Bone-supported maxillary posterior long implant implant guide based on 3D printing technology

Abstract

The present invention relates to a bone-supported maxillary posterior long implant implantation guide seat based on three-dimensional printing technology in the field of medical device technology, comprising: a maxillary bone in-place fixing plate, fixedly fitted to the maxillary bone; an implantation guide ring, which is arranged as a circular sleeve structure and is coaxial with an implantation drill, the implantation guide ring is located below the maxillary bone and directly opposite to the implantation position of the maxillary bone; a guide member, the guide member is coaxially and detachably inserted into the implantation guide ring, and has a positioning hole that penetrates along the axial direction, accommodates the implantation drill and matches the implantation drill; a pair of connecting rods, the two connecting rods integrally connect the maxillary bone in-place fixing plate and the implantation guide ring; wherein the maxillary bone in-place fixing plate, the implantation guide ring, the guide member and the pair of connecting rods are integrally formed. The adoption of this scheme can make the implantation operation simpler, more accurate and faster.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a bone-supported maxillary posterior long implant implantation guide seat. Background Art

[0002] Artificial dental implants have gradually become an important means of restoring missing teeth. With the development of dental implant technology, many patients who were originally unable to undergo dental implants due to insufficient alveolar bone can now undergo dental implants and have achieved good restoration results. Conventional maxillary molar dental implants require implants with a length of at least 6 to 12 mm, and the implantation and hole preparation process should avoid penetrating the maxillary sinus floor (to avoid maxillary sinus infection and implant failure risks). However, due to the disuse absorption of alveolar bone and the decrease in gasification of the maxillary sinus floor after tooth loss, the remaining alveolar bone volume in the maxillary molar area after tooth loss is often significantly insufficient, making implant restoration difficult to achieve. In order to solve the problem of insufficient alveolar bone in the maxillary molar area, commonly used treatment methods can be divided into the following according to the surgical approach: (1) the use of ultra-short implants (there is a problem of insufficient stability after implantation and it cannot be used alone to repair a single missing posterior tooth); (2) maxillary sinus floor augmentation (there are serious complications such as postoperative infection and poor ossification after bone grafting); (3) ALL ON4 technology (only suitable for the restoration of fully edentulous jaws); (4) the use of angled transpteranoid plates or transzygomatic implants (due to the long length of the implant, the angle and depth of implantation need to be precisely controlled, which requires high surgical skills).

[0003] With the development of digital oral surgery technology and the design update of the implant itself, cases with insufficient alveolar bone in the posterior teeth tend to choose a simple, effective and low-risk implant restoration method, that is, using angled transalauricular plates or transzygomatic implants for molar area implant restoration, and there are more and more related clinical reports.

[0004] Many scholars have reported on the use of preoperative digital design + intraoperative navigation technology to make personalized designs and accurate executions according to the specific morphology of each patient's maxilla. We believe that this solution has the following problems: 1. The placement of the surgical navigation registration bracket requires additional incisions, which causes secondary damage; 2. The loosening of the navigation positioning bracket leads to errors between the designed position and the actual position; 3. The overall navigation surgery takes a long time, leading to problems such as postoperative swelling, infection, and increased intraoperative bleeding.

[0005] There are also a few scholars and patents that have reported on the use of digital design and implant guides to guide implant operations. However, due to the limitations of design, production and guide materials, this type of technology is only suitable for conventional implant operations. For angled trans-alateric or trans-zygomatic implants, previous guides have the defects of insufficient strength, excessive thickness, difficulty in ensuring accurate positioning and depth control, which in turn leads to poor implant guidance accuracy and cannot be truly applied in clinical practice. Summary of the invention

[0006] The purpose of the present invention is to provide a bone-supported maxillary posterior long implant implantation guide based on three-dimensional printing technology, so as to make the implantation operation simpler, more accurate and faster.

[0007] The object of the present invention is achieved as follows: a bone-supported maxillary posterior long implant implant guide based on three-dimensional printing technology, comprising:

[0008] The maxillary bone is fixed in place with a plate that fits the maxillary bone;

[0009] The implantation guide ring is provided as a circular sleeve structure and is coaxial with the implantation drill, and the implantation guide ring is located under the maxillary bone and directly faces the implantation position of the maxillary bone;

[0010] A guide member, which is coaxially and detachably inserted into the implant guide ring portion and has a positioning hole that penetrates along the axial direction, accommodates the implant drill and matches the implant drill;

[0011] A pair of connecting rods, the two connecting rods integrally connect the maxillary bone seating fixation plate and the implant guide ring;

[0012] Among them, the above-mentioned maxillary bone positioning fixing plate, implantation guide ring, guide member and a pair of connecting rods are integrally formed.

[0013] The beneficial effects of the present invention are:

[0014] 1. Make the implantation position, angle and depth more accurate, reduce the operation time, avoid secondary injury, increased bleeding and increased risk of postoperative swelling and infection;

[0015] 2. It can be used for implantation through the pterygoid plate and implantation through the zygomatic bone, making the implantation operation simpler, more accurate and faster;

[0016] 3. Due to the provision of the implantation guide ring and the guide piece, the implantation angle of the implantation drill can be accurately limited, wherein the guide piece has a positioning hole that matches the implantation drill, and the guide piece with positioning holes of different specifications can be flexibly selected according to the thickness of the implantation drill, thereby ensuring the accuracy of the implantation depth and angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a first embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Enlarged view of part A in .

[0019] Figure 3 It is a schematic diagram of the first embodiment from another viewing angle.

[0020] Figure 4Schematic diagram of the second embodiment.

[0021] Figure 5 It is a schematic diagram of the second embodiment from another viewing angle.

[0022] In the figure, 1 is a maxillary fixation plate, 1a is a retention hole, 1b is a bone removal observation window, 2 is a connecting rod, 3 is an implant guide ring, 4 is a guide piece, 5 is an implant drill, 6 is a maxillary bone, and 7 is a zygomatic bone. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figure 1-3 As shown, the first embodiment is used for trans-pterygoid plate implantation surgery, and the bone-supported maxillary posterior long implant implantation guide based on 3D printing technology includes:

[0025] The maxillary bone is fixed in place with a fixing plate 1, fixedly fitted to the maxillary bone 6;

[0026] The implantation guide ring 3 is configured as a circular sleeve structure and is coaxial with the implantation drill 5. The implantation guide ring 3 is located below the maxillary bone 6 and faces the implantation position of the maxillary bone 6. In this embodiment, one axial end of the implantation guide ring 3 faces and is close to the implantation position of the maxillary bone 6.

[0027] A guide member 4, which is coaxially and detachably inserted into the implant guide ring portion 3 and has a positioning hole that penetrates along the axial direction, accommodates the implant drill 5 passing through, and matches the implant drill 5 passing through;

[0028] A pair of connecting rods 2 are provided, wherein the two connecting rods 2 integrally connect the maxillary bone seating fixation plate 1 and the implant guide ring 3 .

[0029] The maxillary bone placement fixing plate 1, the implant guide ring 3, the guide member 4 and the pair of connecting rods 2 are integrally formed by 3D printing, and may be made of titanium, titanium alloy and other suitable materials that may be used. The maxillary bone placement fixing plate 1 matches the area to be fixed on the surface of the maxillary bone 6 in shape, and the maxillary bone placement fixing plate 1 completely fits the area to be fixed on the surface of the maxillary bone 6.

[0030] The above-mentioned maxillary seating and fixing plate 1 is provided with at least two retention holes 1a for the titanium nails to pass through and fix the maxillary seating and fixing plate 1 on the surface of the maxillary bone 6. The number and positions of the retention holes 1a are not limited. The positions of all the retention holes 1a of the maxillary seating and fixing plate 1 are provided with boss molding structures. The retention holes 1a penetrate the corresponding boss molding structures, thereby enhancing the structural strength of the retention holes 1a to better withstand the locking effect of the titanium nails.

[0031] In order to prevent structural interference and enhance the connection strength, the two connecting rods 2 are both configured as arc-shaped rods, and the inner arc sides of the two connecting rods 2 leave the maxilla 6 away.

[0032] When in use, the maxillary fixation plate 1 is placed on the corresponding position of the maxillary bone 6. Due to the irregularity of the surface of the maxillary bone 6 and the personalization of the metal printing, the maxillary fixation plate 1 has high strength, thin thickness and accurate shape. The maxillary fixation plate 1 completely fits the preset area to be fixed on the surface of the maxillary bone 6. The maxillary fixation plate 1 is provided with more than two retention holes 1a, and after it is in place, it can be temporarily fixed at a predetermined position with titanium nails. Since the implantation guide ring 3 and the guide member 4 are provided, the implantation angle of the implantation drill 5 can be accurately limited, wherein the guide member 4 has a positioning hole that matches the implantation drill 5, and the guide member 4 with positioning holes of different specifications can be flexibly selected according to the thickness of the implantation drill 5, thereby ensuring the accuracy of the implantation depth and angle.

[0033] like Figure 4-5 As shown, the second embodiment is used for transzygomatic implant surgery. Compared with the first embodiment, the second embodiment is different in that: a part of the maxillary seating plate 1 extends to the zygomatic bone 7 and is fixedly fitted to the zygomatic bone 7, and the other part of the maxillary seating plate 1 extends toward the nostril. The maxillary seating plate 1 is provided with a boneless observation window 1b for observing the implantation path. The maxillary sinus mucosa is within the boneless observation window 1b. The boneless observation window 1b is a long strip hole structure, and its length direction conforms to the implantation path.

[0034] The use principle of the second embodiment differs from that of the first embodiment in that: during transzygomatic implantation, it is sometimes necessary to perform bone removal on the surface of the maxillary bone 6 to expose and protect the maxillary sinus mucosa and determine the implantation path of the implant. Therefore, it is necessary to set a bone removal observation window 1b on the maxillary bone seating fixation plate 1 to allow personalized bone removal on the surface of the designed implantation path during transzygomatic implantation to protect the maxillary sinus mucosa, ensure the penetration accuracy of the implant drill 5, and control and maintain the minimum amount of bone removal.

[0035] The above are preferred embodiments of the present invention. A person skilled in the art may make various changes or improvements on this basis. Without departing from the general concept of the present invention, these changes or improvements should fall within the scope of protection required by the present invention.

Claims

1. A bone-supported maxillary posterior long implant implant guide based on 3D printing technology, characterized in that: include: A maxillary bone seating fixation plate (1) is fixedly fitted to the maxillary bone (6); The implantation guide ring (3) is configured as a circular sleeve structure and is coaxial with the implantation drill (5); the implantation guide ring (3) is located below the maxillary bone (6) and directly faces the implantation position of the maxillary bone (6); A guide member (4), the guide member (4) is coaxially and detachably inserted into the implantation guide ring portion (3), and has a positioning hole that penetrates along the axial direction, accommodates the implantation drill (5) to pass through, and matches the implantation drill (5) that passes through; A pair of connecting rods (2), wherein the two connecting rods (2) integrally connect the maxillary bone seating fixation plate (1) and the implant guide ring (3); The maxillary bone positioning fixing plate (1), the implantation guide ring (3), the guide member (4) and the pair of connecting rods (2) are integrally formed; The maxillary bone seating and fixing plate (1) is provided with at least two fixing holes (1a) for titanium nails to pass through and fix the maxillary bone seating and fixing plate (1) to the surface of the maxillary bone (6); The two connecting rods (2) are both configured as arc-shaped rods, and the inner arc sides of the two connecting rods (2) are away from the maxillary bone (6); A portion of the maxillary bone seating fixation plate (1) extends to the zygomatic bone (7) and is fixedly fitted to the zygomatic bone (7).

2. The bone-supported maxillary posterior long implant implant guide based on three-dimensional printing technology according to claim 1, characterized in that: Another part of the maxillary bone seating and fixing plate (1) extends towards the nostril.

3. The bone-supported maxillary posterior long implant implant guide based on three-dimensional printing technology according to claim 1, characterized in that: The maxillary bone seating fixation plate (1) is provided with a boneless observation window (1b) for observing the implantation path, and the maxillary sinus mucosa is located within the boneless observation window (1b).

4. The bone-supported maxillary posterior long implant implant guide based on three-dimensional printing technology according to claim 3, characterized in that: The bone removal observation window (1b) is a long hole structure, and its length direction conforms to the path of implantation.

5. The bone-supported maxillary posterior long implant implantation guide based on three-dimensional printing technology according to claim 1, characterized in that: All the retaining holes (1a) of the maxillary bone seating fixation plate (1) are provided with boss molding structures, and the retaining holes (1a) penetrate the corresponding boss molding structures.

6. The bone-supported maxillary posterior long implant implantation guide based on three-dimensional printing technology according to any one of claims 1 to 5, characterized in that: The maxillary bone seating and fixing plate (1) matches the area to be fixed on the surface of the maxillary bone (6) in shape, and the maxillary bone seating and fixing plate (1) completely fits the area to be fixed on the surface of the maxillary bone (6).

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