2303results about "Boring tools" patented technology

The invention provides an oral surgery positioning and navigation method and system and a storage medium, and the method comprises the steps: calibrating an implanted mobile phone to obtain a unit vector of a rotating shaft of a drill bit and a three-dimensional coordinate value of the tip of the drill bit under an optical three-dimensional coordinate system, scanning to obtain a CT three-dimensional model of a patient, and segmenting to obtain a tooth CT model and an alveolar bone CT model; generating a tooth three-dimensional point cloud according to the real-time pattern of the speckle structured light on the teeth of the patient, acquiring a matrix transformation relation between a CT three-dimensional coordinate system and an optical three-dimensional coordinate system, and performing real-time navigation on the implanted mobile phone according to the real-time point position deviation and the real-time angle deviation of the drill bit. According to the technical scheme, the matrix transformation relation between the CT three-dimensional coordinate system and the optical three-dimensional coordinate system is calculated through the tooth CT feature points and the tooth point cloud feature points, and auxiliary navigation is carried out by comparing the target position of the implant with the real-time pose of the tip of the drill bit, the direction vector of the planting path and the unit vector of the rotating shaft of the drill bit. Operation is convenient and positioning precision is high.

Image acquisition device comprising: - a support (12); - a dental retractor (14) fixed to the support and defining a retractor opening (24); and - means for fixing an image acquisition device to the support in a position in which the acquisition device is oriented to receive an image of the retractor opening.

An oral rinse capsule is provided. The oral rinse capsule is configured to be mounted in a capsule accommodating chamber of a water flosser, and includes a capsule shell assembly, a moving member, a piston assembly, and a connecting shell. The moving member is movably arranged in the capsule shell assembly. The oral rinse accommodating chamber is formed between an inner wall of the moving member and an inner wall of the capsule shell assembly. The capsule shell assembly is further provided with a piston chamber. The piston chamber is communicated to the oral rinse accommodating chamber and is configured to be communicated to a liquid outlet of the water flosser. The piston assembly is slidably arranged in the piston chamber. The connecting shell is provided with a sliding chamber. The capsule shell assembly is slidably arranged in the sliding chamber.

Embodiments relate to a flame barrier that may be adhered or mechanically fastened to a substrate to provide fire resistance and / or an outer protective surface. The flame barrier may alternatively be adhered or mechanically fastened to an existing flame barrier to provide increased fire resistance and / or increased protective ability. The flame barrier is configured to protect against high temperature flames, prevent flame penetration, and contain aggressive flames to reduce the severity of the flame's impact, heat, and velocity.

An endodontic microcannula system for evacuation of root canal contents from a root canal of a patient. The system includes a microcannula for insertion into the root canal, a handpiece for vibrating the microcannula while it is disposed within the root canal, and an irrigation fluid reservoir for supplying irrigation fluid to the root canal, an a vacuum source for drawing the fluid and root canal debris into the microcannula and out of the root canal.

A splint device (100) for robotically-guided surgery includes elongate first and second splint portions (200, 400) each having opposed longitudinal ends and an interface edge extending between the ends, wherein the respective interface edges (250, 450) are arranged as a complement to each other. First and second alignment elements (800A, 800B) engaged with the first and second splint portions are arranged to interact with each other such that a substantially consistent gap is defined between the first and second interface edges, from the first ends to the second ends of the first and second splint portions. A threaded member (900) is engaged between the first and second splint portions and arranged to advance the first and second interface edges toward each other in response to advancement of the threaded member. A tracking portion (1000) having a kinematic mount (1100) engaged therewith is engaged with the first or second splint portion and extends outwardly therefrom. An associated method is also provided.

The present invention relates to the field of dental implants, and in particular to an artificial dental implant positioning auxiliary tool. The tool comprises a positioning base plate, a first positioning member and a second positioning member. A first mounting platform and a second mounting platform are provided on the positioning base plate. The first mounting platform is located above the dental implant point, and the second mounting platform and the first mounting platform are spaced apart. The first positioning member is provided on the first mounting platform, and the second positioning member is rotated and provided on the second mounting platform. The second positioning member and the first positioning member are assembled to form a positioning hole. The present invention sets the positioning hole in an assembled form. When the drill bit is positioned, the second positioning member is rotated to an open state to facilitate the entry of the drill bit. Then, the second positioning member is switched to an assembled state to form a positioning hole to position the drill bit. There is no need for the drill bit to find a position for insertion, which is convenient for installation. At the same time, the diameter of the positioning hole can be set to match the diameter of the drill bit matching position. There is no need to reserve a large gap, and the positioning is more accurate. The positioning hole can be opened to facilitate the discharge of bone chips.

The dental handpiece has a handle and a housing with a first light-emitting diode and a first optical sensor. The housing also has a second light-emitting diode, a second optical sensor, shielding windows for each optical and apertures for supplying compressed air to each shielding window. A diffuser is located in each aperture, the diffuser being adapted to generate an air jet forming an air curtain. The dental handpiece can provide a reliable protection of the optical sensors by the air curtain and a high-quality three-dimensional image of an oral cavity during manipulation.

The invention relates to an energy storage cabinet, belongs to the technical field of batteries, and solves the problem of poor heat dissipation air fluidity of an energy storage cabinet in the prior art. The power distribution cabinet comprises a cabinet body, a forced ventilator and a battery unit, wherein the cabinet body comprises a plurality of mounting chambers; the battery unit is mounted in the mounting chamber; and the forced ventilator is mounted on the mounting chamber and is used for performing forced ventilation on the battery unit and improving air flow for ventilation and heat dissipation. According to the energy storage cabinet, the forced ventilator is arranged to perform forced ventilation on the battery units, so that the air flow for ventilation and heat dissipation is improved, the accumulation of heat generated by the battery units in the cabinet body is reduced, and the use safety of the energy storage cabinet is improved.

A directed energy firefighting device is disclosed to extinguish fires with light, comprising a structured light generator and a directed energy controller for detecting and extinguishing fires remotely and at the speed of light. The device employs structured directed light energy capable of inducing atmospheric avalanche breakdown, generating at least one of sound waves and shockwaves, and dynamically forming space-time acoustic arrays for precise fire suppression. The system may integrate one or more energy sources, including gyrotrons, traveling wave tubes, klystrons, free electron lasers, and others, to produce diffraction-resistant and dynamically structured beams that penetrate through the atmospheric and non-metalic solid physical obstructions. Key features also may include safety mechanisms and artificial intelligence for real-time optimization. Other applications include power beaming, environmental monitoring, medicine, disaster response, and orbital debris clearing are also discussed. A key feature is the ability for arbitrary manipulation of light over large areas.

The present invention relates to the field of ring network box technology, and discloses an intelligent primary and secondary fusion ring network box, comprising an outer box and multiple inner boxes arranged in the outer box, the outer box's top cover, box side walls, box bottom tray and box back wall are all hollow structures, multiple exhaust fans are arranged on the inner plate of the box top cover, each exhaust fan is located above the corresponding inner box top air outlet, the cavity in the box top cover is divided into multiple separate upper ventilation cavities by multiple upper partition plates, each exhaust fan is connected upward to a different ventilation cavity, the cavity in the box back wall is divided into multiple separate rear ventilation cavities by a rear partition plate, the rear ventilation cavity in each box back wall is connected to the corresponding upper ventilation cavity in the box top cover to form a separate ventilation cavity, and a gas detection device is respectively arranged in each ventilation cavity. It has a block-type ventilation and heat dissipation system and a block-type detection system, has good waterproof, moisture-proof, anti-collision and anti-leakage effects, and optimizes the wiring layout.

There is provided a method comprising: detecting and / or segmenting a dental-related anatomical structure of a subject from a dental 3D imaging model, wherein the dental-related anatomical structure includes a target for injection of anesthesia by a dental syringe, accessing sequential frames of an oral cavity of a subject captured by an image sensor during a dental session of the subject, presenting within a GUI, at least one fused frame depicting a merger of the sequential frames and the segmentation of the dental-related anatomical structure of the subject registered to the sequential frames, wherein the dental-related anatomical structure is depicted on the sequential frames at a location indicating the target for injection, and dynamically updating the location of the dental-related anatomical structure depicted on the sequential frames according to dynamic adaptation of a pose of the image sensor.

Proposed are schemes, solutions, concepts, designs, methods and systems pertaining to aiding and / or improving oral care apparatus having cleaning elements that are adapted, in use, to engage dental tissue of the user. Embodiments propose that, based on light reflected from a surface of the oral cavity during use, an indication of positioning with respect to a tooth surface or gum tissue of the user may be determined. That is, it may be determined whether a cleaning element is positioned at a tooth surface or gum tissue of the user by analyzing light reflected from a surface of the oral cavity.

A safety management system for building construction monitoring disclosed by the present invention comprises a sensing layer, an edge layer and a platform layer, the sensing layer is used for full-dimensional data acquisition, and the sensing layer comprises a personnel safety monitoring module, an equipment state monitoring module, an environment monitoring module and a structure health monitoring module. The personnel safety monitoring module comprises an intelligent safety helmet and a positioning bracelet, the equipment state monitoring module comprises a tower crane monitoring subsystem and an elevator monitoring subsystem, the environment monitoring module comprises a gas detection array and a micro meteorological station, and the structure health monitoring module is composed of a fiber bragg grating sensing network. According to the safety management system for building construction monitoring, the problems of monitoring blind areas and data islands existing in traditional monitoring are effectively solved, a complete data base is provided for safety management, emergency time is shortened by more than 80% compared with traditional manual disposal, and the transmission reliability of key data is ensured while wide-area coverage is ensured.

A device that is an improved rapid expansion fire stop and system for wall openings. The fire stop is made of a backer rod comprised of a durable foam material in a pre-determined size and cross-sectional configuration, the backer rod has a slot that accepts an intumescent strip with expansion characteristics of expanding up to thirty-three (33) times its size and volume when exposed to high heat or flame. The firestop is placed into the wall opening or crack of the wall system and then the wall system is completed with an architectural sealant across the remaining crack. The improved expanding rapid expansion fire stop serves to prevent fire, smoke and heat by expanding and fully sealing the wall opening and crack from any intrusion or passage of the heat, smoke or flame through the opening.

An energy storage system includes a battery module including a plurality of battery cells, a battery rack supporting the battery module, a detector configured to detect at least one of a change in temperature or a change in size of the battery module, and a fire extinguisher configured to spray a fire extinguishing agent on the battery module based on data detected from the detector.

A dual interface screw element includes a screw body (10) with an external thread (12) and two distinct engagement interfaces (13, 15), one for inserting the screw and another for removing it. The removal engagement interface (15) includes a reverse thread (16) located in an axial recess (36) such that a complementary reverse-threaded tool (24) applying torque to extract the screw body is tightened against the second engagement interface. The screw is part of a system including an extraction tool (24) and an insertion tool (18). Applications include medical applications such as dental implants and bone screws, domestic applications such as headless wall mounting anchors, and a wide range of other industrial and aerospace applications.

To provide an architectural member high in heat-shielding property, and a method for producing an architectural member.SOLUTION: An architectural member includes a substrate comprising a heat-durable crystallized glass plate, and a transparent film provided on at least one principal plane of the substrate. The transparent film contains sodium silicate. A method for producing an architectural member includes coating at least one principal plane of the substrate comprising the heat-durable crystallized glass plate with a coating material composition containing sodium silicate to form the transparent film. A method for producing an architectural member includes bonding a transparent film containing sodium silicate to at least one principal plane of the substrate comprising the heat-durable crystallized glass plate.SELECTED DRAWING: Figure 1

Embodiments include thermal covers to help drain fluids away from dangerous environments, e.g., in an engine bay in a vehicle. Thermal covers can comprise a hat portion extending between two distal edges, support straps beneath the hat portion and extending between the distal edges, and thermal insulation disposed between the hat portion and the support straps. These can be coupled to the floor so as to allow space below for the flow of fluid. This allows the fluid to flow to holes in the floor of the engine bay, allowing the fluid (which could be flammable) to be drained away from potentially dangerous environments in the engine bay which may involve high temperatures.

A battery module includes a plurality of battery cells; a module housing configured to accommodate a cell stack including the plurality of battery cells; a sprinkler provided through the module housing at one side of the cell stack in a stacking direction; and a thermally expanding block disposed in an empty space inside the module housing and configured to be thermally expanded according to a temperature rise inside the module housing.

A stay cable fire-stopping device capable of bidirectional expansion when exposed to heat. The fire-stopping device comprises a fire-stopping ring and a positioning clamp (2). The fire-stopping ring is fixedly disposed on the surface of a stay cable body (4) by means of the positioning clamp (2), and wraps around the stay cable body (4). When exposed to heat, the fire-stopping ring expands inwards to tightly hold the stay cable body (4), and expands outwards to isolate portions of the stay cable body (4) on two sides of the fire-stopping ring. A weather-resistant fireproof tape (206) is wound around the stay cable body (4) at the location where the fire-stopping ring is disposed, and the fire-stopping ring is arranged outside the fireproof tape (206). The fire-stopping ring comprises a fire-stopping ring outer shell (9) and a fire-stopping core material (10), and the fire-stopping core material (10) is disposed inside the fire-stopping ring outer shell (9). The device uses a bidirectionally expanding fire-stopping core material as the core component for fire prevention. By virtue of its thermal expansion property, the core material, when exposed to heat, expands inwards to tightly hold the cable body and expands outwards to isolate portions of the cable body on two sides, thereby stopping fire from spreading.

A depth stop for a drilling tool to form a hole of predetermined depth. The depth stop includes an interface portion that couples directly to the shank of the osteotome via interlocking spur and groove features. The interface has a cap flange and a tapered skirt. The underside of the cap flange establishes a reference surface for a tubular key that slides onto the tapered skirt and is held there by friction. The skirt is formed with a relief directly under the cap flange to facilitate haptic confirmation of proper connection. Elongated irrigation windows in the key expose a domed transition on the osteotome, thereby facilitating irrigation. The depth stop can be used, optionally, with an alignment jig designed with a precision guide bushing. The guide bushing is semi-cylindrical and terminates with an internal abutment step against which the lower end of the key engages at full depth.

The invention relates to the field of intelligent charging, in particular to an electric bicycle intelligent charging shed which comprises an intelligent ceiling, a bottom bicycle carrying platform and a main body vertical box, the intelligent ceiling is hinged to the upper end of the main body vertical box through a pin shaft, the bottom bicycle carrying platform is hinged to the main body vertical box through a pin shaft, and a socket is integrally installed on the main body vertical box. The intelligent ceiling is provided with a smoke sensor corresponding to each charging station, the intelligent ceiling is fixedly provided with a plurality of first fireproof roller shutters, the first fireproof roller shutters are located on the two sides of the intelligent ceiling, and the intelligent ceiling is further provided with a fire alarm in an integrated mode, so that the intelligent ceiling can be transferred without being disassembled according to actual needs; and meanwhile, the electric vehicle on fire can be isolated, and fire is prevented from further spreading.

A socket preparation tool configured to facilitate autotransplantation of a donor tooth to a recipient site is provided. The socket preparation tool includes a tooth replica of the donor tooth. A coronal portion is optionally included for facilitating alignment of the tooth replica adjacent teeth during a simulated autotransplantation. A radicular portion includes a smooth surface configured to facilitate compression of soft bone or soft tissue of the tooth replica or a contoured surface adapted for filing or cutting bone of the tooth replica. A cylindrical attachment is configured to be coupled to the tooth replica, such as via a receiver. A method of guided autotransplantation of a donor tooth via the customized socket preparation tool includes at least fitting and adjusting the socket preparation tool coupled to the tooth replica in the recipient site, before extracting the donor tooth.

The invention relates to a dental drilling hardness real-time monitoring method based on vibration signal analysis and a dental hardness sensor. The dental drilling hardness real-time monitoring method comprises the following steps: acquiring a three-dimensional vibration displacement signal; after filtering and multi-dimensional feature extraction, obtaining a vibration feature vector representing the mechanical impedance of the tooth body; inputting the hardness index and the vibration displacement into a trained machine learning model, and mapping and outputting the hardness index and the vibration displacement of the current drilling area in real time; packaging with a timestamp, and serializing and storing as a traceable historical record; the system continuously presents hardness change in a dynamic waveform and a color gradient, and prompts when detecting that the hardness changes suddenly or crosses a boundary. Compared with the prior art, the method has the advantages that the three-dimensional micro-vibration signal of the drill bit can be converted into the digital fingerprint of the mechanical impedance of the tooth tissue in real time, and a visualization-reminding closed loop is driven by the hardness index flow synchronized with the timestamp, so that the drilling hardness in-situ sensing is realized.

A dental high-speed contra-angle handpiece (1) for processing hard materials in the oral cavity of a patient, comprising: an outer sleeve (2) delimiting the dental high-speed contra-angle handpiece (1) from the environment, said outer sleeve having a handle portion (2A) extending along a longitudinal axis (3) and a head portion (2B) extending along a rotational axis (4), wherein the longitudinal axis (3) and the rotational axis (4) are arranged at an angle other than 0° to one another; a holding device (5) arranged in the head portion (2B) for holding a processing tool (6) such that it can rotate about the rotational axis (4); a tool receiving opening (7) for inserting and releasing the processing tool (6) into the holding device (5); a mechanical drive device (8) for rotating the holding device (5) to an idle speed of at least 140,000 rpm; and a spring element (25) preloaded and displaceable along the rotational axis (4). Actuator (19),which is operatively connectable to the holding device (5) in order to selectively move the holding device (5) from a first position, in which the machining tool (6) is fixed in the holding device (5), to a second position, in which the machining tool (6) can be inserted into or removed from the holding device (5), characterized in that the holding device (5) comprises: a drive sleeve (9) for releasably receiving a shaft (6A) of the machining tool (6), wherein the drive sleeve (9) has an outer wall (9A) in which a plurality of through-bores (10) are provided, and the outer wall (9A) surrounds a cylindrical interior (11) in which the shaft (6A) of the machining tool (6) can be received, a plurality of holding bodies (12) movable radially to the axis of rotation (4), wherein a holding body (12) can be received in each of the through-bores (10) of the drive sleeve (9),a clamping sleeve (13) which is displaceable along the rotational axis (4) and has a clamping sleeve wall (13A) which surrounds the holding bodies (12) and at least the section of the drive sleeve (9) having the through-bores (10), wherein by displacing the clamping sleeve (13) along the rotational axis (4), the holding bodies (12) are movable radially with respect to the rotational axis (4) and the clamping sleeve (13) and / or the holding bodies (12) selectively assume the first position and the second position, wherein in the first position the holding bodies (12) are pressed by the clamping sleeve (13) into the through-bores (10) of the drive sleeve (9) in such a way that sections of the holding bodies (12) protrude into the cylindrical interior (11) of the drive sleeve (9), whereby the shank (6A) of the machining tool (6) is fixed in the cylindrical interior (11) of the drive sleeve (9), and in the second position the Clamping sleeve (13) surrounds the holding body (12) with play,so that the holding bodies (12) can be moved radially away from the axis of rotation (4), whereby the shaft (6A) of the machining tool (6) can be inserted into or removed from the drive sleeve (9).

The utility model discloses a novel waterproof and fireproof protective cover which is characterized in that an upper sliding rail is enclosed to form a ring and is arranged above the ground; a ceiling is arranged in an annular shape defined by the upper sliding rails, and the ceiling is matched with the hollowed-out areas of the upper sliding rails; the supporting stand column is arranged on the ground and connected with the upper sliding rail. The isolation unit is slidably connected with the upper sliding rail, and the height of the isolation unit is larger than or equal to the distance from the upper sliding rail to the ground. The driving power source is in transmission connection with the isolation unit and is electrically connected with the terminal; the sensor is arranged on the upper sliding rail and / or the supporting stand column, and the sensor is electrically connected with the terminal. Through the combination of the upper sliding rail and the isolation unit, air or flames can be rapidly isolated from fire disasters in closed spaces such as garages and workshops, and spreading of the flames is effectively prevented. Environmental parameters are monitored in real time through the sensor system, early warning and intelligent response of fire risks are achieved, and the efficiency and reliability of fireproof protection are further improved.

This application relates to the technical field of utility tunnels, and provides an intelligent identification and prevention and control linkage system for cable fires in utility tunnels. In this system, a cable fire simulation device is used to simulate cable fires in the utility tunnel; an image acquisition unit is used to monitor the cable fire behavior in the tunnel in real time, and the collected simulated fire image information is transmitted to the deployed fire identification model in real time for fire identification, so as to judge the fire identification results of the fire identification model through the deployed fire warning model, and issue a fire extinguishing command or a warning command according to the judgment results; furthermore, after receiving the fire extinguishing command, the fire extinguishing linkage device responds, and the self-made fireproof rolling shutter with flexible steel brushes is first activated to block the fire point area; subsequently, the telescopic end of the electric push rod installed on the top of the tunnel quickly extends to break the heat-sensitive glass ball of the suspended fire extinguisher, realizing the rapid linkage prevention and control of cable fires in the tunnel.

The present invention relates to methods for curing polymeric dental appliances comprised of partially cured photopolymerizable components, especially for additively manufactured denture base and artificial tooth components utilized in the production of full and partial dental prostheses. In particular, the invention relates to methods of utilizing a curing apparatus having one or more controllable heating sources and one or more controllable LED light sources to achieve specific preheating and light curing conditions for more effectively converting partially cured photopolymerizable components from a partially cured state to a final cured state.