WO2020194721A1 - 歯科技工用角度調整ステージ装置 - Google Patents
歯科技工用角度調整ステージ装置 Download PDFInfo
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- WO2020194721A1 WO2020194721A1 PCT/JP2019/013820 JP2019013820W WO2020194721A1 WO 2020194721 A1 WO2020194721 A1 WO 2020194721A1 JP 2019013820 W JP2019013820 W JP 2019013820W WO 2020194721 A1 WO2020194721 A1 WO 2020194721A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/04—Measuring instruments specially adapted for dentistry
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/10—Fastening of artificial teeth to denture palates or the like
- A61C13/1003—Fastening of artificial teeth to denture palates or the like by embedding in base material
- A61C13/1013—Arch forms
- A61C13/1016—Methods or apparatus for mounting, holding or positioning a set of teeth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/01—Palates or other bases or supports for the artificial teeth; Making same
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/12—Tools for fastening artificial teeth; Holders, clamps, or stands for artificial teeth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/04—Measuring instruments specially adapted for dentistry
- A61C19/055—Paralleling devices
Definitions
- the present invention relates to an angle adjustment stage device for dental technicians, in particular, an angle adjustment stage device used when designing a removable partial denture hook or a floor to be used as a substitute for a missing tooth.
- FIG. 8 is a perspective view illustrating a state in which the removable partial denture is attached to the plaster model.
- the removable partial denture 33 includes an artificial tooth 34 and a hook 36 that is detachably fitted to a hook tooth 35 adjacent to the removable partial denture 33.
- the target tooth and mucous membrane are molded from the oral cavity of the patient to manufacture the plaster model 37, and then the partial denture 33 is manufactured from the remaining teeth in the plaster model 37.
- the denture 35 is selected, and the denture 36 is designed and manufactured to fit the curved shape of the denture 35.
- the hook 36 includes a wire hook manufactured by bending a metal wire material and a cast hook manufactured by casting an alloy. As shown in FIG. 8B, the hook 36 is connected to the hook leg portion 38 embedded in the partial floor artificial tooth 33 and integrated with the hook leg portion 38, and is in contact with the adjacent surface of the hook tooth 35.
- the hook body portion 39 and the hook arm portion 40 that is connected to the hook body portion 39 and surrounds the hook tooth 35 in the undercut area of the hook tooth 35 (the area below the maximum ridge line (sabayer line) of the tooth). It consists of.
- the hook arm portion 40 is composed of an upper arm portion 40a, a central middle arm portion 40b, and a tip hook tip portion 40c in order from the hook body portion 39.
- the amount of bending of the hook arm portion 40 into the undercut region greatly affects the wearing feeling of the removable partial denture 33, the aesthetics, and the load applied to the hook teeth at the time of mounting.
- the setting of the degree of bending is very important in the design and manufacture of the hook 36, and is one of the most important design items regarding the removable partial denture 33.
- an IBA denture design method as a design method for a wire hook.
- this method as shown in FIG. 9 (A) and (B), set the gypsum model M at the initial setting position (see FIG. 9 (A). Exhibited vertically straight D 1.), after respect plaster model M painted baseline (maximum contoured line) L 1, respectively plaster model M on the buccal side and the lingual side predetermined angle (usually 15 °) is rotated (FIG. 9 (B), see. exhibited vertically straight D 2.), in each case, inclined line on the side surface of ⁇ 35 ( ⁇ form lines) draw L 2.
- a first rotating member is rotatably attached around a horizontal axis to a support column provided on a base, and a second rotating member is provided in an internal space of the first rotating member.
- the rotating member is housed and rotatably attached around an axis perpendicular to the horizontal axis, the first rotating member can be fixed at a desired rotational position with respect to the strut, and the second rotating member is the first. It can be fixed to the rotating member at a desired rotational position, and a universal joint mechanism is provided on the second rotating member to position the center of rotation of the universal joint mechanism on a vertical axis, and the lower end of the support rod is a universal joint.
- Means for connecting to a second rotating member via a mechanism, fixing the stage to the upper end of the support rod, fixing the support rod at a desired inclined position (third fixing means), and the support rod for this desired purpose.
- a means (fourth fixing means) for rotating and fixing by a desired angle around the axis passing through the rotation center of the universal joint mechanism among the horizontal axis or the axis parallel to the horizontal axis from the inclined position of (See Patent Document 1).
- this angle adjustment stage device by reducing the rotating portion and the rotating position fixing portion, it is possible to achieve simplification of the device configuration, reduction of the manufacturing cost of the device, and improvement of the operability of the device to some extent.
- this angle adjustment stage device is still expensive, not easy to maintain, and it takes a long time to get used to the operation of the device. That is, there is still ample room for this angle adjusting device to simplify the device configuration and improve operability.
- an object of the present invention is to provide an angle adjustment stage device having a simpler structure and excellent operability.
- a base a stage arranged above the base and a dental work work being fixed on the base, and a stage provided on the base and the stage are provided.
- the stage support mechanism is provided with a stage support mechanism that supports the tilt angle in an adjustable manner, and the stage support mechanism is projected from the base and magnetically coupled to a base shaft containing a magnet and the tip of the base shaft.
- a rocking body is provided, and the rocking body is arranged in the center of a square substrate, a sphere formed of a ferromagnetic material, and the substrate, passes through the center of the substrate, and extends perpendicularly to the substrate.
- the rocker has a ball holder that is rotatable around a shaft and a first stopper that can fix the ball holder to the substrate at a desired rotation position, and the ball holder holds the ball and the ball.
- the rocker In an arrangement in which the center of the is rotatably and fixedly held at a desired rotational position around the center, the rocker further extends radially outward from the sphere.
- a support rod having a lower surface of the stage connected to the upper end thereof, a lower portion of the sphere projecting from the lower surface of the sphere holder and the lower surface of the substrate, and the rocking body at the lower end of the sphere
- the stage support mechanism is further fitted to the outside of the base shaft and can slide in the vertical direction along the base shaft, which is magnetically coupled to a receiving portion provided at the tip of the base shaft.
- the elevating body and / or a second stopper provided on the base shaft and capable of fixing the elevating body to the base shaft at a desired height is provided, and the upper surface of the elevating body forms a horizontal plane, and the upper surface thereof is said to have a horizontal surface.
- a recess that can accommodate the lower portion of the sphere is opened, a through hole that reaches the lower surface of the elevating body is formed on the bottom surface of the recess, and the through hole has a diameter corresponding to the diameter of the base shaft and that penetrates.
- the base shaft is inserted through the hole, and the rocking body takes a horizontal position when the lifting body is located at the highest point and the upper surface of the lifting body comes into contact with the lower surface of the substrate of the rocking body.
- the elevating body descends from the highest point, the upper surface of the elevating body is separated from the lower surface of the substrate of the rocking body, and any one of the four sides of the substrate is brought into contact with the upper surface of the elevating body.
- a first circular recess is formed in the center of the lower surface of the substrate of the rocking body, and the upper surface of the substrate is reached at the center of the bottom surface of the first circular recess.
- a first circular opening having a diameter larger than the diameter of the sphere is formed, and the sphere holder of the rocking body has a large diameter portion having a diameter larger than the diameter of the first circular opening and the large diameter portion. It has a holder body composed of a small diameter portion having a thickness corresponding to the depth of the first circular opening and a diameter corresponding to the first circular opening, which is coaxially connected to the lower end surface of the first circular opening.
- a second circular recess having a diameter larger than the diameter of the sphere is formed at the center of the upper end surface of the portion, and a second circular opening reaching the lower end surface of the small diameter portion is formed at the center of the bottom surface of the second circular recess.
- the second circular opening has a diameter smaller than the diameter of the sphere, and the sphere holder is further smaller in thickness than the depth of the first circular recess and has an outer diameter of the first. It has an annular member having an inner diameter larger than the diameter of the circular opening of 1 but smaller than the diameter of the first circular recess and having an inner diameter corresponding to the diameter of the second circular opening, and the small diameter portion is the small diameter portion.
- the annular member In a state of being fitted into the first circular opening of the substrate, the annular member is concentrically coupled to the lower end surface of the small diameter portion, and the holder body rotates around the axis extending vertically with respect to the substrate.
- the ball holder is capable of being mounted and further comprises an annular ball holding member having an outer diameter equal to the diameter of the first circular opening and an inner diameter smaller than the diameter of the ball.
- First screw holes penetrating both end faces of the ball holding member are formed at three or more positions spaced apart from each other in the circumferential direction of the holder body, while the bottom surface of the second circular recess of the holder body is formed.
- a second screw hole corresponding to the first screw hole is formed, and the ball holder further has a fixing screw screwed into the first and second screw holes, and the ball is the ball.
- the fixing screw is screwed into the first and second screw holes from the outside of the ball holding member while being sandwiched between the bottom surface of the second circular recess of the holder body and the ball holding member. ..
- a plurality of recesses are formed on the outer peripheral surface of the small diameter portion of the holder body at equal angles, while the inner wall of the first circular opening of the substrate is formed.
- the base shaft is rotatable about an axis
- a flange portion is provided at the lower part of the base shaft
- the angle display mechanism is rotatable around the center of each other. It has a pair of sector plates connected to the tip of one sector plate of the pair of sector plates in the radial direction, or from the one sector plate along the one side edge in the radial direction.
- An extension extending outward is attached to the flange portion of the base shaft so as to be rotatable around a horizontal shaft, and the radius of the one sector plate in the other sector plate of the pair of sector plates.
- the tip of the radial side edge closer to one side edge in the direction, or an extension extending outward from the other fan-shaped plate along the radial side edge, is attached to the side wall of the elevating body and is said to be horizontal. It is possible to swivel around an axis parallel to the axis, and as the elevating body moves up and down, the pair of sector plates rotate around the center of each other in a vertical plane, and the pair of sectors An angle scale corresponding to the inclination angle of the rocking body is provided on the peripheral wall surface of one of the fan-shaped plates, while on the peripheral wall surface of the other fan-shaped plate of the pair of fan-shaped plates. Is marked with a zero point scale.
- the base shaft is fixed to the base
- the angle display mechanism has a pair of fan-shaped plates rotatably connected around the center of each other.
- the tip of one side edge in the radial direction of one of the pair of fan-shaped plates, or an extension portion extending outward from the one fan-shaped plate along the one side edge in the radial direction is attached to the base. Attached and swivel around a horizontal axis, the tip of the radial side edge of the other sector of the pair of sector plates that is closer to the radial one side edge of the one sector plate.
- an extension extending outward along the radial side edge from the other sector plate is attached to the side wall of the elevating body so that it can swivel around an axis parallel to the horizontal axis.
- the pair of fan-shaped plates rotate around the center of each other in a vertical plane, and on the peripheral wall surface of one of the pair of fan-shaped plates.
- an angle scale corresponding to the inclination angle of the rocking body is provided, a zero point scale is provided on the peripheral wall surface of the other sector plate of the pair of sector plates.
- a marking unit provided on the base for making design markings on the dental technician work fixed on the stage.
- the marking unit has a pole projecting from the base and extending vertically, and a pole attached to the pole, extending in the radial direction of the pole and swiveling around the axis of the pole on a plane orthogonal to the pole. It has a possible arm, a pen holder provided at the tip of the arm, and a pen held by the pen holder and extending downward from the pen holder in parallel with the pole.
- the number of parts constituting the angle adjustment stage device is reduced, the device configuration becomes simpler, and the manufacturing cost of the device is significantly reduced.
- the device can be miniaturized and the maintenance of the device becomes easier. Furthermore, the number of parts to be operated for adjusting the angle of the stage is reduced, and the operation method becomes easier. Therefore, even a beginner can master the device in a short period of time.
- Is a view for explaining the method for designing a line hook by IBA denture design method (A) is a side view of the plaster model buccal side, (B) is a cross section along the D 1 line in (A) It is a figure, (C) is a plan view of a plaster model.
- FIG. 1 is a perspective view of an angle adjusting stage device for dental technicians according to an embodiment of the present invention
- FIG. 2 is a vertical sectional view of a stage support mechanism of the angle adjusting stage device of FIG. 3 is an exploded perspective view of the rocking body of the angle adjusting stage device of FIG. 1
- FIG. 4 is a side view of the angle adjusting stage device of FIG. 1.
- the angle adjusting stage device of the present invention is placed on the base 1 and the stage 2 and the base 1 on which the dental technician work W is fixed. It is provided with a stage support mechanism 3 that is provided and supports the stage 2 so that its inclination angle can be adjusted.
- the base 1 has a rectangular flat plate shape, and rubber legs 1a are attached to the four corners of the lower surface of the base 1.
- the stage support mechanism 3 has a base shaft 4 that is projected from the base base 1 via a thrust bearing 5 and is rotatable about an axis.
- a magnet 6 is built in the base shaft 4, and the upper end surface of the magnet 6 is exposed on the bottom surface of a receiving portion 4a formed at the tip of the base shaft 4 to receive a sphere 9 (described later). Further, a flange portion 4b is provided below the base shaft 4.
- the stage support mechanism 3 also has a rocking body 7 magnetically coupled to the tip (receiving portion 4a) of the base shaft 4.
- the rocking body 7 is arranged around a square substrate 8, a sphere 9 formed of a ferromagnet, and an axis Z that is arranged in the center of the substrate 8 and extends perpendicularly to the substrate 8 through the center of the substrate 8. It has a rotatable ball holder 10.
- a first circular recess 8b is formed in the center of the lower surface of the substrate 8, and the center of the first circular recess 8b is from the diameter of the sphere 9 reaching the upper surface of the substrate 8.
- a first circular opening 8a having a large diameter is formed.
- the ball holder 10 has a large diameter portion 11 having a diameter larger than the diameter of the first circular opening 8a and a first circular opening 8a coaxially connected to the lower end surface of the large diameter portion 11. It has a holder body 13 composed of a small diameter portion 12 having a thickness corresponding to a depth and a diameter corresponding to a first circular opening 8a.
- a second circular recess 11a having a diameter larger than the diameter of the sphere 9 is formed at the center of the upper end surface of the large diameter portion 11, and a second circular recess 11a reaching the lower end surface of the small diameter portion 12 on the bottom surface of the second circular recess 11a.
- a circular opening 12a is formed.
- the second circular opening 12a has a diameter smaller than the diameter of the sphere 9.
- the ball holder 10 also has a thickness smaller than the depth of the first circular recess 8b and an outer diameter larger than the diameter of the first circular opening 8a, but smaller than the diameter of the first circular recess 8b. It has an annular member 14 whose inner diameter corresponds to the diameter of the second circular opening 12a.
- the annular member 14 is concentrically screwed to the lower end surface of the small diameter portion 12, and the holder body 13 is attached to the substrate. It is rotatably mounted around the axis Z relative to 8.
- a plurality of (four in this embodiment) recesses 12b are formed on the outer peripheral surface of the small diameter portion 12 at equal angular distances. Further, a radial hole (not shown) extending radially outward from the axis Z of the substrate 8 is formed at a position corresponding to the recess 12b of the small diameter portion 12 on the inner wall of the first circular opening 8a of the substrate 8. Has been done.
- a ball plunger 15 is arranged in the hole in the radial direction and is always elastically urged toward the outer peripheral surface of the small diameter portion 12.
- the ball plunger 15 constitutes a first stopper capable of fixing the ball holder 10 to the substrate 8 of the rocking body 7 at a desired rotational position.
- the configuration of the first stopper is not limited to this embodiment.
- the ball plunger 15 engages with the recess 12b of the small diameter portion 12 at a position rotated by 90 degrees, but the ball plunger 15 engages with the recess 12b at a position of one rotation to the stage 2.
- the reference position of the fixed dental technician work W is defined (this will be described later).
- the ball holder 10 also has an annular ball holding member 16 having an outer diameter corresponding to the diameter of the first circular opening 8a and having an inner diameter smaller than the diameter of the ball 9.
- First screw holes 17 penetrating both end faces of the ball holding member 16 are formed at three or more positions spaced apart from each other in the circumferential direction of the ball holding member 16, while the bottom surface of the circular recess 11a of the holder body 13 is formed. Is formed with a second screw hole 18 corresponding to the first screw hole 17.
- the ball holder 10 further has fixing screws 19 that are screwed into the first and second screw holes 17 and 18.
- the sphere 9 is arranged so as to be located on an axis Z in which the center of the sphere 9 extends vertically, is sandwiched between the bottom surface of the circular recess 11a of the holder body 13 and the sphere holding member 16, and the lower portion of the sphere 9 is the sphere holder 10.
- the fixing screw 19 is screwed into the first and second screw holes 17 and 18 from the outside of the ball holding member 16 in a state of protruding from the lower surface and the lower surface of the substrate 8.
- the sphere 9 becomes rotatable in a state of being magnetically coupled to the receiving portion 4a, and by tightening the fixing screw 19, the sphere 9 becomes the second circular shape of the holder body 13. It is fixed between the bottom surface of the recess 12a and the ball holding member 16.
- the rocking body 7 further has a support rod 20 extending outward in the radial direction from the sphere 9.
- the lower surface of the stage 2 is connected to the tip of the support rod 20.
- the rocking body 7 is magnetically coupled to a receiving portion 4a (magnet 6) at the tip of the base shaft 4 at the lower end of the sphere 9.
- the magnet 6 has a magnetic force that generates a magnetic coupling force having a magnitude capable of maintaining the positional relationship of the sphere 9 with respect to the receiving portion 4a unless an external force of a certain degree or more is applied.
- the stage support mechanism also includes an elevating body 21 that is fitted on the outside of the base shaft 4 and can slide in the vertical direction along the base shaft 4.
- a set collar 22 having an inner diameter corresponding to the through hole 21b is attached to the lower surface of the elevating body 21, and the base shaft 4 penetrates the through hole 21b and the set collar 22. Then, by loosening the tightening screw 22a of the set collar 22, the elevating body 21 can slide along the base shaft 4, and by tightening the tightening screw 22a, the elevating body 21 has a desired height with respect to the base shaft 4. Is fixed at.
- the rocking body 7 takes a horizontal position when the lifting body 21 is located at the highest point and the upper surface of the lifting body 21 comes into contact with the lower surface of the substrate 8 of the rocking body 7 (see FIG. 2). Is lowered from the highest point, the upper surface of the elevating body 21 is separated from the lower surface of the substrate 8 of the rocking body 7, and when any one of the four sides of the substrate 8 is brought into contact with the upper surface of the elevating body 21, it is inclined. It is designed to take a position (see FIG. 4).
- the axis Z coincides with the vertical axis (the axis perpendicular to the upper surface of the elevating body 21) (see FIG. 2), and at this time, by loosening the fixing screw 19, the fixing screw 19 is loosened.
- the stage 2 (support rod 20) can be tilted freely via the ball 9, and the stage 2 (support rod 20) can be fixed at a desired tilted position by tightening the fixing screw 19.
- the stage 2 (support rod 20) passes through the center of the sphere 9 and is on the vertical axis. It rotates clockwise or counterclockwise by the tilt angle of the rocking body 7 around one of two horizontal axes (XY axes) that are orthogonal to each other.
- the angle adjustment stage device of the present invention further includes an angle display mechanism 23 that displays the tilt angle at the tilt position of the rocking body 7 according to the height of the elevating body 21.
- the angle display mechanism 23 has a pair of fan-shaped plates 24, 25 rotatably connected to each other around the center.
- One of the pair of fan-shaped plates 24, 25 has an extension portion 24b extending outward from the fan-shaped plate 24 along one side edge 24a in the radial direction, and the pair of fan-shaped plates 24, 25
- the other sector plate 25 has an extension portion 25b extending outward from the sector plate 25 along the radial side edge 25a closer to the radial one side edge 24a of the sector plate 24.
- the tip of the extension portion 24b of the fan-shaped plate 24 is rotatably attached around the mounting shaft 26 extending horizontally in the radial direction from the peripheral wall of the flange portion 4b of the base shaft 4, and the extension portion 25b of the fan-shaped plate 25 is attached.
- the pair of fan-shaped plates 24, 25 rotate around the center (connection point) of each other in the vertical plane as the elevating body 21 moves up and down.
- the angle scale S 1 corresponding to the inclination angle of the oscillator 7 on the peripheral wall of the fan-shaped plate 24 is attached, on the peripheral wall surface of the fan-shaped plate 25, the zero point scale S 2 is attached.
- the angle scale S 1 is prepared in advance as follows. First, the elevating member 21 is fixed to the highest point (the oscillator 7 takes the horizontal position), zero scale to the point that matches the zero point scale S 2 at an angle scale S 1 is subjected. Then, while changing the height of the lifting member 21, in each case, the measured inclination angle of the inclined position of the substrate 8 of the oscillator 7, the the point coincident to the zero point scale S 2 at that time angle scale S 1 The measurement angle is attached.
- the elevating body 21 is fixed at a height at which the angle indicated by the zero point scale S 2 becomes a desired angle, and then one of the four sides of the substrate 8 of the rocking body 7 abuts on the upper surface of the elevating body 21. Be urged.
- the stage 2 (support rod 20) is clockwise or counterclockwise around one of two horizontal axes (XY axes) that pass through the center of the sphere 9 and are orthogonal to each other on the vertical axis. It is rotated clockwise by the desired angle.
- the pair of fan-shaped plates 24 and 25 are provided with the extension portions 24b and 25b, respectively, but the pair of fan-shaped plates 24 and 25 are provided with the extension portions 24b and 25b respectively in the radial direction.
- the tip of the side edge 24a and the tip of the radial side edge 25a they may be rotatably mounted around the relevant mounting shafts 26, 27.
- FIG. 5 is a perspective view showing a state in which the dental technician work W is fixed to the stage 2.
- the stage 2 has a flat plate shape, includes holes 2a arranged at equal intervals in the longitudinal direction and the width direction thereof, and includes a pair of receiving pins 2b and 2b and a tightening screw 2d.
- the tightening pin 2c is selectively fitted into any of these holes 2a. Then, the dental technician work W is set on the stage 2 by being tightened and fixed between the pair of receiving pins 2b and 2b and the tightening screw 2d.
- a marking unit 28 for making design markings on the dental technician work W fixed on the stage 2 is further provided.
- the marking unit 28 has a pole 29 projecting from the base 1 and extending in the vertical direction, and a pole 29 attached to the pole 29 so as to extend in the radial direction of the pole 29 and to have the axis of the pole 29 on a plane orthogonal to the pole 29. It has an arm 30 that can swivel around, a pen holder 31 provided at the tip of the arm 30, and a pen 32 that is held by the pen holder 31 and extends downward from the pen holder 31 in parallel with the pole 29.
- the gypsum model is assumed as the dental technician work W for the purpose of using the angle adjustment stage device for the design of the hook and the denture base, and therefore, the saver line is marked on the gypsum model.
- a marking unit 28 is provided for this purpose, the dental technician work W is not limited to the plaster model. Then, when the dental technician work W should be cut or polished, an appropriate cutting unit or polishing unit is provided instead of the marking unit 28.
- the angle adjustment stage device of the present invention can also be used for installation of attachments, fabrication of implant stents, and the like.
- the plaster model is fixed to the stage 2 as a dental technician work W.
- the ball plunger 15 of the substrate 8 of the rocking body engages with the recess 12b of the ball holder 10, and the gypsum model W is arranged at the reference position (shown in FIG. 9C).
- the elevating body 21 is fixed at a height (highest point) at which the zero point scale S 2 of the angle display mechanism 23 coincides with the zero point of the angle scale S 1 .
- the stage 2 (plaster model W) is tilted to the initial setting position while observing the balance between the left and right teeth of the plaster model, and then the fixing screw 19 is tightened. , The stage 2 is fixed at the initial setting position.
- the marking unit 28 sets the baseline (maximum rich line) on the plaster model W. Draw (L 1 in FIG. 9 (A)).
- the tightening screw 22a of the set collar 22 is loosened, the elevating body 21 is lowered until the zero point scale S 2 of the angle display mechanism 23 coincides with 15 degrees of the angle scale S 1 , and then the tightening screw 22a is tightened again.
- the elevating body 21 is fixed at that height.
- the rocking body 7 is tilted to tilt the stage 2 to the left and right of the gypsum model W (rotated clockwise and counterclockwise with respect to the X axis of FIG. 9C), and the stage is rotated each time. 2.
- the pen 32 is used to incline the gypsum model W on the lingual side and the buccal side (the outer line of the hook). (L 2 in FIG. 9 (A)).
- the method of changing (fine-tuning) the initial setting position is as follows. (1) When making a change (fine adjustment) around the X-axis or Y-axis of FIG. 9 (C) Loosen the tightening screw 22a of the set collar 22 to lower the elevating body 21 and watch the angle display mechanism 23. Tighten the tightening screw 22a at a desired angle. After that, the fixing screw 19 is loosened. As a result, the fixation between the rocking body 7 and the sphere 9 is released, but since the sphere 9 supporting the stage 2 is magnetically coupled to the magnet 6 of the base shaft 4, the inclination of the stage 2 does not change.
- the number of parts constituting the device is reduced, the device configuration becomes simpler, and the manufacturing cost of the device is significantly reduced as compared with the conventional angle adjustment stage device.
- the device can be miniaturized, and the maintenance of the device becomes easier.
- the number of parts to be operated for adjusting the angle of the stage 2 is reduced, and the operation method becomes very easy. Therefore, even a beginner can master the device in a short period of time.
- FIG. 6 is a vertical sectional view of the stage support mechanism of the angle adjustment stage device for dental technicians according to another embodiment of the present invention
- FIG. 7 is a side view of the angle adjustment stage device of FIG.
- the embodiments shown in FIGS. 6 and 7 differ only from the embodiments of FIGS. 1 to 5 in the mounting method of the base shaft to the base and the mounting position of the angle display mechanism. Therefore, in FIGS. 6 and 7, the same components as those shown in FIGS. 1 to 5 are assigned the same number, and detailed description thereof will be omitted below.
- the base shaft 4' is fixed to the base 1, does not rotate about the shaft, and does not have a flange portion.
- a magnet 6 is built in the base shaft 4', and the upper end surface of the magnet 6 is exposed on the bottom surface of the receiving portion 4a'which receives the sphere 9 formed at the tip of the base shaft 4'.
- the tip of the extension portion 25b of the fan-shaped plate 25 of the angle display mechanism 23 is rotatably attached to the mounting shaft 27 of the elevating body 21 around the axis, and the tip of the extension portion 24b of the fan-shaped plate 24 is a base. It is rotatably mounted around a mounting shaft 26'fixed to the side surface of 1 and parallel to the mounting shaft 27. As a result, as the elevating body 21 moves up and down, the pair of fan-shaped plates 24 and 25 rotate around their centers (connecting points) in the vertical plane.
- the rotation around the vertical axis at the initial setting position of the stage 2 integrally axes the stage 2 and the rocking body 7 while keeping the lower surface of the substrate 8 of the rocking body 7 in contact with the upper surface of the elevating body 21. It is done by rotating around Z. Further, the rotation around the vertical axis at the inclined position of the stage 2 keeps the corresponding side of the substrate 8 of the rocking body 7 in contact with the upper surface of the elevating body 21, and the stage 2 and the rocking body 7 are integrally connected to the base shaft 4'. It is made by turning the receiving portion 4a'of the above as a fulcrum.
- the configuration of the present invention has been described above based on the preferred examples, the configuration of the present invention is not limited to the above examples, and is within the scope of the configurations described by those skilled in the art in the claims of the present application. It goes without saying that various modifications can be devised.
- the sphere holder 10 is arranged in the center of the substrate 8 and is rotatable around an axis Z that passes through the center of the substrate 8 and extends perpendicularly to the substrate 8, so that the sphere 9 is pivoted by the center of the sphere 9.
- Any configuration may be provided as long as it is arranged on Z and is rotatably held around the center and fixed at a desired rotation position.
- the angle display mechanism 23 may have any configuration as long as it displays the tilt angle at the tilt position of the rocking body 7 according to the height of the elevating body 21.
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Abstract
Description
図8(A)および(B)に示すように、部分床義歯33は、人工歯34と、部分床義歯33に隣接する鉤歯35に着脱自在に嵌合する鉤36を備えている。
図8(B)に示すように、鉤36は、部分床義歯33に埋め込まれてこれと一体化される鉤脚部38と、鉤脚部38に接続し、鉤歯35の隣接面に接する鉤体部39と、鉤体部39に接続し、鉤歯35のアンダーカットの領域(歯牙の最大豊隆線(サベイヤーライン)の下側の領域)で鉤歯35を取り巻く鉤腕部40とからなっている。また、鉤腕部40は、鉤体部39から近い順に、上腕部40aと、中央の中腕部40bと、先端の鉤尖部40cとから構成されている。
この方法によれば、図9(A)および(B)に示すように、石膏模型Mを初期設定位置に設定し(図9(A)参照。垂直方向を直線D1で示した。)、石膏模型Mに対しベースライン(最大豊隆線)L1を描いた後、石膏模型Mを頬側側および舌側側にそれぞれ所定の角度(通常は15°)回転させて(図9(B)参照。垂直方向を直線D2で示した。)、その都度、鉤歯35の側面に傾斜線(鉤外形線)L2を描く。そして、ベースラインと鉤外形線を対照しつつ、これらのラインの舌側側と頬側側におけるバランスを見て、バランスが悪い場合には、石膏模型Mの初期設定位置を変更(微調整)し、改めて鉤外形線を描く。そして、この設計法では、鉤腕部の全腕(鉤尖部、中腕部および上腕部)がアンダーカット領域に位置するように設計がなされる。
つまり、この角度調整装置には、装置構成を単純化し、また操作性を向上させる余地がまだ十分にある。
さらには、ステージの角度調整のために操作すべき個所も減少し、また、その操作の仕方もより簡単になる。そのため、初心者であっても、短期間のうちに装置を使いこなせるようになる。
図1は、本発明の1実施例による歯科技工用角度調整ステージ装置の斜視図であり、図2は、図1の角度調整ステージ装置のステージ支持機構の縦断面図である。また、図3は、図1の角度調整ステージ装置の揺動体の分解斜視図であり、図4は、図1の角度調整ステージ装置の側面図である。
基軸4には磁石6が内蔵され、磁石6の上端面が、基軸4の先端に形成された、球9(後述する)を受ける受け部4aの底面に露出している。
また、基軸4の下部にはフランジ部4bが設けられている。
揺動体7は、正方形の基板8と、強磁性体から形成された球9と、基板8の中央に配置されて、基板8の中心を通り基板8に対して垂直にのびる軸Zのまわりに回転可能とされた球ホルダー10を有している。
球ホルダー10は、この実施例では、第1の円形開口8aの径よりも大きい径を有する大径部分11と、大径部分11の下端面に同軸に接続する、第1の円形開口8aの深さに対応する厚さおよび第1の円形開口8aに対応する径を有する小径部分12からなるホルダー本体13を有している。
ボールプランジャー15は、球ホルダー10を揺動体7の基板8に対し所望の回転位置に固定し得る第1のストッパーを構成する。
なお、第1のストッパーの構成はこの実施例に限定されない。
球押さえ部材16の周方向に間隔をあけた3つ以上の位置に、球押さえ部材16の両端面を貫通する第1のネジ穴17が形成される一方、ホルダー本体13の円形凹部11aの底面には第1のネジ穴17に対応する第2のネジ穴18が形成されている。
球9が、球9の中心が垂直にのびる軸Z上に位置する配置で、ホルダー本体13の円形凹部11aの底面および球押さえ部材16間に挟持され、かつ球9の下部が球ホルダー10の下面および基板8の下面から突出した状態で、固定ネジ19が球押さえ部材16の外側から第1および第2のネジ穴17、18に螺合している。
この場合、磁石6は、一定程度以上の外力が加えられない限り、球9の受け部4aに対する位置関係を維持し得る大きさの磁気的結合力を生じさせる磁力を有している。
上部21cの上面は水平面をなし、上面に球9の下部(基板8の下面および球ホルダー10の下面から突出する部分)を収容可能な凹部21aが開口し、凹部21aの底面には昇降体21の下面に達する貫通孔21bが形成されている。貫通孔21bは基軸4の径に対応する径を有している。
そして、セットカラー22の締め付けネジ22aが緩められることによって、昇降体21は基軸4に沿ってスライド運動可能となり、締め付けネジ22aが締められることによって、昇降体21が基軸4に対し所望の高さにおいて固定される。
なお、第2のストッパーの構成はこの実施例に限定されない。
一対の扇形板24、25のうちの一方の扇形板24は、扇形板24から半径方向一側縁24aに沿って外向きにのびる延長部24bを有し、また、一対の扇形板24、25のうちの他方の扇形板25は、扇形板25から、扇形板24の半径方向一側縁24aに近い方の半径方向側縁25aに沿って外向きにのびる延長部25bを有している。
それによって、昇降体21の昇降に伴って、一対の扇形板24、25が垂直面内において互いに中心(連結点)のまわりに回転する。
角度目盛S1は次のようにして予め作製されている。
まず、昇降体21が最高点に固定され(揺動体7は水平位置をとる)、角度目盛S1におけるゼロ点目盛S2に一致する点にゼロ目盛が付される。次いで、昇降体21の高さを変えながら、その都度、揺動体7の基板8の傾斜位置での傾斜角度が測定され、そのとき角度目盛S1におけるゼロ点目盛S2に一致する点に当該測定角度が付される。
図5に示すように、ステージ2は、平板状をなし、その長手方向および幅方向にそれぞれ等間隔に配置された穴2aを備え、一対の受けピン2b、2bと、締め付けネジ2dを備えた締め付け用ピン2cが、これらの穴2aのいずれかに選択的に嵌め込まれるようになっている。
そして、歯科技工用ワークWは、一対の受けピン2b、2bおよび締め付けネジ2d間に締め付け固定されることによってステージ2上にセットされる。
印記ユニット28は、基台1に突設されて垂直方向にのびるポール29と、ポール29に取り付けられて、ポール29の径方向にのびるとともに、ポール29に直交する面上においてポール29の軸のまわりに旋回可能なアーム30と、アーム30の先端に設けられたペンホルダー31と、ペンホルダー31に保持され、ペンホルダー31から下向きにポール29に平行にのびるペン32とを有している。
本発明の角度調整ステージ装置は、アタッチメントの設置や、インプラントのステントの製作等にも使用され得る。
例えば、部分床義歯製作用の石膏模型にサベイヤーラインを印記する場合には、歯科技工用ワークWとして石膏模型をステージ2に固定する。このとき、揺動体の基板8のボールプランジャー15が球ホルダー10の凹部12bと係合し、石膏模型Wが基準位置(図9(C)に示す)に配置される。
次いで、昇降体21を、角度表示機構23のゼロ点目盛S2が角度目盛S1のゼロ点に一致する高さ(最高点)で固定する。
(1)変更(微調整)を図9(C)のX軸またはY軸のまわりに行う場合
セットカラー22の締め付けネジ22aを緩めて昇降体21を下降させ、角度表示機構23を見ながら、所望の角度で締め付けネジ22aを締める。
その後、固定ネジ19を緩める。それによって、揺動体7および球9間の固定が解除されるが、ステージ2を支持する球9は基軸4の磁石6に磁気的に結合されているので、ステージ2の傾きは変化しない。
ステージ2が初期設定位置に設定された状態で、球ホルダー10をα軸がX軸またはY軸に一致するまで回転させる。その後は、上記(1)と同様に操作することによって変更(微調整)が完了する。
加えて、ステージ2の角度調整のために操作すべき個所も減少し、また、その操作の仕方も非常に簡単になる。そのため、初心者であっても、短期間のうちに装置を使いこなせるようになる。
図6および図7に示した実施例は、図1~図5の実施例と、基軸の基台に対する取付の仕方と、角度表示機構の取付位置とが異なるだけである。よって、図6および図7中、図1~図5に示したものと同じ構成要素には同一番号を付し、以下では、それらの詳細な説明を省略する。
基軸4’には磁石6が内蔵され、磁石6の上端面が、基軸4’の先端に形成された、球9を受ける受け部4a’の底面に露出している。
それによって、昇降体21の昇降に伴い、一対の扇形板24、25が垂直面内において互いに中心(連結点)のまわりに回転する。
また、ステージ2の傾斜位置における垂直軸まわりの回転が、揺動体7の基板8の該当する一辺を昇降体21の上面に接触させたままで、ステージ2および揺動体7を一体的に基軸4’の受け部4a’を支点として旋回させることによってなされる。
例えば、球ホルダー10は、基板8の中央に配置されて、基板8の中心を通り基板8に対して垂直にのびる軸Zのまわりに回転可能とされ、球9を、球9の中心が軸Z上にある配置で、当該中心のまわりに回転可能にかつ所望の回転位置に固定可能に保持するものであれば、どのような構成を有していてもよい。
また、例えば、角度表示機構23は、昇降体21の高さに応じた揺動体7の傾斜位置での傾斜角度を表示するものであれば、どのような構成を有していてもよい。
1a ゴム脚
2 ステージ
2a 穴
2b 受けピン
2c 締め付け用ピン
3 ステージ支持機構
4、4’ 基軸
4a、4a’ 受け部
4b フランジ部
5 スラスト軸受
6 磁石
7 揺動体
8 基板
8a 第1の円形開口
8b 第1の円形凹部
9 球
10 球ホルダー
11 大径部分
11a 第2の円形凹部
12 小径部分
12a 第2の円形開口
12b 凹部
13 ホルダー本体
14 環状部材
15 ボールプランジャー(第1のストッパー)
16 球押さえ部材
17 第1のネジ穴
18 第2のネジ穴
19 固定ネジ
20 支持ロッド
21 昇降体
21a 凹部
21b 貫通孔
21c 上部
21d 下部
22 セットカラー(第2のストッパー)
22a 締め付けネジ
23 角度表示機構
24 扇形板
24a 半径方向一側縁
24b 延長部
25 扇形板
25a 半径方向側縁
25b 延長部
26、26’、27 取付軸
28 印記ユニット
29 ポール
30 アーム
31 ペンホルダー
32 ペン
33 部分床義歯
34 人工歯
35 鉤歯
36 鉤
37 石膏模型
38 鉤脚部
39 鉤体部
40 鉤腕部
40a 上腕部
40b 中腕部
40c 鉤尖部
D1 初期設定方向
D2 傾斜方向
L1 ベースライン(最大豊隆線)
L2 傾斜線
M 石膏模型
S1 角度目盛
S2 ゼロ点目盛
W 歯科技工用ワーク
Z 垂直にのびる軸
Claims (6)
- 基台と、
前記基台の上方に配置され、その上に歯科技工用ワークが固定されるステージと、
前記基台に設けられ、前記ステージを、傾斜角度を調整可能に支持するステージ支持機構と、を備え、
前記ステージ支持機構は、
前記基台に突設され、磁石が内蔵された基軸と、
前記基軸の先端に磁気的に結合された揺動体と、を備え、
前記揺動体は、
正方形の基板と、
強磁性体から形成された球と、
前記基板の中央に配置されて、前記基板の中心を通り前記基板に対して垂直にのびる軸のまわりに回転可能とされた球ホルダーと、
前記球ホルダーを前記基板に対し所望の回転位置において固定し得る第1のストッパーと、を有し、
前記球ホルダーは、前記球を、前記球の中心が前記垂直にのびる軸上にある配置で、当該中心のまわりに回転可能にかつ所望の回転位置に固定可能に保持し、
前記揺動体は、さらに、
前記球から半径方向外向きにのび、上端に前記ステージの下面が連結された支持ロッドを有し、
前記球の下部が前記球ホルダーの下面および前記基板の下面から突出していて、前記揺動体が、前記球の下端において、前記基軸の先端に設けられた受け部に磁気的に結合されており、前記ステージ支持機構は、さらに、
前記基軸の外側に嵌め込まれ、前記基軸に沿って上下方向にスライド運動し得る昇降体と、
前記昇降体および/または前記基軸に設けられ、前記昇降体を前記基軸に対し所望の高さにおいて固定し得る第2のストッパーと、を備え、
前記昇降体の上面は水平面をなし、前記上面に前記球の前記下部を収容可能な凹部が開口し、前記凹部の底面には前記昇降体の下面に達する貫通孔が形成され、前記貫通孔は前記基軸の径に対応する径を有し、前記貫通孔に前記基軸が挿通されており、
前記揺動体は、前記昇降体が最高点に位置して前記昇降体の上面が前記揺動体の前記基板の下面に接触するとき、水平位置をとるが、前記昇降体が前記最高点から下降して前記昇降体の上面が前記揺動体の前記基板の下面から離間し、前記基板の四辺のうちのいずれか一辺が前記昇降体の上面に当接せしめられたとき、傾斜位置をとるようになっており、さらに、
前記昇降体の高さに応じた前記揺動体の前記傾斜位置での傾斜角度を表示する角度表示機構を備えたものであることを特徴とする歯科技工用角度調整ステージ装置。 - 前記揺動体の前記基板の下面の中央に第1の円形凹部が形成され、前記第1の円形凹部の底面の中心には、前記基板の上面に達する、前記球の直径よりも大きい径の第1の円形開口が形成され、
前記揺動体の前記球ホルダーは、
前記第1の円形開口の径よりも大きい径を有する大径部分と、前記大径部分の下端面に同軸に接続する、前記第1の円形開口の深さに対応する厚さおよび前記第1の円形開口に対応する径を有する小径部分とからなるホルダー本体を有し、
前記大径部分の上端面の中心に前記球の直径よりも大きい径の第2の円形凹部が形成され、前記第2の円形凹部の底面の中心には前記小径部分の下端面に達する第2の円形開口が形成され、前記第2の円形開口は前記球の直径よりも小さい径を有し、
前記球ホルダーは、さらに、厚さが前記第1の円形凹部の深さよりも小さく、外径が前記第1の円形開口の径よりも大きいが、前記第1の円形凹部の径よりも小さく、内径が前記第2の円形開口の径に対応する内径を有する環状部材を有し、
前記小径部分が前記基板の前記第1の円形開口に嵌め込まれた状態で、前記小径部分の下端面に前記環状部材が同心的に結合されて、前記ホルダー本体が前記基板に対し前記垂にのびる軸のまわりに回転可能に取り付けられており、
前記球ホルダーは、さらに、
外径が前記第1の円形開口の径に等しく、内径が前記球の直径よりも小さい環状の球押さえ部材を有し、
前記球押さえ部材の周方向に間隔をあけた3つ以上の位置に、前記球押さえ部材の両端面を貫通する第1のネジ穴が形成される一方、前記ホルダー本体の前記第2の円形凹部の底面における前記第1のネジ穴に対応する第2のネジ穴が形成されており、
前記球ホルダーは、さらに、
前記第1および第2のネジ穴に螺合する固定ネジを有し、
前記球が、前記ホルダー本体の前記第2の円形凹部の底面および前記球押さえ部材間に挟持された状態で、前記固定ネジが前記球押さえ部材の外側から前記第1および第2のネジ穴に螺合していることを特徴とする請求項1に記載の歯科技工用角度調整ステージ装置。 - 前記ホルダー本体の前記小径部分の外周面に、複数の凹部が等角距離をおいて形成される一方、前記基板の前記第1の円形開口の内壁における前記小径部分の凹部に対応する位置には、前記基板の前記垂直にのびる軸から径方向外向きにのびる少なくとも1つの半径方向の穴が形成され、前記第1のストッパーが、前記半径方向の穴内に取り付けられるとともに、常時前記小径部分の外周面に向けて弾性付勢され、前記小径部分の凹部に係合し得るボールプランジャからなっていることを特徴とする請求項2に記載の歯科技工用角度調整ステージ装置。
- 前記基軸が軸回りに回転可能になっていて、前記基軸の下部にフランジ部が設けられ、
前記角度表示機構は、互いに中心のまわりに回転自在に連結された一対の扇形板を有し、
前記一対の扇形板のうちの一方の扇形板の半径方向一側縁の先端部、または前記一方の扇形板から前記半径方向一側縁に沿って外向きにのびる延長部が、前記基軸の前記フランジ部に取り付けられて水平な軸のまわりに旋回可能とされ、
前記一対の扇形板のうちの他方の扇形板における前記一方の扇形板の前記半径方向一側縁に近い方の半径方向側縁の先端部、または前記他方の扇形板から前記半径方向側縁に沿って外向きにのびる延長部が、前記昇降体の側壁に取り付けられて前記水平な軸に平行な軸のまわりに旋回可能とされ、
前記昇降体の昇降に伴い、前記一対の扇形板が垂直面内において互いに前記中心のまわりに回転するようになっており、
前記一対の扇形板のうちの一方の扇形板の周壁面上には、前記揺動体の前記傾斜角度に対応する角度目盛が付される一方、前記一対の扇形板のうちの他方の扇形板の周壁面上には、ゼロ点目盛が付されていることを特徴とする請求項1に記載の歯科技工用角度調整ステージ装置。 - 前記基軸が前記基台に固定されており、
前記角度表示機構は、互いに中心のまわりに回転自在に連結された一対の扇形板を有し、
前記一対の扇形板のうちの一方の扇形板の半径方向一側縁の先端部、または前記一方の扇形板から前記半径方向一側縁に沿って外向きにのびる延長部が、前記基台に取り付けられて水平な軸のまわりに旋回可能とされ、
前記一対の扇形板のうちの他方の扇形板における前記一方の扇形板の前記半径方向一側縁に近い方の半径方向側縁の先端部、または前記他方の扇形板から前記半径方向側縁に沿って外向きにのびる延長部が、前記昇降体の側壁に取り付けられて前記水平な軸に平行な軸のまわりに旋回可能とされ、
前記昇降体の昇降に伴って、前記一対の扇形板が垂直面内において互いに前記中心のまわりに回転するようになっており、
前記一対の扇形板のうちの一方の扇形板の周壁面上には、前記揺動体の前記傾斜角度に対応する角度目盛が付される一方、前記一対の扇形板のうちの他方の扇形板の周壁面上には、ゼロ点目盛が付されていることを特徴とする請求項1に記載の歯科技工用角度調整ステージ装置。 - 前記基台に設けられた、前記ステージ上に固定された前記歯科技工用ワークに対して設計用の印記を行うための印記ユニットをさらに備え、
前記印記ユニットは、
前記基台に突設されて垂直にのびるポールと、
前記ポールに取り付けられて、前記ポールの径方向にのびるとともに、前記ポールに直交する面上においてポールの軸のまわりに旋回可能なアームと、
前記アームの先端に設けられたペンホルダーと、
前記ペンホルダーに保持され、前記ペンホルダーから下向きに前記ポールに平行にのびるペンと、を有していることを特徴とする請求項1に記載の歯科技工用角度調整ステージ装置。
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US17/442,735 US20220218451A1 (en) | 2019-03-28 | 2019-03-28 | Angle adjustment stage device for dental technique |
EP19922202.7A EP3949900B1 (en) | 2019-03-28 | 2019-03-28 | Angle adjustment stage device for dental technique |
KR1020217032300A KR20210143795A (ko) | 2019-03-28 | 2019-03-28 | 치과 기공용 각도 조정 스테이지 장치 |
CN201980094800.5A CN113645923B (zh) | 2019-03-28 | 2019-03-28 | 牙科技工用角度调整工作台装置 |
PCT/JP2019/013820 WO2020194721A1 (ja) | 2019-03-28 | 2019-03-28 | 歯科技工用角度調整ステージ装置 |
JP2019554428A JP6624540B1 (ja) | 2019-03-28 | 2019-03-28 | 歯科技工用角度調整ステージ装置 |
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CN113645923B (zh) | 2022-08-09 |
EP3949900A4 (en) | 2022-11-16 |
JP6624540B1 (ja) | 2019-12-25 |
CN113645923A (zh) | 2021-11-12 |
US20220218451A1 (en) | 2022-07-14 |
EP3949900B1 (en) | 2023-06-28 |
EP3949900C0 (en) | 2023-06-28 |
JPWO2020194721A1 (ja) | 2021-04-08 |
EP3949900A1 (en) | 2022-02-09 |
KR20210143795A (ko) | 2021-11-29 |
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