Oral cavity fixed type planting guide plate

Abstract

The invention discloses an oral cavity fixing type planting guide plate which comprises a guide plate body and a tongue depressor fixed to the guide plate body and further comprises an oral cavity supporting mechanism and a mouth corner pushing-aside mechanism. The oral cavity supporting mechanism comprises a supporting rod and an abutting part, the height of the supporting rod is adjustable, the top of the supporting rod is connected with the abutting part, and the bottom of the supporting rod is connected with a wedge-shaped block; the mouth corner pushing mechanism comprises a first guide assembly, a moving block, a second guide assembly, two rotating shafts and two driving lever assemblies; the first guide assembly is connected between the tongue depressor and the supporting rod; the moving block is connected to the top of the tongue depressor in a sliding mode and located below the wedge-shaped block, and a wedge-shaped groove matched with the wedge-shaped block is formed in the top of the moving block; the second guide assembly is arranged on the tongue depressor; the elastic reset piece is connected between the tongue depressor and the moving block; by means of the mouth corner pushing-aside mechanism, when the oral cavity is opened through the oral cavity supporting mechanism, the mouth corner can be pulled and pushed aside towards the outer side mouth corner, the operation visual field is exposed, and observation and implantation are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to an oral fixed implant guide. Background Art

[0002] Missing teeth not only affects a patient's daily diet but also their personal image. Oral implant technology, a technique for implanting teeth within the human mouth, can replace missing teeth. The success of oral implant surgery depends on the precise placement of restoration-oriented implants. Conventional free-standing tooth placement often relies on the surgeon's experience and requires repeated verification during the procedure. For a novice implantologist, this often takes more time and cannot achieve precise implant placement.

[0003] In order to improve the accuracy of the implantation position, an implantation guide is currently used to guide the precise implantation position of the implant. The implantation guide is fixed to the gum and the guide positioning holes provided on the implantation guide are used to guide the implantation.

[0004] Because the patient's mouth must be open during implantation, some current implant guides are equipped with separate support devices to prevent the patient's mouth from closing during the implantation process and causing damage. However, during the process of oral support, the corners of the patient's mouth will shrink, reducing the surgical field of view. This is especially true for implants located near the corners of the mouth. The shrinking corners of the mouth will greatly affect the implant observation field of view, thus bringing certain difficulties to the implant surgery. Summary of the Invention

[0005] The purpose of the present invention is to provide an oral fixed implant guide to solve the problem that when the implantation guide is currently used to guide dental implantation, when the implantation position is close to the corner of the mouth, the corner of the mouth that contracts after the mouth is opened is likely to block the surgical field of view.

[0006] The technical solution of the present invention is: The invention relates to an oral fixed implant guide, comprising a guide body and a tongue depressor fixed to the guide body, an oral support mechanism, a power conversion mechanism and two groups of mouth corner opening mechanisms; the oral support mechanism is arranged on the tongue depressor, comprising a support rod and an abutment portion, the height of the support rod is adjustable, and the top of the support rod is connected to the abutment portion, and the abutment portion is used to abut against the upper jaw; the power conversion mechanism comprises a first guide assembly, a wedge block, a moving block, a second guide assembly and an elastic reset member; the first guide assembly is connected between the tongue depressor and the support rod, and is used to move the support rod in a vertical direction; the wedge block is connected to the bottom of the support rod; the moving block is slidably connected to the top of the tongue depressor The top of the moving block is provided with a wedge-shaped groove matching the wedge block; the second guide assembly is arranged on the tongue depressor, and is used to guide the moving block to move horizontally when the wedge block moves downward to squeeze the wedge groove; the elastic reset member is connected between the tongue depressor and the moving block, and is used to reset the moving block after it slides; two sets of mouth corner prying mechanisms are symmetrically arranged on both sides of the moving block, and the mouth corner prying mechanism includes a rotating shaft, a gear, a rack and a lever assembly; the lower end of the rotating shaft is rotatably connected to the tongue depressor; the gear is fixedly connected to the rotating shaft; the rack is fixed on the side wall of the moving block and meshes with the gear; the lever assembly is connected to the rotating shaft.

[0007] Preferably, as a further improvement of the present invention, a support shell is provided on the top of the tongue depressor, the first guide component is a first opening opened at the top of the support shell, the support rod is slidably connected in the first opening, the second guide component is a second opening opened at the bottom of the side wall of the support shell, and the moving block is slidably connected in the second opening.

[0008] Preferably, as a further improvement of the present invention, the reset member includes a first reset spring, which is horizontally arranged in the support shell, and one end of the first reset spring is connected to the end of the moving block, and the other end of the first reset spring is connected to the inner wall of the support shell.

[0009] Preferably, as a further improvement of the present invention, limiting grooves are provided on the inner walls on both sides of the support shell along the longitudinal direction thereof, the lower end of the support rod is connected to a horizontally arranged slider, the two side walls of the slider are respectively slidably connected in the two limiting grooves, and the wedge block is fixed at the bottom of the slider.

[0010] Preferably, as a further improvement of the present invention, a plurality of second return springs are connected between the inner top surface of the support shell and the top of the slider.

[0011] Preferably, as a further improvement of the present invention, the shift rod assembly includes a connecting rod, a V-shaped shift rod and an arc-shaped traction block; one end of the connecting rod is fixed to the rotating shaft; the V-shaped shift rod and the connecting rod are arranged colinearly, and the pointed end of the V-shaped shift rod is fixed to the other end of the connecting rod; the arc-shaped traction block is fixedly connected to the open end of the V-shaped shift rod.

[0012] Preferably, as a further improvement of the present invention, a support frame is provided on the top of the tongue depressor, a strip groove is opened on the side wall of the support frame, and the connecting rod is a telescopic sleeve structure, including an outer sleeve and an inner rod body, the outer sleeve is passed through the strip groove, and one end of the outer sleeve is fixed to the side wall of the rotating shaft, one end of the inner rod body is slidably connected to the outer sleeve, and the other end of the inner rod body is connected to the V-shaped lever, and an inclined adjustment rod is provided between the inner rod body and the support frame, and the two ends of the adjustment rod are hinged to the inner rod body and the support frame respectively.

[0013] Preferably, as a further improvement of the present invention, the support rod includes a first rod body, a second rod body, a threaded sleeve and an adjusting bolt, the top of the second rod body is provided with a receiving groove, the lower side of the first rod body is slidingly connected to the receiving groove, the threaded sleeve is fixed on the side wall of the second rod body, and the threaded sleeve is connected to the receiving groove, and the adjusting bolt is threadedly connected to the threaded sleeve.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The two sets of mouth corner-pushing mechanisms can pull and pry the mouth corners apart when the mouth is opened by the oral support mechanism, thereby expanding the surgical field of view for easy observation of implants. This effectively solves the problem that when the implant position is close to the mouth corner, the mouth corners that shrink after the mouth is opened are likely to block the surgical field of view.

[0015] 2. When the two sets of mouth corner prying mechanisms are used to pull and pry the mouth corners, the oral support mechanism and the power conversion mechanism can be used as a driving element to drive the mouth corner prying mechanism. The patient's upper jaw can be used to press down the abutment part, and the power conversion mechanism can be used to convert the vertical movement of the support rod into the horizontal movement of the moving block. When the moving block moves, it will drive the rotating shafts on both sides of the moving block through the transmission of the gear rack in the mouth corner prying mechanism, and then drive the two lever assemblies to realize the expansion pulling process of the mouth corners on both sides. There is no need to rely on other driving elements for driving, and the patient can control the degree of mouth corner prying by himself.

[0016] 3. When adjusting the size of the oral cavity, the abutment portion can be brought into contact with the patient's upper jaw by adjusting the height of the support rod according to the opening diameter of different patients, and the patient's upper jaw can be supported by the abutment portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a front perspective structural diagram of an oral fixed implant guide according to the present invention.

[0018] Figure 2 This is a schematic diagram of the rear-view stereoscopic structure of an oral fixed implant guide of the present invention.

[0019] Figure 3 This is a schematic diagram of the top view of the structure of an oral fixed implant guide of the present invention.

[0020] Figure 4 The figure is a schematic cross-sectional view of the internal structure of the shell of an oral fixed implant guide of the present invention.

[0021] Figure 5 This is a structural schematic diagram of the wedge-shaped block in an oral fixed implant guide of the present invention during extrusion and movement.

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of an optimized solution for an oral fixed implant guide of the present invention.

[0023] Figure 7 For the present invention Figure 6 Schematic diagram of the top view structure. DETAILED DESCRIPTION

[0024] The following combination Figures 1 to 7 , a detailed description of the specific embodiments of the present invention is provided. In the description of the invention, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limiting the present invention.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; and in the description of the invention, unless otherwise specified, "plurality" means two or more.

[0026] Example like Figures 1 to 5As shown, an embodiment of the present invention provides an oral fixed implant guide, comprising a guide body 1 and a tongue depressor 2 fixed to the guide body 1. The guide body 1 is an arc-shaped plate body that matches the curvature of the gums. A groove for clamping on the gums is provided at the lower part of the guide body 1. A plurality of fixing holes 11 are provided on the outer arc wall of the guide body 1. The fixing holes 11 are used to pass fixing bolts to fix the guide body 1 on the gums. A guide positioning hole 12 is provided on the top of the guide body 1. The installation position of the guide positioning hole 12 is customized according to the actual detection position of all implants of the patient. The guiding process of the implant drill is realized through the guide positioning hole 12. During the operation, the guide body 1 is first put on the patient's gums, and then the guide body 1 is fixed on the patient's gums by using the fixing bolts through the fixing hole 11, and the tongue of the patient is limited by the tongue depressor 2 to avoid damage caused by movement during the operation. After the guide body 1 is fixed, the guide positioning hole 12 is used to guide the implant drill.

[0027] In order to adjust the size of the opening during implantation guidance to adjust the field of view, the present invention also includes an oral support mechanism, a power conversion mechanism and two sets of mouth corner opening mechanisms; the oral support mechanism is arranged on the tongue depressor 2, and includes a support rod 31 and an abutment portion 32, the height of the support rod 31 is adjustable, and the top of the support rod 31 is connected to the abutment portion 32, and the abutment portion 32 is used to abut against the upper jaw; the power conversion mechanism includes a first guide assembly 41, a wedge block 42, a moving block 43, a second guide assembly 44 and an elastic reset member 45; the first guide assembly 41 is connected between the tongue depressor 2 and the support rod 31, and is used to move the support rod 31 in the vertical direction; the wedge block 42 is connected to the bottom of the support rod 31; the moving block 43 is slidably connected to the top of the tongue depressor 2, and is positioned Below the wedge block 42, a wedge-shaped groove 431 matching the wedge block 42 is opened on the top of the moving block 43; the second guide assembly 44 is arranged on the tongue depressor 2, for guiding the moving block 43 to move horizontally when the wedge block 42 moves downward to squeeze the wedge groove 431; the elastic reset member 45 is connected between the tongue depressor 2 and the moving block 43, for resetting the moving block 43 after sliding; two sets of mouth corner prying mechanisms are symmetrically arranged on both sides of the moving block 43, and the mouth corner prying mechanism includes a rotating shaft 51, a gear 52, a rack 53 and a lever assembly; the lower end of the rotating shaft 51 is rotatably connected to the tongue depressor 2; the gear 52 is fixedly connected to the rotating shaft 51; the rack 53 is fixed on the side wall of the moving block 43 and meshes with the gear 52; the lever assembly is connected to the rotating shaft 51.

[0028] In this embodiment, when the size of the oral cavity is adjusted, according to the different opening diameters of the patients, the height of the support rod 31 is adjusted so that the abutment portion 32 abuts against the patient's upper jaw, and the abutment portion 32 is used to support the patient's upper jaw to prevent the oral cavity from closing during implantation. At the same time, as the opening diameter becomes larger, the corners of the mouth will shrink, so the corners of the mouth can be pulled and opened by the provided mouth corner opening mechanism to expand the surgical field of view. When the mouth corner opening mechanism is used for traction, the cooperation of the oral support mechanism and the power conversion mechanism can be used as a driving element to drive the mouth corner opening mechanism to move. Specifically, the abutment portion 32 can be pressed down by the patient's upper jaw, so that the support rod 31 and the wedge block 42 descend under the guidance of the first guide component 41. During the descent, the wedge block 42 will squeeze the wedge groove 431, so that the moving block 43 moves horizontally under the guidance of the second guide component 44, and the power conversion mechanism is used to convert the vertical movement of the support rod 31 into the horizontal movement of the moving block 43. For details, refer to Figure 3 As shown, when the moving block 43 moves forward horizontally, the racks 53 fixed on both sides of the moving block 43 will drive the respective meshing gears 52 to rotate, and then drive the rotating shaft 51 on the right to rotate clockwise and the rotating shaft 51 on the left to rotate counterclockwise. During the rotation of the two rotating shafts 51, the lever assembly is driven to rotate synchronously, and the lever assembly is used to achieve expansion traction of the corners of the mouth on both sides, thereby increasing the surgical field of view and facilitating the doctor's operation; due to the presence of the elastic reset member 45, the moving position of the moving block 43 will be limited, so that the patient only needs to slightly bite the abutment 32, so that the support rod 31 moves downward and contracts a certain distance to drive the mouth corner opening mechanism to pull the mouth corners apart, without relying on other driving elements to drive, and the patient can control the degree of mouth corner opening by himself. After the mouth corners are pulled open, the height of the support rod 31 can be further adjusted to drive the abutment 32 to rise and open the upper jaw, thereby restoring the initial oral opening size.

[0029] In another embodiment of the present invention, Figures 2 to 4 As shown, a support shell 4 is provided on the top of the tongue depressor 2, a first guide assembly 41 is a first opening opened at the top of the support shell 4, the support rod 31 is slidably connected in the first opening, and a second guide assembly 44 is a second opening opened at the bottom of the side wall of the support shell 4, and the moving block 43 is slidably connected in the second opening.

[0030] In this embodiment, part of the structures in the oral support mechanism and the mouth corner opening mechanism are hidden and protected by the support shell 4. At the same time, the first opening at the top of the support shell 4 is used as a first guide component 41 to guide the vertical movement of the support rod 31, and the second opening at the bottom of the side wall of the support shell 4 is used as a second guide component 44 to guide the horizontal movement of the moving block 43.

[0031] Specifically, such as Figure 4As shown, the elastic return member 45 includes a first return spring, which is horizontally arranged in the support housing 4. One end of the first return spring is connected to the end of the moving block 43, and the other end of the first return spring is connected to the inner wall of the support housing 4. The first return spring is provided to form an elastic limit for the moving block 43. During the movement of the moving block 43, the first return spring is compressed. The first return spring can also exert a certain supporting force on the abutment portion 32 to support the patient's oral opening.

[0032] In another embodiment of the present invention, Figure 4 and Figure 5 As shown, as an optimized solution of the above solution, limiting grooves 401 are provided on the inner walls on both sides of the support shell 4 along its longitudinal direction, and the lower end of the support rod 31 is connected to a horizontally arranged slider 6, and the two side walls of the slider 6 are respectively slidably connected in the two limiting grooves 401, and the wedge block 42 is fixed at the bottom of the slider 6.

[0033] In this embodiment, through the above-mentioned setting, the limit slide groove 401 is used to limit the position of the support rod 31 moving downward to drive the slider 6 to move, so as to prevent the support rod 31 from moving beyond the limit, resulting in excessive pulling and moving of the corner of the mouth and causing damage.

[0034] In another embodiment of the present invention, Figure 4 and Figure 5 As shown, as an optimized solution of the above solution, a plurality of second return springs 61 are connected between the inner top surface of the support shell 4 and the top of the slider 6 .

[0035] In this embodiment, through the above-mentioned arrangement, the additional multiple second return springs 61 can provide stronger support to the support rod 31 during the initial installation, so that when the support rod 31 abuts the patient's upper jaw through the abutment portion 32, the resistance of the support rod 31 is increased, thereby avoiding the patient compressing the first return spring 53 with a slight force to drive the mouth corner prying mechanism to pry apart, which requires force adjustment to control.

[0036] In another embodiment of the present invention, Figure 2 and Figure 3 As shown, as a specific embodiment of the shift rod assembly, the shift rod assembly includes a connecting rod 71, a V-shaped shift rod 72 and an arc-shaped traction block 73; one end of the connecting rod 71 is fixed to the rotating shaft 51; the V-shaped shift rod 72 is arranged colinearly with the connecting rod 71, and the pointed end of the V-shaped shift rod 72 is fixed to the other end of the connecting rod 71; the arc-shaped traction block 73 is fixedly connected to the open end of the V-shaped shift rod 72.

[0037] In this embodiment, by setting the lever assembly into three parts: a connecting rod 71, a V-shaped lever 72 and an arc-shaped traction block 73, the V-shaped lever 72 can be used to pull the open corner of the mouth during the process of driving the connecting rod 71 to rotate by the rotating shaft 51. At the same time, the V-shaped lever 72 can support the upper and lower bottom surfaces of the corner of the mouth, and the arc-shaped traction block 73 can hook the skin on the outer side of the corner of the mouth to prevent it from detaching from the V-shaped lever 72.

[0038] In another embodiment of the present invention, Figure 6 and Figure 7 As shown, as an optimized solution of the above solution, a support frame 8 is provided on the top of the tongue depressor 2, and a strip groove 81 is opened on the side wall of the support frame 8. The connecting rod 71 is a telescopic sleeve structure, including an outer sleeve 711 and an inner rod body 712. The outer sleeve 711 is passed through the strip groove 81, and one end of the outer sleeve 711 is fixed to the side wall of the rotating shaft 51, one end of the inner rod body 712 is slidably connected to the outer sleeve 711, and the other end of the inner rod body 712 is connected to the V-shaped lever 72. An inclined adjustment rod 82 is provided between the inner rod body 712 and the support frame 8, and the two ends of the adjustment rod 82 are hinged to the inner rod body 712 and the support frame 8 respectively.

[0039] In this embodiment, the original connecting rod 71 is set as an outer sleeve 711 and an inner rod body 712, so that the length of the connecting rod 71 can be telescopically adjusted, and an adjustment rod 82 is hinged between the inner rod body 712 and the support frame 8, so that in the process of using the connecting rod 71 to drive the V-shaped lever 72 to pull the corner of the mouth, as the rotation angle of the V-shaped lever 72 increases, the connecting rod 71 will extend under the support of the adjustment rod 82, so that the V-shaped lever 72 moves toward the outside of the oral cavity, and then as the pulling amplitude of the corner of the mouth increases, the width of the contact between the V-shaped lever 72 and the upper and lower side walls of the corner of the mouth will be reduced to adapt to the extreme pulling amplitude of the corner of the mouth and avoid tearing the corner of the mouth.

[0040] In another embodiment of the present invention, Figure 3 and Figure 4 As shown, as a specific embodiment of the height-adjustable support rod 31, the support rod 31 includes a first rod body 311, a second rod body 312, a threaded sleeve 313 and an adjusting bolt 314. The top of the second rod body 312 is provided with a receiving groove, the bottom of the second rod body 312 is connected to the top of the slider 6, the lower side of the first rod body 311 is slidably connected in the receiving groove, the side wall of the second rod body 312 is fixed with a threaded sleeve 313, and the threaded sleeve 313 is connected to the receiving groove, and the adjusting bolt 314 is threadedly connected in the threaded sleeve 313.

[0041] When the cam 314 is in the unlock position, the first lever 31 is unlocked and the second lever 31 is unlocked, so that the cam 314 can be unlocked when the cam 314 is unlocked.

[0042] In another embodiment of the present invention, Figure 2 and Figure 3 As shown, as a specific embodiment of the shift lever assembly, the abutting portion 32 is an arc-shaped abutting plate, the arc-shaped inner wall of the arc-shaped abutting plate is connected to the upper end of the first rod body 311, and the arc-shaped outer wall of the arc-shaped abutting plate is provided with a silicone layer.

[0043] In summary, the present invention discloses an oral fixed implant guide. When the size of the oral cavity is adjusted, according to the different opening diameters of the patients, the abutment portion 32 is abutted against the patient's upper jaw by adjusting the height of the support rod 31. The abutment portion 32 is used to support the patient's upper jaw to avoid oral closure during implantation. At the same time, as the opening diameter becomes larger, the corners of the mouth will shrink. Therefore, the corners of the mouth can be pulled by the provided mouth corner prying mechanism to expand the surgical field of view. When the mouth corner prying mechanism is used for traction, the moving block 43 is driven to move along the length direction of the guide body 1 by controlling the horizontal moving component. During the movement of the moving block 43, the gear 52 is driven to rotate by the rack 43, and then the rotating shaft 51 is driven to rotate. Since there is a pair of racks 43, gears 52 and rotating shaft 51 and they are located on both sides of the moving block 43, refer to Figure 3 As shown, when the moving block 43 moves forward, it drives the rotating shaft 51 on the right to rotate clockwise and drives the rotating shaft 51 on the left to rotate counterclockwise. During the rotation of the two rotating shafts 51, the lever assembly is driven to rotate synchronously. The lever assembly is used to achieve expansion traction on both sides of the mouth corners, thereby increasing the surgical field of view and facilitating the doctor's operation.

[0044] The above disclosures are only several preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. An oral fixed implant guide, comprising a guide body (1) and a tongue depressor (2) fixed to the guide body (1), characterized in that: Also includes: An oral support mechanism is provided on the tongue depressor (2), comprising a support rod (31) and an abutment portion (32), wherein the height of the support rod (31) is adjustable, and the top of the support rod (31) is connected to the abutment portion (32), and the abutment portion (32) is used to abut against the upper jaw; The power conversion mechanism comprises: a first guide assembly (41) connected between the tongue depressor (2) and the support rod (31) for moving the support rod (31) in a vertical direction; a wedge block (42) connected to the bottom of the support rod (31); a moving block (43) slidably connected to the top of the tongue depressor (2) and located below the wedge block (42), the top of the moving block (43) being provided with a wedge groove (431) matching the wedge block (42); a second guide assembly (44) provided on the tongue depressor (2) for guiding the moving block (43) to move horizontally when the wedge block (42) moves downward to squeeze the wedge groove (431); and an elastic reset member (45) connected between the tongue depressor (2) and the moving block (43) for resetting the moving block (43) after it slides. Two groups of mouth corner opening mechanisms are symmetrically arranged on both sides of the moving block (43), and the mouth corner opening mechanisms include: a rotating shaft (51), the lower end of which is rotatably connected to the tongue depressor (2); a gear (52) fixedly connected to the rotating shaft (51); a rack (53) fixed to the side wall of the moving block (43) and meshing with the gear (52); and a lever assembly connected to the rotating shaft (51).

2. The oral fixed implant guide according to claim 1, characterized in that: A support shell (4) is provided on the top of the tongue depressor (2); the first guide assembly (41) is a first opening opened on the top of the support shell (4); the support rod (31) is slidably connected in the first opening; the second guide assembly (44) is a second opening opened on the bottom of the side wall of the support shell (4); the moving block (43) is slidably connected in the second opening.

3. The oral fixed implant guide according to claim 2, characterized in that: The elastic return member (45) includes a first return spring, which is horizontally arranged in the support shell (4), and one end of the first return spring is connected to the end of the moving block (43), and the other end of the first return spring is connected to the inner wall of the support shell (4).

4. The oral fixed implant guide according to claim 2, characterized in that: The inner walls on both sides of the support shell (4) are provided with limiting sliding grooves (401) arranged along the longitudinal direction thereof, the lower end of the support rod (31) is connected to a horizontally arranged slider (6), the two side walls of the slider (6) are respectively slidably connected in the two limiting sliding grooves (401), and the wedge block (42) is fixed to the bottom of the slider (6).

5. The oral fixed implant guide according to claim 4, characterized in that: A plurality of second return springs (61) are connected between the inner top surface of the support shell (4) and the top of the slider (6).

6. The oral fixed implant guide according to claim 1, characterized in that: The lever assembly comprises: A connecting rod (71), one end of which is fixed to the rotating shaft (51); A V-shaped shifting rod (72) is arranged colinearly with the connecting rod (71), and the pointed end of the V-shaped shifting rod (72) is fixed to the other end of the connecting rod (71); The arc-shaped traction block (73) is fixedly connected to the open end of the V-shaped shifting rod (72).

7. The oral fixed implant guide according to claim 6, characterized in that: A support frame (8) is provided on the top of the tongue depressor (2), and a strip-shaped notch (81) is provided on the side wall of the support frame (8). The connecting rod (71) is a telescopic sleeve structure, comprising an outer sleeve (711) and an inner rod body (712). The outer sleeve (711) is inserted into the strip-shaped notch (81), and one end of the outer sleeve (711) is fixed to the side wall of the rotating shaft (51). One end of the inner rod body (712) is slidably connected to the outer sleeve (711), and the other end of the inner rod body (712) is connected to the V-shaped shifting rod (72). An inclined adjustment rod (82) is provided between the inner rod body (712) and the support frame (8), and the two ends of the adjustment rod (82) are respectively hinged to the inner rod body (712) and the support frame (8).

8. The oral fixed implant guide according to claim 1, characterized in that: The support rod (31) comprises a first rod body (311), a second rod body (312), a threaded sleeve (313) and an adjusting bolt (314); a receiving groove is provided on the top of the second rod body (312); the lower side of the first rod body (311) is slidably connected to the receiving groove; the threaded sleeve (313) is fixed to the side wall of the second rod body (312), and the threaded sleeve (313) is communicated with the receiving groove; and the adjusting bolt (314) is threadedly connected to the threaded sleeve (313).

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