31 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.

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.

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 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 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.

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.

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 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.

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

The invention relates to the technical field of automatic grouting systems, in particular to an automatic grouting system. Comprising a circulating dual-channel, a rotary grouting table arranged at one end of the circulating dual-channel and used for grouting in a plaster mold, a blank taking platform arranged at the other end of the circulating dual-channel and used for taking blanks out of the plaster mold, and a slurry discharging platform arranged on the side of the circulating dual-channel and used for pumping slurry out of the plaster mold. The conveying equipment is arranged on the double circulating channels and used for conveying plaster molds to different stations, the storage mechanism is arranged beside the double circulating channels and used for storing the plaster molds, the double circulating channels are arranged in multiple layers, and an electric rail used for supplying power to the conveying equipment is arranged on the upper end face of each double circulating channel. According to the device, the placement table, the connecting rod, the first moving frame and the clamping head are matched with one another to automatically fix or release the plaster mold. And the problem that in the gypsum mold transporting process of carrying equipment, the gypsum mold deviates from the containing table, and consequently a blank is damaged is effectively solved.

The utility model discloses a kind of orthopedics plaster sticking devices for trauma, including the treatment pool with top being open, storage assembly is slidably arranged on the treatment pool, and gypsum bandage is stored in storage assembly, one end of the gypsum bandage is penetrated and extended to the outside of storage assembly, collection box is arranged below the treatment pool, the communication pipe that is communicated with the inner cavity of collection box is installed in the bottom of treatment pool, water storage tank is arranged above the collection box, and water release component is installed in the inner cavity of water storage tank side, the extrusion plate that can be taken and placed is arranged in the treatment pool. The orthopedics plaster sticking device for trauma, water immersion, dehydration are integrated, gypsum plaster sticking bandage can be directly soaked in the device during use, rapid dehydration can be carried out after soaking, and it is convenient for medical staff to shape and position the patient's affected area through gypsum bandage.

The utility model discloses a calcaneal fracture minimally invasive three-dimensional frame internal fixation screw implantation guider which comprises a U-shaped guide frame and a sleeve, the U-shaped guide frame comprises a U-shaped guide frame cross arm, a U-shaped guide frame short arm and a U-shaped guide frame long arm, the U-shaped guide frame short arm and the U-shaped guide frame long arm are arranged in parallel and are both perpendicular to the U-shaped guide frame cross arm, and the sleeve is arranged on the U-shaped guide frame cross arm. A cross arm near-end fixing hole and a cross arm far-end fixing hole which are inclined are formed in a cross arm of the U-shaped guide frame, a short arm fixing hole is formed in a short arm of the U-shaped guide frame in a longitudinal penetrating mode, two sleeve holes are formed in a long arm of the U-shaped guide frame in a transverse penetrating mode, two sleeves are arranged in the sleeve holes in a penetrating mode respectively, and the sleeves are fixedly connected with the long arm of the U-shaped guide frame through screws. By means of the technical scheme, calcaneal fracture reduction of a patient is more sufficient, internal fixation of the three-dimensional frame is reliable, external fixation of gypsum is not needed after operation, functional training can be conducted in the early stage, the patient can walk on the ground in the early stage, and then the beneficial technical effect that the rehabilitation time is greatly shortened is achieved.

A dental articulation plaster model fixator, belonging to the field of denture processing technology, addresses the problems associated with fixing dental articulation plaster models using plaster bonding. It includes a base with two horizontal grooves offset vertically at an angle. Two sets of clamping jaws correspond one-to-one with the two horizontal grooves. Each clamping jaw set includes two sliding jaws, the connecting ends of which are slidably positioned within the corresponding horizontal groove. A connecting screw passes through one of the sliding jaws, one end of which is connected to the other sliding jaw, and the other end is threaded to a locking handle. The clamping ends of the two sliding jaws extend out of the two ends of the horizontal grooves and bend upwards, extending above the base and facing each other. This invention eliminates the shortcomings of traditional dental articulation plaster models that require plaster bonding for fixation.

The embodiment of the invention provides a method for acquiring a tooth retainer, which relates to the technical field of retainer manufacturing and comprises the following steps: generating a digital three-dimensional model of a tooth jaw of a patient, and identifying individual characteristics such as an upper jaw or tooth protrusion condition, a deciduous tooth or conical tooth existence condition and an occlusion contact point according to the digital three-dimensional model; and the edge height and / or the occlusal area thickness of the three-dimensional digital model of the retainer can be correspondingly and individually adjusted, so that 3D printing forming is facilitated, and the tooth retainer is obtained. Due to the fact that the whole process is digitized, a plaster model is not needed, the step of adjusting and grinding is omitted, dust pollution is thoroughly eliminated, the manufacturing time is shortened, breakage and reworking caused by excessive cutting are avoided, and the matched retainers can be manufactured with higher efficiency for patients with different requirements.

A patient skin protection device that ensures protection of the patient's psychology and skin during the removal process of orthopedic plaster casts, comprising a protective plate (1) with a protective plate end (8), a guide plate (2) with a guide plate end (7) and a handle (3), characterized in that it includes a fastening element (5) which is arranged on the guide plate (2) and which, in order to prevent lateral sliding of the guide plate (2), at least partially embeds itself when the guide plate (2) is pressed onto the plaster cast, wherein the protective plate (1) has a thickness that is equal to or less than the thickness of the guide plate (2).

The invention discloses a gypsum and plastic combined ceramic slip casting mold and a slip casting process, and relates to the technical field of slip casting mold equipment and process.The gypsum and plastic combined ceramic slip casting mold comprises a plastic outer mold for plasticity, and an exhaust port is formed in the top of the plastic outer mold for plasticity. Gypsum and plastic are creatively combined into a whole, and the problems that a traditional plaster mold is poor in binding face sealing performance, prone to damage and the like are solved. According to the method, the functions of shaping and water absorption of a plaster mold in an original traditional grouting process are separated, the service life of the mold is prolonged, and the traditional handicraft is upgraded to artificial intelligence production; the plastic outer mold for plasticity, the plastic inner mold for fixing and the gypsum inner mold for water absorption are arranged, and the plastic outer mold for plasticity and the plastic inner mold for fixing are buckled together, so that the sealing performance of the whole mold in the grouting process is improved, and the sealing performance problem of matching of gypsum molds in a traditional grouting process is solved.

1. The name of the design product: dental cast holder. 2. The use of the design product: for dental cast holder. 3. The design features of the design product: the combination of shape and pattern. 4. The picture or photo that best shows the design features: perspective view.

This invention discloses an immersion grouting method in which grout is injected into a plaster mold through a grouting pipe. The grouting pipe extends to the bottom of the plaster mold and is kept below the grout surface. This method minimizes the risk of gas being drawn into the grout, effectively solving the problem of air bubbles on the surface of the blank. The number of air bubbles on the surface of the resulting blank is significantly reduced, and the product quality is improved.

The present disclosure provides a plaster cast shaper for arm, which comprises a supporting body, a plurality of telescopic devices, a plurality of pressure sensors and an elastic pad. The supporting body comprises a first body part and a second body part, which are arc-shaped and connected to each other, and are rotatable at the connection to switch the supporting body between opening and closing, and in the closed state, the first body part and the second body part enclose a cylindrical shape. The telescopic devices are located on the inner side of the supporting body, and the pressure sensors correspond to the telescopic devices respectively and are located at the end of the corresponding telescopic devices away from the supporting body. The elastic pad is located on the side of the sensor array away from the supporting body 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 on the pressure sensor array, and the second pad is detachably connected with the first pad, and the thickness of the second pad is equal to the thickness of the plaster cast.