Extracorporeal implant fixing device for extraosseous implant tooth

Abstract

The utility model relates to the technical field of implants, in particular to an implant external fixing device for an extraosseous implant tooth, which solves the problem of long bone grafting treatment period when the bone width of a patient is insufficient, and comprises a fixing body for an implant, the fixing body comprises a limiting structure and connecting structures, the limiting structure is of an arc-shaped structure, the connecting structures are fixed to the two ends of the limiting structure respectively, the bottom of each connecting structure is connected with a locking block structure with a locking function, and the bottom of each locking block structure is provided with a transition structure with a guiding function. The fixing bodies are respectively arranged at the neck, the middle and the root of the implant, the operation is simple and convenient, the pain of a patient is small, the healing effect is good, the chair-side time of the patient is shortened, and the implant has a good development prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of implants, in particular to an external fixation device for implants outside the bone. Background Art

[0002] Currently, there are usually three main steps in implant restoration treatment for patients with edentulous arches: a primary surgery to implant the implant; a secondary surgery 3-6 months after implant placement to expose the implant sealing screw and replace it with a healing abutment to heal and shape the soft tissue around the implant; after the soft tissue shaping has stabilized for 3-6 months, a mold is taken and a permanent restoration abutment and crown restoration are made, which are installed and fixed on the implant in the patient's mouth to complete the implant restoration treatment process.

[0003] From the above steps, we can see the inconvenience of conventional implant restoration. Therefore, immediate implant restoration is a common and popular choice in dental implant surgery. It reduces the number of surgeries, shortens the course of treatment, and reduces the pain of patients. However, the indications of immediate implant restoration are relatively stricter, especially the requirements for alveolar bone volume.

[0004] Most patients have different forms and types of bone defects. In particular, when the bone defect symptoms are normal in height but severely insufficient in width, implant restoration often requires bone augmentation and bone grafting in clinical surgery, and then 6-12 months of bone tissue compatibility and new bone formation before implant restoration can be performed. Furthermore, when the bone width is severely insufficient, how to perform immediate implant surgery with simpler operation, less pain for patients, and better healing effect has been a major research difficulty in the development of oral implantology in recent years.

[0005] In view of the above defects of the prior art, an extra-osseous dental implant fixation device is designed. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an extra-bone dental implant external fixation device to solve the problem of long bone grafting treatment period when the patient's bone width is insufficient.

[0007] The technical solution is an external fixation device for an extra-bone dental implant, comprising a fixing body for the implant, the fixing body comprising a limiting structure and a connecting structure, the limiting structure is an arc-shaped structure, and the two ends are respectively fixed with connecting structures, the bottom of each connecting structure is connected to a locking block structure with a locking function, and the bottom of each locking block structure is provided with a transition structure with a guiding function.

[0008] Through the above structure, when in use, the locking effect of clamping can be achieved in the hole of the alveolar bone according to the locking block structure; the transition structure can be smoothly positioned in the hole of the alveolar bone to achieve the guiding role; and it can avoid abrasions caused by contact with the soft tissue in the patient's mouth, further avoiding unnecessary injuries; the connecting structure is directly connected to the locking block structure, and when in use, the specific position of the implant away from the bone surface of the corresponding part can be maintained and fixed, and finally after bone grafting, the position of the implant can be ensured to meet the requirements of implant restoration; the limiting structure realizes the limiting effect of the implant to avoid displacement of the implant during the bone integration stage.

[0009] Furthermore, each of the connecting structures is a cylindrical structure with a circular cross-section, and its diameter ranges from 0.3 mm to 0.6 mm.

[0010] Furthermore, the inner diameter of the limiting structure matches the radial cross section of 1 / 3 of the implant.

[0011] Furthermore, each locking block structure edge is fixedly connected to the connecting structure.

[0012] Furthermore, the locking block structure is an elliptical column structure.

[0013] Furthermore, the locking block structure is a bent structure.

[0014] Furthermore, the locking block structure is a fixed-wing structure.

[0015] Furthermore, the transition structure is a semi-spherical structure.

[0016] Furthermore, the transition structure is a chamfered structure.

[0017] At the same time, the patented technology also provides a method for using an extra-bone dental implant external fixation device in which the maxillary bone height is normal but the bone width is seriously insufficient, including the following steps:

[0018] A. First, the clinician needs to arrange for the patient to undergo CBCT imaging;

[0019] B. Write implant surgery report by taking CBCT images and combining them with 3D design software, and make implant guides;

[0020] C. Implant the implant in the alveolar bone of the patient's mouth according to the implant guide, and install the implant cover screw;

[0021] D. Use drilling tools to drill holes on the corresponding bone surface and install the fixed body;

[0022] E. Bone grafting is performed at the site of exposed implants and fixed with titanium mesh to maintain the bone formation space;

[0023] F. Release and suture the periostium;

[0024] G. Wait for further reconstruction of bone tissue;

[0025] H. After bone tissue reconstruction is completed, remove the implant cover screw and transfer the implant position information to the outside of the mouth;

[0026] I. Make the final restoration abutment and denture to complete the implant restoration;

[0027] The technical effects of the utility model are: 1. In the case of severe lack of bone width in patients, the indication range of immediate implant surgery can be made wider, and the treatment options available to patients are more diverse; 2. It makes the surgical operation easier for clinicians, reduces the pain of patients, and achieves better healing effects, playing an important role in the increasingly mature basic research of oral implantology; 3. The time patients spend waiting for recovery is greatly reduced, thereby shortening the patient's chairside time, solving the patient's discomfort due to missing teeth, and restoring the patient's chewing function and the aesthetics of missing teeth earlier, bringing patients a better implant restoration experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the utility model.

[0029] Figure 2 It is a schematic diagram of the structure of the utility model in use state. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1: Figure 1 Provided is an external fixation device for an extra-bone dental implant, comprising a fixing body 11 for an implant 41, wherein the fixing body comprises a limiting structure 114 and a connecting structure 113, wherein the limiting structure 114 is an arc-shaped structure, and the connecting structures 113 are respectively fixed at both ends, and the bottom of each connecting structure 113 is connected to a locking block structure 111 with a locking function, and the edge of each locking block structure 111 is fixedly connected to the connecting structure, and a transition structure 112 with a guiding function is arranged at the bottom of each locking block structure 111.

[0032] In the above embodiment, each of the connecting structures 113 is a cylindrical structure with a circular cross section, and its diameter ranges from 0.3 mm to 0.6 mm;

[0033] In the above embodiment, the inner diameter of the limiting structure 114 matches 1 / 3 of the radial cross section of the implant 41 .

[0034] In the above embodiment, the locking block structure 111 is any one of an elliptical column structure, a bending structure, and a fixed wing structure having a locking function.

[0035] In the above embodiment, the transition structure 112 is a semi-spherical structure or a chamfered structure having a guiding function.

[0036] Embodiment 2: By Figure 2 Provided is a method for using an extra-bone dental implant external fixation device in which the maxillary bone height is normal but the bone width is seriously insufficient, comprising the following steps:

[0037] A. First, the clinician needs to arrange for the patient to undergo CBCT imaging;

[0038] B. Write implant surgery report by taking CBCT images and combining them with 3D design software, and make implant guides;

[0039] C. Implant the implant in the alveolar bone in the patient's mouth according to the implant guide, and install the implant 41 cover screw;

[0040] D. Use drilling tools to drill holes on the corresponding bone surface and install the fixed body;

[0041] E. Bone grafting is performed at the site of exposed implants and fixed with titanium mesh to maintain the bone formation space;

[0042] F. Release and suture the periostium;

[0043] G. Wait for further reconstruction of bone tissue;

[0044] H. After bone tissue reconstruction is completed, remove the implant cover screw and transfer the implant position information to the outside of the mouth;

[0045] I. Make the final restoration abutment and denture to complete the implant restoration;

[0046] In the above embodiment, in step A, guiding the patient to take CBCT images can help the doctor to conveniently and intuitively discover various hidden dental problems, and can also switch different perspectives to observe the positional relationship between soft tissues, avoid dangerous areas in the surgical plan, ensure the safety of the surgery, and make doctor-patient communication simple and efficient; CBCT images can be used to evaluate the bone quality and bone volume of the patient's jaw before the operation, and to understand the position of important tissues such as the inferior alveolar nerve canal and maxillary sinus;

[0047] In the above embodiment, in step B, the feasibility of the implant surgery, as well as the type, size, implantation position, implantation path, implantation depth and other parameters of the implant are determined based on the CBCT film; with the help of 3D design software, the auxiliary implant surgery is designed, the implantation guide is made, and the position, direction, length, diameter, etc. of the implant are accurately controlled to maximize the use of the patient's existing bone volume, optimize the position of the implant, and avoid inadvertent damage to anatomical structures such as nerves and maxillary sinuses during the implant surgery, which may lead to complications such as facial nerve paralysis and sinusitis. Make the implant surgery safer and more convenient, and ensure the success of the surgery and subsequent repairs; with the help of CBCT films combined with 3D design software, it can be clearly seen that the alveolar process top 21 is extremely narrow. After selecting the corresponding model of the implant 41, the position of the implant 41 is accurately controlled, including the position of the implant 41 relative to the labial alveolar process bottom 25, the alveolar process bottom 24, the palatal alveolar process bottom 23, the palatal alveolar process 22 and the alveolar process top 21, and use software measurement tools to detect the thickness of the cortical bone 26 and the distance from the bone defect end of the root of the implant 41 to the labial alveolar process cortical bone 26, and make an implant guide according to the position of the implant 41 at this time; according to the position and relative distance of the implant 41, select the specific model of the implant external fixation device 1.

[0048] In the above embodiment, in step C, the inside and outside of the oral cavity must be thoroughly disinfected before the implant surgery, and the inflammatory tissue in the implant area must be removed with sterilized instruments. Local anesthesia is performed, the flap is opened to expose the alveolar ridge, and the soft tissue at the bone defect is opened to facilitate the implant surgery. The implant cover screw is installed to seal the hole on the implant and prevent the entry of bacteria and soft and hard tissues.

[0049] In the above embodiment, in step D, by using the pilot drill in the clinical implant tool, small holes are opened at the root 1 / 3, middle 1 / 3, neck 1 / 3 and both sides of the exposed implant 41 to accommodate the locking block structure 111 of the implant neck external fixation device 11, the locking block structure 121 of the implant middle external fixation device 12 and the locking block structure 131 of the implant root external fixation device 13, so as to fix the implant 41; the implant external fixation device 1 uses pure titanium TA2 of the same material as the implant 41, and the surface is subjected to the same sandblasting and acid etching surface treatment as the implant 41, which is conducive to the later bone integration.

[0050] In the above embodiment, in step E, when bone grafting is performed at the site where the implant is exposed, attention should be paid to the influence of the thickness of the labial and buccal bone wall on its aesthetic effect, and the labial and buccal bone wall around the implant should be as thick as possible to ensure the long-term stability of the soft tissue in the later stage, thereby providing a good foundation for the aesthetic restoration of the implant; when placing the titanium mesh, the later bone absorption should be considered, therefore, the titanium mesh should be placed at least 2.5 mm outside the implant 41, and sufficient bone forming space should be created as much as possible, so as to finally form a bone volume that meets the requirements around the extra-bone implant to achieve the effect of extra-bone dental implant.

[0051] In the above embodiment, in step G, during the 3-6 months of bone formation, the patient should be reviewed and CBCT images should be taken to analyze the formation of bone mass, so as to prepare for the subsequent implant restoration.

[0052] A fixing body is provided at the neck, middle and root of the implant respectively; the corresponding structural dimensions of the fixing body are consistent with the radial cross-sectional dimensions of the root 1 / 3, middle 1 / 3 and neck 1 / 3 of the implant; implants on the market usually have a tapered structure, and the inner diameter of the limiting structure is adjusted accordingly, and the specifications of the fixing body are combined with the position to be large, medium and small, so that the fixation of the implant is more firmly and the fitting effect is more outstanding.

[0053] The present invention is described in detail above through specific implementation methods and examples, but these do not constitute limitations of the present invention. Without departing from the principle of the present invention, those skilled in the art may make many modifications and improvements, which should also be considered as the protection scope of the present invention.

Claims

1. An external fixation device for an extra-bone dental implant, comprising a fixing body (11) for an implant (41), characterized in that: The fixed body comprises a limiting structure (114) and a connecting structure (113); the limiting structure (114) is an arc-shaped structure, and the connecting structures (113) are respectively fixed at both ends; the bottom of each connecting structure (113) is connected to a locking block structure (111) having a locking function; and the bottom of each locking block structure (111) is provided with a transition structure (112) having a guiding function.

2. The external fixation device for extra-bone dental implant according to claim 1, characterized in that: Each of the connecting structures (113) is a cylindrical structure with a circular cross-section, and its diameter ranges from 0.3 mm to 0.6 mm.

3. The external fixation device for extra-bone dental implant according to claim 1, characterized in that: The inner diameter of the limiting structure (114) matches 1 / 3 of the radial cross section of the implant (41).

4. The external fixation device for extra-bone dental implant according to claim 1, characterized in that: The edge of each locking block structure (111) is fixedly connected to the connecting structure.

5. The external fixation device for extra-bone dental implant according to claim 4, characterized in that: The locking block structure (111) is an elliptical column structure.

6. The external fixation device for extra-bone dental implant according to claim 4, characterized in that: The locking block structure (111) is a bent structure.

7. The external fixation device for extra-bone dental implant according to claim 4, characterized in that: The locking block structure (111) is a fixed-wing structure.

8. The external fixation device for extra-bone dental implant according to claim 1, characterized in that: The transition structure (112) is a semi-spherical structure.

9. The external fixation device for extra-bone dental implant according to claim 1, characterized in that: The transition structure (112) is a chamfered structure.

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