A precision positioning guide device for biomedical dental implants

Abstract

This invention relates to the field of dental implant technology, specifically to a biomedical dental implant precision positioning guide device, comprising a base guide plate and an upper implant guide plate. The base guide plate has an arc-shaped structure and is installed on the side of the patient's missing tooth in the oral cavity. Multiple positioning cylinders are integrally formed on the base guide plate. The base guide plate and the implant guide plate are fixedly connected by a connecting plate. The implant guide plate forms multiple implant openings. An adjustment opening is provided near the outer side of the oral cavity and communicates with the implant opening. A positioning component can be detachably installed in the implant opening. A toothed groove can be detachably installed on the implant guide plate, which cooperates with the side of the patient's oral cavity with the missing tooth to achieve initial positioning. After positioning, the toothed groove is removed, and a guide sleeve is installed in the through hole. The positioning component of this invention achieves X and Y bidirectional precision micro-adjustment control through a slider and four guide rods forming a double guide rod system. A guide sleeve is screwed onto the slider to provide positioning guidance for the drill rod and protect the through hole from damage. The top limits the drill head to prevent the drill rod from excessively drilling and damaging the alveolar bone.

Description

Technical Field

[0001] This invention relates to the field of dental implant technology, and more specifically to a biomedical dental implant precision positioning guide device. Background Technology

[0002] Currently, dental implant technology is a modern oral restoration technique that uses surgical methods to restore the function of missing teeth. This technology system consists of three core components: the implant, the abutment, and the crown. This restoration method can achieve long-lasting and stable treatment results, achieving an ideal state that closely resembles natural teeth in terms of both aesthetics and chewing function. The basic procedure for implant surgery involves first inserting the artificial tooth root into the alveolar bone, then installing the abutment structure, and finally fixing the artificial crown. The significant advantages of dental implant technology are that it eliminates the need to grind down adjacent healthy teeth, effectively avoiding or reducing the use of removable dentures, and freeing patients from the constraints of traditional clasps retention methods, thus achieving a more natural, aesthetically pleasing, and comfortable restoration. Throughout the entire implant surgery, the implant guide plays a crucial role in precise guidance.

[0003] Chinese patent document (publication number: CN117860413B) discloses a guide plate assembly and its operation method for full-mouth dental implant surgery, relating to the field of dental implant technology. It includes a base guide plate, on which a positioning guide plate, an implant guide plate, and an implant guide plate are mounted. In use, the base guide plate is first installed on the patient's gums, then the positioning guide plate is installed on the base guide plate for positioning. After the base guide plate is positioned, it is fixed to the patient's alveolar bone using fixation pins. This application prevents the base guide plate from shifting during installation, improving the accuracy of subsequent drilling of threaded grooves in the alveolar bone, allowing the patient to perform normal biting during use.

[0004] In existing dental implant techniques, after the base guide plate is fixed with fixation screws, there may be a deviation between the position of the guide hole where the drill rod is located and the target point in the alveolar bone, which affects the implantation accuracy.

[0005] When drilling into the alveolar bone, multiple drill bits of different diameters are required, enlarging the hole from smallest to largest. The drill bits need to be drilled multiple times, and the process is done manually. It is difficult to ensure that the drilling depth is consistent each time. If the hole is too shallow, it will be difficult to install, and if the hole is too deep, it will cause irreparable damage to the alveolar bone.

[0006] A guide sleeve is installed between the guide hole of the planting guide plate and the drill rod. When the drill rod rotates, the circumferential rotational force may cause the guide sleeve to rotate. The rotating guide sleeve will be displaced, which will affect the accuracy of the planting hole and the safety of operation. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a precision positioning guide plate device for dental implants in biomedicine. In this invention, the positioning component achieves precise X and Y bidirectional fine-tuning control through a dual-guide rod system consisting of a slider, a first guide rod, a first guide block, and a second guide rod. A guide sleeve is screwed onto the slider, providing precise positioning guidance for the drill rod and effectively protecting the through hole from damage caused by drill rod penetration. Furthermore, the screwed engagement between the bottom external thread and the through hole's internal thread forms a height-adjustable limiting mechanism. The top limit action on the drill head prevents excessive drill rod penetration, thus protecting the alveolar bone and implant hole precision. More importantly, the guide sleeve, ring, and wing plate form a circumferentially stressed whole through a return spring, limiting groove, and limiting guide rod, producing an anti-rotation effect and resolving the safety hazard of accidental rotation of the guide sleeve due to drill rod rotation torque, which could alter the limiting height.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A biomedical dental implant precision positioning guide device includes a base guide plate and an implant guide plate located above the base guide plate. The base guide plate has an arc-shaped structure and is installed on one side of the missing teeth in the upper and lower teeth of the patient's oral cavity. Multiple positioning cylinders are integrally formed on the base guide plate. The base guide plate and the implant guide plate are fixedly connected by a connecting plate. Multiple implant orifices are formed on the implant guide plate. An adjustment opening is provided on the side of the implant guide plate near the outside of the oral cavity. The adjustment opening communicates with the implant orifice. A positioning component is detachably installed in the implant orifice. A through hole is opened on the slider of the positioning component. A toothed groove is detachably installed on the implant guide plate. The toothed groove cooperates with the side of the non-missing teeth in the upper and lower teeth of the patient's oral cavity to achieve preliminary positioning. After the preliminary positioning is completed, the toothed groove is removed and a guide sleeve is installed in the through hole.

[0010] Preferably, the upper surface of the positioning component is not higher than the upper surface of the planting guide plate, so that the two do not interfere with each other when the toothed groove is installed on the planting guide plate; the planting guide plate and the toothed groove are temporarily fixedly connected by a hand-tightened screw, which passes through the mounting hole of the toothed groove and is screwed into the through hole on the planting guide plate.

[0011] Preferably, the positioning component includes a frame and a slider. Two first guide rods are fixedly arranged parallel to each other inside the frame. First guide blocks are slidably fitted on the two first guide rods. The first guide blocks have an inverted U-shaped structure and a crossbar at the top. Two second guide rods are fixedly arranged parallel to each other between the two first guide blocks. Slider is slidably fitted on the second guide rods. An installation plate is fixed to the inner wall of the frame. The installation plate is located on one side of the slider and is fixedly connected to the two first guide rods. A push plate is fixed between the two first guide blocks. The push plate is located at the bottom of the first guide blocks and close to the installation plate. A first displacement unit is provided between the installation plate and the push plate. A second displacement unit is provided between the crossbar and the slider. The first displacement unit and the second displacement unit are respectively driven to a power switching unit. The power switching unit is driven to a drive unit.

[0012] Preferably, the first displacement unit includes a first threaded shaft and a first worm gear. The first threaded shaft is disposed between the mounting plate and the support plate. One end of the first threaded shaft passes through the support plate and is installed by a threaded connection. The smooth surface of the other end of the first threaded shaft is mounted on the mounting plate via a rotary bearing. A first worm gear is fixed to the end of the first threaded shaft near the mounting plate. The second displacement unit includes a second threaded shaft and a second worm gear. The second threaded shaft is disposed between the crossbar and the slider. One end of the second threaded shaft passes through the slider and is installed by a threaded connection. The smooth surface of the other end of the shaft is mounted on the crossbar via a rotary bearing. The end of the second threaded shaft near the crossbar is connected to a vertical reversing gearbox. The other end of the vertical reversing gearbox is connected to a second rotating shaft. A rotating shaft spline is fixed to the outer circumference of the end of the second rotating shaft away from the gearbox. The rotating shaft spline is axially slidably sleeved in the sleeve spline groove of the spline sleeve. A worm gear shaft is fixed to the other end of the spline sleeve. The worm gear shaft passes through the rear end of the mounting plate and a second worm gear is fixed thereon. The worm gear shaft and the mounting plate are connected via a rotary bearing. The first worm gear and the second worm gear are respectively driven and connected to the power switching unit.

[0013] Preferably, the power switching unit is located on the side of the mounting plate away from the slider. The switching unit includes a sliding shaft, a first hollow worm shaft, and a second hollow worm shaft. The outer peripheral surface of the first hollow worm shaft has first worm gear teeth that mesh with a first worm wheel. The outer peripheral surface of the second hollow worm shaft has second worm gear teeth that mesh with a second worm wheel. The sliding shaft slides through the two hollow worm shafts. Each of the two hollow worm shafts has a widened accommodating cavity. The accommodating cavity of the first hollow worm shaft is configured with an adjacent first spline groove and a first idler groove. The accommodating cavity of the second hollow worm shaft is configured with an adjacent second spline groove and an adjacent first idler groove. The second idler groove, the first idler groove, and the second idler groove are all located at opposite ends of the two hollow worm shafts; the outer circumferential surface of the sliding shaft is fixed with a first spline and a second spline at intervals, the first spline is located in the cavity of the first hollow worm shaft, and the second spline is located in the cavity of the second hollow worm shaft. When one of the first spline and the second spline is engaged with the corresponding spline groove, the other spline is located in the idler groove; both hollow worm shafts are rotatably mounted on the mounting plate through the second limiting seat, one end of the sliding shaft extends outward into the adjustment opening and the end is connected to the cross shaft, and the other end of the cross shaft is connected to a detachable drive unit.

[0014] Preferably, the drive unit includes a handle and a connecting ear plate fixed to one end of the cross shaft. The ear plate has a connecting hole. One end of the handle has a hand grip, and the other end of the handle is fixed with a connecting rod. The connecting rod is inclined at an angle less than 90 degrees to the handle. An annular groove is formed in the middle of the connecting rod, and the diameter of the connecting rod is smaller than the connecting hole of the connecting ear plate.

[0015] Preferably, the guide sleeve has an external thread on its bottom outer periphery, which engages with the internal thread of the through hole. A first flange is fixed on the outer periphery surface of the middle part of the guide sleeve, and a second flange is formed by the top of the guide sleeve extending radially outward. A limiting guide rod is fixed axially between the first flange and the second flange. An annular body is slidably fitted on the outer periphery of the guide sleeve between the first flange and the second flange. The limiting guide rod slides through the annular body, and a return spring is fitted on the limiting guide rod. The return spring is located between the second flange and the annular body. The outer periphery surface of the guide sleeve has scale lines. Two wing plates are symmetrically formed by extending outward in the direction of the external thread on both sides of the annular body. Several limiting grooves are symmetrically opened on the top end face of the adjusting slider along the center of the through hole. The limiting grooves are opened from high to low from the center outward. The bottom of the wing plate is inserted into the limiting groove.

[0016] Preferably, the bottom of the planting opening extends inward to form a base support, and the base support and the bottom of the frame are respectively provided with separable magnetic components that attract each other. An operation and observation opening is opened on the planting guide plate near the planting opening. The operation and observation opening is located near the outside and is formed by extending upward from the bottom of the planting guide plate. Avoidance grooves are provided on both sides of the planting opening, and anti-slip textures are fixed on the outside of the frame near the avoidance grooves.

[0017] Preferably, a support plate is fixed at the bottom of the implant guide plate, and the support surface of the support plate abuts against the inner wall of the patient's oral cavity.

[0018] Preferably, a positioning channel is formed inside the positioning cylinder, the cross-section of the positioning channel is circular, the axial direction of the positioning cylinder is horizontal, and both the positioning cylinder and the base guide plate are on the side close to the outside of the oral cavity. A fixing pin is inserted into the positioning channel of the positioning cylinder and fixed to the patient's alveolar bone.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The positioning component in this invention adopts a modular design, enabling a "plug-and-play" application mode with the implantation site on the implantation guide. It adopts an "install as needed, remove after use" application strategy, minimizing the volume of foreign objects in the oral cavity and significantly alleviating the problem of instrument crowding in the narrow oral cavity space. The modular structure greatly simplifies the maintenance of the device. When the positioning component is worn or requires precision calibration, the module can be removed separately for repair without affecting the use of the base guide and implantation guide, significantly reducing maintenance costs and downtime.

[0021] In this invention, the implant guide and the abutment guide are integrally molded and oriented. While the abutment guide is fixedly connected to the alveolar bone, the implant guide is positioned in the corresponding position in the implant area. After adaptive positioning by the adjustable positioning component, drilling is performed. This avoids the need for multiple connection and removal of the abutment guide as required in the prior art, simplifies the operation steps, reduces the probability of damaging the abutment guide and alveolar bone fixation structure, and alleviates patient discomfort.

[0022] 2. In this invention, the guide sleeve can not only adapt to the size requirements of multiple progressively thicker drill rods by setting different inner diameter specifications, thus solving the technical problem of through holes being incompatible with drill rods of different diameters, but also provide precise positioning guidance for the drill rod and effectively protect the through hole from damage caused by the drill rod penetrating through. Furthermore, the screw connection between the bottom external thread and the through hole internal thread forms a height-adjustable limiting mechanism, which, through the limiting effect on the machine head at the top, prevents the drill rod from over-drilling, thereby protecting the alveolar bone and the accuracy of the implant hole. More importantly, the guide sleeve, ring body, and wing plate form a circumferentially stressed whole through the return spring, limiting groove, and limiting guide rod, producing an anti-rotation effect and solving the problem caused by the drill rod... The rotational torque can cause the guide sleeve to rotate unexpectedly, altering the limiting height and posing a safety hazard. Simultaneously, the wing plate serves both as a limiting and fixing function and as a torque amplification function, allowing the threaded connection to be quickly converted into axial displacement, significantly improving operational efficiency. Furthermore, the multiple symmetrically arranged limiting grooves not only fix the wing plate but also unexpectedly enable rapid drainage and removal of oral fluids and debris. The fluid flow carries away the frictional heat between the drill rod and the contact components, preventing excessively high local temperatures. This innovative, multi-functional design achieves a high degree of integration of guiding, limiting, protection, heat dissipation, and anti-rotation technologies in the field of precise implant positioning.

[0023] 3. In this invention, the positioning component achieves precise micro-adjustment control in both X and Y directions through a dual-guide rod system consisting of a slider, a first guide rod, a first guide block, and a second guide rod. The first and second threaded shafts drive the first guide block and the slider to generate minute displacements, thereby achieving precise positioning of the drill rod in the horizontal plane. Furthermore, the selective engagement of the sliding shaft of the power switching unit with the spline grooves of the first spline, the second spline, and the hollow worm shaft allows for independent adjustment in one direction while maintaining free rotation in the other. In narrow and complex spaces such as the posterior alveolar ridge, the positioning component can achieve flexible shaft transmission in non-linear states through the cooperation of components such as the connecting rod, the connecting ear plate, and the cross shaft. This solves the technical problem that traditional linear transmission mechanisms cannot be effectively operated in the posterior oral cavity due to space limitations and angular constraints. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the overall installation structure of the device of the present invention;

[0025] Figure 2 This is a three-dimensional schematic diagram of the top structure of the planting guide plate of the device of the present invention;

[0026] Figure 3 This is a three-dimensional schematic diagram of the positioning component installation structure of the device of the present invention;

[0027] Figure 4 This is a three-dimensional schematic diagram of the disassembled structure of the positioning component of the device of the present invention;

[0028] Figure 5 This is a three-dimensional schematic diagram of the internal mounting structure of the device frame of the present invention;

[0029] Figure 6 This is a schematic cross-sectional view of the second rotating shaft and spline sleeve of the device of the present invention.

[0030] Figure 7 This is a three-dimensional schematic diagram of the sliding shaft and hollow worm shaft switching structure of the device of the present invention;

[0031] Figure 8 This is a schematic diagram showing the cooperation between the guide sleeve of the device of the present invention and the mobile phone component;

[0032] Figure 9 This is a schematic diagram showing the disassembled state of the handle and connecting lug of the device of the present invention;

[0033] In the diagram: Base guide plate-11; Planting guide plate-12; Toothed groove-13; Support plate-14; Positioning cylinder-15; Connecting plate-16; Hand screw-17; Mounting hole-18; Planting port-19; Frame-20; Operation observation port-21; Adjustment opening-22; Slider-23; Guide sleeve-24; Cross shaft-25; Clearance groove-26; Limiting groove-27; Through hole-28; External thread-29; Ring-30; Wing plate-31; First guide block-32; First guide rod-33; Push plate-34; First threaded shaft-35; First worm gear-36; First worm gear tooth-37; Sliding shaft-38; Mounting plate-39; Second guide rod-40; Horizontal Rod-41; Second threaded shaft-42; Vertical reversing gearbox-43; Second rotating shaft-44; Splined sleeve-45; First limiting seat-46; Worm gear shaft-47; Second worm gear-48; Second worm gear tooth-49; Second limiting seat-50; Sleeve spline groove-51; Rotating shaft spline-52; First spline groove-53; First idle groove-54; First spline-55; Second idle groove-56; Second spline groove-57; Second spline-58; First flange-59; Limiting guide rod-60; Return spring-61; Scale line-62; Machine head-63; Drill rod-64; Mobile phone assembly-65; Connecting ear plate-66; Hand rod-67; Connecting rod-68; Base support-69. Detailed Implementation

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

[0035] Contents not described in detail in this specification are prior art known to those skilled in the art. In the description of this invention, it should be understood that terms such as "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Figures 1-9 As shown, a biomedical dental implant precision positioning guide device includes a base guide plate 11 and an implant guide plate 12 located above the base guide plate 11. The base guide plate 11 has an arc-shaped structure and is installed on one side of the missing teeth in the upper and lower teeth of the patient's oral cavity. Multiple positioning cylinders 15 are integrally formed on the base guide plate 11. The base guide plate 11 and the implant guide plate 12 are fixedly connected by a connecting plate 16. Multiple implant orifices 19 are formed on the implant guide plate 12. An adjustment opening 22 is provided on the side of the implant guide plate 12 near the outside of the oral cavity. The adjustment opening 22 is connected to the implant orifice 19. A positioning component is detachably installed in the implant orifice 19. A through hole 28 is opened on the slider 23 of the positioning component. A toothed groove 13 is detachably installed on the implant guide plate 12. The toothed groove 13 cooperates with the side of the non-missing teeth in the upper and lower teeth of the patient's oral cavity to achieve preliminary positioning. After the preliminary positioning is completed, the toothed groove 13 is removed and a guide sleeve 24 is installed in the through hole 28.

[0037] The positioning component in this invention adopts a modular design, enabling a "plug-and-play" application mode with the implantation port 19 on the implantation guide 12. It adopts an application strategy of "installing on demand and removing after use," minimizing the volume of foreign objects in the oral cavity and significantly alleviating the problem of instrument crowding in the narrow oral cavity. The modular structure greatly simplifies the maintenance of the device. When the positioning component is worn or requires precision calibration, the module can be removed for repair without affecting the use of the base guide 11 and the implantation guide 12, significantly reducing maintenance costs and downtime.

[0038] In this invention, the positioning component achieves precise micro-adjustment control in both X and Y directions through a dual-guide rod system consisting of a slider 23, a first guide rod 33, a first guide block 32, and a second guide rod 40. The first threaded shaft 35 and the second threaded shaft 42 drive the first guide block 32 and the slider 23 to generate minute displacements, thereby achieving precise positioning of the drill rod in the horizontal plane. Furthermore, the selective engagement of the sliding shaft 38 of the power switching unit with the first spline 55, the second spline 58, and the spline grooves 53 and 57 within the hollow worm shaft allows for independent adjustment in one direction while maintaining free rotation in the other. Moreover, when the positioning component is located in narrow and complex spaces such as the posterior alveolar ridge, flexible shaft transmission in a non-linear state can be achieved through the cooperation of components such as the connecting rod 68, the connecting ear plate 66, and the cross shaft 25. This solves the technical problem that traditional linear transmission mechanisms cannot be effectively operated in the posterior oral cavity region due to space limitations and angular constraints.

[0039] In the existing technology, a detachable positioning guide and an implant guide are set up, which are connected to a fixed base guide in sequence and then removed. This increases the complexity of the operation and the probability of damaging the base guide and alveolar bone fixation structure, thus increasing the patient's discomfort.

[0040] In this invention, the implantation guide plate and the base guide plate are integrally formed and oriented. While the base guide plate is fixedly connected to the pressure groove bone, the implantation guide plate is positioned in the corresponding position of the implantation area. After adaptive adjustment and positioning by the adjustable positioning component, drilling is performed.

[0041] Furthermore, the upper plane of the positioning component is not higher than the upper plane of the planting guide plate 12, so that the two do not interfere when the toothed groove 13 is installed on the planting guide plate 12; the planting guide plate 12 and the toothed groove 13 are temporarily fixedly connected by a hand screw 17, which passes through the mounting hole 18 of the toothed groove 13 and is screwed into the through hole 28 on the planting guide plate 12.

[0042] The toothed groove 13 is made of a gel-like material produced by fully mixing dental calculus powder and water. The mounting hole 18 on the toothed groove 13 is used to temporarily fix it to the implant guide plate 12. The through hole 28 on the implant guide plate 12 is screwed in by passing a hand screw 17 through the mounting hole 18 of the toothed groove 13. The through hole used for connection is set in the area without upper teeth.

[0043] During the procedure, the tooth-shaped alveolar body 13 is precisely fitted with the patient's healthy side teeth. Then, the doctor guides the patient to perform the closing action of the upper and lower jaws. After the patient completes the biting operation, the patient explores the best comfortable position by slightly moving the upper and lower jaws. When the patient successfully adjusts the base guide plate 11 to the appropriate position, the doctor connects the fixed pin through the positioning channel in the positioning tube 15 to the alveolar bone, ensuring that the patient's upper and lower jaws are tightly closed.

[0044] During the assembly process, the patient's upper and lower jaws remain closed. Therefore, when the physician uses fixation pins to anchor the base guide plate 11, the positional deviation of the base guide plate 11 can be effectively avoided, ensuring positioning accuracy.

[0045] After the base guide plate 11 is successfully anchored to the patient's gingival tissue by the fixation pin, the toothed groove 13 is separated from the surface of the implant guide plate 12; then the connection of the hand-tightening screw 17 is released, the toothed groove 13 is removed, and the guide sleeve 24 is screwed into the through hole 28 in the implant opening 19 that needs to be treated. After adjusting and aligning the position of the guide sleeve 24, the drilling process is finally performed.

[0046] Furthermore, the positioning component includes a frame 20 and a slider 23. Two first guide rods 33 are fixedly arranged in parallel at intervals inside the frame 20. First guide blocks 32 are slidably sleeved on the two first guide rods 33 respectively. The first guide blocks 32 have an inverted U-shaped structure and a crossbar 41 at the top. Two second guide rods 40 are fixedly arranged in parallel at intervals between the two first guide blocks 32. The slider 23 is slidably sleeved on the second guide rods 40. An mounting plate 39 is fixedly installed on the inner wall of the frame 20. The mounting plate 39 is located on one side of the slider 23 and is fixedly connected to the two first guide rods 33. A push plate 34 is fixed between the two first guide blocks 32. The push plate 34 is located at the bottom of the first guide blocks 32 and close to the mounting plate 39. A first displacement unit is provided between the mounting plate 39 and the push plate 34. A second displacement unit is provided between the crossbar 41 and the slider 23. The first displacement unit and the second displacement unit are respectively driven to a power switching unit. The power switching unit is driven to a drive unit.

[0047] The first guide rod 33 and the second guide rod 40 are vertically arranged and used to adjust the planar position of the slider, that is, the X and Y coordinate positions.

[0048] Further, the first displacement unit includes a first threaded shaft 35 and a first worm gear 36. The first threaded shaft 35 is disposed between the mounting plate 39 and the support plate 34. One end of the first threaded shaft 35 passes through the support plate 34 and is installed by a threaded connection. The smooth surface of the other end of the first threaded shaft 35 is mounted on the mounting plate 39 via a rotary bearing. The first worm gear 36 is fixed to the end of the first threaded shaft 35 near the mounting plate 39. The second displacement unit includes a second threaded shaft 42 and a second worm gear 48. The second threaded shaft 42 is disposed between the crossbar 41 and the slider 23. One end of the second threaded shaft 42 passes through the slider 23 and is installed by a threaded connection. The smooth surface of the other end of the 42 is mounted on the crossbar 41 via a rotary bearing. The end of the second threaded shaft 42 near the crossbar 41 is connected to a vertical reversing gearbox 43. The other end of the vertical reversing gearbox 43 is connected to a second rotating shaft 44. A rotating shaft spline 52 is fixed on the outer periphery of the end of the second rotating shaft 44 away from the gearbox. The rotating shaft spline 52 is axially slidably sleeved in the sleeve spline groove 51 of the spline sleeve 45. A worm gear shaft 47 is fixed on the other end of the spline sleeve 45. The worm gear shaft 47 passes through the rear end of the mounting plate 39 and a second worm gear 48 is fixed thereon. The worm gear shaft 47 and the mounting plate 39 are connected by a rotary bearing. The first worm gear 36 and the second worm gear 48 are respectively connected to the power switching unit.

[0049] It should be noted that the swivel bearing is a thrust ball bearing, which is used to bear the tensile or thrust forces of the shaft. Alternatively, an angular contact ball bearing can be selected, which can bear both axial and radial forces simultaneously.

[0050] Neither the first threaded shaft 35 nor the second threaded shaft 42 enters the projection plane of the through hole 28, thus avoiding interference with the drill rod 64. Since the positioning component of the present invention is for fine adjustment of the drill rod position, the length that needs to be adjusted is limited. The travel length of the threaded shaft can be satisfied by the distance of the inner wall on one side of the slider 23.

[0051] Among them, the mounting plate 39 and the crossbar 41 are thickened to increase the contact area of ​​the threaded shaft surface and improve the stability of the structure;

[0052] A second limiting seat 50 is fitted onto the hollow worm shaft. Since the worm shaft sleeve only needs to rotate, shoulders are provided at both ends of the worm shaft sleeve, and the rotation is limited by the second limiting seat 50.

[0053] There is a relative horizontal displacement between the spline sleeve 45 and the first guide block 32. The spline sleeve 45 will also rotate with the second worm gear 48. Therefore, the first limit seat 46 is sleeved on the outer circumference of the spline sleeve 45 for rotational sliding fit to ensure stable rotation and axial sliding.

[0054] The vertical reversing gearbox 43 has two bevel gears inside, which change the rotation transmission angle of the shaft by 90 degrees. The vertical reversing gearbox 43 in this invention is a miniature structure that can be customized for commercial use and belongs to the prior art. The specific working principle and structure will not be described in detail here.

[0055] The vertical reversing gearbox 43 is fixedly mounted on the crossbar 41. The third limiting seat, which is sleeved on the second rotating shaft 44, allows the rotating shaft to rotate while limiting the radial displacement of the rotating shaft, thereby improving the structural stability.

[0056] Furthermore, the power switching unit is located on the side of the mounting plate 39 away from the slider 23. The switching unit includes a sliding shaft 38, a first hollow worm shaft, and a second hollow worm shaft. The outer peripheral surface of the first hollow worm shaft has a first worm gear tooth 37, which meshes with a first worm wheel 36. The outer peripheral surface of the second hollow worm shaft has a second worm gear tooth 49, which meshes with a second worm wheel 48. The sliding shaft 38 slides through the two hollow worm shafts. Both hollow worm shafts have widened accommodating cavities. The accommodating cavity of the first hollow worm shaft is configured as an adjacent first spline groove 53 and a first idler groove 54. The accommodating cavity of the second hollow worm shaft is configured as an adjacent second spline groove 57 and a second idler groove 54. The idle slot 56, the first idle slot 54, and the second idle slot 56 are all located at opposite ends of the two hollow worm shafts; the outer peripheral surface of the sliding shaft 38 is fixed with a first spline 55 and a second spline 58 at intervals. The first spline 55 is located in the cavity of the first hollow worm shaft, and the second spline 58 is located in the cavity of the second hollow worm shaft. When one spline of the first spline 55 and the second spline 58 is engaged with the corresponding spline slot, the other spline is located in the idle slot; the two hollow worm shafts are rotatably mounted on the mounting plate 39 through the second limiting seat 50. One end of the sliding shaft 38 extends outward into the adjustment opening 22 and is connected to the cross shaft 25. The other end of the cross shaft 25 is connected to a detachable drive unit;

[0057] It should be noted that the slide shaft 38 is connected to the drive unit. When the slide shaft 38 is driven by the drive unit, only one of the two splines on the slide shaft 38 forms a transmission connection with the spline groove inside the corresponding hollow worm shaft. The other is located in the idle groove. The hollow worm shaft that forms a transmission connection is transmitted to the corresponding worm wheel through the meshing of the worm wheel teeth. The movement is generated through the threaded shaft transmission structure, thereby adjusting the position of the slider 23 on the plane, and thus changing the position of the drill rod inside the threaded hole of the slider, so that it is aligned with the target point on the alveolar bone.

[0058] In the device of the present invention, the sliding shaft 38 is inserted into the hollow worm shaft so that the spline and spline groove near the inside engage to form an initial setting. This facilitates subsequent adjustment by the drive unit. After adjusting the planar position first, the sliding shaft 38 is pulled outward to further adjust the planar position in another direction.

[0059] When the positioning component is located inside the oral cavity and is not conducive to direct operation, an angle of tilt will be generated between the two drive shafts. The cross shaft 25 can be driven between the two drive shafts and maintain a certain angle of tilt.

[0060] The cross-shaped pivot has a cross-shaped three-dimensional structure with its four journals arranged in a "+" shape: two journals are located on the same straight line (e.g., horizontally), and the other two journals are located on a straight line perpendicular to it (e.g., vertically), forming two mutually perpendicular axes in space. Each pair of opposite journals is connected to the bearing hole of a universal joint fork. When the drive shaft rotates, the drive universal joint fork drives the cross-shaped pivot to rotate around its center point. Due to the geometric constraints of the cross-shaped pivot, its other pair of journals will necessarily drive the driven universal joint fork to rotate synchronously, thus transmitting the rotational motion from the drive shaft to the driven shaft. In this process, the cross-shaped pivot takes advantage of the characteristic that its two perpendicular axes can swing relative to each other, so that even if there is an angular deviation between the two shafts, the torque can still be reliably transmitted through the hinged connection between the cross-shaped pivot and the universal joint fork. The cross-shaped pivot acts as both a force transmission medium and a motion conversion hub, compensating for the angular difference between the two shafts through its own composite motion in space, thus realizing power transmission under non-coaxial conditions.

[0061] At the spline groove and spline joint, an involute curve is set on one side and a reduction curve is set on the other side, which facilitates a quick and smooth cut-in when the two come close together.

[0062] Furthermore, the drive unit includes a handle 67 and a connecting ear plate 66 fixed to one end of the cross pivot 25. The ear plate 66 has a connecting hole. One end of the handle 67 has a hand grip, and the other end of the handle 67 is fixed with a connecting rod 68. The connecting rod 68 is inclined at an angle to the handle 67, which is less than 90 degrees. An annular groove is formed in the middle of the connecting rod 68, and the diameter of the connecting rod 68 is smaller than the connecting hole of the connecting ear plate 66.

[0063] In use, the hand-held part of the lever 67 is located outside the oral cavity, and the other end of the lever 67 is located inside the oral cavity. The connecting rod 68 of the lever 67 is inserted into the connecting hole of the ear plate 66. The ear plate 66 can be pulled outward or pushed inward by the lever 67, which causes the sliding shaft 38 to generate axial displacement inside the two hollow worm shafts, so that the spline and the corresponding spline groove are engaged, thereby selecting to adjust the X position or Y position on the horizontal plane. Furthermore, the inner wall of the annular groove is made to fit with the ear plate. The lever 67 is manually rotated to drive the ear plate 66, the cross shaft 25 and the sliding shaft 38 to rotate. Through the worm gear structure, the threaded shaft transmission structure is driven to generate displacement, which further adjusts the X position or Y position of the slider 23 on the horizontal plane, thereby adjusting the horizontal position of the drill rod in the threaded hole of the slider 23, which is conducive to aligning the drill rod with the target point on the alveolar bone.

[0064] It should be noted that the connecting rod 68 is set to be extended to enhance the stability of the connecting rod 68 and the ear plate 66 and prevent them from separating. Since the adjustment opening 22 is a groove structure, the cross shaft 25 will not come into contact with the inner wall of the oral cavity when it is rotated within it.

[0065] Furthermore, the bottom outer periphery of the guide sleeve 24 is provided with an external thread 29, which engages with the internal thread of the through hole 28. A first flange 59 is fixed on the outer periphery surface of the middle part of the guide sleeve 24, and a second flange is formed by radially extending outward from the top of the guide sleeve 24. A limiting guide rod 60 is fixed axially between the first flange 59 and the second flange. An annular body 30 is slidably sleeved on the outer periphery of the guide sleeve 24 between the first flange 59 and the second flange, and the limiting guide rod 60 slides through it. A ring body 30 is provided, and a return spring 61 is sleeved on the limiting guide rod 60. The return spring 61 is located between the second flange and the ring body 30. The outer peripheral surface of the guide sleeve 24 is provided with scale lines 62. The two sides of the ring body 30 extend symmetrically in the direction of the external thread 29 to form two wing plates 31. The top end face of the adjusting slider 23 is symmetrically provided with several limiting grooves 27 along the center of the through hole 28. The limiting grooves 27 are opened from the center to the outside from high to low. The bottom of the wing plate 31 is inserted into the limiting groove 27.

[0066] It should be noted that a head 63 is provided at the end of the mobile phone component 65, and a drill rod 64 is fixed at the bottom of the head 63. The drill rod 64 slides through the inside of the guide sleeve 24, and the bottom end of the drill rod 64 is close to the alveolar bone for drilling.

[0067] Since the implant hole is made in the alveolar bone, multiple drill rods with progressively larger diameters are needed to enlarge the hole. The through hole 28 cannot be adapted to drill rods of different diameters, and the through hole 28 will be damaged by the drill rods.

[0068] A guide sleeve 24 is provided between the through hole 28 and the drill rod 64. Multiple guide sleeves 24 with different inner diameters are provided to accommodate drill rods of different diameters. The guide sleeve 24 not only positions and guides the drill rod, but also prevents the through hole 28 from being damaged by the drill rod. The guide sleeve 24 is made of hard metal.

[0069] Because multiple drill rods of different diameters are required to enlarge the implant hole multiple times, and the handpiece assembly is operated manually, it is difficult to ensure that the drilling depth is consistent each time. If the hole is too shallow, it will be difficult to install; if the hole is too deep, it will cause irreversible damage to the alveolar bone.

[0070] The bottom of the guide sleeve 24 is provided with an external thread that engages with the internal thread of the through hole 28 to form a height-adjustable limiting component. The top of the guide sleeve 24 limits the machine head 63 to prevent excessive drilling of the drill rod and to protect the alveolar bone and the accuracy of the implant hole.

[0071] During the rotation of the drill rod, the circumferential rotational force may cause the guide sleeve 24 to rotate. The rotating guide sleeve 24 and the screwed through hole 28 will have relative displacement, thereby changing the limiting height and drilling depth of the guide sleeve 24, which may affect the accuracy of the implant hole or the safety of the alveolar bone.

[0072] The return spring 61 exerts a downward thrust on the ring 30, causing the two wing plates 31 to extend into the limiting groove 27, which prevents the wing plates 31 from rotating. Since the limiting guide rod 60 restricts the circumferential rotation of the ring 30, the ring 30, wing plates 31, and guide sleeve 24 form a unified force-bearing structure in the circumferential direction, preventing them from being rotated by the drill pipe and thus damaging the limiting dimensions. The scale line 62, in conjunction with the ring 30, indicates the drilling depth set by the drill pipe, which is intuitive and reliable.

[0073] While the wing plate 31 is used for fixed positioning, it also serves as a screw-on lug, reducing the need for multiple structural setups and saving space and materials. When it is necessary to rotate the guide sleeve 24, the ring 30 or the wing plate 31 is lifted to disengage the wing plate 31 from the limiting groove 27. Rotating the wing plate 31 drives the guide sleeve 24, and the wing plate 31 amplifies the torque, enabling the threaded connection to be quickly converted into displacement, thus improving the efficiency of operation.

[0074] The limiting groove 27 is arranged symmetrically and tilted outwards, which facilitates the rapid flow of liquid or debris from the oral cavity through the positioning component and its removal through the suction tube. The rapidly flowing liquid will carry away the heat generated between the drill rod and the contact component, preventing excessive local stability in the oral cavity and ensuring the safety of the dental implant process.

[0075] In this invention, the guide sleeve 24 can not only adapt to the size requirements of multiple progressively thicker drill rods 64 by setting different inner diameter specifications, thus solving the technical problem that the through hole 28 cannot be compatible with drill rods of different diameters, but also provide precise positioning guidance for the drill rod 64 and effectively protect the through hole 28 from damage caused by drill rod penetration. Furthermore, the screw connection between the bottom external thread and the internal thread of the through hole 28 forms a height-adjustable limiting mechanism, which, through the limiting effect on the head 63 at the top, prevents the drill rod 64 from over-drilling, thereby protecting the alveolar bone and the accuracy of the implant hole. More importantly, the guide sleeve 24, the ring body 30, and the wing plate 31 form a circumferentially stressed whole through the return spring 61, the limiting groove 27, and the limiting guide rod 60, producing an anti-rotation effect. This design eliminates the safety hazard of the guide sleeve 24 unexpectedly rotating and changing the limiting height due to the rotational torque of the drill rod 64. At the same time, the wing plate 31 can not only achieve the limiting and fixing function, but also act as a screw-in ear plate to provide torque amplification function, so that the threaded connection can be quickly converted into axial displacement, which significantly improves the operating efficiency. The multiple symmetrical settings of the limiting groove 27 not only solve the function of fixing the wing plate 31, but also unexpectedly realize the function of rapid drainage and removal of oral fluid and debris. The fluid flow carries away the frictional heat between the drill rod 64 and the contact parts, avoiding excessive local temperature. This innovative design with multiple functions achieves a high degree of integration of multiple technical effects such as guidance, limiting, protection, heat dissipation and anti-rotation in the field of dental implant precision positioning.

[0076] Furthermore, the bottom of the planting port 19 extends inward to form a base 69. The base 69 and the bottom of the frame 20 are respectively provided with separable magnetic components that attract each other. An operation observation port 21 is opened on the planting guide plate 12 near the planting port 19. The operation observation port 21 is close to the outside and is formed by extending upward from the bottom of the planting guide plate 12. A clearance groove 26 is provided on both sides of the planting port 19. Anti-slip textures are fixed on the outside of the frame 20 near the clearance groove 26.

[0077] It should be noted that the implant guide plate 12 is made of transparent resin, which is conducive to observing the situation near the implant site. The through-hole 21 is set to further enhance the observation range and avoid blind spots caused by the covering of oral fluid or impurities. A removal and fixation component is set between the positioning component and the implant site 19 to facilitate the insertion and removal of the positioning component. When this positioning component is needed for drilling positioning, the positioning component is placed into the implant site 19. When it is not needed, it can be left out or removed, reducing the downward drainage problems caused by the covering of oral fluid or impurities, while reducing foreign objects in the oral cavity and reducing patient discomfort.

[0078] After drilling the holes in the alveolar bone, the implant is placed into the holes, and a sealing cap is installed on the implant. Next, the gingival wound is sutured, and recovery takes 3-6 months for the alveolar bone to integrate with the implant. Once the alveolar bone and implant have integrated, the corresponding gingival area is cut open, the sealing cap is removed, and replaced with the abutment. Recovery takes about 2 weeks for the gingival wound to heal. After the gingival wound has healed, an impression is taken from the stabilized abutment and gingiva to fabricate the crown, and finally, the crown is installed.

[0079] Furthermore, a support plate 14 is fixedly provided at the bottom of the implantation guide plate 12, and the support surface of the support plate 14 abuts against the inner wall of the patient's oral cavity.

[0080] It should be noted that the base guide plate 11 is supported by the support plate 14, thereby reducing the pressure of the base guide plate 11 on the gums; when drilling, blood will flow from the patient's wound. When the fluid in the mouth affects the dentist's surgical operation, the dentist will use a suction tube to aspirate the fluid.

[0081] During the surgical procedure, the dentist makes an incision at the top of the gum below the observation port 21 to expose the alveolar bone inside the gum, improving the dentist's ease of manipulation of the alveolar bone. When space is limited, a vertical incision knife is used.

[0082] Furthermore, a positioning channel is formed inside the positioning cylinder 15. The positioning channel has a circular cross-section. The axis of the positioning cylinder 15 is horizontally positioned. Both the positioning cylinder 15 and the base guide plate 11 are located on the side closest to the outside of the oral cavity. A fixing pin is inserted into the positioning channel of the positioning cylinder 15 and is fixed to the patient's alveolar bone.

[0083] It should be noted that both the positioning tube 15 and the base guide plate 11 are located on one side of the alveolar bone and close to the outside of the oral cavity. When in use, the fixation pin is nailed to the patient's alveolar bone after passing through the positioning channel of the positioning tube 15, and the base guide plate 11 and the implant guide plate 12 are positioned and fixed. The implant guide plate 12 is located above the alveolar bone, and the implant opening 19 is located directly above the target point of the alveolar bone to be opened.

[0084] During the implantation of fixation pins, due to the varying sizes of different pins, the design must ensure that the inner diameter of the positioning channel always exceeds the outer diameter of the pin. This guarantees that the pin can pass smoothly through the positioning cylinder 15. To prevent positional deviation during the pin's passage through the positioning cylinder 15, spring clips are placed within the positioning channel inside the cylinder 15. Multiple spring clips are evenly distributed along the central axis of the positioning cylinder 15, and the inner diameter channel formed by these spring clips gradually narrows from 0.8 cm to 0.1 cm. According to current technical standards, the minimum outer diameter of a fixation pin is 0.1 cm. Therefore, when the smallest pin passes through the spring clips, the multiple spring clips clamp the pin, ensuring that the three fixation pins are stably implanted horizontally into the patient's alveolar bone.

[0085] Procedure for using a device to position dental implants:

[0086] Phase 1: Equipment Installation and Preliminary Positioning

[0087] Base guide plate installation - The arc-shaped base guide plate 11) is installed on one side of the missing tooth in the upper and lower teeth of the patient's oral cavity. The toothed groove 13) is installed on the implant guide plate 12). Temporary fixation is achieved by screwing the through hole 28) on the implant guide plate 12) after the hand screw 17) passes through the mounting hole 18) of the toothed groove 13).

[0088] Preliminary positioning operation - the tooth-shaped alveolar body 13) is precisely fitted with the patient's healthy side teeth. The doctor guides the patient to perform the closing action of the upper and lower jaws. After the patient completes the biting operation, the upper and lower jaws are slightly moved to explore the best comfortable position.

[0089] Anchoring and positioning - When the patient successfully adjusts the base guide plate 11) to the appropriate position, the physician connects the fixation pin through the positioning channel in the positioning tube 15) to the alveolar bone, ensuring that the patient's upper and lower jaws are tightly closed. During the assembly process, the patient's upper and lower jaws remain closed to ensure positioning accuracy.

[0090] Phase Two: Guide Sleeve Installation

[0091] Removal of the toothed alveolar body - After the base guide plate 11) is successfully anchored to the patient's gingival tissue by the fixation pin, the toothed alveolar body 13) is separated from the surface of the implant guide plate 12) and removed by unscrewing the connection of the hand screw 17).

[0092] Install positioning components - Install positioning components in the planting opening 19) that needs to be treated;

[0093] Guide sleeve installation - The guide sleeve 24) is installed in the through hole 28) of the slider 23) by screw connection. The external thread 29) at the bottom of the guide sleeve 24) is engaged with the internal thread of the through hole 28). The return spring 61) generates a downward pushing force on the ring 30) so that the wing plate 31) extends into the limiting groove 27) to prevent rotation.

[0094] Depth adjustment setting - The limit height is adjusted by the engagement of the external thread on the guide sleeve 24) and the internal thread of the through hole 28). When the scale line 62) and the ring body 30) are engaged to display the scale, it is convenient for height adjustment. When it is necessary to rotate the guide sleeve 24), lift the ring body 30) or the wing plate 31) to make the wing plate 31) disengage from the limit groove 27), and then hold the wing plate 31 to rotate.

[0095] Phase 3: Precise Positioning and Drilling

[0096] Fine-tuning positioning operation – Insert the drill rod 64 of the mobile phone component 65 into the guide sleeve 24, determine the displacement point to be adjusted, and then remove it; then insert the connecting rod 68) of the hand rod 67) into the connecting hole of the connecting ear plate 66), and pull the ear plate 66) outward or push it inward by the hand rod 67) to drive the sliding shaft 38) to generate axial displacement inside the two hollow worm shafts, so that the spline and the corresponding spline groove form a fit. Select only one of them and adjust the X or Y position on the horizontal plane. Manually rotate the hand rod 67) to drive the ear plate 66), the cross shaft 25) and the sliding shaft 38) to rotate. The sliding shaft 38) drives the external worm to rotate through the spline fit. Through the worm wheel and worm structure, the threaded shaft transmission structure is driven to generate the horizontal X or Y position of the displacement adjustment slider 23). By adjusting the position of the alignment guide sleeve 24) to align it with the target point on the alveolar bone, the position of the drill rod is adjusted.

[0097] Drilling operation - The drill rod 64) on the mobile phone component head 63) is slidably inserted into the guide sleeve 24) for drilling. Multiple drill rods with progressively thicker diameters are used to enlarge the hole. The guide sleeve 24) with different inner diameters is replaced to adapt to drill rods of different diameters.

[0098] Phase 4: Implant placement and follow-up care

[0099] Implant placement - After drilling, the implant is placed into the implant hole, a sealing cap is installed on the implant, and the gingival wound is sutured. It takes 3-6 months for the alveolar bone to integrate with the implant.

[0100] Base installation - After the alveolar bone is fitted to the implant, the corresponding gingival area is cut, the sealing cap is removed and replaced with the base, and the recovery period is about 2 weeks to allow the gingival wound to heal.

[0101] Crown fabrication and installation - After the gum wound has healed, an impression is taken of the stabilized abutment and gums to fabricate the crown and finally install it to complete the entire dental implant surgery.

[0102] The present invention has been illustrated through the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that all related improvements to the present invention fall within the protection and disclosure scope of the present invention.

Claims

1. A biomedical implant precision positioning guide device, comprising a base guide plate (11) and an implant guide plate (12) located above the base guide plate (11), characterized in that, The base guide plate (11) is an arc-shaped structure and is installed on one side of the missing teeth in the upper and lower teeth of the patient's oral cavity. Multiple positioning cylinders (15) are integrally formed on the base guide plate (11). The base guide plate (11) and the implant guide plate (12) are fixedly connected by a connecting plate (16). Multiple implant orifices (19) are formed on the implant guide plate (12). An adjustment opening (22) is provided on the side of the implant guide plate (12) near the outside of the oral cavity. The adjustment opening (22) is connected to the implant orifice (19). A positioning component is detachably installed in the implant orifice (19). A through hole (28) is opened on the slider (23) of the positioning component. A toothed groove (13) is detachably installed on the implant guide plate (12). The toothed groove (13) cooperates with the side of the non-missing teeth in the upper and lower teeth of the patient's oral cavity to achieve preliminary positioning. After the preliminary positioning is completed, the toothed groove (13) is removed and a guide sleeve (24) is installed in the through hole (28). The first displacement unit and the second displacement unit of the positioning component are respectively driven to the power switching unit, and the power switching unit is driven to the drive unit; The power switching unit includes a sliding shaft (38), a first hollow worm shaft, and a second hollow worm shaft. The outer peripheral surface of the first hollow worm shaft has a first worm gear tooth (37), which meshes with a first worm wheel (36). The outer peripheral surface of the second hollow worm shaft has a second worm gear tooth (49), which meshes with a second worm wheel (48). The sliding shaft (38) slides through the two hollow worm shafts. Both hollow worm shafts have widened accommodating cavities. The accommodating cavity of the first hollow worm shaft is configured as an adjacent first spline groove (53) and a first idler groove (54). The accommodating cavity of the second hollow worm shaft is configured as an adjacent second spline groove (57) and a second idler groove (56). The idle slots (56) are located at opposite ends of the two hollow worm shafts; the outer peripheral surface of the sliding shaft (38) is fixed with a first spline (55) and a second spline (58) at intervals. The first spline (55) is located in the cavity of the first hollow worm shaft, and the second spline (58) is located in the cavity of the second hollow worm shaft. When one of the splines (55) and the second spline (58) is engaged with the corresponding spline slot, the other spline is located in the idle slot; the two hollow worm shafts are rotatably mounted on the mounting plate (39) through the second limiting seat (50). One end of the sliding shaft (38) extends outward into the adjustment opening (22) and is connected to the cross shaft (25). The other end of the cross shaft (25) is connected to a detachable drive unit. The drive unit includes a lever (67) and a connecting ear plate (66) fixed at one end of the cross pivot (25). The ear plate (66) has a connecting hole. One end of the lever (67) has a hand grip. The other end of the lever (67) is fixed with a connecting rod (68). The connecting rod (68) is inclined at an angle to the lever (67) with an angle less than 90 degrees. An annular groove is opened in the middle of the connecting rod (68). The diameter of the connecting rod (68) is smaller than the connecting hole of the connecting ear plate (66). The bottom outer periphery of the guide sleeve (24) is provided with an external thread (29), which engages with the internal thread of the through hole (28). A first flange (59) is fixed on the outer periphery surface of the middle part of the guide sleeve (24). A second flange is formed by radially extending outward from the top of the guide sleeve (24). A limiting guide rod (60) is fixed axially between the first flange (59) and the second flange. An annular body (30) is slidably fitted on the outer periphery of the guide sleeve (24) between the first flange (59) and the second flange. The limiting guide rod (60) slides through the annular body (30). A reset spring (61) is sleeved on the limiting guide rod (60). The reset spring (61) is located between the second flange and the ring body (30). The outer peripheral surface of the guide sleeve (24) is provided with scale lines (62). The two sides of the ring body (30) extend symmetrically in the direction of the external thread (29) to form two wing plates (31). The top end face of the adjusting slider (23) is symmetrically provided with several limiting grooves (27) along the center of the through hole (28). The limiting grooves (27) are opened from the center to the outside from high to low. The bottom of the wing plate (31) is inserted into the limiting groove (27).

2. The biomedical dental implant precision positioning guide device according to claim 1, characterized in that, The upper surface of the positioning component is not higher than the upper surface of the planting guide plate (12). When the toothed groove (13) is installed on the planting guide plate (12), the two do not interfere with each other. The planting guide plate (12) and the toothed groove (13) are temporarily fixedly connected by a hand screw (17). The hand screw (17) passes through the mounting hole (18) of the toothed groove (13) and is screwed into the through hole (28) on the planting guide plate (12).

3. The biomedical dental implant precision positioning guide device according to claim 1, characterized in that, The positioning component includes a frame (20) and a slider (23). Two first guide rods (33) are fixedly arranged parallel to each other inside the frame (20). First guide blocks (32) are slidably fitted onto the two first guide rods (33). Each first guide block (32) has an inverted U-shaped structure and a crossbar (41) at its top. Two second guide rods (40) are fixedly arranged parallel to each other between the two first guide blocks (32). Slider blocks (23) are slidably fitted onto the second guide rods (40). 20) An installation plate (39) is fixedly installed on the inner wall. The installation plate (39) is located on one side of the slider (23) and is fixedly connected to the two first guide rods (33). A push plate (34) is fixed between the two first guide blocks (32). The push plate (34) is located at the bottom of the first guide block (32) and close to the side of the installation plate (39). A first displacement unit is set between the installation plate (39) and the push plate (34). A second displacement unit is set between the crossbar (41) and the slider (23).

4. The biomedical dental implant precision positioning guide device according to claim 3, characterized in that, The first displacement unit includes a first threaded shaft (35) and a first worm gear (36). The first threaded shaft (35) is disposed between the mounting plate (39) and the support plate (34). One end of the first threaded shaft (35) passes through the support plate (34) and is installed by a threaded connection. The smooth surface of the other end of the first threaded shaft (35) is mounted on the mounting plate (39) through a rotating bearing. The first worm gear (36) is fixed on the end of the first threaded shaft (35) near the mounting plate (39). The second displacement unit includes a second threaded shaft (42) and a second worm gear (48). The second threaded shaft (42) is disposed between the crossbar (41) and the slider (23). One end of the second threaded shaft (42) passes through the slider (23) and is installed by a threaded connection. The smooth surface of the other end of the first threaded shaft (35) is mounted on the mounting plate (39) through a rotating bearing. The first worm gear (36) is fixed on the end of the first threaded shaft (35) near the mounting plate (39). The smooth surface at the other end is mounted on the crossbar (41) via a rotating bearing. The end of the second threaded shaft (42) near the crossbar (41) is connected to a vertical reversing gearbox (43). The other end of the vertical reversing gearbox (43) is connected to a second rotating shaft (44). A rotating shaft spline (52) is fixed on the outer periphery of the end of the second rotating shaft (44) away from the gearbox. The rotating shaft spline (52) is axially slidably sleeved in the sleeve spline groove (51) of the spline sleeve (45). A worm gear shaft (47) is fixed at the other end of the spline sleeve (45). A second worm gear (48) is fixed at the rear end of the worm gear shaft (47) through the mounting plate (39). The worm gear shaft (47) and the mounting plate (39) are connected by a rotating bearing. The first worm gear (36) and the second worm gear (48) are respectively connected to the power switching unit.

5. The biomedical dental implant precision positioning guide device according to claim 4, characterized in that, The power switching unit is located on the side of the mounting plate (39) away from the slider (23).

6. The biomedical dental implant precision positioning guide device according to claim 4, characterized in that, The bottom of the planting port (19) extends inward to form a base (69). The bottom of the base (69) and the frame (20) are respectively provided with separable magnetic components that attract each other. An operation observation port (21) is opened on the planting guide plate (12) near the planting port (19). The operation observation port (21) is close to the outside and is formed by extending upward from the bottom of the planting guide plate (12). A clearance groove (26) is provided on both sides of the planting port (19). Anti-slip textures are fixed on the outside of the frame (20) near the clearance groove (26).

7. The biomedical dental implant precision positioning guide device according to claim 4, characterized in that, The bottom of the implant guide plate (12) is fixed with a support plate (14), and the support surface of the support plate (14) abuts against the inner wall of the patient's oral cavity.

8. The biomedical dental implant precision positioning guide device according to claim 4, characterized in that, The positioning tube (15) has a positioning channel inside, the cross-section of the positioning channel is circular, the axis of the positioning tube (15) is horizontal, and the positioning tube (15) and the base guide plate (11) are both on the side close to the outside of the oral cavity. A fixing nail is inserted in the positioning channel of the positioning tube (15) and the fixing nail is fixed on the alveolar bone of the patient.

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