Maxillary bone total resection bone reconstruction surgery synchronous implantation navigation implantation structure

Abstract

The utility model relates to the technical field of oral and maxillofacial surgical medical instruments, and particularly discloses a maxillary bone total resection bone reconstruction operation synchronous implantation navigation implantation structure which comprises an implantation support, a navigation positioning hole, a navigation positioning hole, a navigation positioning hole, a navigation positioning hole and a navigation positioning hole. The guiding stent is matched with the implanting stent, and a tissue supporting space is formed between the guiding stent and the implanting stent; and the positioning target nail is matched with the navigation positioning hole and is used for providing a positioning base point. According to the scheme, the neck position of the positioning target nail is selected on three-dimensional modeling to serve as a mark point, the position relation during navigation is established through a space registration algorithm, planting site deviation caused by fibula implant fixing deviation is reduced, and drill point reaming and stent implantation are guided in real time under high precision in the maxilla total resection bone reconstruction operation; the 3D printed PEEK material implantation stent is adopted to replace the cut maxillary bone and part of the cheekbone, and the guide stent is used for providing support for fixation of the fibula implant, so that not only is the stability of the reconstruction structure ensured, but also the surgical operation and the postoperative recovery strategy are optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of oral and maxillofacial surgical medical instruments, and more specifically to a navigation implant structure for simultaneous implantation during maxillary total resection and bone reconstruction surgery. Background Art

[0002] Currently, digital surgical technology is developing rapidly and is widely used in surgical clinics. Among these technologies, surgical navigation and guides are capable of accurately translating preoperative designs into intraoperative procedures. Surgical navigation requires the use of large, expensive navigation devices to register preoperative or intraoperative CT and MRI data with the patient's physical body during surgery. This is not only complex but also prone to navigation failure. Surgical guide technology, however, has been widely used in orthopedics, plastic surgery, and maxillofacial surgery. The data used is mostly derived from CT or 3D scans, placing high demands on equipment and the complex process of designing the guides.

[0003] Clinically, maxillary reconstruction surgery is required for maxillary defects due to trauma or surgical removal of maxillary tumors. Accurately restoring the integrity of the maxilla and beautiful facial appearance, and reconstructing good chewing, speech, swallowing and other functions are the primary goals of maxillary defect treatment. The existing technology provides positioning guide plates for large-scale maxillary defects, and can provide precise positioning for reconstruction surgery of unilateral or bilateral maxillary defects. However, for cases where the tumor involves a large area and leads to complete resection of the bilateral maxilla or even partial zygomatic bone, the surgical difficulties include but are not limited to, the maxillary teeth can no longer be used as positioning references when navigating the dental implant placement after complete resection of the maxillary reconstruction, and the fixing point of the implant changes, and partial defects in the zygomatic arch or periorbital bone also need to be reconstructed. The above factors greatly increase the difficulty of the operation, and the existing technology fails to provide corresponding references. Therefore, it is necessary to design and manufacture a navigation implant structure for simultaneous maxillary bone reconstruction surgery after bilateral maxillary total resection, which can be used to guide the reconstruction surgery of the entire maxilla and other facial bones and subsequent dental implant surgery. Utility Model Content

[0004] The utility model aims to overcome at least one of the deficiencies of the above-mentioned prior art and provides a navigation implant structure for simultaneous implantation during maxillary total resection and bone reconstruction surgery, which is used to achieve accurate navigation positioning of the implanted stent during maxillary total resection and bone reconstruction surgery.

[0005] The technical solution adopted by the utility model is to provide a navigation implant structure for simultaneous implantation during maxillary total resection and bone reconstruction surgery, comprising:

[0006] An implant stent is provided with a navigation positioning hole;

[0007] The guide stent cooperates with the implant stent to form a tissue support space between the two;

[0008] The positioning target nail cooperates with the navigation positioning hole to position the implanted stent and provide a positioning base point for the guide stent.

[0009] The application scenario of this solution is the reconstruction of bilateral maxilla after resection. When the maxillary tumor involves a large area, not only the entire maxilla is removed, but also part of the zygomatic bone is often removed, such as part of the zygomatic bone, zygomatic arch or periorbital area. Therefore, this solution uses an implant bracket to replace the resected maxilla and part of the zygomatic bone. The guide bracket is located below the implant bracket and cooperates with the implant bracket to form a tissue support space between the two to accommodate the fibula implant and soft tissue. The fibula implant is used to replace the resected maxilla and part of the zygomatic bone. The implantation of the above components requires precise navigation, and the positioning target pin cooperates with the navigation positioning hole opened on the implant bracket to achieve precise positioning of the implant bracket and the guide bracket. In one embodiment of the present invention, after the implant position is placed, the neck position of the positioning target pin is selected as a marking point in the three-dimensional modeling, and the positional relationship between the reconstructed maxilla and the patient's other maxillofacial bones during navigation is established through a spatial registration algorithm, thereby achieving an effect of combining virtual and real and real-time synchronization, reducing the implant site deviation caused by the fixation deviation of the fibula implant, and ensuring real-time guidance of the drill needle expansion and bracket implantation with high precision.

[0010] Furthermore, the implant navigation implant structure during the maxillary total resection bone reconstruction surgery is used to guide the implantation of abutment implants during oral surgery, and also includes an abutment implant. The guide bracket is provided with a plurality of implant holes on the outside of its tissue support space, and the abutment implant passes through the implant holes into the tissue support space. During the maxillary reconstruction surgery, fixing pins are driven into the implant holes to strengthen the fixing effect of the guide bracket on the fibula implant in the tissue support space. After the reconstruction is completed, the subsequent surgery will remove the guide bracket, pull out the fixing pins, and implant a scanning rod into the implant hole to facilitate extraoral scanning to check the reconstruction effect.

[0011] Furthermore, the implant bracket includes a left bracket and a right bracket, each extending from the nasal bone to the zygomatic bones. The navigation holes are provided in the areas where the left and right brackets meet the zygomatic bones. A pair of navigation holes are provided on each bracket, including an upper hole and a lower hole arranged longitudinally. A pair of positioning pins are provided on each bracket, corresponding to the upper and lower holes, respectively. The paired navigation holes facilitate positioning on each side.

[0012] Furthermore, the left and right brackets are symmetrical in structure, including a laterally distributed orbital fitting part and a zygomatic arch fitting part, and a longitudinally distributed nasal bone fitting part and a zygomatic-maxillary suture fitting part. The upper side of the zygomatic-maxillary suture fitting part extends to the orbital fitting part, and the two are connected to the nasal bone fitting part on one side and the zygomatic-maxillary suture fitting part on the other side. The navigation positioning hole is provided on the zygomatic-arch fitting part, and an upper end fixing hole is provided at the connection between the orbital fitting part and the nasal bone fitting part. A support pad is provided downwardly at the connection of the nasal bone fitting part, and a tissue fixing hole is provided on the zygomatic-maxillary suture fitting part to penetrate the tissue support space. The above design maximizes the use of the remaining maxillofacial bones after resection through each fitting part, so that it supports the various corners of the implant bracket; and the fixation between the implant bracket and the maxillofacial bones is enhanced by the upper end fixing hole and the navigation positioning holes on both sides, and the fixation between the implant bracket and the inner soft tissue is enhanced by the tissue fixing hole located in the middle of the bracket.

[0013] Furthermore, a longitudinal strip hole is formed at the junction of the orbital and zygomaticomandibular suture attachments. This strip hole serves to replace the infraorbital foramen of the maxillary bone, facilitating the passage of the infraorbital nerve and blood vessels. If arteriovenous anastomosis is required after stent implantation, the longitudinal strip hole, with a defined width, facilitates surgical procedures.

[0014] Furthermore, the implantable stent is a 3D-printed, one-piece structure. It is made of polyetheretherketone (PEEK) material via 3D printing. PEEK is a biocompatible material with excellent lightness, corrosion resistance, autoclavability, and surface finish, making it suitable for bone augmentation in locations where artificial or autologous bone is difficult to achieve.

[0015] Furthermore, the guide bracket is distributed along the lower side of the implant bracket, and a tissue support cavity is provided on one side facing the implant bracket. The implant hole connects the tissue support cavity from bottom to top. The inner side of the guide bracket is curved, tightly fitting the surface of the fibula implant, facilitating support and fixation of the fibula implant.

[0016] Furthermore, the guide bracket includes a horizontally disposed central portion, two wings extending at an angle to either side of the central portion, and a positioning plate bent laterally from the ends of the wings, each plate having lateral positioning holes. The wings are angled relative to the central portion to closely align with the fibula implant, which is curved to mimic the natural curvature of the alveolar process of the lower maxilla, facilitating implant placement and masticatory restoration. The lateral positioning holes on the positioning plate are positioned to closely contact the lower zygomatic bone, facilitating securement.

[0017] Furthermore, the guide bracket is provided with a reinforcing rib on a side away from the implant bracket, and both ends of the reinforcing rib are fixed to the middle portion and / or the wing portion. The reinforcing rib is provided to prevent the guide bracket from bending downward and losing the fixing effect on the fibula implant.

[0018] Furthermore, the implant navigation implant structure for the total maxillary resection and reconstruction surgery also includes multiple optical recognition targets that are detachably connected to the abutment implants. The optical recognition targets are either intraoral scanning rods or extraoral scanning rods. The intraoral scanning rod is used to record the relationship between the abutment implant position and the mucosa and occlusion, while the extraoral scanning rod is used to record the relative position relationship between the abutment implants. This facilitates the production of a temporary restoration for the patient after surgery, ultimately achieving the goal of restoring the patient's chewing function.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] (1) The present invention provides a navigation implant structure for simultaneous implantation during maxillary total resection and bone reconstruction surgery. Through the precisely designed implant bracket, guide bracket and positioning target pin, the neck position of the positioning target pin is selected as the marking point in the three-dimensional modeling, and the positional relationship between the reconstructed maxilla and the patient's other maxillofacial bones during navigation is established through the spatial registration algorithm, achieving the effect of combining virtual and real and real and real-time synchronization, reducing the implant site deviation caused by the fixation deviation of the fibula implant, and realizing the real-time guidance of the drill needle expansion and bracket implantation under high precision during maxillary total resection and bone reconstruction surgery.

[0021] (2) A 3D-printed PEEK material implant scaffold was used to replace the resected maxilla and part of the zygomatic bone, and a guide scaffold was used to provide support for the fixation of the fibula implant, which not only ensured the stability of the reconstructed structure but also optimized the surgical operation and postoperative recovery strategy.

[0022] (3) This solution uses an optical recognition target connected to the abutment implant to perform extraoral and intraoral scanning, further improving the accuracy of postoperative monitoring and functional reconstruction, and providing an efficient and accurate solution for complex maxillary reconstruction surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of the maxillary total resection bone reconstruction surgery and the implant navigation implant structure after the reconstruction in Example 1.

[0024] Figure 2 A structural diagram of the installation of an optical recognition target during extraoral scanning in Example 2 for a navigation implant structure for simultaneous implantation of a maxillary total resection and bone reconstruction surgery.

[0025] Explanation of the numbers: implant bracket 100, zygomatic arch fitting part 110, navigation positioning hole 111, orbital fitting part 120, nasal bone fitting part 130, upper end fixing hole 131, zygomaticomandibular suture fitting part 140, support pad 141, strip hole 150, tissue fixation hole 160, guide bracket 200, middle part 210, wing part 220, positioning plate 230, lateral positioning hole 231, implantation hole 240, reinforcement rib 250, fibula implant 300, abutment implant 400, optical recognition target 500. DETAILED DESCRIPTION

[0026] The drawings in this utility model are for illustrative purposes only and are not to be construed as limiting the scope of this utility model. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the products. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0027] Example 1

[0028] like Figure 1 As shown, this embodiment provides a navigation implant structure for simultaneous implantation during maxillary total resection and bone reconstruction surgery, comprising:

[0029] An implant stent 100 is provided with a navigation positioning hole 111;

[0030] The guide stent 200 cooperates with the implant stent 100 to form a tissue support space between the two;

[0031] The positioning target nail (not shown in the figure) cooperates with the navigation positioning hole 111 to position the implant stent 100 and provide a positioning base point for the guide stent 200.

[0032] The application scenario of this embodiment is the reconstruction of bilateral maxilla after resection. When the maxillary tumor involves a large area, not only the entire maxilla is removed, but also part of the zygomatic bone is often removed, such as part of the zygomatic bone, zygomatic arch or periorbital bone. Therefore, this embodiment uses an implant bracket 100 to replace the resected maxilla and part of the zygomatic bone. The guide bracket 200 is located below the implant bracket 100 and cooperates with the implant bracket 100 to form a tissue support space therebetween for accommodating the fibula implant 300 and soft tissue. The fibula implant 300 is used to replace the resected maxilla and part of the zygomatic bone. The implantation of the above components requires precise navigation, and the positioning target nail cooperates with the navigation positioning hole 111 opened on the implant bracket 100 to achieve precise positioning of the implant bracket 100 and the guide bracket 200. Specifically in this embodiment, after the implant position is placed, the neck position of the positioning target pin is selected as the marking point in the three-dimensional modeling, and the positional relationship between the reconstructed maxilla and the patient's other maxillofacial bones during navigation is established through the spatial registration algorithm, so as to achieve the effect of combining virtual and real and real-time synchronization, reduce the implant site deviation caused by the fixation deviation of the fibula implant 300, and ensure real-time guidance of drill needle expansion and bracket implantation under high precision.

[0033] The guide bracket 200 is provided with a plurality of implant holes 240 outside its tissue support space. During maxillary reconstruction surgery, fixation pins are driven into these implant holes 240 to strengthen the guide bracket 200's fixation of the fibula implant 300 within the tissue support space. After the reconstruction is completed, a subsequent surgery will remove the guide bracket 200, remove the fixation pins, and implant the abutment implant 400 into the implant holes 240 to facilitate intraoral and extraoral scanning to check the reconstruction results.

[0034] The implant bracket 100 includes a left bracket and a right bracket, each extending from the nasal bone to the cheekbones. Navigation holes 111 are provided in the areas where the left and right brackets meet the cheekbones. A pair of navigation holes 111 are provided on each bracket, including an upper hole and a lower hole arranged longitudinally. A pair of positioning pins are provided on each bracket, corresponding to the upper and lower holes, respectively. The paired navigation holes 111 facilitate positioning on each side.

[0035] The left and right brackets are symmetrical in structure, including a horizontally distributed orbital fitting portion 120, a zygomatic arch fitting portion 110, and a longitudinally distributed nasal bone fitting portion 130 and a zygomatic-maxillary suture fitting portion 140. The upper side of the zygomatic-maxillary suture fitting portion 140 extends to the orbital fitting portion 120, and one side of the two is connected to the nasal bone fitting portion 130 and the other side is connected to the zygomatic arch fitting portion 110. The navigation positioning hole 111 is set on the zygomatic arch fitting portion 110. The connection between the orbital fitting portion 120 and the nasal bone fitting portion 130 extends upward and is provided with an upper end fixing hole 131. The connection between the nasal bone fitting portion 130 extends downward and is provided with a support pad 141. The zygomatic-maxillary suture fitting portion 140 is provided with a tissue fixing hole 160 that penetrates into the tissue support space. The above design maximizes the use of the remaining maxillofacial bones after resection through various fitting parts, so that they support the various corners of the implant bracket 100; and strengthens the fixation between the implant bracket 100 and the maxillofacial bones through the upper end fixing hole 131 and the navigation positioning holes 111 on both sides, and strengthens the fixation between the implant bracket 100 and the inner soft tissue through the tissue fixation hole 160 located in the middle of the bracket.

[0036] A longitudinal strip-shaped hole 150 is formed at the junction of the orbital-fitting portion 120 and the zygomatic-mandibular suture-fitting portion 140. This strip-shaped hole 150 serves to replace the infraorbital foramen of the maxillary bone, facilitating the passage of the infraorbital nerve and blood vessels. If arteriovenous anastomosis is required after stent 100 implantation, the longitudinal, wide strip-shaped hole 150 facilitates surgical procedures.

[0037] The implant stent 100 is a 3D-printed, one-piece structure. It is made of polyetheretherketone (PEEK) material via 3D printing. PEEK is biocompatible, lightweight, corrosion-resistant, autoclavable, and has a good surface finish, making it suitable for bone augmentation in locations where artificial or autologous bone is difficult to achieve.

[0038] The guide bracket 200 is arranged along the underside of the implant bracket 100, and a tissue support cavity is provided on the side facing the implant bracket 100. The implant hole 240 connects the tissue support cavity from bottom to top. The inner side of the guide bracket 200 is curved, tightly fitting the surface of the fibula implant 300, facilitating support and fixation of the fibula implant 300.

[0039] The guide bracket 200 comprises a horizontally disposed central portion 210, two wings 220 extending at an angle to either side of the central portion 210, and a positioning plate 230 bent laterally from the ends of the wings 220. The positioning plate 230 is provided with lateral positioning holes 231. The wings 220 are angled relative to the central portion 210 to closely align with the fibula implant 300. The curvature of the fibula implant 300 mimics the natural curvature of the alveolar process of the lower maxilla, facilitating implant placement and masticatory restoration. The lateral positioning holes 231 on the positioning plate 230 are positioned to closely contact the lower zygomatic bone, facilitating securement.

[0040] The guide bracket 200 is provided with a reinforcing rib 250 on a side away from the implant bracket 100, and both ends of the reinforcing rib 250 are fixed to the middle portion 210 and / or the wing portion 220. The reinforcing rib 250 is provided to prevent the guide bracket 200 from bending downward and losing its fixing effect on the fibula implant 300.

[0041] Example 2

[0042] like Figure 2 As shown, the only difference between this embodiment and embodiment 1 is that after the guide bracket 200 is removed, the abutment implant 400 and the optical recognition target 500 are installed. The implant navigation implant structure for the maxillary total resection bone reconstruction surgery also includes an abutment implant 400 and an optical recognition target 500, and the optical recognition target 500 is detachably connected to the abutment implant 400. The optical recognition target is an intraoral scanning rod or an extraoral scanning rod. The intraoral scanning rod is used to record the relationship between the position of the abutment implant and the mucosa and occlusion, and the extraoral scanning rod is used to record the relative position relationship between the abutment implants, which is conducive to making a temporary restoration after surgery to provide the patient with temporary tooth restoration, and ultimately achieve the goal of reconstructing the patient's chewing function.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A navigation implant structure for simultaneous implantation during maxillary total resection and reconstruction surgery, characterized in that: include: An implant stent is provided with a navigation positioning hole; The guide stent cooperates with the implant stent to form a tissue support space between the two; The positioning target nail cooperates with the navigation positioning hole to position the implanted stent and provide a positioning base point for the guide stent.

2. The navigation implant structure for simultaneous implantation during maxillary total resection and reconstruction surgery according to claim 1, characterized in that: The navigation implant structure for simultaneous implantation during maxillary total resection and bone reconstruction surgery is used to guide the implantation of abutment implants during oral surgery, and also includes abutment implants. A plurality of implantation holes are provided on the guide bracket on the outside of its tissue support space, and the abutment implants pass through the implantation holes into the tissue support space.

3. The navigation implant structure for simultaneous implantation during maxillary total resection and reconstruction surgery according to claim 2, characterized in that: The implant bracket includes a left bracket and a right bracket, and the left bracket and the right bracket extend from both sides of the nasal bone to both sides of the zygomatic bones respectively. The navigation positioning hole is set in the area where the left bracket and the right bracket cooperate with the two sides of the zygomatic bones.

4. The navigation implant structure for simultaneous implantation during maxillary total resection and reconstruction surgery according to claim 3, characterized in that: The navigation positioning holes are provided in a pair on the left bracket and the right bracket, respectively, including an upper hole and a lower hole arranged longitudinally. The positioning target nails are provided in a pair on the left and right, respectively corresponding to the upper hole and the lower hole.

5. The navigation implant structure for simultaneous implantation during maxillary total resection and reconstruction surgery according to claim 3, characterized in that: The left bracket and the right bracket have a symmetrical structure, including a laterally distributed orbital fitting part and a zygomatic arch fitting part and a longitudinally distributed nasal bone fitting part and a zygomatic-mandibular suture fitting part. The upper side of the zygomatic-mandibular suture fitting part extends to the orbital fitting part, and one side of the two is connected to the nasal bone fitting part and the other side is connected to the zygomatic arch fitting part. The navigation positioning hole is provided on the zygomatic arch fitting part, and an upper end fixing hole is provided upwardly extending from the connection between the orbital fitting part and the nasal bone fitting part.

6. The navigation implant structure for simultaneous implantation during maxillary total resection and reconstruction surgery according to claim 5, characterized in that: A support pad is provided at the connection of the nasal bone fitting portion extending downward, and a tissue fixing hole is provided on the zygomatic-mandibular joint fitting portion, penetrating into the tissue supporting space.

7. The navigation implant structure for simultaneous implantation during maxillary total resection and reconstruction surgery according to claim 5, characterized in that: A strip hole is provided on the zygomatic-maxillary suture fitting portion, and the strip hole extends upward to the orbital fitting portion and passes through the orbital fitting portion.

8. The navigation implant structure for simultaneous implantation during maxillary total resection and bone reconstruction surgery according to any one of claims 2 to 7, characterized in that: The guide bracket is distributed along the lower side of the implant bracket, a tissue support cavity is provided on one side facing the implant bracket, and the implant hole is connected to the tissue support cavity from bottom to top.

9. The navigation implant structure for simultaneous implantation during maxillary total resection and reconstruction surgery according to claim 8, characterized in that: The guide bracket includes a horizontally distributed middle portion, two wings extending to both sides of the middle portion at a certain angle to the middle portion, and a positioning plate bent laterally from the ends of the wings, and a lateral positioning hole is provided on the positioning plate.

10. The navigation implant structure for simultaneous implantation during maxillary total resection and reconstruction surgery according to any one of claims 2 to 7, characterized in that: It also includes a plurality of optical identification targets, which are detachably connected to the base implant.

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