.

The utility model relates to the technical field of tooth pulling devices, and provides a saw blade tooth pulling device for a machine tool, which comprises a mounting seat, a fixing plate is fixedly mounted on the bottom side of one end of the mounting seat, a protective shell is fixedly mounted at the bottom end of the fixing plate, and a swing box is fixedly mounted at the bottom end of the fixing plate on the inner side of the protective shell. And a driving motor is fixedly mounted at the bottom end of the swinging box. The tooth pulling structure is arranged, the fixing base is fixedly installed at one end of the limiting rod through the bolt, then the limiting base penetrates through the limiting base, one end of the fixing base is made to be close to one side of the fixing shaft, and the distance between the tooth pulling push needle and the fixing shaft can be adjusted by moving the limiting rod. According to the saw blade tooth pulling device for the machine tool, tooth pulling treatment can be conveniently carried out on saw blades of different specifications on the outer side of the fixing shaft, the function that the device is convenient to adjust the tooth pulling distance is achieved, and therefore the use convenience of the saw blade tooth pulling device for the machine tool is improved.

The invention relates to the technical field of medical apparatus and instruments, and discloses an adjustable decayed tooth extractor which comprises a mounting seat, a first hinge shaft is rotatably arranged on the mounting seat, two tooth extraction forceps are arranged on the first hinge shaft, a drug delivery mechanism is arranged on one tooth extraction forceps, and a liquid extraction mechanism is arranged on the other tooth extraction forceps; the dosing mechanism comprises a medicine storage groove, a piston, a first spring and a plurality of discharge ports, the medicine storage groove is formed in one of the dental forceps, the piston is slidably arranged in the medicine storage groove, the first spring is arranged in the dental forceps, one end of the first spring is connected with the dental forceps, the other end of the first spring is connected with the piston, and the discharge ports are formed in the dental forceps; and the plurality of discharge ports are communicated with the medicine storage tank. According to the adjustable tooth decay tooth extraction device, the position of the jaw can be fixed during tooth extraction, so that a doctor does not need to maintain the position with hands for a long time, one of the forceps parts is used for coating a wound with a hemostatic drug, and the other forceps part is used for sucking bloodstain.