Dental drill guider for implantation
By designing guide holes and open slots in the dental implant drill guide and setting blocks on the slot walls to enhance the stability of the drill, the problems of inaccurate guidance and insufficient stability of the guide during dental implant surgery are solved, achieving high-precision dental implant surgery results.
Patent Information
- Application Number
- CN202520554860.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-03-20
- Estimated Expiration
- 2035-03-27
AI Technical Summary
In current dental implant surgery, the guide device has problems such as deviation between the guide hole position and the actual drilling position, insufficient stability, and inconvenience in operation, which affect the accuracy of dental implantation and increase surgical risks.
Design a dental drill guide for implantation, including a handle and a guide sleeve. The guide sleeve has a guide through hole and an open groove. The open groove has a stop on its wall. The stop reduces the size of the groove to enhance the enclosure and restriction of the dental drill by the guide sleeve, ensuring that the dental drill rotates stably in the sleeve.
It improved the accuracy of the surgery, reduced the surgical risk, shortened the operation time, and reduced the incidence of postoperative complications.
Smart Images
Figure CN224008497U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically relating to a dental drill guide for implantation. Background Technology
[0002] In current dental implant surgery, dental guides are commonly used to guide drilling and implant placement, ensuring that the implant enters the alveolar bone at the predetermined position and angle. Traditional guides often suffer from problems such as deviations between the guide hole position and the actual drilling position, insufficient stability, or inconvenience in installation and adjustment, thus affecting implant precision and increasing surgical risks. To address these issues, there is an urgent need for a dental drill guide for implants that is structurally sound, easy to operate, and provides precise guidance to meet the clinical demand for high-precision dental implant surgery.
[0003] Patent CN2865601Y discloses a dental implant surgery guide device, which is a cylindrical guide tube with an axial C-shaped opening, the curvature of which is between 90° and 180°. This invention provides a fixed-point and guiding device for dental implant surgery without affecting the surgeon's field of vision, the surgery itself, or cooling procedures. It has a simple structure, is easy to manufacture, convenient to use, and is safe and reliable.
[0004] In the above scheme, the guide tube is set as an open C-shaped column, which allows the dental drill to enter the catheter from the side of the guide tube. This avoids the problem that the dental drill bit is larger than the shaft and cannot be inserted into the sleeve. However, the opening allows the dental drill to enter laterally, which also means that the inner wall of the guide tube does not surround the outer wall of the dental drill. During operation, care should be taken to push the dental drill away from the opening. This can easily cause the insertion angle of the dental drill to change, or even cause it to slip directly from the opening side, resulting in a medical accident. Utility Model Content
[0005] The purpose of this invention is to address the aforementioned problems by providing a dental drill guide for implantation that can solve the technical issues described above.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A dental drill guide for implantation includes a handle and a guide sleeve. One end of the handle is provided with a connecting shaft that is bent off-axis. The guide sleeve is vertically disposed on the connecting shaft. The guide sleeve has an axially disposed guide through hole and an axially disposed open groove communicating with the guide through hole on its side wall. At least a portion of the groove wall is provided with a stop block that narrows the groove opening.
[0008] In the dental drill guide for implantation, the stop includes a continuous arc surface and a plane, the arc surface being connected to the inner wall of the guide hole, and the plane being parallel to the side wall of the open groove.
[0009] In the dental drill guide for implanting, the arc surface and the inner wall of the guide through hole have the same center and arc.
[0010] In the dental drill guide for implanting, the plane is arranged on one groove wall of the open groove, and the distance between the plane and the opposite groove wall of the open groove is less than the size of the opening of the open groove.
[0011] In the dental drill guide for implanting, the plane is arranged on two opposite groove walls of the open groove, and the distance between the two planes is less than the size of the opening of the open groove.
[0012] In the dental drill guide for implanting, the plane is arranged on one groove wall of the open groove, and the distance between the plane and the opposite groove wall of the open groove is less than the size of the opening of the open groove.
[0013] In the dental drill guide for implanting, the outer wall of one end of the guide sleeve is annularly provided with a positioning stepped structure.
[0014] In the dental drill guide for implanting, the stopper is arranged on one side of the groove wall of the open groove close to the positioning stepped structure, and the distance between the two groove walls of the open groove away from the positioning stepped structure is equal to the diameter of the guide through hole.
[0015] In the dental drill guide for implanting, the connecting shaft comprises a crankshaft part and a connecting part connected to each other, the crankshaft part is connected to one end of the handle, and the connecting part is parallel to the handle and connected to the outer wall of the guide sleeve.
[0016] In the dental drill guide for implanting, the connecting part is fixed at a position corresponding to the stopper on the outer wall of the guide sleeve.
[0017] The advantages of the present application are:
[0018] The open groove is axially arranged on the side wall of the guide sleeve, so that the dental drill can enter the guide sleeve from the side, thereby avoiding that the dental drill cannot be installed in the sleeve because the diameter of the drill bit is greater than the diameter of the shaft, and in order to make the guide sleeve have more reliable guiding effect, the stopper is additionally arranged on the side wall of the open groove to reduce the size of the opening, so as to increase the surrounding restriction of the inner wall of the guide sleeve on the dental drill, and the dental drill can stably rotate in the sleeve. BRIEF DESCRIPTION OF DRAWINGS
[0019] Fig. 1 It is a schematic diagram of the overall structure of the present application.
[0020] Fig. 2 It is a schematic diagram of the connecting shaft structure of the present application.
[0021] Fig. 3 It is a schematic diagram of the guide sleeve structure of the present application.
[0022] In the diagram, there are handle 1, guide sleeve 2, guide through hole 21, open groove 22, positioning step structure 23, connecting shaft 3, stop block 4, arc surface 41, plane 42, and inclined surface 43. Detailed Implementation
[0023] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings. However, the utility model is not limited to these embodiments.
[0024] Example 1
[0025] like Figs. 1-3 As shown, the dental drill guide for implantation includes a handle 1 and a guide sleeve 2. One end of the handle 1 is provided with a connecting shaft 3 that is bent off-axis. The guide sleeve 2 is vertically arranged on the connecting shaft 3. A guide through hole 21 is axially provided inside the guide sleeve 2, and an open groove 22 communicating with the guide through hole 21 is axially opened on the side wall. At least a portion of the groove wall of the open groove 22 is provided with a stop 4 that narrows the groove opening.
[0026] That is, an open slot is axially opened on the side wall of the guide sleeve, so that the drill bit can enter laterally from the side of the guide sleeve. This avoids the drill bit diameter being unable to be installed in the sleeve because it is larger than the shaft diameter. At the same time, in order to make the guide sleeve have a more reliable guiding effect, an additional stop is added to the side wall of the open slot to reduce the size of part of the slot opening. This increases the enclosure and restriction of the drill bit by the inner wall of the guide sleeve, so that the drill bit can rotate stably in the sleeve.
[0027] In this embodiment, the stop block 4 includes a continuous arc surface 41 and a plane 42. The arc surface 41 is connected to the inner wall of the guide hole 21, and the plane 42 is parallel to the side wall of the open groove 22.
[0028] The presence of the open slot 22 means that only half of the arc-shaped inner wall of the guide hole 21 is retained, while the arc surface 41, as an extension of the inner wall, makes part of the inner wall of the guide hole 21 greater than 180°, thereby ensuring that the inserted column will not fall out of the open slot 22.
[0029] The plane 42 forms a narrower transverse entry channel than the open slot 22, allowing the small-diameter spindle part of the dental drill to enter the guide hole 21 through the channel formed by the plane 42. As the larger diameter part continues to be inserted downwards, it can fit into the guide hole 21 and the arc surface 41.
[0030] The stepped structure with different diameters is arranged on the rotating shaft of the dental drill. A part of the rotating shaft has a diameter corresponding to the guiding through hole 21, and is the main part in sliding contact with the inner wall of the guiding sleeve 2 during the rotation of the dental drill. Another part of the rotating shaft has a smaller diameter corresponding to the gap of the blocking block 4. The small-diameter rotating shaft enters the guiding through hole 21 through the gap of the blocking block 4, and then axially slides to make the larger-diameter part adhere to the inner wall to form radial limitation.
[0031] Preferably, the arc surface 41 has the same center and arc with the inner wall of the guiding through hole 21.
[0032] The arc surface 41 is the part of the guiding through hole 21 missing due to the opening of the open slot 22. The inner wall of the guiding through hole 21 is greater than 180°, so as to surround the dental drill and limit the dental drill in the radial direction.
[0033] In the embodiment, the flat surface 42 is arranged on the two opposite slot walls of the open slot 22, and the distance between the two flat surfaces 42 is smaller than the size of the slot opening of the open slot 22.
[0034] The blocking block 4 is arranged on the two opposite side walls of the open slot 22, and the flat surfaces 42 on the two blocking blocks 4 form a smaller transverse entry channel. The center line of the channel passes through the axis of the guiding through hole 21, so that the dental drill can more conveniently enter the hole. Meanwhile, the two sides have the extension of the inner wall of the guiding through hole 21, so as to ensure the stability of the dental drill during movement.
[0035] Preferably, the flat surface 42 is connected with the inclined surface 43 on the opposite side of the arc surface 41, and the inclined surface extends to the outer wall of the guiding sleeve 2.
[0036] Since the flat surface 42 reduces the transverse entry channel, and the small-diameter part of the dental drill may be equivalent to the size of the reduced channel, the inclined surface 43 is arranged on the outer edge of the channel, so that the entrance of the channel forms a funnel shape, and the dental drill can be more easily aligned with the channel and enter the channel. This also reduces the difficulty of operation of the doctor during the operation.
[0037] In the embodiment, the positioning stepped structure 23 is annularly arranged on the outer wall of one end of the guiding sleeve 2.
[0038] The positioning stepped structure is annularly arranged on the outer wall of one end of the guiding sleeve, and has a stepped concave-convex surface, so as to facilitate the fixation of the guide to the surrounding anatomical structure during the operation, and prevent accidental displacement.
[0039] Preferably, the blocking block 4 is arranged on the side of the slot wall of the open slot 22 close to the positioning stepped structure 23, and the distance between the two slot walls of the open slot 22 away from the positioning stepped structure 23 is equal to the diameter of the guiding through hole 21.
[0040] The stopper 4 is arranged on the side close to the positioning step structure 23, i.e. the end fixed to the anatomical structure, so that the arc surface 41 is closer to the positioning end to more stably prevent the dental drill from being tilted and displaced.
[0041] In the embodiment, the connecting shaft 3 comprises a crankshaft part connected to one end of the handle 1 and a connecting part parallel to the handle 1 and connected to the outer wall of the guide sleeve 2.
[0042] The handle is ergonomically designed and the surface is treated to be non-slippery to ensure that the doctor holds it stably during the operation. One end of the handle is processed to form a connecting shaft deviated from the shaft center, which is made of high-strength stainless steel material to ensure sufficient rigidity under high load conditions. The bending of the connecting shaft can bypass the blockage of the tissue in the patient's oral cavity and can also concentrate the force on the eccentric bending part to make the fixation more firm.
[0043] Preferably, the connecting part is fixed at the position corresponding to the stopper 4 on the outer wall of the guide sleeve 2.
[0044] The stopper 4 is mainly used to limit the dental drill in the guide through hole under the maximum force, so the connecting part also needs to be connected at the position corresponding to the outer wall of the guide sleeve 2 to ensure the stability of the guide sleeve 2 after positioning.
[0045] During the actual guide plate implantation operation, the doctor will select a suitable type of guide according to the oral condition of the patient. After holding the guide through the handle, the connecting shaft deviated from the shaft center is installed at the pre-positioned guide position. By using the continuous channel formed by the guide through hole and the open slot in the guide sleeve, the doctor can accurately control the drilling direction and depth. The setting of the inclined surface helps to correct the deviation that may occur during drilling, thereby ensuring that the implant is implanted in the ideal position at the later stage. Clinical trials show that the use of the guide of the present application for dental implantation surgery can significantly improve the accuracy of the operation, shorten the operation time, and reduce the incidence of postoperative complications.
[0046] Embodiment 2
[0047] In the embodiment, the setting mode of the stopper 4 in embodiment 1 is changed, the flat surface 42 is arranged on one of the slot walls of the open slot 22, and the distance between the flat surface 42 and the opposite slot wall of the open slot 22 is less than the size of the slot opening of the open slot 22.
[0048] That is, only one side of the slot wall is provided with the stopper 4, a small opening channel is formed between the flat surface 42 of the stopper 4 and the opposite slot wall, and the dental drill is also limited by the arc surface of the stopper 4. At this time, the center line of the channel deviates from the shaft center of the guide through hole 21. Although it is more difficult for the dental drill to enter the guide through hole 21, the dental drill is also less likely to come out of the guide through hole 21 when it is moving.
[0049] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.
Claims
1. A dental drill guide for implantation, comprising a handle (1) and a guide sleeve (2), characterized in that, One end of the handle (1) is provided with a connecting shaft (3) that is bent off-axis. The guide sleeve (2) is vertically arranged on the connecting shaft (3). The guide sleeve (2) is axially provided with a guide through hole (21) and an open groove (22) that communicates with the guide through hole (21) is axially opened on the side wall. At least a portion of the groove wall of the open groove (22) is provided with a stop block (4) that narrows the groove opening.
2. The dental drill guide for implantation according to claim 1, characterized in that, The stop block (4) includes a continuous arc surface (41) and a plane (42). The arc surface (41) is connected to the inner wall of the guide hole (21), and the plane (42) is parallel to the side wall of the open groove (22).
3. The dental drill guide for implantation according to claim 2, characterized in that, The arc surface (41) and the inner wall of the guide hole (21) have the same center and arc.
4. The dental drill guide for implantation according to claim 2, characterized in that, The plane (42) is disposed on one of the walls of the open groove (22), and the distance between the plane (42) and the opposite wall of the open groove (22) is smaller than the size of the opening of the open groove (22).
5. The dental drill guide for implantation according to claim 2, characterized in that, The plane (42) is disposed on the two opposite walls of the open groove (22), and the distance between the two planes (42) is smaller than the size of the opening of the open groove (22).
6. The dental drill guide for implantation according to claim 2, characterized in that, The plane (42) is connected to the inclined surface (43) on the opposite side of the arc surface (41), and the inclined surface extends to the outer wall of the guide sleeve (2).
7. The dental drill guide for implantation according to claim 1, characterized in that, The guide sleeve (2) has a positioning step structure (23) circumferentially formed on the outer wall of one end.
8. The dental drill guide for implantation according to claim 7, characterized in that, The stop block (4) is located on the side of the open groove (22) near the positioning step structure (23), and the distance between the two groove walls on the side of the open groove (22) away from the positioning step structure (23) is equal to the diameter of the guide hole (21).
9. The dental drill guide for implantation according to claim 1, characterized in that, The connecting shaft (3) includes a crankshaft portion and a connecting portion connected together. The crankshaft portion is connected to one end of the handle (1), and the connecting portion is parallel to the handle (1) and connected to the outer wall of the guide sleeve (2).
10. The dental drill guide for implantation according to claim 9, characterized in that, The connecting part is fixed on the outer wall of the guide sleeve (2) at the position corresponding to the stop block (4).