45 results about "Plaster Casts" patented technology

Device for the digitization and manufacturing of dental models, for replicating the cavity and position of the implant connection in plaster and digital 3D models, having an analog, a fixing element and a multipurpose accessory, as a reference when digitizing and as an aid when inserting the analog in and removing it from the model. The analog, the fixing element and the accessory are adapted for fixing the analog on the 3D printing model and / or connecting the analog to the accessory. The external surface of the analog combines cylindrical portions and flat vertical and horizontal faces, which define positioning surfaces, for use as a scan analog. And, for plaster models, the device includes a protective cover for the analog.

The application discloses a kind of production methods of digital active complete denture, first according to the oral data of patient, pours and takes plaster model;The plaster model is scanned, and detection type active denture is made;Detection and adjustment of each production index are detected and adjusted by wearing detection type active denture, and each production index of detection and adjustment is input into software, the arrangement of artificial tooth and the design of base are completed, and then resin base and artificial tooth are made respectively, resin base, artificial tooth and upper and lower jaw plaster model are assembled on bite frame, silicon rubber is used to print upper and lower jaw artificial tooth negative mould, and finished product resin tooth is placed in negative mould, fixed, filled with glue, polished, and then obtained.The production cycle of the method is short, which reduces the burden of patients and also reduces the operation difficulty of doctors.

The utility model relates to the field of false tooth processing equipment, in particular to a plaster model positioning and drilling device which comprises a base, a lifting table, a drill bit and a positioner. The lifting platform is arranged on the upper side of the base and can move up and down; the drill bit is arranged on the base, a through hole is formed in the lifting table, and the drill bit is located in the through hole; the positioner is arranged above the lifting table through a supporting arm and provided with an indicating component, and the indicating component is located over the drill bit and faces the drill bit. According to the device, the positioner is used for accurate positioning, and the indicating component on the positioner can clearly indicate the position of the drill bit, so that the drilling accuracy is improved, and the operation difficulty is reduced.

A muscle movement information-containing intraoral scanning data accurate acquisition method comprises the following steps: S1, collecting a single-frame texture map including an intraoral photo or a dental scanning image, marking an attached gum boundary by using a dental professional, creating a ground truth segmentation map, and performing creation and training of an attached gum area automatic segmentation model after performing variant on U-Net; s2, generating edge line data by utilizing Poi ntNet + + based on gypsum model scanning and artificially described edge lines, and creating and training an automatic edge line generation model; the model aims at automatically generating accurate edge lines for the intraoral scanning data obtained in the step S4 and guiding manufacturing of the movable restoration; s3, dynamically recording three-dimensional form information of intraoral muscles of the user in a motion state; s4, the obtained dynamic data and conventional static oral scanning data are guided by mark points to be elastically registered, and an intraoral data sequence with the complete form is obtained.According to the method, the implementation scheme that oral scanning is used for replacing impression taking can be achieved.

This invention discloses a plaster model processing system and process for casting aluminum alloy impellers, comprising a drying chamber and a mounting frame, with the mounting frame fixedly disposed at the bottom of the drying chamber. This invention relates to the field of plaster model processing technology. The system and process, by incorporating a driving mechanism, an alternating support mechanism, a deep drying mechanism, and a filtration and impurity removal mechanism between the drying chamber and the mounting frame, enable the device to simultaneously and collaboratively dry the plaster parts. This allows the air guide shroud to alternately rotate the support at the bottom of the plaster part while simultaneously blowing hot air for drying, ensuring that the bottom is also dried accordingly. This avoids excessively different drying rates across different drying surfaces of the plaster part, which would hinder further improvement in drying efficiency.

A bio-composite plastering material and a method of making the same are provided. The bio-composite plastering material includes a mixture of sand-silica, Abelmoschus esculentus powder, and multi-walled carbon nanotubes. The bio-composite plastering material has increased compressive strength depending upon the concentration of Abelmoschus esculentus powder and multi-walled carbon nanotubes used. The method of making the bio-composite plastering material includes sieving the sand-silica to produce sand-silica of a uniform particle size, mixing powdered Abelmoschus esculentus powder with the sand-silica to produce a first mixture, mixing water with the first mixture to produce the bio-composite plastering material, and enhancing the bio-composite material by adding multi-walled carbon nanotubes. The bio-composite plastering material may then be plaster cast, such as by pressing the bio-composite plastering material in a hot press and drying the resulting bio-composite material in an oven.

The utility model relates to the technical field of plaster mold fixing, in particular to a plaster mold fixing clamp which comprises a bottom frame, an installation frame, a first clamp body and a second clamp body, a first vertical plate is vertically installed at one end of the upper end face of the installation frame, and a second vertical plate and an installation base are installed at the end, away from the first vertical plate, of the upper end face of the installation frame. A spinning mechanism is mounted at the top end of the mounting seat, a first clamp body is assembled on the upper portion of the side, close to the plaster mold body, of the first vertical plate, a second clamp body is assembled on the upper portion of the side, close to the plaster mold body, of the second vertical plate, and the spinning mechanism comprises a swing rod, a spinning rod, a counter-pull pneumatic spring, a locking spring and a locking piece. The first clamp body and the second clamp body can horizontally clamp the plaster mold body, through the design of the spinning mechanism, pressing can be conducted from top to bottom, then pressure can be applied to the top end of the plaster mold body, accordingly, clamping force in three different directions is formed, and the stability of the plaster mold body can be improved.

The invention relates to the technical field of blank rotating machines, in particular to a four-station blank rotating machine capable of accurately regulating and controlling the rotating angle, a limiting boss body is further fixedly arranged at the center position of the top of a rotating disc, and the limiting boss body is matched with a limiting groove body at the center position of the bottom end of a die holder for use so as to provide a calibration effect on the die holder; the plaster mold is further subjected to auxiliary calibration through an arranged calibration auxiliary assembly. The plaster mold and the rotating disc are connected in a fastened mode through a fastening assembly. Firstly, a limiting groove body in the center position of the bottom end of the mold base is connected with a limiting boss body in the center position of the top end of the rotating disc in an inserted mode, so that the center line of the plaster mold and the center line of the rotating disc are located on the same straight line, and then the outer side walls of the rotating disc and the mold base are wrapped and limited through an arranged stable wrapping ring; therefore, the problem of position deviation during the rotating operation of the two parts is avoided; and then the rotating disc and the die holder are in butt joint and fastened connection through the arranged fastening assembly.

The invention discloses a bionic model system for periodontal surgery training and a preparation method and application thereof, and belongs to the technical field of dental models. The bionic model system comprises a dental model, a periodontal soft tissue substitute arranged on at least one of the inner side and the outer side of the dental model, and an optional supporting seat, the periodontal soft tissue substitute is shaddock peel. The plaster model is used, the plaster model is modified, the pomelo peel is used for replacing gingiva and soft tissue below the gingiva on the model, and the pomelo peel and the model are innovatively combined, so that the training model can completely restore the body positions of a patient and an operator in the actual clinical process, use of an operating microscope and an odontoscope and the hand feeling process mode of incision and suture; and the purpose of simulating professional training is achieved to the maximum extent.

The present invention relates to a plaster air freshener that prevents damage to the outer surface of a plaster model, minimizes the generation of powder resulting from damage to the plaster model, and allows for the convenient injection of a large amount of air freshener. The plaster air freshener comprises a mold cover (10) formed of a synthetic resin material, a plaster model (20) formed on the inner side of the mold cover (10), and an air freshener injector (30) installed on the back side of the plaster model (20).

The invention discloses a simple bonding method for accurate positioning of a bracket, and relates to the technical field of orthodontics, and the simple bonding method specifically comprises the following steps: S1, preparing a dentition plaster model; s2, bracket positioning: precisely positioning the bracket for fixing the appliance on the dentition plaster model; during positioning, a marginal ridge positioning method and a positioning method for finding a clinical dental crown center are adopted to accurately position the bracket position; s3, bonding the bracket; s4, manufacturing a bracket transfer guide plate; s5, cleaning the bracket; s6, treating a dental surface; according to the method, the bracket is pre-positioned and pre-mounted on the dentition plaster model of the patient, and then the bracket is mounted on the dental surface of the patient by using the transfer guide plate, so that visual and tactile restrictions caused by direct operation in the oral cavity of the patient can be greatly reduced; the bracket positioning and mounting precision and bracket mounting efficiency are improved, the treatment time is greatly shortened, and the treatment time of a patient is shortened.

The invention discloses a reinforcing support for a tooth plaster model and a method for preparing the tooth plaster model. The reinforcing support for the tooth plaster model is in a hollow cone shape or a hollow column shape. The bottom of the reinforcing support is in a circular shape or a square shape. The side wall of the reinforcing support comprises a plurality of strip-shaped structures, the strip-shaped structures extend from the bottom of the reinforcing support to the top of the reinforcing support, and reinforcing ribs are arranged among the strip-shaped structures. The whole reinforcing support for the tooth plaster model is in a hollow cone shape or a hollow column shape, and the tensile strength of the support and the compressive strength of plaster can be utilized to form complementation, so that the strength of isolated teeth in the tooth plaster model is enhanced, and the isolated teeth in the tooth plaster model are not prone to displacement, deformation or fracture; the whole reinforcing bracket is conical or columnar, and the bottom of the reinforcing bracket is circular or square, so that the shape of the isolated tooth can be matched with that of the tooth.

A preparation method of a bone ash product relates to the technical field of funeral devices, and comprises the following steps: S1, grinding cremation bone ash by a ball mill, sieving by a 300-mesh sieve, and mixing 300-mesh bone meal with jade porcelain powder and silicate according to a certain proportion to prepare slurry; s2, a plaster mold is adopted for slip casting, a kiln is adopted for low-temperature primary firing for 10 hours at the temperature of 200 DEG C, and a product is taken out and cooled at the normal temperature; s3, brushing a metal coloring material on the product, putting the product into a kiln, calcining at the high temperature of 1200 DEG C for 15 hours, taking out the product, and cooling at normal temperature; and S4, glazing the product, putting the product into the kiln, continuously calcining for 10 hours at the high temperature of 1600 DEG C, reducing the temperature of the kiln to 800 DEG C, calcining for 5 hours, reducing the temperature of the kiln to 300 DEG C, calcining for 2 hours, taking out the product, and cooling to normal temperature. According to the invention, the bone ash is refined into a product, so that the problem that bone ash treatment modes (such as burial, seascattering and the like) are difficult to meet the requirement of retaining souvenirs of departed saints in some families is solved.

The invention discloses a digital protective jaw pad and a preparation method thereof, and the preparation method comprises the following steps: 1, carrying out intraoral three-dimensional scanning to obtain a digital model; step 2, a dynamic occlusion relation is recorded by a digitized face bow, and an inresting jaw position is determined; 3, making an occlusion recording silica gel and plaster model; 4, scanning the plaster model, designing a virtual jaw pad in combination with the intraoral scanning digital model, and performing personalized buffering treatment; and step 5, processing the PMMA solid jaw pad by a CAM technology. Whole-course digital precise manufacturing of the protective jaw pad is achieved, occlusion interference of diseased teeth is avoided through the personalized buffering design, the material biocompatibility is good, wearing is comfortable, traumatic teeth or postoperative teeth are effectively protected, and meanwhile the treatment effect and the patient satisfaction degree are improved by combining patient education.

This invention discloses a 3D-printed prosthesis shaping method, relating to the field of prosthesis manufacturing. The method includes: S1 obtaining reference information and limb information; S2 constructing a reference model and retaining the limb model; S3 refining the reference model to obtain an appearance model; S4 extracting the main body model; S5 adjusting the size of the main body model; S6 3D printing the main body model to obtain a supporting body; S7 3D printing the appearance model to obtain an appearance body; S8 creating a plaster mold of the appearance body; S9 dividing the plaster mold to obtain a sub-mold; S10 placing the supporting body inside the sub-mold; S11 merging and splicing the sub-molds; and S12 injecting a liquid flexible material into the plaster mold, which solidifies to obtain the prosthesis. By obtaining limb information at the location of the prosthesis to be installed and adjusting the reference model based on this information, the method realizes the personalized needs of amputees for prostheses, fundamentally improving the wearing comfort and aesthetics of the prosthesis, and significantly promoting the psychological recovery of confidence in amputees. It also significantly reduces the manufacturing cost and time of the prosthesis.

The invention provides a blood vessel modification balloon dilatation model device which comprises a plaster model, the plaster model is tubular, and the middle of the plaster model is hollow so that a nick balloon can be stuffed into the plaster model; the first connecting part is arranged on the outer side of the plaster model, and a first notch used for containing the plaster model is formed in one side of the first connecting part; the second notch is formed in the first connecting part; and the positioning mechanism is arranged in the second notch so as to fix the gypsum model in the first connecting part. The first connecting part provides a space capable of accommodating a plaster model; a second notch is formed, so that the positioning mechanism can find a proper fixing position, and the stability of the plaster model in the machining process is guaranteed; and through cooperative use of the multiple positioning mechanisms, accurate positioning of multiple fixing points of the plaster model can be achieved, and the fixing stability is further improved.

Stump simulator for medical training purposes, especially for plaster casts or palpation exercises, characterized by an anatomical bone model enclosed by a soft layer of silicone gel or a similar soft material, wherein the external shape and texture of the soft tissue layer corresponds to a real amputation stump of a human extremity.

The utility model discloses a disinfection box for a plaster model, which belongs to the technical field of disinfection boxes and comprises a disinfection box for storing the plaster model, a disinfection cover is arranged at the upper end of the disinfection box, the disinfection box is connected with the disinfection cover in a magnetic attraction mode, and a plurality of ultraviolet lamp tubes which are uniformly distributed are arranged in the disinfection cover. A storage battery for starting the ultraviolet lamp tubes is arranged in the disinfection cover, the disinfection box comprises a storage shell and a storage inner container, the storage inner container is used for placing a plurality of plaster models, and the storage inner container can move upwards to be separated from the interior of the storage shell to be taken out; according to the device, the gypsum models can be disinfected in two different disinfection modes, one disinfection mode is an ultraviolet irradiation mode, the other disinfection mode is a microwave heating mode, a plurality of gypsum models can be synchronously disinfected in batches, a more perfect mode is provided for the disinfection operation of the gypsum models, and meanwhile, the disinfection efficiency is improved. The operation and the carrying are convenient.

When sitting at a chair at school or elsewhere to study with a knee cast on, the weight of the cast cannot be withstood, causing pain in the thigh and numbness in the leg. Therefore, a cast stand that can be attached to a chair was invented. [Solution] This is a plaster cast stand that can be attached to either the left or right side of a four-legged chair 1, and is made up of a main pipe 4 bent downwards and forward, a plaster cast stand plate 5, first fixing means 66, 67 connecting the main pipe 4 and the plaster cast stand plate 5, and second fixing means 77, 78 connecting the main pipe 4 and the chair 1.

The invention provides a plaster bandage shaper for an arm. The plaster bandage shaper comprises a supporting body, a plurality of telescopic devices, a plurality of pressure sensors and an elastic pad. The supporting main body comprises a first main body part and a second main body part, the first main body part and the second main body part are arc-shaped and are connected with each other, the first main body part and the second main body part rotate at the joint so that the supporting main body can be switched between opening and closing, and in the closing state, the first main body part and the second main body part define a cylinder shape. The telescopic devices are located on the inner side face of the supporting body. The pressure sensors correspond to the telescopic devices and are located at the ends, away from the supporting body, of the corresponding telescopic devices. The elastic pad is located on the side, away from the supporting body, of the sensor array and comprises a first pad and a second pad, the first pad is located between the sensor array and the second pad, the first pad is fixed to the pressure sensor array, the second pad is detachably connected with the first pad, and the thickness of the second pad is equal to that of the plaster bandage.

The invention discloses a manufacturing process of a false tooth plaster mold, a false tooth and a manufacturing process thereof.The manufacturing process of the false tooth plaster mold is used for manufacturing a plaster model of the false tooth and comprises the following steps that a false tooth pouring mold is provided, and a cavity of the false tooth pouring mold is used for forming the plaster model of the false tooth; the part, corresponding to the tooth top and / or the deep groove area of the false tooth, of the cavity is brushed with gypsum slurry; filling the cavity with gypsum slurry; and waiting for solidification of the gypsum slurry to obtain the gypsum model. According to the scheme, the flowing and attaching effects of the gypsum slurry in the detail areas are improved through the brushing technology, the technical problem that bubbles are likely to be generated in the gypsum slurry pouring process is solved through the method of filling the detail areas in advance, and therefore the risk that the details of the gypsum model are lost is reduced, and the quality and precision of the finished gypsum model are improved.

The utility model discloses a lower limb fixator with good durability, and particularly relates to the technical field of lower limb fixation, the lower limb fixator comprises a fixing ring, a lower limb fixing auxiliary device is arranged on the outer wall of the fixing ring, the lower limb fixing auxiliary device comprises a positioning installation assembly and a protection assembly, and the protection assembly is arranged on the outer wall of the positioning installation assembly. Compared with the prior art, according to the lower limb fixator with the good durability, after inflation of the bottom protection air bag ring and the anti-collision silica gel air bag set is completed, anti-skid work can be conducted on the outer wall of the fixing ring, after the fixing ring is used, gypsum formed inside the fixing ring can be taken out through simple disassembly, and the inside of the fixing ring is cleaned; and after the interior of the fixing ring is cleaned, the device is reused, the outer wall of the gypsum is protected through the fixing ring, a protection assembly and a positioning installation assembly, the problem that the gypsum is crushed due to intense actions of a patient during use is avoided, the gypsum fixing stability is further enhanced, and the durability of the whole device is improved.

The embodiment of the present disclosure provides an acquisition method of a dental retainer, and relates to the technical field of retainer manufacturing, and comprises the following steps: generating a digital three-dimensional model of a patient's dental arch, and identifying individual characteristics such as maxillary or protruding teeth, presence of deciduous teeth or conical teeth, and occlusal contact points, and the edge height and / or occlusal area thickness of the retainer three-dimensional digital model can be correspondingly personalized adjusted, so as to be 3D printed to obtain a dental retainer. Since the whole process is digitalized, a plaster model is not needed, thereby eliminating the step of trimming and grinding. Since dust pollution is completely eliminated, the manufacturing time is shortened, and the breakage and rework caused by excessive cutting are avoided, and the retainer matched with different needs of patients can be manufactured more efficiently.

The utility model discloses a plaster mould with a tight splicing structure, which relates to the technical field of plaster moulds and comprises a first plaster mould plate, a second plaster mould plate and filling ports, one side of the first plaster mould plate is provided with the second plaster mould plate, the top ends of the second plaster mould plate and the first plaster mould plate are both provided with the filling ports, and the filling ports are connected with the first plaster mould plate and the second plaster mould plate. And a first locking clamp is arranged at one end of the second gypsum template. According to the plaster mold with the tight splicing structure, a rotating hand wheel is rotated, so that a rotating rod can rotate a threaded rod through a bevel gear set, the threaded rod can move a second locking clamp through a connecting sleeve rod, the distance can be adjusted, and then plaster molds of different sizes can be conveniently locked and spliced; and the overturning frame is overturned, so that the overturning frame can drive the protection plate to protect the filling opening, external impurities are prevented from entering the interior, and the plaster mold can have a good protection effect when being used.

The present invention relates to the technical field of centrifugal compressors, and provides a hoop-type closed impeller, comprising: a shroud; an impeller, which is connected to the shroud through a hoop; and a hoop, which comprises: a shroud-side curled edge, which is connected to the shroud; an impeller-side curled edge, which is connected to the impeller; and a curled-edge connecting portion, which connects the shroud-side curled edge and the impeller-side curled edge. All the shroud, the hoop and the impeller of the present invention can be formed by machining, so the accuracy and roughness of the parts will be significantly better than those of traditional plaster die-castings. The strength of the closed impeller is sufficient to withstand the same rotational speed as that of the traditional open impeller, and the efficiency and surge margin are greatly improved compared with the traditional open impeller. In addition, compared with the closed impeller made by plaster die-casting, the efficiency and surge margin will also be significantly improved due to the improved accuracy and roughness.

The special mold comprises a bottom outer mold, two upper outer molds, an injection pipe and a one-way valve, a cavity capable of containing a plaster mold is formed in the top of the bottom outer mold, the two upper outer molds can cover the plaster mold and are oppositely arranged at the top of the bottom outer mold, and the upper outer molds and the bottom outer mold are connected through multiple sets of quick-connection fasteners. An injection pipe is fixedly arranged at the bottom of the bottom outer mold, one end of the injection pipe extends into a cavity of the bottom outer mold, the other end of the injection pipe is located outside the bottom outer mold, and the one-way valve is installed on the injection pipe. The quick-connection fastener comprises a fixing block, a shell and a clamping block, and the fixing block is fixedly connected with the side wall of the bottom outer mold. According to the external mold connecting device, the quick-connection fastener with the fixing block and the clamping block is adopted, the clamping block is pushed through the spring, the clamping block can be clamped on the fixing block through pressure application, when the external mold is installed, the external mold can be connected through the quick-connection fastener without other operations, and the external mold can be prevented from falling off through pressure application.

A composite plastering material and a method of making the same are provided. The composite plastering material includes a mixture of sand-silica and Abelmoschus esculentus powder. The composite plastering material has increased compressive strength depending upon the concentration of Abelmoschus esculentus powder used. The method of making the composite plastering material includes sieving the sand-silica to produce sand-silica of a uniform particle size, mixing powdered Abelmoschus esculentus powder with the sand-silica to produce a first mixture, and mixing water with the first mixture to produce the composite plastering material. Optionally, the method may also include milling the sand-silica prior to sieving and combining the sand-silica with the Abelmoschus esculentus powder. The composite plastering material may then be plaster cast, such as by pressing the composite plastering material in a hot press and drying the resulting composite material in an oven.

The utility model discloses a plaster mould box assembly type hollow floorslab, which relates to the field of hollow floorslabs, and adopts the technical scheme that the plaster mould box assembly type hollow floorslab comprises a stand column and two hollow mould boxes, the two hollow mould boxes are respectively arranged in the middles of the two sides of the stand column, and the two hollow mould boxes are connected with each other through a pull rod. The two hollow mold boxes are pulled in and fixed to the middle of the stand column through the pull rod; and a plurality of steel reinforcement frameworks and concrete are distributed outside the hollow mold box. And the situation that the hollow mold box floats upwards after concrete is poured is avoided, the hollow mold box can be positioned, and the construction quality is improved.

This utility model relates to the field of medical equipment technology, specifically a wound cleaning trolley after plaster cast removal. It includes a trolley base with a support assembly on one side. The support assembly includes a fixing plate, which is fixedly connected to one side of the trolley base. This wound cleaning trolley allows the patient to place their injured leg or hand on it after moving the trolley in front of them. An electric actuator is then activated to adjust the support plate to a suitable height. Depending on the length of the patient's leg or hand, a movable block is moved along a movable column within a groove. When the block reaches the appropriate position, a pin is inserted into the movable block and connected to a fixing hole to ensure stability. The leg or hand is then placed on the placement arc plate. This effectively solves the problem of difficulty in placing and cleaning different lengths of legs and hands, making the process more flexible, convenient, and improving overall practicality.

To provide an automatic molding machine of irregular-shaped ceramics such as a cup with a narrowed mouth and a plate with a polygonal rim.SOLUTION: An automatic molding machine of ceramics comprises: a trowel 11 provided rotatably in a horizontal direction; a plaster mold 12 provided rotatably in the horizontal direction at a lower part in a vertical direction of the trowel 11; a first movement mechanism using a first servo motor 13 for vertically moving the trowel 11; a second movement mechanism using a second servo motor 14 for longitudinally moving the trowel 11; a rotation mechanism using a third servo motor 15 for varying a tilt angle of the trowel 11 vertically in a front view and circumferentially in a side view; an input device; and a calculation processing device.SELECTED DRAWING: Figure 1