Oral cavity scanning device for edentulous jaw patient

Abstract

The invention discloses an oral cavity scanning device for an edentulous patient, and relates to the technical field of oral cavity scanning, the oral cavity scanning device comprises a main shell, two sides of the main shell are rotatably provided with fixing wings for fixing the inner wall of the oral cavity of the patient; the scanning mechanism comprises a scanning head arranged at the front end of the main shell and located between the two fixed wings, the side, facing the main shell, of the scanning head is telescopically connected with a connecting shell, the end, away from the scanning head, of the connecting shell is rotationally connected with a connecting plate, and the top of the connecting shell and the top of the connecting plate are rotationally connected with linkage mechanisms used for coordinating distributed rotation; the end, away from the connecting shell, of the connecting plate is connected with a control module used for coordinating unified control, the end, away from the connecting plate, of the control module is connected with an electric push rod providing thrust, and the outer surface of the control module is connected with an adjusting wheel used for arranging transverse rotation of the scanning head in a surrounding mode. The invention has the advantages of simple operation, difficulty reduction and personnel comfort improvement.

Description

Technical Field

[0001] The invention relates to the field of oral scanning technology, and in particular to an oral scanning device for edentulous patients. Background Art

[0002] The oral scanning device mainly uses the optical scanning principle to emit light through LED or laser light source. The light is focused by the lens system and irradiated into the oral cavity. After interacting with the surface of tissues such as teeth and gums, it is scattered and reflected. The reflected light is captured by the receiver and converted into an electrical signal. After digital processing and analysis, a three-dimensional oral model is finally reconstructed. This process significantly improves the accuracy of oral diagnosis and treatment. Existing oral scanning devices usually require personnel to hold the scanner and insert it into the patient's mouth, and make multiple adjustments and movements to allow the laser to scan the oral cavity.

[0003] For example, application number CN201811165754.7, oral scanning device and system thereof. In actual use, there are still the following deficiencies:

[0004] The device requires a person to grasp the main body and move the light-entering surface deep into the patient's mouth, and perform multiple movements and flips to ensure that the laser scans the oral teeth. However, multiple movements and flips as well as increased time increase the difficulty of operation, and when a person moves the main body, the main body is prone to collide with the patient's mouth, reducing the patient's comfort. Summary of the invention

[0005] In order to improve the problem that the conventional oral scanning device is difficult to operate and has a certain degree of experience, and reduces the comfort of patients, the present invention provides an oral scanning device for edentulous patients.

[0006] The present invention provides an oral scanning device for edentulous patients using the following technical solution:

[0007] An oral scanning device for edentulous patients, comprising a main housing, both sides of which are rotatably provided with fixed wings for fixing the inner wall of the patient's oral cavity, and a scanning mechanism that can be movably extended is provided between the two fixed wings;

[0008] The scanning mechanism comprises a scanning head arranged at the front end of the main housing and between the two fixed wings, the scanning head is telescopically connected to a connecting housing on one side facing the main housing, the connecting housing is rotatably connected to a connecting plate at one end away from the scanning head, and the connecting housing and the top of the connecting plate are both rotatably connected to a linkage mechanism for coordinated distributed rotation;

[0009] The end of the connecting plate away from the connecting shell is connected to a control module for coordinated control, the end of the control module away from the connecting plate is connected to an electric push rod for providing thrust, and the outer surface of the control module is surrounded by an adjustment wheel for setting the lateral rotation of the scanning head.

[0010] By adopting the above technical solution, the two fixed wings assist the patient's oral cavity to prevent the scanning mechanism from colliding with the inner wall of the oral cavity, thereby improving the patient's comfort. At the same time, the connecting shell and the connecting plate rotate asynchronously, so that the scanning head can perform differentiated circular rotation around the two fulcrums, thereby increasing the lateral scanning range of the scanning head, and cooperating with the electric push rod to increase the longitudinal scanning length of the scanning head. Finally, the control adjustment wheel is used to turn the horizontal direction of the scanning head to ensure that the patient's oral cavity is fully scanned. At the same time, the operation is simple and reduces the operating threshold for personnel.

[0011] Preferably, a rotating cavity is provided inside the connecting shell, a connecting groove is provided at the other end of the connecting shell located at the rotating cavity, a groove is provided at the bottom of one end of the inner wall of the rotating cavity close to the connecting groove to connect to the outside, and a rubber wheel is rotatably arranged in the groove, a linkage gear is abutted against the top of the rubber wheel, a threaded rod is fixed in the middle of the linkage gear, and the threaded rod passes through the side wall and is located in the connecting groove.

[0012] By adopting the above technical solution, the connection shell rotates to drive the rubber wheel to rotate, and the rubber wheel drives the linkage gear to rotate the threaded rod. As the threaded rod rotates, the scanning head translates along the connection groove, thereby increasing the scanning range of the scanning head.

[0013] Preferably, one end of the scanning head close to the connecting groove is threadedly connected to the threaded rod, and one end of the scanning head away from the connecting groove is connected and provided with a laser emitting port.

[0014] By adopting the above technical solution, the laser emitting port emits laser to scan the patient's oral cavity, and at the same time, the scanning head is threadedly connected to the threaded rod, so as to move slightly to increase the scanning range.

[0015] Preferably, the linkage mechanism comprises two rotating rods which penetrate and are fixedly connected with the connecting shell and the connecting plate, the tops of the two rotating rods are connected with mounting shells, and the bottoms of the mounting shells are provided with docking holes at the positions of the rotating rods.

[0016] By adopting the above technical solution, the two docking holes reserve space for the rotation of the two rotating rods, and at the same time the inner wall of the housing is installed to be rotatably connected with the two rotating rods, thereby providing top support for the two rotating rods and driving the two rotating rods to rotate.

[0017] Preferably, the tops of the two rotating rods are connected to electromagnetic clutches in the installation shell, the tops of the two electromagnetic clutches are connected to gear 1, and gear 2 is connected to the two gears 1 in the installation shell, and a servo motor is fixed to the bottom of gear 2.

[0018] By adopting the above technical solution, the servo motor drives gear 2 to rotate, and gear 2 drives two gears 1 to rotate two connecting rods. At the same time, two electromagnetic clutches cut off and connect the transmission of the rotation of the two gears 2, so that the two connecting rods rotate asynchronously.

[0019] Preferably, the bottoms of the two rotating rods are rotatably connected to a bottom plate, and the top of the bottom plate is provided with a frosted surface at the position where the groove is provided in the rotating cavity, and the surface of the frosted surface abuts against the rubber wheel.

[0020] By adopting the above technical solution, the bottom plate is integrally connected to the mounting shell through two rotating rods, thereby ensuring the rotation of the connecting shell and the connecting plate. As the connecting shell rotates, the rubber wheel and the frosted surface are driven to rub and rotate synchronously.

[0021] Preferably, a limiting hole is provided on the front end surface of the main shell, a movable cavity is provided inside the main shell and is connected to one side of the limiting hole, a control port is provided at the top of the movable cavity and passes through the main shell, an openable and closable sealing cover is connected to the top of the main shell at the position of the control port, and a movable groove is provided through the side wall of the movable cavity away from the limiting hole.

[0022] By adopting the above technical solution, the limit hole is connected to the movable cavity, reserving space for the extension and retraction of the scanning mechanism. At the same time, the movable cavity is connected to the outside through the control port, which is convenient for personnel to rotate the adjustment wheel in the movable cavity, thereby changing the direction of the scanning head.

[0023] Preferably, a limit block is provided at the end of the telescopic end of the electric push rod, a connecting seat is clamped and fixed on the outer surface of the limit block, and one end of the connecting seat away from the limit block is fixedly connected to the control module.

[0024] By adopting the above technical solution, the limit block is engaged with the inside of the connecting seat, thereby maintaining the connection between the electric push rod and the connecting seat, and at the same time, the connecting seat is driven to be retracted synchronously when the telescopic end of the electric push rod is retracted.

[0025] Preferably, the side walls of the main shell are provided with mounting protrusions at the positions of the two fixed wings, and the side walls of the main shell are provided with recovery grooves inwardly formed at the positions of the two mounting protrusions to engage with the fixed wings.

[0026] By adopting the above technical solution, the mounting protrusion provides a fulcrum for the rotation of the fixed wing, and the recovery groove is plugged into the fixed wing to achieve a storage effect.

[0027] Preferably, a plurality of control buttons are arranged on the top of the main housing, and the plurality of control buttons are respectively connected one by one with the electromagnetic clutch, the servo motor and the electric push rod through lines.

[0028] By adopting the above technical solution, multiple control buttons are connected to various structures through lines. People can control the scanning head to perform scanning operations by simply pressing the control buttons, which reduces the difficulty of use for people.

[0029] In summary, the present invention includes at least one of the following beneficial technical effects:

[0030] 1. The scanning head is driven to rotate in large and small amplitudes respectively by utilizing the asynchronous rotation of the connecting shell and the connecting plate. As the electric push rod pushes the connecting seat, the scanning length of the scanning head is increased, and the scanning range is increased as a whole. At the same time, the connecting shell rotates to make the rubber wheel contact the frosted surface, thereby driving the threaded rod to rotate. As the connecting shell rotates, the length of the scanning head body is slightly increased. The adjusting wheel is rotated to drive the scanning head to rotate in a circle. The personnel only need to press the control button and the adjusting wheel to control the scanning head to scan the patient's oral cavity, which reduces the difficulty of use.

[0031] 2. With the help of two fixed wings deployed in the patient's mouth, the inner wall of the patient's mouth is separated from the teeth, preventing the scanning head from colliding with the inner wall of the mouth during scanning, thereby improving the patient's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a three-dimensional unfolded view of the present invention;

[0033] Figure 2 This is a fixed-wing recovery diagram of the present invention;

[0034] Figure 3 An exploded view of the scanning mechanism of the present invention;

[0035] Figure 4 It is an exploded diagram of the linkage mechanism of the present invention;

[0036] Figure 5 This is a diagram showing the internal structure of the main housing of the present invention;

[0037] Figure 6 This is a diagram of the interior of the connection housing of the present invention.

[0038] Reference numerals: 1, main housing; 2, fixed wing;

[0039] 3. Scanning mechanism; 31. Scanning head; 32. Laser emission port; 33. Bottom plate;

[0040] 34, connecting housing; 341, rotating chamber; 342, connecting groove; 343, rubber wheel; 344, linkage gear; 345, threaded rod;

[0041] 35. linkage mechanism; 351. mounting housing; 352. docking hole; 353. rotating rod; 354. electromagnetic clutch; 355. gear 1; 356. gear 2; 357. servo motor;

[0042] 36. Connecting plate; 37. Adjusting wheel; 38. Control module;

[0043] 5. Recovery groove; 6. Sealing cover; 7. Limiting hole; 8. Active cavity; 9. Moving groove; 10. Electric push rod; 11. Limiting block; 12. Connecting seat; 13. Mounting protrusion; 14. Control button; 15. Control port; 16. Frosted surface. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-Figure 6 The present invention is described in further detail.

[0045] The embodiment of the invention discloses an oral cavity scanning device for edentulous patients.

[0046] Example 1

[0047] Reference Figure 1 , Figure 2 , Figure 5 , an oral scanning device for edentulous patients, comprising a main shell 1, both side surfaces of the main shell 1 are provided with recovery grooves 5 inwardly, and both ends of the groove bottoms of the two recovery grooves 5 on the side surface of the main shell 1 are fixedly provided with mounting protrusions 13, the mounting protrusions 13 are semicircular and protrude outward, and a connecting rod is fixedly provided between the two center-aligned mounting protrusions 13, a fixed wing 2 is rotatably connected to the surface of the connecting rod, the fixed wing 2 is arc-shaped as a whole, the two fixed wings 2 are unfolded and spliced ​​with the front end of the main shell 1 to form an arc surface, and the outer shapes of the two fixed wings 2 are embedded with the recovery grooves 5 to form a plug-in connection, the upper end surface of the main shell 1 is located at the top of the two connecting rods and is threadedly connected with screws, and the fixed wings 2 are tightened and fixed by screwing in.

[0048] The two fixed wings 2 rotate in a circle with the connecting rod of the mounting protrusion 13 as the center, so as to be unfolded at the front end of the main shell 1, thereby providing support for the inner wall of the patient's mouth, so that the patient's mouth is opened to facilitate the scanning operation of the personnel, and at the same time, the screws on the top of the main shell 1 are rotated to fix the two fixed wings 2 to prevent the fixed wings 2 from deviating. The two recovery grooves 5 are located at both ends of the two fixed wings 2, thereby providing space for the recovery of the two fixed wings 2 and facilitating the plugging of the two fixed wings 2.

[0049] Reference Figure 1 , Figure 5A limiting hole 7 is provided inwardly on the side surface of the main shell 1 between the two fixed wings 2, and a movable cavity 8 is provided at the bottom of the limiting hole 7 in the main shell 1. A control port 15 is provided at the top of the movable cavity 8, which passes through the main shell 1. A movable groove 9 is provided inwardly at one end of the movable cavity 8 away from the limiting hole 7, and an electric push rod 10 is fixed in the movable groove 9. The telescopic end of the electric push rod 10 faces the movable cavity 8, and a limiting block 11 is fixedly provided at the end of the telescopic end of the electric push rod 10 protruding outward. A connecting seat 12 is connected to the end of the limiting block 11 away from the electric push rod 10, and a card slot engaged with the limiting block 11 is provided inside the connecting seat 12, so that the card slot of the connecting seat 12 is card-connected and fixed with the limiting block 11.

[0050] It should be noted that a through hole is opened at one end of the movable groove 9 away from the electric push rod 10 to connect to the outside, and an electric wire is connected in the through hole to connect the electric push rod 10 to the external power supply device. The upper end surface of the main shell 1 is located at the position of the control port 15 and is rotatably connected to a sealing cover 6, and the sealing cover 6 can be movably opened and closed. A plurality of control buttons 14 (at least five control buttons 14) are fixedly provided on one side of the sealing cover 6.

[0051] The limiting hole 7 is connected to the active cavity 8, reserving the operating space for the subsequent rotation and extension of the scanning mechanism 3. At the same time, the top of the active cavity 8 is connected to the outside through the control port 15, so that the personnel can observe and adjust the scanning mechanism 3 through the control port 15, so that the scanning mechanism 3 can be adjusted to fit the patient's oral size. The sealing cover 6 seals and covers the control port 15 to keep the active cavity 8 dry. The electric push rod 10 pushes the connecting seat 12 to translate in the movable groove 9, thereby driving the scanning mechanism 3 to move as a whole, thereby adjusting the scanning range of the scanning mechanism 3.

[0052] Reference Figure 2 , Figure 3 , Figure 6 The scanning mechanism 3 includes a scanning head 31 that is movably and telescopically arranged between the two fixed wings 2. A groove is provided inwardly on a side surface of the scanning head 31 away from the main shell 1, and a laser emitting port 32 is fixedly provided in the groove. The interior of the scanning head 31 is hollow and is provided with a laser generating device, and the laser generating device is connected to the laser emitting port 32. The end of the scanning head 31 facing the main shell 1 protrudes outward, and a connecting shell 34 is connected to the protruding surface. A rotating cavity 341 is provided inside the connecting shell 34, and the bottom of the rotating cavity 341 passes through the connecting shell 34 and is connected to the outside. At the same time, a connecting groove 342 is provided inwardly on a side of the connecting shell 34 away from the rotating cavity 341, and the notch position of the connecting groove 342 protrudes inward, and the protrusion of the connecting groove 342 is snap-fitted with the protrusion at the end of the scanning head 31.

[0053] It should be noted that a rubber wheel 343 is rotatably arranged at the connecting opening of the rotating chamber 341, the bottom of the rubber wheel 343 is located outside the connecting shell 34, and the top of the rubber wheel 343 is located inside the connecting shell 34 and abuts against a linkage gear 344, a threaded rod 345 is fixed in the middle of the linkage gear 344, and one end of the threaded rod 345 movably passes through the side wall of the connecting shell 34 and is located in the connecting groove 342.

[0054] When the connecting shell 34 rotates, the rubber wheel 343 is driven to rotate synchronously, so that the rubber wheel 343 rotates and drives the linkage gear 344 to rotate. The rotation of the linkage gear 344 drives the threaded rod 345 to rotate synchronously. At the same time, the threaded rod 345 is threadedly connected to the end of the scanning head 31. As the threaded rod 345 rotates, the scanning head 31 is driven to translate along the connecting groove 342. At the same time, the protrusion of the connecting groove 342 is engaged with the protrusion at the end of the scanning head 31, so as to prevent the scanning head 31 from being excessively removed, forming a limiting effect. The laser generating device in the scanning head 31 scans through the laser emission port 32, so as to feedback 3D data of the patient's oral cavity.

[0055] Reference Figure 1 , Figure 3 , Figure 4 , a connecting plate 36 is connected to one end of the connecting shell 34 away from the scanning head 31, and a linkage mechanism 35 is provided between the connecting shell 34 and the connecting plate 36;

[0056] The linkage mechanism 35 includes a rotating rod 353 that passes through and is fixed on the upper end surface of the connecting shell 34 and the connecting plate 36. The bottoms of the two rotating rods 353 pass through the connecting shell 34 and the lower end surface of the connecting plate 36 and are rotatably connected to the bottom plate 33. The tops of the two rotating rods 353 are rotatably connected to the mounting shell 351. The interior of the mounting shell 351 is hollow, and a docking hole 352 is opened at the bottom of the mounting shell 351 at the position of the two rotating rods 353. The two rotating rods 353 are both inserted through the two docking holes 352 and docked with the electromagnetic clutch 354, and the tops of the two electromagnetic clutches 354 are both docked with gear 1 355. The tops of the two gear 1 355 are rotatably connected to the top of the inner wall of the mounting shell 351. A gear 2 356 is gear-connected between the two gear 1 355, and the top of the gear 2 356 is rotatably connected to the top of the inner wall of the mounting shell 351. The bottom of the gear 2 356 is docked and fixed with a servo motor 357.

[0057] It should be noted that a frosted surface 16 is provided on the surface of the bottom plate 33 at the opening of the rotating cavity 341, and the frosted surface 16 is in contact with the rubber wheel 343. At the same time, a control module 38 is fixedly connected to one end of the connecting plate 36 away from the connecting shell 34, and one end of the control module 38 away from the connecting plate 36 is fixedly connected to the connecting seat 12. An adjusting wheel 37 is fixedly provided on the side surface of the control module 38, and the width of the adjusting wheel 37 is consistent with the width of the active cavity 8 (a rotating gap is left between the adjusting wheel 37 and the active cavity 8). A plurality of small gears are rotatably provided between gear 1 355 and gear 2 356, thereby reducing the rotation speed of gear 1 355, and the number of small gears is adjusted according to control requirements.

[0058] The rotating shaft of the servo motor 357 drives gear 2 356 to rotate, and as gear 2 356 rotates, gear 1 355 is driven to rotate synchronously, and gear 1 355 is reduced in speed by the transmission of multiple small gears. The two gears 1 355 respectively transmit rotational force to the two electromagnetic clutches 354, and the two electromagnetic clutches 354 respectively drive the two rotating rods 353 to rotate asynchronously. The two rotating rods 353 respectively drive the connecting shell 34 and the connecting plate 36 to rotate. As the connecting shell 34 and the connecting plate 36 rotate, the part from the scanning head 31 to the connecting shell 34 is rotated by the left rotating rod 353, and the part from the scanning head 31 to the connecting plate 36 is rotated by the right rotating rod 353, forming a rotation within 300°, thereby performing a blind-angle scan of the patient's oral cavity.

[0059] Among them, the device also includes a laser emission port 32, a laser generating device, an electromagnetic clutch 354, a servo motor 357, a control module 38, an electric push rod 10, a control button 14 and a connecting circuit at the bottom of the control button 14, which are all existing technologies, and their structural principles are no longer repeated. At the same time, the control button 14 is connected to the laser generating device, two electromagnetic clutches 354, the servo motor 357 and the electric push rod 10 through the circuit for docking and control.

[0060] The implementation principle of the oral scanning device for edentulous patients in the embodiment of the present invention is as follows: when using the device, the two fixed wings 2 need to be rotated outwards around the connecting rod of the mounting protrusion 13, so as to be adjusted to the unfolded state (such as Figure 1 As shown in the figure, when the two fixed wings 2 are unfolded to a certain angle (the angle is smaller than the patient's mouth opening range), the device is placed in the patient's mouth, and the fixed wings 2 are further unfolded to make the two fixed wings 2 contact the inner wall of the patient's mouth, and then the two screws on the top of the main housing 1 are turned to fix the two fixed wings 2, thereby opening the patient's mouth for easy scanning and improving the patient's comfort;

[0061] As the fixed wing 2 is placed in the patient's oral cavity, the scanning head 31 is driven to be located in the patient's oral cavity, and then the personnel presses the control button 14 to extend the electric push rod 10, and the electric push rod 10 pushes the connecting seat 12 to translate, and the connecting seat 12 drives the connecting plate 36 to finally extend the scanning head 31 in the patient's oral cavity, so that the scanning head 31 has enough movement size reserved;

[0062] Then, the personnel presses the control button 14 to rotate the servo motor 357, and the servo motor 357 drives the gear 2 356 to rotate the gear 1 355, and the two gears 1 355 rotate to drive the two rotating rods 353 to rotate. At the same time, the personnel respectively disconnect and distribute the two electromagnetic clutches 354 through the control button 14, so that the two rotating rods 353 rotate asynchronously, forming a state in which the connecting shell 34 and the connecting plate 36 rotate asynchronously, so that the scanning head 31 rotates in two states with the left rotating rod 353 and the right rotating rod 353 as the center, respectively, so that the rotation range of the scanning head 31 is maintained above 300°, and the scanning head 31 is located in the patient's mouth and moves in a plane with the help of the electric push rod 10, so as to maintain the scanning flexibility and accuracy of the scanning head 31;

[0063] As the connecting shell 34 rotates, the rubber wheel 343 and the frosted surface 16 generate friction, resulting in the rotation of the rubber wheel 343. As the rubber wheel 343 rotates, the linkage gear 344 is driven to rotate synchronously, and the linkage gear 344 drives the threaded rod 345 to rotate, thereby generating a thread thrust to make the scanning head 31 translate and extend along the connecting groove 342, thereby slightly increasing the length of the scanning head 31 and improving the scanning range of the scanning head 31. While the whole operation is simple, there is no need for personnel to adjust the scanning device multiple times, thereby increasing the comprehensiveness of the data.

[0064] When the scan on one side of the oral cavity is completed, the personnel can manually open the sealing cover 6 to rotate the adjustment wheel 37. The adjustment wheel 37 drives the control module 38 located in the active cavity 8 to rotate, so that the scanning head 31 rotates as a whole to form a 180° reversal, thereby scanning the opposite side of the oral cavity again, thereby ensuring the integrity of the oral scanning data.

[0065] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. An oral scanning device for edentulous patients, characterized in that: The device comprises a main housing (1), both sides of which are rotatably provided with fixing wings (2) for fixing the inner wall of the patient's oral cavity, and a scanning mechanism (3) that can be movably extended is provided between the two fixing wings (2); The scanning mechanism (3) comprises a scanning head (31) arranged at the front end of the main housing (1) and between the two fixed wings (2); a connecting housing (34) is telescopically connected to a side of the scanning head (31) facing the main housing (1); an end of the connecting housing (34) away from the scanning head (31) is rotatably connected to a connecting plate (36); and a linkage mechanism (35) for coordinated distributed rotation is rotatably connected to the top of the connecting housing (34) and the connecting plate (36); The end of the connecting plate (36) away from the connecting shell (34) is connected to a control module (38) for coordinated control, the end of the control module (38) away from the connecting plate (36) is connected to an electric push rod (10) for providing thrust, and the outer surface of the control module (38) is connected to an adjustment wheel (37) for setting the lateral rotation of the scanning head (31).

2. An oral scanning device for edentulous patients according to claim 1, characterized in that: A rotating chamber (341) is provided inside the connecting shell (34), and a connecting groove (342) is provided at the other end of the connecting shell (34) located in the rotating chamber (341). A groove is provided at the bottom of one end of the inner wall of the rotating chamber (341) close to the connecting groove (342) to communicate with the outside, and a rubber wheel (343) is rotatably arranged in the groove, and a linkage gear (344) is abutted against the top of the rubber wheel (343). A threaded rod (345) is fixed in the middle of the linkage gear (344), and the threaded rod (345) passes through the side wall and is located in the connecting groove (342).

3. An oral scanning device for edentulous patients according to claim 2, characterized in that: One end of the scanning head (31) close to the connection groove (342) is threadedly connected to the threaded rod (345), and one end of the scanning head (31) away from the connection groove (342) is connected and provided with a laser emission port (32).

4. The oral scanning device for edentulous patients according to claim 1, characterized in that: The linkage mechanism (35) comprises two rotating rods (353) which penetrate and are fixedly connected to the connecting shell (34) and the connecting plate (36); the tops of the two rotating rods (353) are connected with a mounting shell (351); and the bottoms of the mounting shells (351) are provided with docking holes (352) at the positions of the rotating rods (353).

5. The oral scanning device for edentulous patients according to claim 4, characterized in that: The tops of the two rotating rods (353) are located in the installation shell (351) and are both connected to an electromagnetic clutch (354), and the tops of the two electromagnetic clutches (354) are both connected to a gear one (355). A gear two (356) is gear-connected between the two gear ones (355) in the installation shell (351), and a servo motor (357) is fixed to the bottom of the gear two (356).

6. The oral scanning device for edentulous patients according to claim 4, characterized in that: The bottoms of the two rotating rods (353) are both rotatably connected to a bottom plate (33), and a frosted surface (16) is provided at the top of the bottom plate (33) at a position where the groove is provided in the rotating cavity (341), and the surface of the frosted surface (16) abuts against the rubber wheel (343).

7. The oral scanning device for edentulous patients according to claim 1, characterized in that: A limiting hole (7) is provided on the front end surface of the main shell (1); a movable cavity (8) is provided in the interior of the main shell (1) on one side of the limiting hole (7); a control port (15) is provided at the top of the movable cavity (8) penetrating the main shell (1); an openable and closable sealing cover (6) is provided at the top of the main shell (1) at the position of the control port (15); and a movable groove (9) is provided on the side of the movable cavity (8) away from the limiting hole (7) and penetrating the side wall.

8. The oral scanning device for edentulous patients according to claim 1, characterized in that: A limit block (11) is provided at the telescopic end of the electric push rod (10), a connecting seat (12) is fixedly connected to the outer surface of the limit block (11), and one end of the connecting seat (12) away from the limit block (11) is fixedly connected to the control module (38).

9. The oral scanning device for edentulous patients according to claim 1, characterized in that: The side walls of the main housing (1) are provided with mounting protrusions (13) at the positions of the two fixed wings (2), and the side walls of the main housing (1) are provided with recovery grooves (5) inwardly disposed at the positions of the two mounting protrusions (13) and engaged with the fixed wings (2).

10. The oral scanning device for edentulous patients according to claim 1, characterized in that: A plurality of control buttons (14) are arranged on the top of the main housing (1), and the plurality of control buttons (14) are respectively connected to the electromagnetic clutch (354), the servo motor (357) and the electric push rod (10) through lines.

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