A plasticity oral implant locator and a positioning method thereof

Abstract

The application is suitable for the technical field of oral implant equipment, and provides a plastic oral implant positioner and a positioning method thereof, which comprises a supporting ring, a butt joint block, a limiting ring, a supporting mechanism and a positioning mechanism; the butt joint block is fixed between the edges of the supporting ring and the limiting ring, the limiting ring is located below the supporting ring, and a gap is left between the supporting ring and the limiting ring. In the scheme, the overall positioner can be stably supported between the adjacent two teeth of a patient by the setting of the supporting mechanism, the drill used for implant tapping can be guided and positioned by the setting of the positioning mechanism, the dislocation during tapping is avoided, and meanwhile, the operation of fixing the support in the oral cavity of the patient in advance and then connecting the positioner with the support is effectively avoided by the integrated structure of the positioning mechanism and the supporting mechanism, so that the operation difficulty and operation time are greatly reduced, and the physical strength of the doctor and the patient is effectively maintained.

Description

Technical Field

[0001] This invention belongs to the field of dental implant equipment technology, and particularly relates to a malleable dental implant locator and its positioning method. Background Technology

[0002] Dental implant technology refers to a method of tooth restoration that uses a substructure implanted into the bone tissue to support and retain the superstructure. It consists of two parts: the substructure supporting the implant and the superstructure dental prosthesis. The implant is made of artificial materials (such as metal, ceramic, etc.) and is generally similar in shape to a tooth root. It is surgically implanted into the tissue (usually the upper and lower jaws) and obtains firm retention support from the bone tissue. The superstructure dental prosthesis is connected to it through special devices and methods. During the dental implant surgery, dental implant locators are often used to assist the dentist in the procedure.

[0003] Although there are various types of dental implant locators available today, some problems still exist. For example, current dental implant locators often require external supports for positioning. These external supports usually need to be fixed inside the patient's mouth before the locator is connected to them. Due to the limited operating space inside the mouth, this is not convenient for operation. Furthermore, if the positioning angle of the locator needs to be adjusted after connection, the support angle of the support also needs to be adjusted. This process is cumbersome, time-consuming, and labor-intensive. Prolonged operation can lead to severe physical exhaustion for both the surgeon and the patient, thereby increasing the intensity and risk of the surgery. Summary of the Invention

[0004] This invention provides a malleable dental implant locator and its positioning method, aiming to solve the problem that the current locator and support structure are separate structures, which are quite inconvenient to connect and difficult to adjust the positioning angle of the locator after fixing.

[0005] This invention is achieved as follows: Firstly, the malleable dental implant locator provided in this application adopts the following technical solution:

[0006] A malleable dental implant locator includes: a support ring, a connecting block, a limiting ring, a support mechanism, and a positioning mechanism;

[0007] The connecting block is fixed between the edges of the supporting ring and the limiting ring, the limiting ring is located below the supporting ring, and there is a gap between the supporting ring and the limiting ring;

[0008] The support mechanism for supporting the dental implant locator between two adjacent teeth is located at the bottom of the support ring, and the support mechanism includes an adjusting ring, a linkage rod, a slider, a docking block, and a transmission unit.

[0009] The adjusting ring is coaxial and rotatably connected to the bottom of the limiting ring. The linkage rod is slidably engaged in the gap between the supporting ring and the limiting ring, and a slot with a strip structure is provided on the limiting ring. The slider is fixed to the bottom of the linkage rod near the axis of the limiting ring, and the slider is slidably engaged in the slot of the limiting ring. The connecting block is fixed to the other end of the linkage rod and abuts against the patient's teeth.

[0010] The positioning mechanism for positioning the planting drill bit is located on the top of the support ring, and the positioning mechanism includes a convex ring, a limiting seat, a positioning ring, a docking support plate, and an adjustment unit.

[0011] The convex ring is coaxially fixed to the top of the supporting ring, the limiting seat is fixed at the top edge of the convex ring, the docking support plate is fixed at the bottom edge of the positioning ring, and the end of the docking support plate away from the positioning ring is rotatably connected to the limiting seat. The positioning ring is located above the convex ring.

[0012] Preferably, the transmission unit includes a driven rod and a driven groove. The driven rod is fixed to the bottom of the slider, and the arc-shaped driven groove is disposed through the adjusting ring. The driven rod is slidably engaged in the driven groove.

[0013] Preferably, the support mechanism further includes a support rod, a check pawl, and a locking block. The support rod has an i-shaped structure, with one end fixed to the edge of the adjusting ring and the other end located above the supporting ring. Several locking blocks are equidistantly arranged along the side wall of the convex ring. One end of the check pawl is rotatably connected to the end of the support rod located above the supporting ring, and the other end abuts between two adjacent locking blocks. The check pawl slides against the locking block.

[0014] Preferably, a leaf spring is fixed on one end of the support rod above the support ring, and the leaf spring partially slides against the side wall of the check pawl.

[0015] Preferably, the support mechanism further includes an abutment plate and a limiting block. The limiting block is fixed on the side wall of the abutment plate. The side of the docking block away from the linkage rod is provided with a groove, and the limiting block is slidably engaged in the groove. The overall structure formed by the abutment plate and the limiting block has at least two sets of these components on the docking block.

[0016] Preferably, the adjustment unit includes an angle adjustment plate, a nut, and a lead screw. Two angle adjustment plates are provided, and the two angle adjustment plates are respectively fixed on the side walls of the convex ring and the positioning ring. The two angle adjustment plates are symmetrically arranged vertically, and a nut is rotatably connected to the outer end of the angle adjustment plate. A lead screw is provided between the two nuts, and the lead screw is symmetrically provided with reverse threads.

[0017] Preferably, a knob is coaxially fixed at the center of the lead screw.

[0018] Preferably, the mating support plate is provided with an angle disk mating groove, and an angle disk is vertically fixed at the edge of the convex ring, the angle disk being slidably engaged in the angle disk mating groove.

[0019] Preferably, the positioning ring is provided with a planting drill bit positioning plate, which is available in various models and is detachably connected to the positioning ring by screws.

[0020] Secondly, this application also provides a positioning method, comprising the following steps:

[0021] S1. Support and fixation: Place the dental implant locator between two adjacent teeth of the patient. At this time, rotate the adjustment ring to make the driven rod slide under the limiting action of the driven groove, thereby driving the slider and the linkage rod to slide as a whole, so that the docking block abuts against the patient's teeth and forms a stable support.

[0022] S2. Planting angle adjustment: Rotate the screw to make the nut threaded together, and then drive the positioning ring docking support plate to rotate on the limit seat through the angle adjustment plate, and adjust the positioning ring to the appropriate angle in conjunction with the angle plate.

[0023] S3. Implant tapping: Connect the drill bit used for implant tapping to the implant drill bit positioning plate on the positioning ring to guide and position the drill bit, and at the same time, tap the patient's alveolar bone through the drill bit.

[0024] Compared with the prior art, the embodiments of this application have the following main advantages:

[0025] 1. The rotation of the adjusting ring in the support mechanism causes the driven rod to slide under the limiting action of the driven groove, thereby driving the slider and the linkage rod to slide as a whole, so that the docking block abuts against the patient's teeth. At the same time as the adjusting ring rotates, it abuts against the locking block through the anti-return pawl, thereby locking the adjusting ring to prevent it from reversing, so that the entire positioner can be stably supported between the patient's two adjacent teeth.

[0026] 2. The positioning mechanism guides and positions the drill bit used for tapping, preventing misalignment during tapping. Simultaneously, the rotation of the lead screw causes the nut to be threaded, which in turn causes the angle adjustment plate to drive the positioning ring's mating support plate to rotate on the limit seat, allowing the positioning ring to be quickly adjusted to the appropriate angle. This is simple and efficient.

[0027] 3. By utilizing the integrated structure of the positioning and support mechanisms, the operation of fixing the bracket inside the patient's mouth before use and then connecting the positioner to the bracket is effectively avoided, which greatly reduces the difficulty and time of the operation and effectively conserves the physical strength of both doctors and patients. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the positioning state structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the overall external structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the support mechanism structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the adjusting ring connection structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the linkage rod and its connection structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the connection structure of the planting drill bit positioning plate of the present invention;

[0034] In the diagram: 1. Support ring; 2. Connecting block; 3. Limiting ring; 4. Support mechanism; 41. Adjusting ring; 42. Linkage rod; 43. Slider; 44. Connecting block; 45. Driven rod; 46. Driven groove; 47. Support rod; 48. Check pawl; 49. Locking block; 410. Leaf spring; 411. Abutment plate; 412. Limiting block; 5. Positioning mechanism; 51. Protruding ring; 52. Limiting seat; 53. Positioning ring; 54. Connecting support plate; 55. Angle adjusting plate; 56. Nut; 57. Lead screw; 58. Knob; 59. Angle plate connecting groove; 510. Angle plate; 511. Planting drill bit positioning plate. Detailed Implementation

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] In a first aspect, embodiments of the present invention provide a malleable dental implant locator, such as... Figure 1-6 As shown, it includes: a support ring 1, a connecting block 2, a limiting ring 3, a support mechanism 4, and a positioning mechanism 5;

[0038] The connecting block 2 is fixed between the edges of the supporting ring 1 and the limiting ring 3. The limiting ring 3 is located below the supporting ring 1, and there is a gap between the supporting ring 1 and the limiting ring 3.

[0039] The support mechanism 4, which is used to support the dental implant locator between two adjacent teeth, is located at the bottom of the support ring 1, and the support mechanism 4 includes an adjusting ring 41, a linkage rod 42, a slider 43, a docking block 44, and a transmission unit.

[0040] The adjusting ring 41 is coaxially and rotatably connected to the bottom of the limiting ring 3. The linkage rod 42 is slidably engaged in the gap between the supporting ring 1 and the limiting ring 3, and a slot with a strip structure is provided on the limiting ring 3. The slider 43 is fixed to the bottom of the linkage rod 42 near the axis of the limiting ring 3, and the slider 43 is slidably engaged in the slot of the limiting ring 3. The connecting block 44 is fixed to the other end of the linkage rod 42 and abuts against the patient's teeth.

[0041] The transmission unit includes a driven rod 45 and a driven groove 46. The driven rod 45 is fixed to the bottom of the slider 43, and the arc-shaped driven groove 46 is provided through the adjusting ring 41. The driven rod 45 is slidably engaged in the driven groove 46.

[0042] The support mechanism 4 also includes a support rod 47, a check pawl 48, and a locking block 49. The support rod 47 has a U-shaped structure, with one end fixed to the edge of the adjusting ring 41 and the other end located above the supporting ring 1. Several locking blocks 49 are evenly spaced along the side wall of the convex ring 51. One end of the check pawl 48 is rotatably connected to the end of the support rod 47 located above the supporting ring 1, and the other end abuts against two adjacent locking blocks 49, with the check pawl 48 sliding against the locking block 49.

[0043] The positioning mechanism 5 for positioning the planting drill bit is located on the top of the support ring 1, and the positioning mechanism 5 includes a convex ring 51, a limiting seat 52, a positioning ring 53, a docking support plate 54, and an adjustment unit.

[0044] The convex ring 51 is coaxially fixed to the top of the support ring 1, the limiting seat 52 is fixed to the top edge of the convex ring 51, the mating support plate 54 is fixed to the bottom edge of the positioning ring 53, and the end of the mating support plate 54 away from the positioning ring 53 is rotatably connected to the limiting seat 52. The positioning ring 53 is located above the convex ring 51.

[0045] The adjustment unit includes an angle adjustment plate 55, a nut 56, and a lead screw 57. There are two angle adjustment plates 55, which are fixed on the side walls of the convex ring 51 and the positioning ring 53, respectively. The two angle adjustment plates 55 are arranged symmetrically above and below. A nut 56 is rotatably connected to the outer end of the angle adjustment plate 55. A lead screw 57 is arranged between the two nuts 56, and the lead screw 57 is symmetrically provided with reverse threads.

[0046] It should be noted that existing dental implant locators often require external support for positioning. This external support typically needs to be pre-fixed inside the patient's mouth before the locator is connected to it. Due to the limited operating space inside the mouth, this is inconvenient. Furthermore, adjusting the locator's positioning angle after connection requires adjusting the support angle of the support as well, making the process cumbersome, time-consuming, and labor-intensive. Prolonged operation can lead to severe physical exhaustion for both the surgeon and the patient, increasing the intensity and risk of the surgery. To address this issue, this solution incorporates a support mechanism 4 and a positioning mechanism 5. The rotation of the adjusting ring 41 in the support mechanism 4 causes the driven rod 45 to slide under the limiting action of the driven groove 46, thereby driving the slider 43 and the linkage rod 42 to slide together, allowing the connecting block 44 to contact the patient's teeth. Simultaneously, the adjusting ring 41 rotates, and the anti-return claw 48 engages with the locking block 49, locking the adjusting ring 41 to prevent reverse rotation. This ensures the locator is stably supported between two adjacent teeth of the patient.

[0047] The positioning mechanism 5 guides and positions the drill bit used for tapping, preventing misalignment during tapping. Simultaneously, the rotation of the lead screw 57 causes the nut 56 to be threaded, which in turn causes the angle adjustment plate 55 to drive the docking support plate 54 of the positioning ring 53 to rotate on the limit seat 52, allowing the positioning ring 53 to be quickly adjusted to the appropriate angle, which is simple and efficient.

[0048] Furthermore, the integrated structure of the positioning mechanism 5 and the support mechanism 4 effectively avoids the need to fix the bracket inside the patient's mouth in advance and then connect the positioner to the bracket during use, which greatly reduces the difficulty and time of operation and effectively conserves the physical strength of both doctors and patients.

[0049] Specifically, in this embodiment, the solution mainly includes a support ring 1, a connecting block 2, a limiting ring 3, a support mechanism 4, and a positioning mechanism 5. In use, the positioning device is first placed between two adjacent teeth of the patient. At this time, the adjusting ring 41 is rotated, causing the driven rod 45 to slide under the limiting action of the driven groove 46, thereby driving the slider 43 and the linkage rod 42 to slide as a whole. The linkage rod 42 drives the docking block 44 to move, thereby causing the docking block 44 to abut against the patient's teeth. At the same time as the adjusting ring 41 rotates, the anti-return pawl 48 abuts against the locking block 49, thereby locking the adjusting ring 41 to prevent it from reversing. Then, the screw 57 is rotated so that the nut 56 can be threadedly linked, thereby causing the angle adjusting plate 55 to drive the docking support plate 54 of the positioning ring 53 to rotate on the limiting seat 52. After adjusting the positioning ring 53 to an appropriate angle, the positioning ring 53 can guide and position the drill bit used for implant tapping.

[0050] In a further preferred embodiment of the present invention, such as Figure 1-6 As shown, a leaf spring 410 is fixed on the side wall of the support rod 47 above the support ring 1, and the leaf spring 410 partially slides against the side wall of the check pawl 48.

[0051] In this embodiment, the spring force of the leaf spring 410 pushes the anti-return pawl 48, thereby ensuring that the anti-return pawl 48 is always abutting between two adjacent locking blocks 49.

[0052] In a further preferred embodiment of the present invention, such as Figure 1-6 As shown, the support mechanism 4 also includes an abutment plate 411 and a limiting block 412. The limiting block 412 is fixed on the side wall of the abutment plate 411. The mating block 44 has a slot on the side away from the linkage rod 42, and the limiting block 412 is slidably engaged in the slot. The overall structure formed by the abutment plate 411 and the limiting block 412 has at least two sets of these on the mating block 44.

[0053] In this embodiment, the rotation of the limiting block 412 within the groove on the docking block 44 allows the abutment plate 411 to rotate in accordance with the surface structure of the patient's teeth, thereby enabling the locator to be more stably supported between the patient's two adjacent teeth.

[0054] In a further preferred embodiment of the present invention, such as Figure 1-6 As shown, a knob 58 is coaxially fixed at the center of the lead screw 57.

[0055] In this embodiment, the knob 58 facilitates the doctor's rotation of the lead screw 57.

[0056] In a further preferred embodiment of the present invention, such as Figure 1-6As shown, an angle disk docking groove 59 is provided through the docking support plate 54, and an angle disk 510 is vertically fixed at the edge of the protruding ring 51. The angle disk 510 is slidably engaged in the angle disk docking groove 59.

[0057] In this embodiment, the angle plate 510 is designed so that the angle of the docking support plate 54 can be directly observed when the docking support plate 54 rotates, so that the doctor can quickly adjust the angle of the positioning ring 53.

[0058] In a further preferred embodiment of the present invention, such as Figure 1-6 As shown, the positioning ring 53 is provided with a planting drill bit positioning plate 511. The planting drill bit positioning plate 511 is available in various models and is detachably connected to the positioning ring 53 by screws.

[0059] In this embodiment, by setting up various models of implantation drill bit positioning discs 511 and a detachable connection structure, doctors can replace different models of implantation drill bit positioning discs 511 for use according to the actual situation.

[0060] Secondly, referring to Figures 1-6 This application also provides a positioning method, comprising the following steps:

[0061] S1. Support and fixation: Place the oral implant locator between two adjacent teeth of the patient. At this time, rotate the adjusting ring 41 so that the driven rod 45 slides under the limiting action of the driven groove 46, thereby driving the slider 43 and the linkage rod 42 to slide as a whole, so that the docking block 44 abuts against the patient's teeth and forms a stable support.

[0062] S2. Planting angle adjustment: Rotate the screw 57 to make the nut 56 threadedly linked, and then drive the docking support plate 54 of the positioning ring 53 to rotate on the limit seat 52 through the angle adjustment plate 55, and adjust the positioning ring 53 to the appropriate angle in conjunction with the angle plate 510.

[0063] S3. Implant tapping: Connect the drill bit used for implant tapping to the implant drill bit positioning plate 511 on the positioning ring 53 to guide and position the drill bit, and simultaneously perform implant tapping on the patient's alveolar bone through the drill bit.

[0064] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0065] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0066] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0067] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the utility model. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not depart from the concept of the present invention. These technical solutions are also within the scope of protection of the present invention.

Claims

1. A malleable dental implant locator, characterized in that, include: Support ring (1), connecting block (2), limiting ring (3), support mechanism (4) and positioning mechanism (5); The connecting block (2) is fixed between the edges of the supporting ring (1) and the limiting ring (3), the limiting ring (3) is located below the supporting ring (1), and there is a gap between the supporting ring (1) and the limiting ring (3); The support mechanism (4) used to support the dental implant locator between two adjacent teeth is located at the bottom of the support ring (1), and the support mechanism (4) includes an adjustment ring (41), a linkage rod (42), a slider (43), a docking block (44), and a transmission unit; The adjusting ring (41) is coaxial and rotatably connected to the bottom of the limiting ring (3). The linkage rod (42) is slidably engaged in the gap between the supporting ring (1) and the limiting ring (3), and a slot with a strip structure is provided on the limiting ring (3). The slider (43) is fixed at the bottom of the linkage rod (42) near the axis of the limiting ring (3), and the slider (43) is slidably engaged in the slot of the limiting ring (3). The connecting block (44) is fixed at the other end of the linkage rod (42) and abuts against the patient's teeth. The positioning mechanism (5) for positioning the planting drill bit is located on the top of the support ring (1), and the positioning mechanism (5) includes a convex ring (51), a limiting seat (52), a positioning ring (53), a docking support plate (54), and an adjustment unit. The convex ring (51) is coaxially fixed to the top of the supporting ring (1), the limiting seat (52) is fixed at the top edge of the convex ring (51), the docking support plate (54) is fixed at the bottom edge of the positioning ring (53), and the end of the docking support plate (54) away from the positioning ring (53) is rotatably connected to the limiting seat (52), and the positioning ring (53) is located above the convex ring (51).

2. The malleable dental implant locator as described in claim 1, characterized in that, The transmission unit includes a driven rod (45) and a driven groove (46). The driven rod (45) is fixed to the bottom of the slider (43). The arc-shaped driven groove (46) is disposed through the adjusting ring (41), and the driven rod (45) is slidably engaged in the driven groove (46).

3. The malleable dental implant locator as described in claim 1, characterized in that, The support mechanism (4) further includes a support rod (47), a check pawl (48), and a locking block (49). The support rod (47) has a U-shaped structure, and one end of the support rod (47) is fixed at the edge of the adjusting ring (41), while the other end is located above the supporting ring (1). Several locking blocks (49) are equidistantly arranged along the side wall of the convex ring (51). One end of the check pawl (48) is rotatably connected to the end of the support rod (47) located above the supporting ring (1), while the other end abuts between two adjacent locking blocks (49), and the check pawl (48) slides against the locking block (49).

4. A malleable dental implant locator as described in claim 3, characterized in that, A leaf spring (410) is fixed on one end of the support rod (47) above the support ring (1), and the leaf spring (410) partially slides against the side wall of the check pawl (48).

5. A malleable dental implant locator as described in claim 1, characterized in that, The support mechanism (4) further includes an abutment plate (411) and a limiting block (412). The limiting block (412) is fixed on the side wall of the abutment plate (411). The docking block (44) has a slot on the side away from the linkage rod (42), and the limiting block (412) is slidably engaged in the slot. The overall structure formed by the abutment plate (411) and the limiting block (412) has at least two sets on the docking block (44).

6. A malleable dental implant locator as described in claim 1, characterized in that, The adjustment unit includes an angle adjustment plate (55), a nut (56), and a lead screw (57). There are two angle adjustment plates (55), which are respectively fixed on the side walls of the convex ring (51) and the positioning ring (53). The two angle adjustment plates (55) are arranged symmetrically up and down. A nut (56) is rotatably connected to the outer end of the angle adjustment plate (55), and a lead screw (57) is arranged between the two nuts (56). The lead screw (57) is symmetrically provided with reverse threads.

7. A malleable dental implant locator as described in claim 6, characterized in that, A knob (58) is coaxially fixed at the center of the lead screw (57).

8. A malleable dental implant locator as described in claim 1, characterized in that, An angle disk docking groove (59) is provided through the docking support plate (54), and an angle disk (510) is vertically fixed at the edge of the convex ring (51). The angle disk (510) is slidably engaged in the angle disk docking groove (59).

9. A malleable dental implant locator as described in claim 1, characterized in that, The positioning ring (53) is provided with a planting drill bit positioning plate (511). The planting drill bit positioning plate (511) is available in various models and is detachably connected to the positioning ring (53) by screws.

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