A split type guide plate for precise implantation of oral implant bone augmentation tent nails

Abstract

The present application belongs to the technical field of medical devices, and particularly relates to a split type guide plate for precise implantation of tent nails for oral implant bone augmentation, which comprises a main body, a tent nail implantation guide plate and a bone implantation guide plate, a profiled occlusion groove is formed at the top of the main body, a connecting block is fixedly connected to the side wall of the side of the main body away from the tongue side, and the tent nail implantation guide plate and the bone implantation guide plate are detachably connected to the main body through the connecting block. The present application has the beneficial effect that the experience-based operation can be converted into quantitative standard operation by the main body, the tent nail implantation guide plate and the bone implantation guide plate, the experience requirement is reduced, and the surgery replicability is improved; meanwhile, the tent nail implantation site, depth and angle are precisely controlled in all dimensions, the surgery error is effectively reduced, and complications such as soft tissue injury, nail body exposure and bone formation failure are reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a split-type guide plate for precise implantation of bone augmentation tent screws in dental implants. Background Technology

[0002] With the widespread application of dental implant technology, insufficient alveolar bone volume has become a common problem in implant restoration of missing teeth. Tent pin-assisted tent top bone augmentation technology is widely used in horizontal bone augmentation, vertical bone augmentation, and localized bone defect repair surgeries due to its stable osteogenesis effect and ease of operation. During tent pin implantation, its head supports the soft tissue, providing a stable osteogenesis space for bone substitute materials, thereby achieving bone augmentation. In the surgical procedure, the tent pin needs to be precisely implanted in the predetermined position, and then shaped after filling the surrounding area with bone graft material such as bone powder.

[0003] However, in current clinical practice, the placement, depth, and angle of tented nail implantation rely entirely on the physician's subjective judgment based on their clinical experience, lacking specialized positioning and depth-determining tools. Misalignment of the implantation site can cause abnormal osteogenic spatial morphology; shallow implantation depth can lead to periosteal collapse and bone loss; and excessive implantation depth can damage deeper tissues, causing postoperative infections, nail exposure, and other complications. Furthermore, traditional procedures lack standardized procedures, resulting in poor surgical repeatability and a long learning curve for novice physicians. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of difficulty in accurately positioning tent pegs and poor repeatability in existing tent peg insertion methods.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A split-type guide for precise implantation of bone augmentation tent pins in oral implantation includes a main body, a tent pin implantation guide, and a bone grafting guide. The top of the main body has a contoured occlusal groove. A connecting block is fixedly connected to the side wall of the main body away from the lingual side. The tent pin implantation guide and the bone grafting guide are detachably connected to the main body via the connecting block. The tent pin implantation guide includes a first connecting arm with a first mounting groove at its bottom. A guide cylinder is fixedly connected to the top of the first connecting arm. A limiting platform is provided on the inner wall of the guide cylinder. The limiting platform is annular. Tent pins are disposed inside the guide cylinder. A connecting seam is provided on the side of the guide cylinder away from the first connecting arm. A pair of expansion blocks are symmetrically fixedly connected to the outer wall of the guide cylinder along the connecting seam. An expansion hole is provided in the middle of each expansion block along the axial direction of the guide cylinder.

[0007] Furthermore, the guide cylinder is made of an elastic material.

[0008] Furthermore, the bone graft guide plate includes a second connecting arm, a second mounting groove is provided at the bottom of the second connecting arm, and a covering part is fixedly connected to the top of the second connecting arm. The covering part has a filling port on the side facing the main body.

[0009] Furthermore, a contoured baffle is fixedly connected to the edge of the covering portion.

[0010] Furthermore, both the first and second mounting slots are matched to the shape of the connecting block.

[0011] Furthermore, the outer wall of the tent peg's tail is provided with external threads, and the head of the tent peg is provided with a material stop.

[0012] Furthermore, the tent peg has an installation groove at the center of its head.

[0013] Furthermore, the mounting groove is cross-shaped.

[0014] Furthermore, the diameter of the baffle is greater than the inner diameter of the limiting platform and smaller than the inner diameter of the guide cylinder.

[0015] Furthermore, the inner wall contour of the covering part matches the material blocking part.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The present invention provides a split guide plate for precise implantation of bone augmentation tent pins in oral implantation. By setting up a main body, a tent pin implantation guide plate and a bone grafting guide plate, it can transform experience-based operations into quantifiable standard operations, reduce experience requirements, and improve surgical reproducibility. At the same time, it can achieve precise control of the tent pin implantation site, depth and angle in all dimensions, effectively reducing surgical errors and complications such as soft tissue damage, pin exposure and bone formation failure.

[0018] 2. The present invention provides a split guide plate for precise implantation of dental implant bone augmentation tent pins. By providing a connecting block, a connecting seam, and an expansion block, after the tent pin is implanted, an outward expansion force can be applied to the expansion block through the expansion hole, causing the connecting seam to open, the inner diameter of the guide tube to expand, and the inner diameter of the limiting stage to expand accordingly. This releases the axial constraint of the limiting stage on the retaining part, allowing the guide tube to smoothly detach from the tent pin head. This avoids pulling or loosening the tent pin when the tent pin implantation guide plate is removed, effectively improving the positional stability of the tent pin after implantation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of a split guide plate for precise implantation of bone augmentation tent nails in oral implantation according to the present invention.

[0020] Figure 2This is a schematic diagram of the installation structure of a split-type guide plate for precise implantation of bone augmentation tent pins in oral implantation according to the present invention.

[0021] Figure 3 This is a schematic diagram of the installation structure of a split-type guide plate for precise implantation of bone augmentation tent nails in oral implantation according to the present invention.

[0022] Figure 4 This is a schematic diagram of a split guide plate tent nail structure for precise implantation of bone augmentation tent nails in oral implantation according to the present invention.

[0023] Figure 5 This is a schematic diagram of the bone grafting position structure of a split guide plate for precise implantation of bone augmentation tent pins in oral implantation according to the present invention.

[0024] Figure 6 This is a schematic diagram of the assembly structure of a split-type guide plate for precise implantation of bone augmentation tent pins in oral implantation according to the present invention.

[0025] Figure 7 This is a schematic diagram of the assembly structure of a split-type guide plate for precise implantation of bone augmentation tent nails in oral implantation according to the present invention.

[0026] Figure 8 This is a schematic diagram of a split guide plate filling structure for precise implantation of bone augmentation tent nails in oral implants according to the present invention.

[0027] In the diagram: 1. Main body; 2. Contouring interlocking groove; 3. Connecting block; 4. Tent nail implantation guide plate; 401. First connecting arm; 402. First mounting groove; 403. Guide cylinder; 404. Limiting platform; 405. Connecting seam; 406. Expansion block; 407. Expansion hole; 5. Bone graft guide plate; 501. Second connecting arm; 502. Second mounting groove; 503. Covering part; 504. Contouring baffle; 505. Filling port; 6. Tent nail; 601. External thread; 602. Material stop part; 603. Mounting groove. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] Please see Figures 1-8This embodiment of a dental implant bone augmentation tent pin precision implantation split guide includes a main body 1, a tent pin implantation guide 4, and a bone grafting guide 5. The top of the main body 1 has a contoured occlusal groove 2. A connecting block 3 is fixedly connected to the side wall of the main body 1 away from the lingual side. The tent pin implantation guide 4 and the bone grafting guide 5 are detachably connected to the main body 1 via the connecting block 3. The tent pin implantation guide 4 includes a first connecting arm 401, and the bottom of the first connecting arm 401 has a first mounting groove 402. A guide cylinder 403 is fixedly connected to the top of 01. A limiting platform 404 is provided on the inner wall of the guide cylinder 403. The limiting platform 404 is annular. Tent nails 6 are provided inside the guide cylinder 403. A connecting seam 405 is opened on the side of the guide cylinder 403 away from the first connecting arm 401. A pair of expansion blocks 406 are symmetrically fixedly connected to the outer wall of the guide cylinder 403 along the connecting seam 405. An expansion hole 407 is opened in the middle of the expansion block 406 along the axial direction of the guide cylinder 403. The guide cylinder 403 is made of elastic material. Preoperatively, the bone graft location is confirmed based on the patient's oral data (such as dental arch models or CBCT data). Based on the bone graft location, the main body 1, tent pin implantation guide 4, and bone graft guide 5 are fabricated using 3D printing. During the procedure, the main body 1 is first placed in the patient's oral cavity, with the contoured occlusal groove 2 conforming to the patient's dentition or alveolar ridge to achieve stable positioning of the main body 1. Then, the tent pin implantation guide 4 is fixed to the connecting block 3 via the first mounting groove 402, aligning the guide cylinder 403 with the predetermined implantation position. Subsequently, the tent pin 6 is inserted into the guide cylinder 403 from its outer end. During installation, the dentist inserts a rotating tool (such as a Phillips screwdriver) into the mounting groove 603, driving the tent pin 6 to rotate along the guide cylinder 403 and implant it into the alveolar bone. When the stop part 602 descends to abut against the limiting stage 404, the tent pin 6 cannot descend further, precisely limiting the implantation depth. After implantation, an expansion tool is inserted into a pair of expansion holes 407 and expanded to both sides. Because the guide tube 403 is made of elastic material, the expansion block 406 drives the side wall of the guide tube 403 to open outward, the connecting seam 405 expands accordingly, the inner diameter of the guide tube 403 increases, the inner diameter of the limiting stage 404 also increases and disengages from the stop part 602, and then the tent nail implantation guide plate 4 is removed from the connecting block 3 and taken out. Through the above steps, the implantation position and depth of the tent nail 6 can be accurately located, effectively reducing surgical errors and complications such as soft tissue damage, nail exposure, and osteogenic failure. Moreover, the tent nail implantation guide plate 4 can be quickly disassembled after the tent nail 6 is implanted, avoiding traction or loosening of the tent nail 6 during disassembly. At the same time, empirical operations can be transformed into quantitative standard operations, reducing experience requirements and improving the reproducibility of the surgery.

[0031] The bone graft guide plate 5 includes a second connecting arm 501. A second mounting groove 502 is provided at the bottom of the second connecting arm 501, and a covering part 503 is fixedly connected to the top of the second connecting arm 501. A filling port 505 is provided on the side of the covering part 503 facing the main body 1. After the tent nail 6 is implanted and removed from the guide plate 4, the bone graft guide plate 5 is fixed to the connecting block 3 via the second mounting groove 502, so that the covering part 503 covers the top of the tent nail 6. The surgeon fills the covering part 503 with bone powder through the filling port 505, ensuring the bone powder is evenly distributed in the bone defect area at the bottom of the tent nail 6. These steps simplify intraoperative replacement operations and achieve precise delivery and positioning of the bone powder.

[0032] A contoured baffle 504 is fixedly connected to the edge of the covering portion 503. After the bone graft guide plate 5 is installed, the lower edge of the contoured baffle 504 fits against the edge of the bone defect site, forming a closed or semi-closed filling space together with the bone defect area. After the bone powder is filled into the covering portion 503 through the filling port 505, the contoured baffle 504 matches the edge of the bone defect to constrain and shape the outer contour of the bone powder, so that the bone powder forms a filling contour at the bottom of the tent nail 6 that matches the shape of the bone defect, preventing the bone powder from spreading to the non-defect area. The inner wall of the contoured baffle 504 is adapted to the retaining part 602 of the tent nail 6 to ensure that the bone powder fits tightly against the bottom and around the retaining part 602, avoiding cavities or insufficient filling.

[0033] Both the first mounting groove 402 and the second mounting groove 502 are matched with the shape of the connecting block 3. The matching of the first mounting groove 402 and the second mounting groove 502 with the shape of the same connecting block 3 allows the tent nail implantation guide plate 4 and the bone graft guide plate 5 to share the same installation reference, ensuring the positional consistency of the two processes of implantation and bone grafting, avoiding errors caused by repeated positioning, reducing the difficulty of operation, and improving the repeatability of the surgery.

[0034] The tent nail 6 has an external thread 601 on its outer side at the tail end and a stop 602 at its head. An installation groove 603, cross-shaped, is located at the center of the head of the tent nail 6. During implantation, the doctor inserts a Phillips screwdriver into the installation groove 603 and rotates it to drive the tent nail 6 along the guide tube 403 into the bone, causing the external thread 601 at its tail to screw into the alveolar bone. The thread forms a mechanical lock with the bone tissue, ensuring stability after implantation. The stop 602 is located at the head of the tent nail 6 and descends with it during insertion. When the lower end face of the stop 602 contacts the upper end face of the limiting platform 404, the tent nail 6 can no longer descend, indicating the implantation depth is reached, facilitating precise limiting of the implantation depth.

[0035] The diameter of the baffle 602 is larger than the inner diameter of the limiting platform 404 but smaller than the inner diameter of the guide cylinder 403. This design ensures reliable positioning during implantation and facilitates smooth detachment after implantation through the expansion of the connecting seam 405.

[0036] The inner wall contour of the covering part 503 matches the retaining part 602. After the bone graft guide plate 5 is installed, the covering part 503 covers the outside of the retaining part 602 of the tent peg 6, and the inner wall contour of the covering part 503 fits the outer surface of the retaining part 602, so that the bone powder is evenly guided to the bone defect area below the retaining part 602 during filling, and the bone powder is prevented from accumulating or overflowing above the retaining part 602.

[0037] Example 2

[0038] This embodiment describes a method for using a split-type surgical guide for precise implantation of bone augmentation tent pins in dental implants. The method employs the split-type surgical guide for precise implantation of bone augmentation tent pins as described in Embodiment 1, and includes the following steps:

[0039] S1. Before the operation, the bone graft position is confirmed based on the patient's oral data (dental arch model or CBCT data). Based on the bone graft position, the main body 1, tent nail implantation guide plate 4 and bone graft guide plate 5 are made using 3D printing technology.

[0040] S2. Place the main body 1 in the patient's oral cavity, so that the occlusal groove 2 fits against the patient's dentition or alveolar ridge, thereby achieving stable positioning of the main body 1 in the oral cavity.

[0041] S3. The tent peg insertion guide plate 4 is fixed to the connecting block 3 on the main body 1 through the first mounting groove 402, so that the guide cylinder 403 is aligned with the predetermined tent peg insertion position.

[0042] S4. Insert the tent nail 6 into the guide tube 403 from the outer end of the guide tube 403. The doctor uses a Phillips screwdriver to insert into the mounting groove 603 at the head of the tent nail 6 and rotates it to drive the tent nail 6 to screw into the alveolar bone along the guide tube 403. The external thread 601 at the tail of the tent nail 6 is screwed into the alveolar bone. When the stop part 602 descends to abut against the limiting stage 404, the tent nail 6 can no longer descend, thus completing the precise limiting of the implantation depth.

[0043] S5. After implantation, use an expansion tool to insert a pair of expansion holes 407 and expand to both sides. The expansion block 406 drives the side wall of the guide cylinder 403 to open outward, and the connecting seam 405 expands accordingly. The inner diameter of the guide cylinder 403 increases, and the inner diameter of the limiting platform 404 increases accordingly and disengages from the baffle part 602. Then, the tent nail implantation guide plate 4 is removed from the connecting block 3 and taken out.

[0044] S6. The bone graft guide plate 5 is fixed to the connecting block 3 on the main body 1 through the second mounting groove 502, so that the covering part 503 covers the top of the tent nail 6, and the lower edge of the contoured baffle 504 fits with the edge of the patient's bone defect area, together with the bone defect area to form a filling space.

[0045] S7. Bone powder is filled into the covering part 503 through the filling port 505. The contoured baffle 504 cooperates with the edge of the bone defect to constrain and shape the outer contour of the bone powder, so that the bone powder forms a filling contour at the bottom of the tent peg 6 that matches the shape of the bone defect. The inner wall contour of the covering part 503 fits with the outer surface of the baffle part 602, so that the bone powder is evenly guided to the bone defect area below the baffle part 602.

[0046] S8. After the bone powder filling is completed, the bone graft guide plate 5 is removed from the connecting block 3 to complete the tent nail implantation and bone grafting operation of the bone augmentation surgery.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A split-type guide plate for precise implantation of bone augmentation tent screws in oral implants, characterized in that: The device includes a main body (1), a tent nail implantation guide plate (4), and a bone graft guide plate (5). The top of the main body (1) has a contoured occlusal groove (2). A connecting block (3) is fixedly connected to the side wall of the main body (1) away from the lingual side. The tent nail implantation guide plate (4) and the bone graft guide plate (5) are detachably connected to the main body (1) through the connecting block (3). The tent nail implantation guide plate (4) includes a first connecting arm (401). The bottom of the first connecting arm (401) has a first mounting groove (402). The top of the first connecting arm (401) is fixedly connected to the main body (1). A guide cylinder (403) is fixedly connected. A limiting platform (404) is provided on the inner wall of the guide cylinder (403). The limiting platform (404) is annular. Tent nails (6) are provided inside the guide cylinder (403). A connecting seam (405) is opened on the side of the guide cylinder (403) away from the first connecting arm (401). A pair of expansion blocks (406) are symmetrically fixedly connected to the outer wall of the guide cylinder (403) along the connecting seam (405). An expansion hole (407) is opened in the middle of the expansion block (406) along the axial direction of the guide cylinder (403).

2. The split-type guide plate for precise implantation of bone augmentation tent screws in oral implantation according to claim 1, characterized in that: The guide tube (403) is made of an elastic material.

3. The split-type guide plate for precise implantation of bone augmentation tent screws in oral implantation according to claim 1, characterized in that: The bone graft guide plate (5) includes a second connecting arm (501), a second mounting groove (502) is provided at the bottom of the second connecting arm (501), and a covering part (503) is fixedly connected to the top of the second connecting arm (501). The covering part (503) has a filling port (505) on the side facing the main body (1).

4. The split-type guide plate for precise implantation of bone augmentation tent screws in oral implantation according to claim 3, characterized in that: The edge of the covering part (503) is fixedly connected with a contoured baffle (504).

5. A split-type guide plate for precise implantation of bone augmentation tent screws in oral implantation according to claim 3, characterized in that: The first mounting groove (402) and the second mounting groove (502) are both matched with the shape of the connecting block (3).

6. A split-type guide plate for precise implantation of bone augmentation tent screws in oral implantation according to claim 3, characterized in that: The tent peg (6) has an external thread (601) on the outer side wall of its tail, and a baffle (602) is provided at the head of the tent peg (6).

7. A split-type guide plate for precise implantation of bone augmentation tent screws in oral implantation according to claim 6, characterized in that: The tent peg (6) has an installation groove (603) at the center of its head.

8. A split-type guide plate for precise implantation of bone augmentation tent screws in oral implantation according to claim 7, characterized in that: The mounting slot (603) is cross-shaped.

9. A split-type guide plate for precise implantation of bone augmentation tent screws in oral implantation according to claim 6, characterized in that: The diameter of the baffle (602) is greater than the inner diameter of the limiting stage (404) and less than the inner diameter of the guide cylinder (403).

10. A split-type guide plate for precise implantation of bone augmentation tent screws in oral implantation according to claim 6, characterized in that: The inner wall contour of the covering part (503) matches the material blocking part (602).

Images