A system for bone preparation around an implant

Abstract

This invention discloses a peri-implant bone trimming system, relating to the field of medical device technology. It includes a guide, and bone trimming mills and gingival trimming mills adapted to the guide. Both the bone trimming mill and the gingival trimming mill of this invention can be adapted and connected to the same guide, meaning two different mills can share the same guide to complete different stages of trimming operations. Therefore, in clinical practice, it is unnecessary to configure separate guides for bone trimming and gingival trimming, achieving the effects of reducing the number of tools, reducing the number of times parts need to be changed during surgery, and simplifying the operation process. Through a standardized guide structure, the trimming guidance path is standardized, transforming the manual operation that originally relied on the doctor's experience into a standardized process, reducing reliance on the operator's clinical experience, achieving consistency in operation between different doctors and different cases, and significantly improving the success rate of implant restoration.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a peri-implant bone repair system. Background Technology

[0002] In the clinical treatment of dental implant restoration, after the implant is placed, the surrounding bone needs to be precisely trimmed to remove bone resistance and optimize its shape, so as to provide conditions for the placement of the abutment and gingival shaping. After the abutment is installed, the surrounding gingival tissue also needs to be trimmed to ensure that the gingival shape matches the abutment.

[0003] Currently, the most widely used trimming instruments in clinical practice are ball drills. These instruments rely on the operator's clinical experience for manual trimming, which has significant technical drawbacks: First, the precision of morphological trimming is insufficient, and the angle and direction of trimming are difficult to quantify and control, easily leading to over-removal or under-trimming of tissue; Second, the operation risk is high, and in scenarios such as the posterior tooth area with limited field of vision, it is easy to damage the implant shoulder, adjacent teeth and other surrounding tissues; Third, the trimming effect is inconsistent, and the difference in the technical level of different operators leads to uneven tissue morphological adaptation.

[0004] Besides traditional ball drills, existing specialized trimming instruments, while improving ease of operation to some extent, still have significant limitations: on the one hand, bone trimming and gingival trimming usually require different guides, resulting in high tool costs and cumbersome clinical procedures; on the other hand, guides are mostly custom-designed, only compatible with their own brand's implant systems, lacking compatibility. Therefore, there is an urgent need for a peri-implant trimming instrument that can solve the problems of insufficient precision, high tool costs, and poor compatibility in existing technologies. Summary of the Invention

[0005] This invention provides a peri-implant bone trimming system that solves the technical problems of high cost and low precision of existing instruments and tools.

[0006] To address the aforementioned technical problems, this invention provides a peri-implant bone trimming system, comprising a guide, a bone trimming mill, and a gingival trimming mill; the bone trimming mill is adaptable to the guide; the gingival trimming mill is adaptable to the guide; wherein, the guide is provided with an installation connection portion and a limiting positioning portion; both the bone trimming mill and the gingival trimming mill have inner holes for adaptable connection with the installation connection portion; the limiting positioning portion is used to limit the movement of the bone trimming mill or the gingival trimming mill along the axial direction of the guide, thereby controlling the trimming depth.

[0007] Preferably, the mounting connection of the guide includes a connecting body and a transition groove formed at the end of the connecting body; the end of the bone trimming mill is provided with a first mounting groove, and the end of the gingival trimming mill is provided with a second mounting groove.

[0008] Both the first mounting slot and the second mounting slot are used to cooperate with the transition slot to achieve circumferential positioning.

[0009] Preferably, the positioning connection part of the guide includes a limiting platform, a shoulder, and an adapter; the limiting platform and the shoulder are integrally formed; the adapter is connected to the main body of the guide for connection with the implant or a smooth collar to achieve coaxial positioning.

[0010] Preferably, the lower surface of the limiting platform is provided with anti-slip teeth, which are used to press against the platform end face of the implant after the guide is connected to the implant to prevent circumferential rotation.

[0011] Preferably, the guide is further provided with a flow channel, which includes an axial flow channel and a transverse flow channel; the outer end opening of the transverse flow channel is used to face the trimming operation area; the axial flow channel is arranged to pass through the axial direction of the guide and is connected to the transverse flow channel.

[0012] Preferably, the bone trimming mill has a first through channel at its axis and the gingival trimming mill has a second through channel at its axis; when the bone trimming mill or the gingival trimming mill is adapted and connected to the guide, the first through channel or the second through channel is coaxially connected to the axial channel of the guide.

[0013] Preferably, the first end of the bone trimming mill is provided with a first connecting part for connecting with the implant mobile phone; the end surface of the bone trimming mill is provided with a bone cutting edge, and the outer peripheral contour of the bone cutting edge is adapted to the outer peripheral contour of the smooth neck ring.

[0014] Preferably, the first end of the gingival shaping bone mill is provided with a second connecting part for connecting with an implant handpiece; the end surface of the gingival shaping bone mill is provided with a cutting edge for the gingiva.

[0015] Preferably, the end surface of the bone trimming mill is further provided with a first stepped groove, which is connected to the first mounting groove for heat dissipation.

[0016] Preferably, the adapter and the main body of the guide are integrally formed, and the guide can be replaced to adapt to implants of different brands or models.

[0017] Compared with related technologies, the peri-implant bone trimming system provided by this invention has the following beneficial effects:

[0018] The guide of this invention is provided with a mounting connection part. Both the bone trimming mill and the gingival trimming mill have inner holes and can be fitted with the mounting connection part. Therefore, the bone mill always moves coaxially with the axis of the guide as a reference during rotational feeding, avoiding angular deviations that occur during manual operation. At the same time, because the guide is provided with a limiting positioning part, when the bone mill moves axially to the limiting positioning part, it will be physically blocked, so the trimming depth of bone or gingival tissue is precisely controlled within a preset range. This solves the problem of "difficulty in quantifying and controlling the trimming angle and direction, and easy over-removal of tissue", achieving the effect of improving trimming accuracy and avoiding damage to deep tissues. Through the standardized guide structure, the trimming guide path is standardized, transforming the manual operation that originally relied on the doctor's experience into a standardized process, reducing the dependence on the operator's clinical experience, achieving consistency in operation between different doctors and different cases, and significantly improving the success rate of implant restoration.

[0019] The bone mill for bone trimming and the bone mill for gingival trimming of this invention can both be adapted and connected to the same guide. That is, two different bone mills can share the same guide to complete different stages of trimming operations. Therefore, in clinical practice, it is not necessary to configure separate guides for bone trimming and gingival trimming. This solves the problem of "different guides are needed for bone trimming and gingival trimming, resulting in high tool costs and cumbersome clinical operations," and achieves the effects of reducing the number of tools, reducing the number of times parts need to be changed during the operation, and simplifying the operation process.

[0020] The positioning connection part of the guide of the present invention includes an adapter connector, which is integrally connected to the main body of the guide. For different brands or models of implants, only the guide needs to be replaced, while the bone trimming mill and gingival trimming mill do not need to be replaced. Therefore, the same trimming system is compatible with multiple implant platforms. This solves the problem that "guides often use proprietary designs, only compatible with their own brand, resulting in insufficient compatibility," and achieves the effect of improving system versatility and reducing inventory costs for medical institutions.

[0021] The guide of this invention is provided with a flow channel, which includes an axial flow channel and a transverse flow channel. The outer end opening of the transverse flow channel faces the trimming operation area, and the axial flow channel is connected to the transverse flow channel. Simultaneously, a first through flow channel and a second through flow channel are respectively provided at the axis of the bone trimming mill and the gingival trimming mill. When the bone mill is fitted and connected to the guide, these through flow channels are coaxially connected with the axial flow channel. Therefore, the debris generated during the trimming process can be quickly discharged from the operation area sequentially through the transverse flow channel, the axial flow channel, and the through flow channel under the action of gravity and coolant flushing. At the same time, coolant can be transported in reverse to the cutting edge position through the same channel. This solves the problem of "infection risk caused by debris accumulation" and tissue damage caused by grinding heat, achieving the effect of keeping the operation area clean and reducing the risk of thermal damage to bone and gingival tissue.

[0022] The lower surface of the limiting platform of this invention is provided with anti-slip teeth. When the guide is connected to the implant, the anti-slip teeth will press against the platform end face of the implant. Therefore, under the action of the circumferential torque generated by the rotation of the bone mill, the static friction between the anti-slip teeth and the platform end face can effectively resist the circumferential rotation of the guide. This ensures that the coaxial positioning relationship between the guide and the implant does not change due to vibration or torque throughout the entire trimming process, achieving the effect of maintaining positioning accuracy throughout the entire process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the bone trimming mill structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the bone trimming mill of the present invention;

[0025] Figure 3 This is a schematic diagram of the guide structure of the present invention;

[0026] Figure 4 This is a diagram showing the use of the bone trimming and grinding guide of the present invention;

[0027] Figure 5 This is a schematic diagram of the gingival trimming bone mill structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the gingival trimming bone mill guide structure of the present invention;

[0029] Figure 7 This is a diagram showing the use of the gingival bone mill guide of the present invention;

[0030] Figure 8 This is a schematic diagram of the first step groove of the bone trimming mill of the present invention.

[0031] The following labels are used in the diagram: 100, Bone trimming mill; 101, First connecting part; 102, Bone cutting edge; 103, First mounting groove; 104, First through-flow channel; 105, First stepped groove; 200, Guide; 201, Connecting body; 202, Transition groove; 203, Limiting platform; 204, Lateral flow channel; 205, Shoulder; 206, Adapter; 207, Axial flow channel; 300, Gingival trimming mill; 301, Second connecting part; 302, Gingival cutting edge; 303, Second mounting groove; 304, Second through-flow channel; 400, Implant; 401, Smooth neck collar. Detailed Implementation

[0032] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] like Figure 1-8As shown, this embodiment provides a peri-implant bone trimming system. The system includes a guide 200, and a bone trimming mill 100 and a gingival trimming mill 300 that can be adapted and connected to the guide 200. The bone trimming mill 100 and the gingival trimming mill 300 share the same guide 200 to perform trimming operations at two different stages: bone trimming and gingival trimming, respectively.

[0035] like Figure 3 As shown, the guide 200 is a coaxial cylindrical structure. The main body of the guide 200 integrates a mounting connection part, a positioning connection part, a limiting positioning part, and a flow guiding channel.

[0036] The mounting connector is located on the upper part of the guide 200 and is used to adapt and connect with the inner hole of the bone trimming mill 100 or the gingival trimming mill 300. Specifically, the mounting connector includes a cylindrical connecting body 201 and a transition groove 202. The outer periphery of the connecting body 201 is used to adapt and connect with the inner hole of the bone trimming mill 100 or the gingival trimming mill 300. The transition groove 202 is formed at the end of the connecting body 201.

[0037] In addition, such as Figure 3 As shown, an internal hexagonal structure is provided on the first end face of the connecting body 201. This structure is used to assist in the installation of the guide 200. The operator can insert an internal hexagonal wrench into it to tighten the guide 200 to ensure a firm connection between the guide 200 and the implant 400 or the smooth neck collar 401.

[0038] The positioning connection part is located at the lower part of the guide 200 and is used for positioning and connecting with the implant 400 or the smooth neck collar 401. For example... Figure 3 As shown, the positioning connection includes a limiting platform 203, a shoulder 205, and an adapter 206. The limiting platform 203, shoulder 205, and adapter 206 are integrally formed. The limiting platform 203 is used to adapt to the platform of the implant 400 or the smooth neck collar 401, thereby achieving coaxial positioning of the guide 200 and the implant 400 or the smooth neck collar 401. To ensure compatibility with implant systems of different brands and models, only the guide 200 of the corresponding specification needs to be replaced for quick adaptation.

[0039] Multiple anti-slip teeth (not shown in the figure) are provided on the lower surface of the limiting stage 203. When the guide 200 is connected to the implant 400 and tightened, these anti-slip teeth will press against the platform end face of the implant 400, thereby effectively preventing the guide 200 from rotating circumferentially during bone grinding or gingival trimming operations, ensuring positioning accuracy.

[0040] The limiting and positioning part is composed of the aforementioned limiting platform 203. For example... Figure 3As shown, when the body of the bone trimming mill 100 or the gingival trimming mill 300 moves along the axial direction of the guide 200 and contacts the limiting stage 203, the limiting stage 203 will physically block the mill from continuing to feed, thereby precisely controlling the trimming depth of bone or gingival tissue and avoiding over-removal.

[0041] A flow channel is provided throughout the main body of the guide 200 for discharging debris and introducing cooling medium. For example... Figure 3 As shown, the flow channel includes an axial flow channel 207 and three transverse flow channels 204. The three transverse flow channels 204 are located on the same horizontal plane and are arranged at equal intervals in the middle of the guide 200, with the outer opening of each transverse flow channel 204 facing the trimming operation area. The axial flow channel 207 runs through the entire body of the guide 200 along its axial direction and is connected to all three transverse flow channels 204. Debris generated during the trimming process can first enter the transverse flow channels 204, then flow into the axial flow channel 207 and be discharged outwards; at the same time, cooling water can also be introduced into the operation area through the axial flow channel 207 to reduce the temperature generated during the grinding operation and avoid thermal damage to bone or gingival tissue.

[0042] like Figure 1-2 As shown, the bone trimming mill 100 is used for bone trimming after implantation of the implant 400 and before installation of the smooth neck collar 401. Its first end has a first connecting part 101, which is a standard implant handpiece interface and can be directly adapted and installed with clinically standard implant handpieces. The distal surface of the bone trimming mill 100 has a bone cutting edge 102, the outer contour of which matches the outer contour of the smooth neck collar 401 to ensure that the trimmed bone morphology perfectly conforms to the smooth neck collar 401. A first mounting groove 103 is formed at the center of the distal end of the bone trimming mill 100. This first mounting groove 103 is used to cooperate with the connecting body 201 of the guide 200, and the protruding structure on its inner wall can engage with the transition groove 202 of the guide 200 to achieve circumferential positioning of the bone trimming mill 100 and prevent displacement during operation. A first through-flow channel 104 is provided at the axis of the bone trimming mill 100. When the bone trimming mill 100 is connected to the guide 200, the first through-flow channel 104 is coaxially connected with the axial flow channel 207 of the guide 200, which can assist in the discharge of debris and the introduction of coolant. In another embodiment, such as Figure 8 As shown, the end surface of the bone trimming mill 100 is also provided with a first stepped groove 105, which is connected to the first mounting groove 103 to increase the heat dissipation area.

[0043] like Figure 5As shown, the gingival trimming bone mill 300 is used for trimming gingival tissue after the smooth neck collar 401 is installed. Its structure is similar to that of the bone trimming bone mill 100. The first end has a second connecting part 301, which is also a standard implant handpiece interface. The end surface has a gingival cutting edge 302. The middle of the end has a second mounting groove 303, which is also used to mate with the connecting body 201 of the guide 200. A second through flow channel 304 is provided at the axis, which is coaxially connected with the axial flow channel 207 of the guide 200 to assist in the discharge and cooling of gingival debris. In another embodiment, the end surface of the gingival trimming bone mill 300 also has a second stepped groove, which communicates with the second mounting groove 303 to increase the heat dissipation area.

[0044] Operating instructions:

[0045] (1) Bone trimming operation: First, according to the brand and model of the implant 400 currently in use, select the corresponding adapter 206 and install it on the main body of the guide 200 (or directly select the corresponding guide 200 as a whole). Align the positioning connection part of the guide 200 with the platform of the implant 400 and connect the adapter 206 to the implant 400. Use an Allen wrench to insert into the Allen structure at the head end of the guide 200 and tighten it until the anti-slip teeth on the lower surface of the limiting platform 203 are pressed against the platform end face of the implant 400, completing the coaxial positioning and anti-rotation locking. Next, install the bone trimming grinder 100 onto the implant handpiece through the first connection part 101, and align its first mounting groove 103 with the connecting body 201 of the guide 200 and fit it in, so that the first mounting groove 103 engages with the transition groove 202. The implantation handpiece is activated, and the bone trimming mill 100 feeds axially along the guide 200 to trim the bone. When the end of the bone trimming mill 100 is blocked by the limiting stage 203, the trimming is completed. The bone fragments generated during the process are discharged sequentially through the transverse flow channel 204, the axial flow channel 207, and the first through flow channel 104.

[0046] (2) Gingival trimming procedure: After bone trimming is completed, remove the bone trimming mill 100. Install the same guide 200 directly onto the smooth neck collar 401. Then replace the bone trimming mill 100 with the gingival trimming mill 300, install it onto the implant handpiece, and fit the guide 200 through the second mounting slot 303. Start the handpiece to perform gingival trimming, with the depth controlled by the limiting stage 203. Debris is discharged through the transverse flow channel 204, the axial flow channel 207, and the second through flow channel 304.

[0047] At this point, the entire peri-implant bone preparation process is complete. Because the guide 200, bone preparation mill 100, and gingival preparation mill 300 are all modularly designed, when it is necessary to adapt to different brands of implants, only the guide 200 needs to be replaced, and the other parts do not need to be replaced, thus achieving universality and significantly reducing tool costs.

Claims

1. A peri-implant bone grafting system, characterized in that, It includes a guide, a bone trimming mill, and a gingival trimming mill; the bone trimming mill can be adapted and connected to the guide; the gingival trimming mill can be adapted and connected to the guide. The guide is provided with an installation connection part and a limiting positioning part; both the bone trimming bone mill and the gingival trimming bone mill have inner holes for fitting into the installation connection part; the limiting positioning part is used to limit the bone trimming bone mill or the gingival trimming bone mill when it moves along the axial direction of the guide, so as to control the trimming depth.

2. The peri-implant bone trimming system according to claim 1, characterized in that, The mounting connection of the guide includes a connecting body and a transition groove formed at the end of the connecting body; the end of the bone trimming mill is provided with a first mounting groove, and the end of the gingival trimming mill is provided with a second mounting groove; both the first mounting groove and the second mounting groove are used to cooperate with the transition groove to achieve circumferential positioning.

3. The peri-implant bone trimming system according to claim 1, characterized in that, The positioning connection part of the guide includes a limiting platform, a shoulder, and an adapter; the limiting platform and the shoulder are integrally formed; the adapter is connected to the main body of the guide and is used to connect with the implant or a smooth neck collar to achieve coaxial positioning.

4. The peri-implant bone trimming system according to claim 3, characterized in that, The lower surface of the limiting platform is provided with anti-slip teeth, which are used to press the guide against the platform end face of the implant after the guide is connected to the implant to prevent circumferential rotation.

5. The peri-implant bone trimming system according to claim 1, characterized in that, The guide is also provided with a flow channel, which includes an axial flow channel and a transverse flow channel; the outer end opening of the transverse flow channel is used to face the trimming operation area; the axial flow channel is arranged to run through the axial direction of the guide and is connected to the transverse flow channel.

6. The peri-implant bone trimming system according to claim 5, characterized in that, The bone trimming mill has a first through channel at its axis and the gingival trimming mill has a second through channel at its axis; when the bone trimming mill or the gingival trimming mill is adapted and connected to the guide, the first through channel or the second through channel is coaxially connected to the axial channel of the guide.

7. The peri-implant bone trimming system according to claim 1, characterized in that, The first end of the bone trimming mill is provided with a first connecting part for connecting with the implant mobile phone; the end surface of the bone trimming mill is provided with a bone cutting edge, and the outer peripheral contour of the bone cutting edge is adapted to the outer peripheral contour of the smooth neck ring.

8. The peri-implant bone trimming system according to claim 1, characterized in that, The first end of the gingival shaping bone mill is provided with a second connecting part for connecting with an implant handpiece; the end surface of the gingival shaping bone mill is provided with a cutting edge for the gingiva.

9. The peri-implant bone trimming system according to claim 7, characterized in that, The end surface of the bone trimming mill is also provided with a first stepped groove, which is connected to the first mounting groove for heat dissipation.

10. The peri-implant bone trimming system according to claim 3, characterized in that, The adapter and the main body of the guide are integrally molded, and different brands or models of implants can be adapted by replacing the guide.

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