A jaw movement simulation structure

Abstract

A jaw movement simulation structure disclosed by the present invention includes: a first frame; a second frame hinged to the first frame; a first driving device for driving the second frame to swing on the first frame; a third frame slidably disposed on the second frame; a second driving device for driving the third frame to slide on the second frame; a lower jaw hinged to the third frame; and a third driving device for driving the lower jaw to swing on the third frame. The present invention is provided with the first driving device, the second driving device and the third driving device, which can drive the second frame to swing on the first frame, the third frame to slide on the second frame, and the lower jaw to swing on the third frame, realizing the automatic control of the movement of the lower jaw, and can improve the convenience of the movement of the lower jaw of the present invention and the improvement of the movement simulation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of jaw movement, and particularly relates to a jaw movement simulation structure. Background Art

[0002] The human mandible is driven by chewing muscles and makes complex three-dimensional movements such as opening, protruding, and lateral movements in three-dimensional space relative to the maxilla under the restraint of the temporomandibular joint. Among them, the opening movement of the upper and lower jaws is divided into three stages: small opening movement, large opening movement, and maximum opening movement. During the small opening movement, the mandible descends about 2 cm, and the condyle only makes a rotational movement. During the large opening movement, the mandible descends more than about 2 cm, and the condyle not only has a rotational movement but also a sliding movement. A articulator is a model that simulates the movement of the human mandible, which can transfer the height and jaw position relationship of the patient's upper and lower jaws to the articulator for processes such as making wax patterns and adjusting occlusion outside the mouth, and can also assist in the diagnosis and treatment of occlusal diseases and clinical training for dentists. At present, most of the adjustments of the articulator are carried out manually, which is not convenient for operation. Summary of the Invention

[0003] The purpose of the present invention is to avoid the deficiencies of the prior art and provide a jaw movement simulation structure, thereby effectively solving the deficiencies existing in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a jaw movement simulation structure, including:

[0005] A first frame;

[0006] A second frame, hinged to the first frame;

[0007] A first driving device for driving the second frame to swing on the first frame;

[0008] A third frame, slidably arranged on the second frame;

[0009] A second driving device for driving the third frame to slide on the second frame;

[0010] A mandibular part, hinged to the third frame;

[0011] A third driving device for driving the mandibular part to swing on the third frame.

[0012] Further, a first gear transmission structure is provided between the first driving device and the second frame.

[0013] Furthermore, the third frame body includes two movable frames respectively cooperating with the second frame body. The movable frames are hinged to the mandibular part. A sliding part is arranged on the second frame body to cooperate with the movable frames. The sliding part is hinged to the movable frames and slides under the drive of a second driving device to drive the movable frames to move.

[0014] Furthermore, a second gear transmission structure is arranged between the second driving device and the sliding part.

[0015] Furthermore, a third gear driving device is arranged between the third driving device and the mandibular part.

[0016] Furthermore, the mandibular part can move relative to the movable frame along the direction of its swing center line.

[0017] Furthermore, a shaft structure is arranged on the mandibular part to cooperate with the movable frame.

[0018] Furthermore, an assembly hole is arranged on the movable frame to cooperate with the shaft structure. The shaft structure can perform axial and circumferential movements in the assembly hole.

[0019] Furthermore, the third driving device is movably cooperated with the movable frame.

[0020] Furthermore, the relative movement direction of the third driving device and the movable frame is parallel to the axial direction of the shaft structure.

[0021] The above technical solution of the present invention has the following beneficial effects: The present invention is provided with a first driving device, a second driving device and a third driving device, which can drive the second frame body to swing on the first frame body, the third frame body to slide on the second frame body, and the mandibular part to swing on the third frame body, realizing the automatic control of the mandibular part movement, and improving the convenience of the mandibular part movement and the movement simulation effect of the present invention. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0023] Figure 2 is an exploded view of an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of a partial structure of an embodiment of the present invention Figure 1 ;

[0025] Figure 4 is Figure 3 a partial enlarged view at A in

[0026] Figure 5 is Figure 3 a partial enlarged view at B in

[0027] Figure 6 isFigure 3 Partial enlarged view at position C;

[0028] Figure 7 Schematic diagram of the partial structure of the embodiment of the present invention Figure 2 ;

[0029] Figure 8 is Figure 7 Partial enlarged view at position D in;

[0030] Figure 9 Schematic diagram of the partial structure of the embodiment of the present invention Figure 3 ;

[0031] Figure 10 Schematic diagram of the partial structure of the embodiment of the present invention Figure 4 ;

[0032] Figure 11 Schematic diagram of the coordinate system of the embodiment of the present invention. Specific embodiments

[0033] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0034] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Such as Figures 1-10As shown in the figure, a jaw movement simulation structure according to this embodiment includes a first frame body. A second frame body 1 is provided on the first frame body. Specifically, the second frame body 1 is hinged to the first frame body. The structure further includes a first driving device, which is used to drive the second frame body 1 to swing on the first frame body so as to simulate the opening and closing actions of the human mandible. A third frame body is slidably provided on the second frame body 1. Specifically, the third frame body slides back and forth under the drive of a second driving device so as to simulate the protraction action of the human mandible. A mandibular part 2 is further provided on the third frame body. The mandibular part 2 is hinged to the third frame body and is driven by a third driving device. Under the drive of the third driving device, the mandibular part 2 can also realize the opening and closing actions. The swinging mandibular part 2 and the swinging second frame body 1 can effectively increase the opening angle of the opening and closing actions of the mandibular part 2, and can more realistically simulate the opening and closing actions of the human mandible.

[0036] In this embodiment, a first gear 8 transmission structure is provided between the first driving device and the second frame body 1. Specifically, the first frame body includes an upper fixing frame 3 and a lower fixing frame 4 which are connected to each other. The upper fixing frame 3 is provided on the top of the lower fixing frame 4. A fixing part 5 is provided at the bottom of the lower fixing frame 4. The first driving device is provided on the fixing part 5. A connecting arm 6 is provided on the second frame body 1. The connecting arm 6 is hinged to the fixing part 5, so that the second frame body 1 can swing on the lower fixing frame 4. The first driving device can be a first driving motor 7. The output shaft of the first driving motor 7 is horizontally arranged, and a first gear 8 is provided on the output shaft of the first driving motor 7. An arc-shaped first toothed plate 9 is provided on the connecting arm 6 to cooperate with the first gear 8. The swing axis of the second frame body 1 coincides with the center line of the first toothed plate 9. Under the drive of the first driving motor 7, the first gear 8 drives the first toothed plate 9 to rotate, and then the second frame body 1 swings back and forth.

[0037] In a preferred embodiment, the third frame body includes two movable frames 10 which are respectively located at two ends of the second frame body 1. The bottoms of the two movable frames 10 are respectively hinged to two ends of the lower jaw portion 2. Sliding portions 11 are respectively arranged at two ends of the second frame body 1 in cooperation with the movable frames 10. A second gear 14 transmission structure is arranged between the sliding portion 11 and the second driving device. The top of the sliding portion 11 and the movable frame 10 are hinged by a hinge shaft 12. The axial direction of the hinge shaft 12 is perpendicular to the sliding direction of the sliding portion 11, and the axial direction of the hinge shaft 12 is parallel to the swinging direction of the second frame body 1. More specifically, the second driving device is a second driving motor 13 which is arranged on the second frame body 1. A second gear 14 is arranged on the output shaft of the second driving motor 13. Teeth 15 are arranged on the sliding portion 11 in cooperation with the second gear 14. Driven by the second driving motor 13, the second gear 14 and the teeth 15 cooperate to drive the sliding portion 11 to slide back and forth on the second frame body 1. More specifically, a first slide rail 16 is arranged on the sliding portion 11, and first limit grooves 17 adapted to the first slide rail 16 are respectively arranged at two ends of the second frame body 1 to increase the stability of the movement of the sliding portion 11. When the second driving motors 13 on both sides drive the movable frames 10 on both sides to move back and forth, the movable frames 10 and the sliding portion 11 are hinged, and the phenomenon of jamming can be avoided when the actions on both sides are inconsistent, increasing the stability of the action of the present invention and making the action smoother. More specifically, the plane on which the sliding portion 11 slides on the second frame body 1 is inclined towards the front lower part of the human body, making the jaw extension action of the lower jaw portion 2 closer to the human jaw action and improving the simulation effect of the present invention.

[0038] More specifically, the lower jaw portion 2 can move relative to the movable frame 10 along the direction of the swing center line of the lower jaw portion 2. In one embodiment, a shaft structure 18 is arranged on the lower jaw portion 2 in cooperation with the movable frame 10. The axial direction of the shaft structure 18 is horizontally arranged. More specifically, an assembly hole 19 is arranged on the movable frame 10, and the assembly hole 19 and the shaft structure 18 are mutually adapted. The shaft structure 18 can axially move and circumferentially move in the assembly hole 19 to realize the swing of the lower jaw portion 2 relative to the movable frame 10 and the horizontal movement. In this embodiment, driven by the second driving motor 13, when the driving strokes or driving directions of the second driving motors 13 on both sides are different, a certain distance exists between the two movable frames 10 in the horizontal direction of the front and back, so that relative displacements occur between the movable frames 10 and the two ends of the lower jaw portion 2 along the axial direction of the shaft structure 18, enabling the lower jaw portion 2 to perform left and right lateral jaw actions, improving the functionality of the present invention, making the simulation of the human jaw movement more vivid, and improving the simulation effect of the present invention.

[0039] In this embodiment, the third driving device and the movable frame 10 can move relative to each other, and the relative movement direction of the two is parallel to the axial direction of the circumferential structure. A third gear 21 transmission structure is provided between the third driving device and the lower jaw 2. Specifically, the third driving device can be a third driving motor 20. A third gear 21 is provided on the output shaft of the third driving motor 20. Arc-shaped second tooth plates 22 adapted to the third gear 21 are respectively provided at both ends of the lower jaw 2. The center line of the second tooth plate 22 coincides with the axis of the shaft structure 18. Driven by the third driving motor 20, the third gear 21 drives the second tooth plate 22 to rotate, thereby driving the lower jaw 2 to swing. Thus, when a relative displacement occurs between the lower jaw 2 and the movable frame 10 in the direction of the shaft structure 18, the displacement of this part is realized by the sum of the relative displacement between the third gear 21 and the second tooth plate 22 and the relative displacement between the third driving motor 20 and the movable frame 10, which can reduce the relative displacement amount between the third gear 21 and the second tooth plate 22 to a certain extent and avoid serious wear between the third gear 21 and the second tooth plate 22. In this embodiment, a second slide rail 23 is provided on the third driving motor 20, and a second limiting groove 24 adapted to the second slide rail 23 is provided on the movable frame 10. The second limiting groove 24 can move horizontally on the second slide rail 23, so that the third driving motor 20 can move horizontally relative to the movable frame 10. Baffles 25 are respectively provided on both sides of the third driving motor 20 relative to the movable frame 10. The distance between the two baffles 25 is greater than the width of the movable frame 10, so that the movement amount of the movable frame 10 relative to the third driving motor 20 is the distance between the two baffles 25, improving the stability of the operation of the present invention.

[0040] Working principle of the present invention: The present invention can simulate the movements of the human mandible. With the cooperation of the first driving motor 7, the second driving motor 13, and the third driving motor 20, it can achieve the protrusion movement, left and right lateral movements, and opening and closing movements of the mandibular part 2. When performing the opening and closing movement, the first driving motor 7 drives the second frame 1 to swing and the third driving motor 20 drives the mandibular part 2 to swing, thereby driving the mandibular part 2 to simulate the opening and closing movement of the human mandible. With the combined swing of the second frame 1 and the mandibular part 2, it can simulate the small opening and large opening movements of the human mandible, and can more realistically imitate the opening and closing movement of the human mandible, improving the simulation effect of the present invention. When performing the protrusion movement, the second driving motors 13 on both sides synchronously drive the sliding parts 11 on both sides to move forward and backward, thereby driving the movable frames 10 on both sides to move forward and backward synchronously, driving the mandibular part 2 to complete the protrusion, and simulating the protrusion movement of the human mandible. When performing the left and right lateral movements, the second driving motors 13 on both sides do not move synchronously, causing a displacement difference in the front and rear directions of the sliding parts 11 on both sides, causing the left and right sides of the mandibular part 2 to be staggered front and back, and making the mandibular part 2 simulate the left and right lateral movements of the human mandible. The first driving motor 7, the second driving motor 13, and the third driving motor 20 of the present invention can act separately, or two of them can cooperate, or all three can cooperate. The movement of the mandibular part 2 is closer to the real movement of the human mandible, improving the simulation effect of the present invention.

[0041] More specifically, when using the present invention for temporomandibular joint movement simulation, health record, and transferring the jaw relationship, refer to Figure 11For the coordinate system shown, the specific operation steps can be as follows: 1. Take the front end of the fixing bracket 4 (at the angle point of the nasal bone edge) as the origin of the skull coordinates, and correspond to the axis coordinate 6; 2. Take the axis structure 18 (left and right condyles) as the axis coordinate 3 (assuming the left condyle is coordinate 3 represented by Y1, and the right condyle is coordinate 3a represented by Y2); 3. Take the top of the middle part of the lower jaw 2 (the tip of the mandibular ramus) as the moving point coordinate 4 (or the individual difference marking point of the mandible); 4. Mark the reference object and record the movement trajectory of the human temporomandibular joint through a CT or other scanning device; 5. At the same time, take the upper and lower jaw models of the patient; 6. Simulate the movement of the temporomandibular joint movement trajectory through the present invention; 7. Coordinate 1 represents the protrusion and left lateral jaw movement, and the contralateral coordinate 1a represents the protrusion and right lateral movement; 8. Coordinate 2 represents the occlusion movement; 9. Coordinate 5 represents the adjustable condylar path inclination (-20 to +60°). Specifically, when analyzing the simulated movement of the temporomandibular joint, the following methods can be considered: 1. Run in a toothless mold state according to the movement trajectory of the human temporomandibular joint, record the no-load waveform diagrams of the first driving motor 7, the second driving motor 13, and the third driving motor 20 during the running process, and correct them; 2. Then, the present invention moves according to the movement trajectory of the temporomandibular joint, and records the normal jaw relationship movement waveform diagrams of the first driving motor 7, the second driving motor 13, and the third driving motor 20 during the running process; 3. After installing the prosthesis on the patient model, move according to the movement trajectory of the temporomandibular joint, and at the same time record the movement waveform diagrams of the first driving motor 7, the second driving motor 13, and the third driving motor 20 during the running process. The movement disorder points of the lower jaw 2 are accurately detected through the waveform diagrams of the first driving motor 7, the second driving motor 13, and the third driving motor 20 after installing the prosthesis, and the disorder points are corrected to establish a standard jaw relationship, so as to achieve the purpose of accurate extraoral repair.

[0042] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A jaw movement simulation structure, characterized in that, Comprising: A first frame body; A second frame body, hinged to the first frame body; A first driving device for driving the second frame body to swing on the first frame body, and a first gear transmission structure is arranged between the first driving device and the second frame body; A third frame body, slidably arranged on the second frame body; A second driving device for driving the third frame body to slide on the second frame body; A mandibular part, hinged to the third frame body; A third driving device for driving the mandibular part to swing on the third frame body; The third frame body includes two movable frames respectively cooperating with the second frame body. The movable frame is hinged to the mandibular part. A sliding part is arranged on the second frame body to cooperate with the movable frame. The sliding part is hinged to the movable frame. The sliding part slides under the drive of the second driving device to drive the movable frame to move; A second gear transmission structure is arranged between the second driving device and the sliding part; A third gear driving device is arranged between the third driving device and the mandibular part.

2. The jaw movement simulation structure according to claim 1, characterized in that: The mandibular part can move relative to the movable frame along the direction of its swing center line.

3. The jaw movement simulation structure according to claim 2, characterized in that: A shaft structure is arranged on the mandibular part to cooperate with the movable frame.

4. The jaw movement simulation structure according to claim 3, characterized in that: An assembly hole is arranged on the movable frame to cooperate with the shaft structure. The shaft structure can perform axial and circumferential movements in the assembly hole.

5. A jaw movement simulation structure according to claim 4, characterized in that: The third driving device is movably cooperated with the movable frame.

6. The jaw movement simulation structure according to claim 5, characterized in that: The relative movement direction of the third driving device and the movable frame is parallel to the axis direction of the shaft structure.

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