Implant tooth accurate positioning guide plate device for biomedicine

Abstract

The invention relates to the technical field of dental implants, in particular to a dental implant accurate positioning guide plate device for biomedicine, which comprises a base guide plate and an implant guide plate positioned above the base guide plate, the base guide plate is of an arc-shaped structure and is mounted on one side of a patient with missing teeth, a plurality of positioning cylinders are integrally formed on the base guide plate, and the base guide plate is fixedly connected with the implant guide plate through a connecting plate; a plurality of planting openings are formed in the planting guide plate, adjusting openings are formed close to the outer side of the oral cavity and communicated with the planting openings, and positioning assemblies are detachably installed in the planting openings. A tooth-shaped groove body is detachably mounted on the implanting guide plate and is matched with one side of the oral cavity of a patient without tooth loss to realize primary positioning, the tooth-shaped groove body is detached after positioning is completed, and a guide sleeve is mounted in a through hole; according to the positioning assembly, a double-guide-rod system is formed through a sliding block by means of four guide rods, so that X-direction and Y-direction precision fine adjustment control is achieved; the guide sleeve is in threaded connection with the sliding block, positioning guiding is provided for the drill rod, the through hole is protected against damage, and the drill rod is prevented from excessively drilling into the alveolar bone to damage the alveolar bone by limiting the machine head through the top.

Description

Technical Field

[0001] The present invention relates to the technical field of dental implants, and in particular to a precise positioning guide plate device for biomedical dental implants. Background Art

[0002] At present, dental implant technology is a modern oral restoration technology that uses surgical methods to restore the function of missing teeth. This technical system consists of three core components: implants, connecting bases, and restorative crowns. This restoration method can achieve long-lasting and stable treatment effects, and can achieve an ideal state close to natural teeth in terms of aesthetic appearance and chewing function. The basic process of implant surgery is to first implant the artificial tooth root into the alveolar bone tissue, then install the connecting base structure, and finally complete the fixed assembly of the artificial crown. The significant advantage of dental implant technology is that there is no need to grind adjacent healthy teeth, which can effectively avoid or reduce the use of removable denture plates, and get rid of the constraints of traditional clasp retention methods, thereby obtaining a more natural, beautiful and comfortable restoration effect. During the entire implant surgery, the implant guide device plays a vital and precise guiding role.

[0003] A Chinese patent document (publication number: CN117860413B) discloses a guide assembly for full-mouth dental implant surgery and its operation method, which relates to the field of dental implant technology. The guide assembly includes a base guide, on which a positioning guide, an implant guide, and a dental implant guide are installed. When in use, the base guide is first installed on the patient's gums, and then the positioning guide is installed on the base guide. The base guide is positioned using the positioning guide. After the base guide is positioned, the base guide is fixed to the patient's alveolar bone using a fixing pin. The application aims to prevent the base guide from being offset during installation, improve the accuracy of the position of the subsequent threaded groove on the alveolar bone, and enable the patient to have a normal bite when in use.

[0004] In existing dental implant technology, after the base guide is fixed with a fixing pin, the position of the guide hole where the drill rod is located and the target point of the alveolar bone may deviate, affecting the implant accuracy.

[0005] When drilling holes in the alveolar bone, multiple drill bits of different diameters are needed to enlarge the holes in order from small to large. The drill bits need to be inserted multiple times, and the handpiece assembly is manually operated, making it difficult to ensure the same depth of the hole 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 set between the guide hole of the planting guide 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] In response to the deficiencies in the prior art, the present invention provides a precise positioning guide plate device for biomedical dental implants. In the present invention, the positioning component realizes X and Y bidirectional precise fine-tuning control through a double guide rod system consisting of a slider with the aid of a first guide rod, a first guide block, and a second guide rod; a guide sleeve is threaded on the slider, and the guide sleeve provides precise positioning guidance for the drill rod and effectively protects the through hole from damage caused by the drill rod penetration. The screw connection between the bottom external thread and the through hole internal thread can also be used to form a height-adjustable limit mechanism, which prevents the drill rod from over-drilling through the machine head through the top, thereby protecting the alveolar bone and the accuracy of the implant hole; what is more prominent is that the guide sleeve, the ring body, and the wing plate form a circumferentially force-bearing whole through the reset spring, the limit groove, and the limit guide rod, which produces an anti-rotation technical effect and solves the safety hazard of changing the limit height due to accidental rotation of the guide sleeve caused by the rotation torque of the drill rod.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A biomedical dental implant precision positioning guide device comprises a base guide and an implant guide located above the base guide, the base guide being an arc-shaped structure and being installed on one side of a missing tooth among the upper and lower teeth in the patient's oral cavity, a plurality of positioning cylinders being integrally formed on the base guide, the base guide and the implant guide being fixedly connected by a connecting plate, a plurality of implant openings being formed on the implant guide, an adjustment opening being provided on the side of the implant guide close to the outside of the oral cavity, the adjustment opening being connected to the implant opening, a positioning assembly being detachably installed in the implant opening, a through hole being provided on the slider of the positioning assembly; a tooth-shaped groove being detachably installed on the implant guide, the tooth-shaped groove cooperating with one side of the non-missing tooth among the upper and lower teeth in the patient's oral cavity to achieve preliminary positioning, the tooth-shaped groove being removed after the preliminary positioning is completed, and a guide sleeve being installed in the through hole.

[0010] Preferably, the upper plane of the positioning assembly is not higher than the upper plane of the planting guide, and when the toothed trough body is installed on the planting guide, the two do not interfere with each other; the planting guide and the toothed trough body are temporarily fixed together by hand screws, which pass through the mounting holes of the toothed trough body and are screwed to the through holes on the planting guide.

[0011] Preferably, the positioning assembly includes a frame and a slider, two first guide rods are fixed in parallel and at intervals inside the frame, and first guide blocks are slidably mounted on the two first guide rods respectively, the first guide block is an inverted U-shaped structure and has a cross bar on the top, two second guide rods are fixed in parallel and at intervals between the two first guide blocks, and a slider is slidably mounted on the second guide rod; a mounting plate is fixed on the inner wall of the frame, the mounting plate is located on one side of the slider and fixedly connected to the two first guide rods, a thrust plate is fixed between the two first guide blocks, the thrust plate is located at the bottom of the first guide block and close to one side of the mounting plate, a first displacement unit is arranged between the mounting plate and the thrust plate, and a second displacement unit is arranged between the cross bar and the slider, the first displacement unit and the second displacement unit are respectively transmission-connected to the power switching unit, and the power switching unit is transmission-connected to the drive unit.

[0012] Preferably, the first displacement unit includes a first threaded shaft and a first worm gear, the first threaded shaft is arranged between the mounting plate and the thrust plate, one end of the first threaded shaft is passed through the thrust plate and is installed in a threaded connection manner, the smooth surface of the other end of the first threaded shaft is installed on the mounting plate through a rotating bearing, and the first worm gear is fixed to the end of the first threaded shaft close to the mounting plate; the second displacement unit includes a second threaded shaft and a second worm gear, the second threaded shaft is arranged between the cross bar and the slider, one end of the second threaded shaft is passed through the slider and is installed in a threaded connection manner, and the second threaded shaft is fixed to the end of the second threaded shaft close to the mounting plate. The smooth surface of the other end of the shaft is mounted on the cross bar through a rotating bearing, and the end of the second threaded shaft close to the cross bar is connected to the vertical direction-changing gearbox, and the other end of the vertical direction-changing gearbox is connected to the second rotating shaft. A rotating shaft spline is fixed on the outer periphery of the end of the second rotating shaft away from the gearbox, and the rotating shaft spline is axially slidingly sleeved in the sleeve spline groove of the spline sleeve, and a worm gear shaft is fixed on the other end of the spline sleeve, and the worm gear shaft passes through the mounting plate and a second worm gear is fixed on the rear end, and the worm gear shaft and the mounting plate are connected through a rotating bearing; the first worm gear and the second worm gear are respectively connected to the power switching unit.

[0013] Preferably, the power switching unit is located on a 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 a first worm gear tooth, the first worm gear tooth meshes with the first worm wheel, the outer peripheral surface of the second hollow worm shaft has a second worm gear tooth, the second worm gear tooth meshes with the second worm wheel, the sliding shaft slides through the two hollow worm shafts; both hollow worm shafts have a widened accommodating cavity, the first hollow worm shaft accommodating cavity is set to adjacent first spline grooves and first idling grooves, the second hollow worm shaft accommodating cavity is set to adjacent second spline grooves and The second idle groove, the first idle groove and the second idle groove are both located at the opposite end of the two hollow worm shafts; the first spline and the second spline are fixed at intervals on the outer circumferential surface of the sliding shaft, the first spline is located in the first hollow worm shaft accommodating cavity, and the second spline is located in the second hollow worm shaft accommodating cavity, when one of the first spline and the second spline cooperates with the corresponding spline groove, the other spline is located in the idle groove; the two hollow worm shafts are both rotatably mounted on the mounting plate through the second limit seat, one end of the sliding shaft extends outward to 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 driving unit includes a hand lever and a connecting ear plate fixed at one end of the cross shaft, a connecting hole is provided on the ear plate, one end of the hand lever has a hand-holding portion, and a connecting rod is fixed to the other end of the hand lever, the connecting rod and the hand lever are at an inclination angle less than ninety degrees, an annular groove is provided 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, an external thread is provided on the outer periphery of the bottom of the guide sleeve, and the external thread cooperates with the internal thread of the through hole. A first flange is fixed on the outer peripheral surface of the middle part of the guide sleeve, and the top of the guide sleeve extends radially outward to form a second flange. A limiting guide rod is fixed axially between the first flange and the second flange, and a ring body is slidingly sleeved on the outer periphery of the guide sleeve between the first flange and the second flange. The limiting guide rod slides through the ring body, and a reset spring is sleeved on the limiting guide rod. The reset spring is located between the second flange and the ring body, and scale lines are provided on the outer peripheral surface of the guide sleeve; both sides of the ring body extend symmetrically in the direction of the external thread to form two wing plates; the top end face of the adjusting slider is symmetrically provided with several limiting grooves along the center of the through hole, and the limiting grooves are opened from high to low from the center to the outside, and the bottom of the wing plate is inserted into the limiting groove.

[0016] Preferably, the bottom of the planting port extends inward to form a base, and the base and the bottom of the frame are respectively provided with detachable magnetic parts that attract each other. An operation observation port is provided on the planting guide near the planting port, and the operation observation port is close to the outside and is formed by a depression extending upward from the bottom of the planting guide. Avoidance grooves are respectively provided on both sides of the planting port, and anti-slip grooves are respectively fixed on the outside of the frame near the avoidance grooves.

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

[0018] Preferably, the positioning cylinder is internally formed with a positioning channel, the cross section of the positioning channel is circular, the axis direction of the positioning cylinder is horizontally arranged, and the positioning cylinder and the base guide plate are both arranged on the side close to the outside of the oral cavity; the fixing nail is arranged in the positioning channel of the positioning cylinder, and the fixing nail is arranged on the alveolar bone of the patient.

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

[0020] 1. The positioning assembly in the present application adopts modular design, realizes the application mode of "plug and play" with the implant port on the planting guide plate, adopts the application strategy of "installing on demand and removing after use", and maximally reduces the volume of foreign matter in the oral cavity, obviously alleviates the instrument congestion problem in the narrow space of the oral cavity; the modular structure greatly simplifies the maintenance of the device, when the positioning assembly is worn or needs to be calibrated, the module can be removed for maintenance without affecting the use of the base guide plate and the planting guide plate, and the maintenance cost and downtime are significantly reduced.

[0021] In the present application, the planting guide plate and the base guide plate are integrally formed in a direction, and when the base guide plate is fixedly connected with the alveolar bone, the planting guide plate is in the corresponding position of the implant area; drilling is performed after adaptive adjustment and positioning of the adjustable positioning assembly; the need for multiple connections and removals with the base guide plate in the prior art is avoided, the operation steps are simplified, the probability of damaging the base guide plate and the alveolar bone fixing structure is reduced, and the discomfort of the patient is reduced.

[0022] 2. The guide sleeve of the present invention can not only solve the technical problem that the through hole cannot be compatible with drill rods of different diameters by setting different inner diameter specifications to adapt to the size requirements of multiple step-by-step thickening drill rods, but also provide precise positioning guidance for the drill rod and effectively protect the through hole from damage caused by the drill rod. It can also use the screw connection between the bottom external thread and the through hole internal thread to form a height-adjustable limit mechanism, and prevent the drill rod from over-drilling through the limit effect of the top on the machine head, thereby protecting the alveolar bone and the accuracy of the implant hole; more outstanding is that the guide sleeve, the ring body, and the wing plate form a circumferential force-bearing whole through the reset spring, the limit groove, and the limit guide rod, which produces an anti-rotation technical effect and solves the problem of the drill rod The rotational torque causes the guide sleeve to rotate unexpectedly and change the safety hazard of the limit height; at the same time, the wing plate can not only realize the limit fixing function but also act as a screw ear plate to provide torque amplification function, so that the threaded connection can be quickly converted into axial displacement, significantly improving operating efficiency. The multiple symmetrical settings of the limit groove not only solve the problem of wing plate fixation, but also unexpectedly realize the function of rapid diversion and removal of oral fluids and residues. The friction heat between the drill rod and the contact parts is taken away by the flow of liquid to avoid local excessive temperature. This integrated and multifunctional innovative design realizes a high degree of integration of multiple technical effects such as guidance, limitation, protection, heat dissipation, and anti-rotation in the field of precise positioning of dental implants.

[0023] 3. The positioning assembly in the present invention realizes X and Y bidirectional precise fine-tuning control by means of a double guide rod system consisting of a first guide rod, a first guide block and a second guide rod through a slider, and utilizes the first threaded shaft and the second threaded shaft to respectively drive the first guide block and the slider to generate a micro-displacement to complete the precise positioning of the drill rod in the horizontal plane. It can also realize independent adjustment in one direction while maintaining an idle state in the other direction through the selective cooperation of the sliding shaft of the power switching unit with the first spline, the second spline and the spline groove and spline groove in the hollow worm shaft. It can also realize flexible shaft transmission in a non-linear state through the cooperation of components such as the connecting rod, the connecting ear plate and the cross shaft when the positioning assembly is located in a narrow and complex space such as the posterior tooth socket, thereby solving the technical problem that the traditional linear transmission mechanism cannot be effectively operated in the posterior oral cavity due to space limitations and angle constraints. BRIEF DESCRIPTION OF THE DRAWINGS

[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 schematic three-dimensional 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 installation structure of the positioning component of the device of the present invention;

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

[0028] Figure 5 It is the frame inside the device of the application installation structure perspective view;

[0029] Figure 6 It is the second shaft and spline sleeve cooperation profile view of the device of the application;

[0030] Figure 7 It is the sliding shaft and hollow worm shaft switching structure perspective view of the device of the application;

[0031] Figure 8 It is the guide sleeve and mobile phone assembly cooperation view of the device of the application;

[0032] Figure 9 It is the hand lever and connecting ear plate split state view of the device of the application;

[0033] In the figure: base guide plate-11; implant guide plate-12; tooth-shaped groove body-13; support plate-14; positioning cylinder-15; adapter plate-16; hand screw-17; mounting hole-18; implant mouth-19; frame-20; operation observation port-21; adjustment opening-22; sliding block-23; guide sleeve-24; cross shaft-25; avoidance groove-26; limiting groove-27; through hole-28; external thread-29; ring body-30; wing plate-31; first guide block-32; first guide rod-33; bearing 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; cross bar-41; second threaded shaft-42; vertical direction-changing gear box-43; second shaft-44; spline 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; shaft spline-52; first spline groove-53; first idling groove-54; first spline-55; second idling groove-56; second spline groove-57; second spline-58; first flange-59; limiting guide rod-60; return spring-61; scale-62; machine head-63; drill rod-64; mobile phone assembly-65; connecting ear plate-66; hand lever-67; adapter rod-68; bottom support-69. DETAILED DESCRIPTION

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

[0035] The contents not described in detail in the specification belong to the prior art known to those skilled in the art. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0036] Figures 1-9 As shown in the figure, a biomedical dental implant precise positioning guide plate device comprises a base guide plate 11 and an implant guide plate 12 located above the base guide plate 11, the base guide plate 11 is an arc structure and is installed on one side of the missing teeth in the upper and lower teeth in the patient's oral cavity, a plurality of 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 through a connecting plate 16, a plurality of implant openings 19 are formed on the implant guide plate 12, an adjusting opening 22 is arranged on the side close to the outside of the oral cavity on the implant guide plate 12, the adjusting opening 22 is communicated with the implant opening 19, a positioning assembly is detachably installed in the implant opening 19, and a through hole 28 is formed in the sliding block 23 of the positioning assembly; a tooth-shaped groove body 13 is detachably installed on the implant guide plate 12, the tooth-shaped groove body 13 is matched with one side of the non-missing teeth in the upper and lower teeth in the patient's oral cavity to realize preliminary positioning, the tooth-shaped groove body 13 is removed after the preliminary positioning is completed, and a guide sleeve 24 is installed in the through hole 28.

[0037] The positioning assembly in the present application adopts a modular design, realizes an "plug and play" application mode with the implant opening 19 on the implant guide plate 12, adopts an "install on demand and remove after use" application strategy, maximally reduces the volume of foreign matter in the oral cavity, and obviously relieves the instrument congestion problem in the narrow oral cavity space; the modular structure greatly simplifies the maintenance of the device, when the positioning assembly is worn or needs to be calibrated, the module can be individually removed for maintenance without affecting the use of the base guide plate 11 and the implant guide plate 12, and the maintenance cost and downtime are significantly reduced.

[0038] In the present invention, the positioning assembly realizes X and Y bidirectional precise fine-tuning control through the slider 23 with the help of a double guide rod system consisting of the first guide rod 33, the first guide block 32, and the second guide rod 40. The first threaded shaft 35 and the second threaded shaft 42 are respectively used to drive the first guide block 32 and the slider 23 to produce a micro-displacement to complete the precise positioning of the drill rod in the horizontal plane. The sliding shaft 38 of the power switching unit can be selectively matched with the first spline 55, the second spline 58 and the spline groove 53 and the spline groove 57 in the hollow worm shaft to realize independent adjustment in one direction while maintaining an idle state in the other direction. When the positioning assembly is located in a narrow and complex space such as the posterior alveolar, flexible shaft transmission in a non-linear state can be realized through the cooperation of components such as the connecting rod 68, the connecting ear plate 66 and the cross shaft 25, thereby solving the technical problem that the traditional linear transmission mechanism cannot be effectively operated in the posterior area of ​​the oral cavity due to space limitations and angle constraints.

[0039] In the prior art, a detachable positioning guide and an implant guide are provided, which are sequentially connected to a fixed base guide for use and then removed, which increases the complexity of the operation and the probability of damaging the base guide and the alveolar bone fixing structure, increasing the discomfort of the patient.

[0040] In the present invention, the implantation guide plate and the base guide plate are arranged in an integrally formed direction, and while the base guide plate is fixedly connected to the grooved bone, the implantation guide plate is located at a corresponding position in the implantation area, and drilling is performed after adaptively adjusting the positioning through an adjustable positioning component.

[0041] Furthermore, the upper plane of the positioning assembly is not higher than the upper plane of the planting guide plate 12, and when the toothed slot body 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 slot body 13 are temporarily fixedly connected by a hand screw 17, which passes through the mounting hole 18 of the toothed slot body 13 and is then screwed into the through hole 28 on the planting guide plate 12;

[0042] The tooth-shaped slot body 13 is made of a gel-like material produced by fully mixing dental stone powder and water. The mounting hole 18 provided on the tooth-shaped slot body 13 is used for temporary fixation on the implant guide plate 12. The hand screw 17 passes through the mounting hole 18 of the tooth-shaped slot body 13 and is then screwed to the through hole 28 on the implant guide plate 12. The through hole for connection is set in the area without upper teeth.

[0043] During the operation, the tooth-shaped socket 13 is precisely fitted to the patient's healthy teeth. The doctor then guides the patient to close the upper and lower jaws. After the patient completes the bite operation, the patient slightly swings the upper and lower jaws to find the best comfortable position. When the patient successfully adjusts the base guide 11 to the appropriate position, the doctor ensures that the upper and lower jaws of the patient are tightly closed, and then the fixing pin is inserted through the positioning channel in the positioning cylinder 15 to connect with the alveolar bone.

[0044] During the assembly process of the base guide plate 11, the patient's upper and lower jaws are always kept in a closed state. Therefore, when the physician uses the fixing pins to anchor the base guide plate 11, the base guide plate 11 can be effectively prevented from position deviation, thereby ensuring positioning accuracy.

[0045] After the base guide 11 is successfully anchored to the patient's gum tissue through the fixing pins, the tooth-shaped groove body 13 is separated from the surface of the implant guide 12; then the connection of the hand screw 17 is released, the tooth-shaped groove body 13 is removed, and the guide sleeve 24 is screwed into the through hole 28 in the implant opening 19 that needs to be processed. After adjusting the position of the guide sleeve 24, the drilling process is finally performed.

[0046] Furthermore, the positioning assembly includes a frame 20 and a slider 23, two first guide rods 33 are fixedly arranged in parallel and at intervals inside the frame 20, and first guide blocks 32 are slidably sleeved on the two first guide rods 33, the first guide blocks 32 are of an inverted U-shaped structure and have a cross bar 41 on the top, two second guide rods 40 are fixedly arranged in parallel and at intervals between the two first guide blocks 32, and the slider 23 is slidably sleeved on the second guide rod 40; a mounting plate 39 is fixedly arranged 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 thrust plate 34 is fixedly arranged between the two first guide blocks 32, the thrust plate 34 is located at the bottom of the first guide block 32 and close to one side of the mounting plate 39, a first displacement unit is arranged between the mounting plate 39 and the thrust plate 34, a second displacement unit is arranged between the cross bar 41 and the slider 23, the first displacement unit and the second displacement unit are respectively transmission-connected to the power switching unit, and the power switching unit is transmission-connected to the drive unit;

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

[0048] Furthermore, the first displacement unit includes a first threaded shaft 35 and a first worm gear 36. The first threaded shaft 35 is arranged between the mounting plate 39 and the thrust plate 34. One end of the first threaded shaft 35 is passed through the thrust plate 34 and is installed in a threaded connection manner. 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 to the end of the first threaded shaft 35 close to 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 arranged between the cross bar 41 and the slider 23. One end of the second threaded shaft 42 is passed through the slider 23 and is installed in a threaded connection manner. The smooth surface of the other end of 42 is mounted on the crossbar 41 through a rotating bearing. The end of the second threaded shaft 42 close to the crossbar 41 is connected to the vertical direction-changing gearbox 43. The other end of the vertical direction-changing gearbox 43 is connected to the second rotating shaft 44. A rotating shaft spline 52 is fixed to 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. The other end of the spline sleeve 45 is fixed with a worm gear shaft 47. The worm gear shaft 47 passes through the rear end of the mounting plate 39 and is fixed with a second worm gear 48. The worm gear shaft 47 and the mounting plate 39 are connected through a rotating 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 rotating bearing is a thrust ball bearing, which is used to bear the tension or thrust of the shaft. Angular contact ball bearings can also be selected, which can bear both axial and radial forces.

[0050] Neither the first threaded shaft 35 nor the second threaded shaft 42 enters the projection plane of the through hole 28 to avoid interference with the drill rod 64. Since the positioning assembly of the present invention is used to fine-tune the position of the drill rod, the length that needs to be adjusted is limited. The distance between the inner wall of one side of the slider 23 can meet the travel length of the threaded shaft.

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

[0052] A second limiting seat 50 is sleeved on the hollow worm shaft. Since the worm shaft sleeve only needs to rotate, shaft 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, and the spline sleeve 45 will also rotate with the second worm gear 48. Therefore, the first limit seat 46 is sleeved on the outer periphery of the spline sleeve 45 and rotates and slides to ensure stable rotation and axial sliding.

[0054] The vertical direction-changing gearbox 43 has two bevel gears inside to change the rotation transmission angle of the shaft by 90 degrees. The vertical direction-changing gearbox 43 in the present invention is a miniature structure that can be commercially customized and belongs to the existing technology. The specific working principle and structure are not described in detail here;

[0055] The vertical direction-changing gearbox 43 is fixedly mounted on the crossbar 41 , and the third limit seat sleeved on the second rotating shaft 44 allows the rotating shaft to rotate while limiting the radial deviation 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, and 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 first worm gear teeth 37, and the first worm gear teeth 37 mesh with the first worm gear 36. The outer peripheral surface of the second hollow worm shaft has second worm gear teeth 49, and the second worm gear teeth 49 mesh with the second worm gear 48. The sliding shaft 38 is slidably passed through the two hollow worm shafts; both hollow worm shafts have a widened accommodating cavity, the first hollow worm shaft accommodating cavity is set to adjacent first spline grooves 53 and first idling grooves 54, and the second hollow worm shaft accommodating cavity is set to adjacent second spline grooves 57 and second The idle groove 56, the first idle groove 54 and the second idle groove 56 are both located at opposite ends of the two hollow worm shafts; a first spline 55 and a second spline 58 are fixedly provided on the outer circumferential surface of the sliding shaft 38 at intervals, the first spline 55 is located in the first hollow worm shaft accommodating cavity, and the second spline 58 is located in the second hollow worm shaft accommodating cavity. When one of the first spline 55 and the second spline 58 is engaged with the corresponding spline groove, the other spline is located in the idle groove; the two hollow worm shafts are rotatably mounted on the mounting plate 39 through the second limit seat 50, one end of the sliding shaft 38 extends outward into the adjustment opening 22 and the end is connected to the cross shaft 25, and the other end of the cross shaft 25 is connected to a detachable drive unit;

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

[0058] In the device of the present invention, the sliding shaft 38 is inserted into the interior of the hollow worm shaft so that the splines near the inside cooperate with the spline grooves to form an initial setting, which is convenient for subsequent adjustment by the drive unit. After the plane position is adjusted first, the sliding shaft 38 is pulled outward to further adjust the plane position in the other direction.

[0059] When the positioning component is located inside the oral cavity and is not conducive to direct operation, an inclined angle will be generated between the two transmission shafts. The cross shaft 25 can be transmitted between the two transmission shafts while maintaining a certain inclined angle.

[0060] The cross shaft has a three-dimensional cross-shaped structure, with four journals arranged in a "+" shape: two journals lie on the same straight line (horizontally), and the other two journals lie on a line perpendicular to it (vertically), forming two mutually perpendicular axes in space. Each pair of opposing journals connects to the bearing holes of a universal joint yoke. When the driving shaft rotates, the active universal joint yoke drives the cross shaft around its center point. Due to the geometric constraints of the cross shaft, the other pair of journals must also synchronously drive the driven universal joint yoke to rotate, thereby transmitting the rotational motion from the driving shaft to the driven shaft. In this process, the cross shaft takes advantage of the relative swingability of its two perpendicular axes. Even if there is angular misalignment between the two shafts, torque can still be reliably transmitted through the hinged connection between the cross shaft and the universal joint yoke. The cross shaft acts as both a force transmission medium and a motion conversion hub. Its own compound motion in space compensates for the angular difference between the two shafts, achieving power transmission under non-coaxial conditions.

[0061] At the joint between the spline groove and the spline, a transition involute is set on one side and a reduction line is set on the other side, which is conducive to quick and smooth cutting when the two are close.

[0062] Furthermore, the drive unit includes a hand lever 67 and a connecting ear plate 66 fixed to one end of the cross shaft 25. The ear plate 66 has a connecting hole. One end of the hand lever 67 has a grip portion. The other end of the hand lever 67 is fixed with a connecting rod 68. The connecting rod 68 is inclined at an angle less than 90 degrees to the hand lever 67. An annular groove is provided 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.

[0063] When in use, the handhold of the hand lever 67 is located outside the oral cavity, and the other end of the hand lever 67 is located inside the oral cavity. The connecting rod 68 of the hand lever 67 is inserted into the connecting hole of the ear plate 66, and the ear plate 66 can be pulled outward or pushed inward by the hand lever 67, driving the sliding shaft 38 to produce axial displacement inside the two hollow worm shafts, so that the spline is matched with the corresponding spline groove, thereby selecting to adjust the X position or Y position on the horizontal plane; further, the inner wall of the annular groove is made to fit with the ear plate, and the hand lever 67 is manually rotated to drive the ear plate 66, the cross shaft 25 and the sliding shaft 38 to rotate, and the worm gear structure cooperates with the threaded shaft transmission structure to produce displacement, further adjusting the X position or Y position of the horizontal plane of the slider 23, thereby realizing the adjustment of 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 to avoid separation. Since the adjustment opening 22 is a groove structure, the cross shaft 25 will not contact the inner wall of the oral cavity when it rotates therein.

[0065] Furthermore, an external thread 29 is provided on the outer periphery of the bottom of the guide sleeve 24, and the external thread 29 cooperates with the internal thread of the through hole 28. A first flange 59 is fixed on the outer peripheral surface of the middle part of the guide sleeve 24, and a second flange is extended radially outward on the top of the guide sleeve 24. A limiting guide rod 60 is fixed axially between the first flange 59 and the second flange. A ring 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 A ring body 30 is provided, and a return spring 61 is sleeved on a limit guide rod 60. The return spring 61 is located between the second flange and the ring body 30. The outer circumferential surface of the guide sleeve 24 is provided with scale lines 62. 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 surface of the adjustment slider 23 is symmetrically provided with a plurality of limit grooves 27 along the center of the through hole 28. The limit grooves 27 are extended from high to low from the center to the outside, and the bottom of the wing plate 31 is inserted into the limit groove 27.

[0066] It should be noted that a head 63 is provided at the end of the mobile phone assembly 65, a drill rod 64 is fixed at the bottom of the head 63, and the drill rod 64 is slidably inserted into the guide sleeve 24, and the bottom end of the drill rod 64 is close to the alveolar bone for drilling work;

[0067] Since the implant hole is opened on the alveolar bone, multiple drill rods with gradually increasing thickness are required to expand the hole. The through hole 28 cannot adapt to drill rods of different diameters, and the through hole 28 may be damaged by the drill rods.

[0068] A guide sleeve 24 is arranged between the through hole 28 and the drill rod 64. Multiple guide sleeves 24 with different inner diameters are provided to adapt to drill rod sizes 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, the implant hole must be expanded multiple times, and the handpiece assembly is manually operated, it is difficult to ensure the same drilling depth each time. A hole that is too shallow will make installation difficult, and a hole that is too deep will cause irreparable damage to the alveolar bone.

[0070] The bottom of the guide sleeve 24 is provided with an external thread that cooperates with the internal thread of the through hole 28 to form a height-adjustable limiter. The top of the guide sleeve 24 limits the position of the handpiece 63 to prevent excessive drilling of the drill rod and 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, and the rotating guide sleeve 24 and the threaded through hole 28 to move relative to each other, thereby changing the limit height of the guide sleeve 24 and the drilling depth, 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 body 30, causing the two wings 31 to extend into the limiting groove 27. The limiting groove 27 prevents the wings 31 from rotating. Because the limiting guide rod 60 limits the circumferential rotation of the ring body 30, the ring body 30, the wings 31, and the guide sleeve 24 form a force-bearing whole in the circumferential direction, preventing rotation caused by the drill rod and damage to the limiting dimensions. The scale line 62 cooperates with the ring body 30 to reflect the drilling depth set by the drill rod, which is intuitive and reliable.

[0073] The wing plate 31 is used for fixing and limiting, and also serves as a screwing lug plate, which reduces the number of structural settings and saves space and materials. When the guide sleeve 24 needs to be rotated, the ring body 30 or the wing plate 31 is lifted to disengage the wing plate 31 from the limiting groove 27. The wing plate 31 is rotated to drive the guide sleeve 24. The wing plate 31 amplifies the torque, quickly converting the threaded connection into displacement, thereby improving the efficiency of the operation.

[0074] Among them, the limiting groove 27 adopts multiple symmetrical settings and remains tilted outward, which is conducive to the rapid flow of liquid or residue inside the oral cavity from the positioning component and discharged from the body through the straw. The fast-flowing liquid will take away the heat generated between the drill rod and the contact parts, avoiding excessive local stability in the oral cavity and ensuring safety during the dental implant process.

[0075] The guide sleeve 24 of the present invention can not only solve the technical problem that the through hole 28 is not compatible with drill rods of different diameters by setting different inner diameter specifications to adapt to the size requirements of multiple step-by-step thickening drill rods 64, but also provide precise positioning guidance for the drill rod 64 and effectively protect the through hole 28 from damage caused by the drill rod. The bottom external thread and the internal thread of the through hole 28 can also be screwed together to form a height-adjustable limit mechanism, which prevents the drill rod 64 from over-drilling through the alveolar bone and the accuracy of the implant hole through the limiting effect of the top on the machine head 63; more prominently, the guide sleeve 24, the ring body 30, and the wing plate 31 form a circumferential force-bearing whole through the reset spring 61, the limiting groove 27, and the limiting guide rod 60, thereby producing an anti-rotation technical effect. The safety hazard of changing the limit height due to accidental rotation of the guide sleeve 24 caused by the rotational torque of the drill rod 64 is solved; at the same time, the wing plate 31 can not only realize the limit fixing function but also act as a screw ear plate to provide torque amplification function, so that the threaded connection is quickly converted into axial displacement, which significantly improves the operating efficiency. The multiple symmetrical settings of the limit groove 27 not only solve the problem of fixing the wing plate 31, but also unexpectedly realize the function of rapid diversion and removal of oral fluid and residue, and the friction heat between the drill rod 64 and the contact parts is taken away by the flow of liquid to avoid local excessive temperature. This integrated and multifunctional innovative design realizes a high degree of integration of multiple technical effects such as guidance, limiting, protection, heat dissipation, and anti-rotation in the field of precise positioning of dental implants.

[0076] Furthermore, the bottom of the planting opening 19 extends inward to form a base 69, and the base 69 and the bottom of the frame 20 are respectively provided with detachable magnetic parts that attract each other. An operation observation port 21 is provided on the planting guide plate 12 near the planting opening 19. The operation observation port 21 is close to the outside and is formed by an upward extension of the bottom of the planting guide plate 12. Avoidance grooves 26 are respectively provided on both sides of the planting opening 19, and anti-slip grooves are respectively fixed on the outside of the frame 20 near the avoidance grooves 26.

[0077] It should be noted that the implant guide 12 is made of a transparent resin material, which is conducive to observing the situation near the implant opening. The through opening 21 is provided to further enhance the observation range and avoid blind spots caused by coverage caused by oral fluid or impurities. A removal and fixing component is provided between the positioning component and the implant opening 19 to facilitate the insertion and removal of the positioning component. When the positioning component is needed for drilling positioning, the positioning component is placed in the implant opening 19. When it is not needed, it can be left in place or removed, thereby reducing the downward drainage problem caused by coverage of oral fluid or impurities, while reducing foreign matter inside the oral cavity and reducing the patient's discomfort.

[0078] After the drilling on the alveolar bone is completed, the implant is placed in the implant hole, and a sealing cap is installed on the implant. The gum wound is then sutured and the recovery period is 3-6 months until the alveolar bone and the implant fit together. After the alveolar bone and the implant fit together, the corresponding gum is cut open, the sealing cap is removed, and replaced with the base. The recovery period is about 2 weeks until the gum wound heals. After the gum wound heals, a mold of the stable base and gum is taken to make a crown, and finally the crown is installed.

[0079] Furthermore, a support plate 14 is fixedly provided at the bottom of the implant guide plate 12, and a 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 out of the patient's wound. When the liquid in the mouth affects the dentist's surgical operation, the dentist will use a suction tube to suck out the liquid;

[0081] During the operation, the doctor cuts the top of the gum below the operation observation port 21 to expose the alveolar bone inside the gum, thereby improving the convenience of the dentist's operation on the alveolar bone. When the position and space are limited, a vertical incision knife is used.

[0082] Furthermore, a positioning channel is formed inside the positioning cylinder 15, the cross-section of the positioning channel is circular, the axial direction of the positioning cylinder 15 is set horizontally, and the positioning cylinder 15 and the base guide plate 11 are both on the side close to the outside of the oral cavity, and a fixing pin is passed through the positioning channel of the positioning cylinder 15, and the fixing pin is set on the patient's alveolar bone.

[0083] It should be noted that the positioning cylinder 15 and the base guide plate 11 are both located on one side of the alveolar bone and close to the outside of the oral cavity. When in use, the fixing pin passes through the positioning channel of the positioning cylinder 15 and is then fixed on the patient's alveolar bone, positioning and fixing the base guide plate 11 and the implant guide plate 12. 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 drilled.

[0084] During the implantation of the fixing nails, due to the differences in the sizes of the fixing nails of various specifications, it is necessary to ensure that the inner diameter of the positioning channel always exceeds the outer diameter of the fixing nail during the design, so as to ensure that the fixing nail can pass through the positioning tube 15 smoothly. In the process of the fixing nail passing through the positioning tube 15, in order to avoid its position deviation, a spring clip is arranged in the positioning channel inside the positioning tube 15. These spring clips are arranged in a uniformly distributed state along the central axis of the positioning tube 15, and the inner diameter channel formed by the multiple spring clips gradually shrinks from 0.8 cm to 0.1 cm. According to the current technical standards, the minimum outer diameter specification of the fixing nail is 0.1 cm. Therefore, when the fixing nail of the minimum specification passes through the spring clip, the multiple spring clips will have a clamping effect on the fixing nail, thereby ensuring that the three fixing nails can be stably implanted in the patient's alveolar bone tissue in a horizontal state.

[0085] Steps for positioning dental implants using the device:

[0086] Phase 1: Device installation and preliminary positioning

[0087] Installation of the base guide: Install the curved base guide 11) on the side of the missing tooth in the patient's upper and lower teeth. Install the tooth-shaped channel 13) on the implant guide 12). Insert the hand screw 17) through the mounting hole 18) of the tooth-shaped channel 13) and then screw it into the through hole 28) of the implant guide 12) to achieve temporary fixation.

[0088] Initial positioning operation - the tooth-shaped socket 13) is precisely fitted to the patient's healthy teeth. The doctor guides the patient to close the upper and lower jaws. After the patient completes the bite operation, the upper and lower jaws are slightly swung to find the best comfortable position;

[0089] Anchoring - When the patient successfully adjusts the base guide 11) to the appropriate position, the physician inserts the anchor pin through the positioning channel in the positioning cylinder 15) to connect with the alveolar bone while ensuring that the patient's upper and lower jaws are tightly closed. The base guide 11) remains in a closed position throughout the assembly process to ensure accurate positioning.

[0090] Phase 2: Guide sleeve installation

[0091] Removing the toothed socket: After the base guide 11) is successfully anchored to the patient's gingival tissue by the fixing pins, the toothed socket 13) is separated from the surface of the implant guide 12) and removed by releasing the hand screws 17).

[0092] Install the positioning component - install the positioning component in the implant opening 19) that needs to be treated;

[0093] Guide Sleeve Installation - Install the guide sleeve 24) in the through hole 28) of the slider 23) by screwing. The external thread 29) on the bottom of the guide sleeve 24) mates with the internal thread of the through hole 28) and the return spring 61) exerts downward force on the ring body 30) to cause the wing plate 31) to extend into the inner limit groove 27) to prevent rotation;

[0094] Depth adjustment setting - The limit height is adjusted by the cooperation 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) cooperate 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 disengage the wing plate 31) from the limit groove 27), and then hold the wing plate 31 to rotate;

[0095] Phase 3: Precise Positioning, Adjustment, and Drilling

[0096] Fine-tuning positioning operation – insert the drill rod 64 of the mobile phone assembly 65 into the guide sleeve 24, determine the displacement point that needs to be adjusted, and then remove it; then insert the connecting rod 68) of the hand lever 67) into the connecting hole of the connecting ear plate 66), and use the hand lever 67) to pull outward or push the ear plate 66) inward to drive the sliding shaft 38) to produce axial displacement inside the two hollow worm shafts, so that the spline forms a match with the corresponding spline groove. Only one of them is selected to adjust the X position or Y position on the horizontal plane. Manually rotate the hand lever 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 match. The worm gear structure cooperates with the drive threaded shaft transmission structure to produce displacement to adjust the horizontal plane X position or Y position of the slider 23). By adjusting the position of the 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 - Slide the drill rod 64) on the mobile phone assembly head 63) through the guide sleeve 24) to drill a hole, use multiple drill rods of increasing thickness to expand the hole, and replace the guide sleeves 24) with different inner diameters to adapt to drill rods of different diameters;

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

[0099] Implant placement - After drilling is completed, the implant is placed in the implant hole, a sealing cap is installed on the implant, and the gum wound is sutured to recover for 3-6 months until the alveolar bone and the implant fit together;

[0100] Installation of the base - After the alveolar bone and the implant are fitted together, the corresponding gum is cut open, the sealing cap is removed and replaced with the base, and the gum wound is allowed to heal for about 2 weeks;

[0101] Crown production and installation - After the gum wound heals, a mold of the already stable base and gums is taken, and the crown is made and finally installed to complete the entire dental implant surgery.

[0102] The present application is illustrated by the above-mentioned embodiments, but the present application is not limited to the above-mentioned embodiments, i.e. it is not meant that the present application must rely on the above-mentioned embodiments to be implemented. It should be understood by those skilled in the art that the related improvements of the present application all fall within the protection scope and disclosure scope of the present application.

Claims

1. A biomedical dental implant precision positioning guide device, comprising a base guide (11) and an implant guide (12) located above the base guide (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. A plurality of 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). A plurality of implant openings (19) are formed on the implant guide plate (12). An adjustment opening (22) is provided on the side of the implant guide plate (12) close to the outside of the oral cavity. The adjustment opening (22) is connected to the implant opening (19). A positioning component is detachably installed in the implant opening (19). A through hole (28) is provided on the slider (23) of the positioning component. A tooth-shaped groove body (13) is detachably installed on the implant guide plate (12). The tooth-shaped groove body (13) cooperates with one 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 tooth-shaped groove body (13) is removed and a guide sleeve (24) is installed in the through hole (28).

2. The biomedical dental implant precise positioning guide device according to claim 1, characterized in that: The upper plane of the positioning assembly is not higher than the upper plane of the planting guide plate (12), and when the toothed slot body (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 slot body (13) are temporarily fixedly connected by a hand screw (17), and the hand screw (17) passes through the mounting hole (18) of the toothed slot body (13) and is screwed into the through hole (28) on the planting guide plate (12).

3. The biomedical dental implant precise positioning guide device according to claim 1, characterized in that: The positioning assembly comprises a frame (20) and a slider (23); two first guide rods (33) are fixedly arranged in parallel and at intervals inside the frame (20); first guide blocks (32) are respectively slidably sleeved on the two first guide rods (33); the first guide blocks (32) are of an inverted U-shaped structure and have a cross bar (41) on the top; two second guide rods (40) are fixedly arranged in parallel and at intervals between the two first guide blocks (32); the slider (23) is slidably sleeved on the second guide rods (40); a mounting plate (39) is fixedly arranged on the inner wall of the frame (20); the mounting plate (39) The first guide block (32) is located on one side of the slide block (23) and is fixedly connected to the two first guide rods (33). A thrust plate (34) is fixedly arranged between the two first guide blocks (32). The thrust plate (34) is located at the bottom of the first guide block (32) and close to one side of the mounting plate (39). A first displacement unit is arranged between the mounting plate (39) and the thrust plate (34). A second displacement unit is arranged between the cross bar (41) and the slide block (23). The first displacement unit and the second displacement unit are respectively connected to the power switching unit by transmission, and the power switching unit is connected to the driving unit by transmission.

4. The biomedical dental implant precise positioning guide device according to claim 3, characterized in that: The first displacement unit comprises a first threaded shaft (35) and a first worm gear (36), the first threaded shaft (35) is arranged between the mounting plate (39) and the thrust plate (34), one end of the first threaded shaft (35) is passed through the thrust plate (34) and is installed in a threaded connection manner, the smooth surface of the other end of the first threaded shaft (35) is installed on the mounting plate (39) through a rotating bearing, and the first worm gear (36) is fixed to the end of the first threaded shaft (35) close to the mounting plate (39); the second displacement unit comprises a second threaded shaft (42) and a second worm gear (48), the second threaded shaft (42) is arranged between the cross bar (41) and the slider (23), one end of the second threaded shaft (42) is passed through the slider (23) and is installed in a threaded connection manner, the second threaded shaft (42) is fixed to the end of the second threaded shaft (42) near the mounting plate (39). The smooth surface at the other end is mounted on the crossbar (41) through a rotating bearing. The end of the second threaded shaft (42) close to the crossbar (41) is connected to the vertical direction-changing gearbox (43). The other end of the vertical direction-changing gearbox (43) is connected to the second rotating shaft (44). A rotating shaft spline (52) is fixedly arranged on the outer periphery of one 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 fixedly arranged at the other end of the spline sleeve (45). The worm gear shaft (47) passes through the rear end of the mounting plate (39) and is fixedly arranged with a second worm gear (48). The worm gear shaft (47) and the mounting plate (39) are connected through 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 precise positioning guide device according to claim 4, characterized in that: The power switching unit is located on a side of the mounting plate (39) away from the slider (23), and 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 first worm gear teeth (37), and the first worm gear teeth (37) mesh with the first worm wheel (36). The outer peripheral surface of the second hollow worm shaft has second worm gear teeth (49), and the second worm gear teeth (49) mesh with the second worm wheel (48). The sliding shaft (38) is slidably arranged in the two hollow worm shafts; both hollow worm shafts have a widened accommodating cavity, the first hollow worm shaft accommodating cavity is set as adjacent first spline grooves (53) and first idle grooves (54), and the second hollow worm shaft accommodating cavity is set as adjacent second spline grooves (57) and second idle grooves (56 ), the first idle groove (54) and the second idle groove (56) are both located at opposite ends of the two hollow worm shafts; the first spline (55) and the second spline (58) are fixedly arranged on the outer peripheral surface of the sliding shaft (38), the first spline (55) is located in the first hollow worm shaft accommodating cavity, and the second spline (58) is located in the second hollow worm shaft accommodating cavity, when one of the first spline (55) and the second spline (58) is matched with the corresponding spline groove, the other spline is located in the idle groove; the two hollow worm shafts are rotatably mounted on the mounting plate (39) through the second limit seat (50), one end of the sliding shaft (38) extends outward to the adjustment opening (22) and the end is connected to the cross shaft (25), and the other end of the cross shaft (25) is connected to a detachable drive unit.

6. The biomedical dental implant precise positioning guide device according to claim 5, characterized in that: The driving unit comprises a hand lever (67) and a connecting ear plate (66) fixed on one end of the cross shaft (25), a connecting hole being provided on the ear plate (66), one end of the hand lever (67) having a hand-held portion, a connecting rod (68) being fixed on the other end of the hand lever (67), the connecting rod (68) and the hand lever (67) being inclined at an angle less than 90 degrees, an annular groove being provided in the middle of the connecting rod (68), and a diameter of the connecting rod (68) being smaller than the connecting hole of the connecting ear plate (66).

7. The biomedical dental implant precise positioning guide device according to claim 6, characterized in that: The outer periphery of the bottom of the guide sleeve (24) is provided with an external thread (29), which cooperates with the internal thread of the through hole (28). A first flange (59) is fixed on the outer peripheral surface of the middle part of the guide sleeve (24). The top of the guide sleeve (24) extends radially outward to form a second flange. A limiting guide rod (60) is fixed axially between the first flange (59) and the second flange. A ring body (30) is slidably sleeved 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 ring body (30). ), a reset spring (61) is sleeved on the limiting guide rod (60), and the reset spring (61) is located between the second flange and the ring body (30), and a scale line (62) is provided on the outer peripheral surface of the guide sleeve (24); both 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 surface of the adjusting slider (23) is symmetrically provided with a plurality of limiting grooves (27) along the center of the through hole (28), and the limiting grooves (27) are opened from high to low from the center to the outside, and the bottom of the wing plate (31) is inserted into the limiting groove (27).

8. The biomedical dental implant precise positioning guide device according to claim 6, characterized in that: The bottom of the planting opening (19) extends inward around to form a base (69), and the base (69) and the bottom of the frame (20) are respectively provided with mutually attractive detachable magnetic parts. An operation observation port (21) is provided on the planting guide plate (12) near the planting opening (19), and the operation observation port (21) is close to the outside and is formed by the bottom of the planting guide plate (12) extending upward and being recessed. Avoidance grooves (26) are respectively provided on both sides of the planting opening (19), and anti-slip grooves are respectively fixed on the outside of the frame (20) near the avoidance grooves (26).

9. The biomedical dental implant precise positioning guide device according to claim 6, characterized in that: A support plate (14) is fixedly provided at the bottom of the implantation guide plate (12), and a support surface of the support plate (14) abuts against the inner wall of the patient's oral cavity.

10. The biomedical dental implant precise positioning guide device according to claim 6, characterized in that: A positioning channel is formed inside the positioning cylinder (15), the cross section of the positioning channel is circular, the axial direction of the positioning cylinder (15) is arranged horizontally, and the positioning cylinder (15) and the base guide plate (11) are both on the side close to the outside of the oral cavity, and a fixing pin is inserted into the positioning channel of the positioning cylinder (15), and the fixing pin is fixed on the alveolar bone of the patient.

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