Design method and system of integrated titanium plate assembly for auxiliary surface midfacial distraction osteogenesis external distractor

Abstract

The application discloses a design method of an integrated titanium plate assembly for assisting midfacial suture distraction external support traction, comprising the following steps: scanning a target object by a medical scanning device to obtain a three-dimensional model of the internal structure and tissue of the target object, wherein the three-dimensional model at least comprises independently displayable bone structure and dental tissue; performing bone analysis on the bone structure of the target object based on the three-dimensional model to obtain the weak point of the bone structure; obtaining the tooth root position of the dental tissue of the target object based on the three-dimensional model; selecting the shape and size of an integrated titanium plate assembly model based on the bone analysis result, and determining the fixed hole position of the integrated titanium plate assembly model based on the tooth root position; and generating an integrated titanium plate assembly three-dimensional model based on the shape, size and fixed hole position of the integrated titanium plate assembly model. According to the individual differences of patients, the integrated titanium plate assembly for assisting midfacial suture distraction external support traction is designed to be more suitable for patients, and the postoperative traction effect is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bone suture distraction, and particularly relates to a design method and system of an integrated titanium plate assembly for assisting midfacial bone suture distraction external support traction. BACKGROUND

[0002] Midfacial dysplasia is a common developmental deformity of the craniofacial region, and is most commonly seen in patients with congenital cleft lip and palate. Its main manifestations are skeletal class III malocclusion, accompanied by flattening or even depression of the paranasal, infraorbital, and zygomatic regions. It is a developmental failure in the three-dimensional direction of the midfacial skeleton, often accompanied by upper arch constriction, crowded and disordered dentition, tooth loss, and true or false mandibular overgrowth. Midfacial depression often occurs in young patients and progressively worsens with growth and development, affecting speech and masticatory function, and even causing psychological barriers, affecting the physical and mental health of the patient. This deformity lacks effective early treatment, and the main intervention measures in the past are orthodontic facebow traction and orthognathic surgery. However, the effect of orthodontic facebow traction is limited, and the traction device is difficult to fix in the mouth of patients in the deciduous or replacement tooth period, which can easily cause loss of anterior tooth anchorage, and about 25% of patients still need combined surgical treatment. It is generally believed that orthognathic surgery can only be performed after the patient reaches adulthood, completely missing the progress of the disease and allowing the deformity to develop. Bone suture distraction involves placing traction hooks in the patient's maxilla through surgery, and applying traction force to the entire midfacial skeleton through the strong anchorage of the external support of the skull, promoting bone suture growth and bone formation, and ultimately achieving treatment of midfacial dysplasia.

[0003] However, due to the large differences in midfacial deformities among patients, there is currently no scientific means of individualized customization, and almost complete reliance on the experience of doctors can lead to unsatisfactory postoperative results. SUMMARY

[0004] To solve the above problems, the purpose of the present application is to provide a design method and system of an integrated titanium plate assembly for assisting midfacial bone suture distraction external support traction, which can design an integrated titanium plate assembly for assisting midfacial bone suture distraction external support traction that is more suitable for each patient according to individual differences, and improve postoperative traction results.

[0005] The technical solution provided by the present application is as follows: a design method of an integrated titanium plate assembly for assisting midfacial bone suture distraction external support traction, comprising:

[0006] scanning a target object by a medical scanning device to obtain a three-dimensional model of the internal structure and tissue of the target object, the three-dimensional model at least including independently displayable bone structure and dental tissue;

[0007] performing bone analysis on the bone structure of the target object based on the three-dimensional model to obtain weak points of the bone structure;

[0008] acquiring a tooth root position of the target object based on the three-dimensional model;

[0009] determining a bone cutting position and selecting a shape and size of the integrated titanium plate assembly model based on the bone analysis result, and determining a fixing hole position of the integrated titanium plate assembly model based on the tooth root position;

[0010] generating a three-dimensional model of the integrated titanium plate assembly based on the shape and size of the integrated titanium plate assembly model and the fixing hole position.

[0011] Preferably, the method further comprises generating three-dimensional models of the first and second pre-fixation plates based on the bone analysis result, the shape and size of the integrated titanium plate assembly model and the fixing hole position:

[0012] determining the shape and position of the piriform aperture and zygomatic alveolar crest of the target object based on the bone analysis result to determine the shape and coordinates of both ends of the first and second pre-fixation plates, and determining the shape and size of the three-dimensional models of the first and second pre-fixation plates according to the shape and size of the integrated titanium plate assembly model;

[0013] forming pre-fixation hole positions on the first and second pre-fixation plates at corresponding positions based on the fixing hole position.

[0014] Preferably, the bone analysis of the skeletal structure of the target object based on the three-dimensional model further comprises:

[0015] reading the thickness of the skeletal structure of each pixel unit in the three-dimensional model, and marking the pixel unit if the thickness of the skeletal structure of the pixel unit is less than a first threshold value;

[0016] When the number of marked pixel units in a preset range reaches a second threshold value, marking the preset range as a weak point of the skeletal structure.

[0017] Preferably, determining the fixing hole position of the integrated titanium plate assembly model based on the tooth root position further comprises:

[0018] segmenting the upper and lower jaw bones and tooth roots according to the CT threshold value of the patient;

[0019] reading the tooth root position coordinates in the system, and determining a plurality of fixing holes on the first and second fixation plates of the integrated titanium plate assembly model, which are greater than a third threshold value from the tooth root coordinate position and avoid the weak point of the skeletal structure.

[0020] Preferably, generating a three-dimensional model of the integrated titanium plate assembly based on the shape and size of the integrated titanium plate assembly model and the fixing hole position further comprises:

[0021] based on the determined integrated titanium plate assembly model and the determined plurality of fixation holes, performing feature coordinate merging, and generating an integrated titanium plate assembly three-dimensional model based on all the merged feature coordinates;

[0022] after generating the integrated titanium plate assembly three-dimensional model, driving a 3D printing device to print the integrated titanium plate assembly.

[0023] Preferably, the method further comprises:

[0024] simulating fixing the integrated titanium plate assembly model to a predetermined position of the target object bone structure model in the system;

[0025] performing traction between the auxiliary midfacial suture distraction external support model and the integrated titanium plate assembly model, and simulating adjusting the auxiliary midfacial suture distraction external support model to achieve preoperative simulation.

[0026] Based on the same concept, the present application also improves an auxiliary midfacial suture distraction external support traction integrated titanium plate assembly design system, comprising:

[0027] a scanning module for scanning a target object by a medical scanning device to obtain a three-dimensional model of the internal structure and organization of the target object, the three-dimensional model at least including independently displayable bone structure and dental tissue;

[0028] an analysis module for performing bone analysis on the bone structure of the target object based on the three-dimensional model to obtain the weak points of the bone structure, and obtaining the tooth root position of the dental tissue of the target object based on the three-dimensional model;

[0029] a design module for selecting the shape and size of the integrated titanium plate assembly model based on the bone analysis result, and determining the fixation hole position of the integrated titanium plate assembly model based on the tooth root position;

[0030] a generation module for generating an integrated titanium plate assembly three-dimensional model based on the shape and size of the integrated titanium plate assembly model and the fixation hole position.

[0031] Preferably, it further comprises:

[0032] a pre-fixed plate generation module for determining the shape and position of the piriform aperture and zygomatic alveolar ridge of the target object based on the bone analysis result to determine the shape and coordinates of both ends of the first and second pre-fixed plates, and determining the three-dimensional model shape and size of the first and second pre-fixed plates according to the shape and size of the integrated titanium plate assembly model, and forming pre-fixed hole positions on the first and second pre-fixed plates at corresponding positions based on the fixation hole position.

[0033] Preferably, it further comprises:

[0034] The bone analysis module is configured to read the thickness of each pixel unit bone structure in the three-dimensional model, mark the pixel unit if the thickness of the pixel unit bone structure is less than a first threshold value, and mark a preset range as a weak point of the bone structure if the number of marked pixel units in the preset range reaches a second threshold value.

[0035] Preferably, the method further comprises:

[0036] The preoperative simulation module is configured to simulate fixing the integrated titanium plate assembly model to a predetermined position of the target object bone structure model in the system, and to simulate traction of the auxiliary interosseous distraction external support model and the integrated titanium plate assembly model, and to simulate adjustment of the auxiliary interosseous distraction external support model to achieve preoperative simulation.

[0037] The present application has the following advantages and positive effects compared with the prior art due to the use of the above technical solutions:

[0038] The present application can obtain the model of the bone structure and various tissues of the patient by scanning the head of the patient using a medical scanning device, and provides a data model for subsequent design of the integrated titanium plate assembly. The integrated titanium plate assembly designed based on the data model can better fit the bone surface, thereby improving the postoperative effect. Specifically, the weak points of the bone wall and the root positions of the teeth need to be avoided during design. Therefore, after obtaining the weak points of the bone wall and the root positions of the teeth by adjusting the software threshold value respectively, the weak points can be effectively avoided to prevent poor traction effect or damage to the roots after the operation. BRIEF DESCRIPTION OF DRAWINGS

[0039] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings, in which:

[0040] Figure 1 A schematic view of the integrated titanium plate installed at the target position designed by the method of the present application;

[0041] Figure 2 A schematic view of the first pre-fixing plate and the second pre-fixing plate positioned at the target position designed by the method of the present application;

[0042] Figure 3 A schematic view of the auxiliary interosseous distraction external support structure of the prior art.

[0043] REFERENCE SIGNS:

[0044] 1 - integrated titanium plate; 2 - pre-fixing plate; 3 - osteotomy position. DETAILED DESCRIPTION

[0045] The application will be described in further detail below with reference to the drawings and specific embodiments. The advantages and features of the application will become more apparent from the following description and claims. It should be noted that the drawings are in a very simplified form and are not drawn to precise scale. They are merely intended to facilitate the understanding of the embodiments of the application.

[0046] It should be noted that all directional indications, such as upper, lower, left, right, front, back, etc., used in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0047] First embodiment

[0048] The embodiment provides a design method of an integrated titanium plate assembly for assisting in traction of a facial bone suture distraction external support, and comprises the following steps:

[0049] A medical scanning device is used to scan a target object to obtain a three-dimensional model of internal structures and tissues of the target object, which at least includes bone structures and dental tissues that can be independently displayed;

[0050] Based on the three-dimensional model, bone analysis is performed on the bone structures of the target object to obtain weak points of the bone structures;

[0051] Based on the three-dimensional model, the positions of dental roots of the dental tissues of the target object are obtained;

[0052] The osteotomy position 3 is determined, and the shape and size of the integrated titanium plate assembly model are selected based on the bone analysis result; the positions of the fixing holes of the integrated titanium plate assembly model are determined based on the positions of the dental roots;

[0053] Based on the shape and size of the integrated titanium plate assembly model and the positions of the fixing holes, a three-dimensional model of the integrated titanium plate assembly is generated.

[0054] The technical solution of the embodiment can obtain the model of the bone structures and various tissues of the patient by scanning the head of the patient through the medical scanning device, provide a data model for subsequent design of the integrated titanium plate assembly, and design the integrated titanium plate assembly based on the data model, so that the integrated titanium plate assembly can be more fitted to the bone surface, thereby improving the postoperative effect. Specifically, the weak points of the bone walls and the positions of the dental roots of the patient are analyzed by adjusting the software threshold value respectively during the design, so that the weak points of the bone walls and the positions of the dental roots can be effectively avoided, and the postoperative traction effect is prevented from being poor or the dental roots are prevented from being damaged. See Figure 1 A schematic view of the integrated titanium plate 1 designed by the method and installed at a target position is shown in FIG. 1. The osteotomy position 3 is the position of the intersection of the yellow and white bones, and the yellow bone block outside the osteotomy position 3 is the bone block to be distracted by the integrated titanium plate 1. Figure 1 The intersection of the yellow and white bones is the osteotomy position 3, and the yellow bone block outside the osteotomy position 3 is the bone block to be distracted by the integrated titanium plate 1.

[0055] Preferably, the method further comprises generating a three-dimensional model of the first and second pre-fixing plates based on the bone analysis result, shape and size of the integrated titanium plate assembly model and the position of the fixing holes.

[0056] The shape and position of the piriform aperture and zygomatic alveolar ridge of the target object are determined based on the bone analysis result to determine the shape and coordinates of the two ends of the first and second pre-fixing plates, and the shape and size of the three-dimensional model of the first and second pre-fixing plates are determined according to the shape and size of the integrated titanium plate assembly model.

[0057] Based on the position of the fixing holes, pre-fixing hole positions are formed on the corresponding positions of the first and second pre-fixing plates.

[0058] Referring to Figure 2 The technical scheme of the embodiment further generates a three-dimensional model of the first and second pre-fixing plates to obtain the first and second pre-fixing plates, so that the first and second pre-fixing plates are used to fix the patient's bone before the integrated titanium plate assembly is fixed on the patient's bone, and the two ends are respectively fitted into the piriform aperture and the zygomatic alveolar ridge. The pre-fixing is performed on the patient's bone through the positioning through hole, and then the first and second pre-fixing plates are retrieved. The integrated titanium plate assembly is placed according to the pre-fixed position, and is fixed to the bone through the plurality of fixing holes, thereby preventing the problem of position deviation caused by directly fixing the integrated titanium plate assembly. Moreover, the first and second pre-fixing plates are designed based on the three-dimensional model of the patient's bone structure and dental tissue, thereby improving the matching precision of the pre-fixing plates and the integrated titanium plate assembly, and being beneficial to the overall surgical traction precision and effect.

[0059] Preferably, the bone analysis of the bone structure of the target object based on the three-dimensional model further comprises:

[0060] The thickness of the bone structure of each pixel unit in the three-dimensional model is read, and if the thickness of the pixel unit bone structure is less than a first threshold value, the pixel unit is marked;

[0061] When the number of marked pixel units in a preset range reaches a second threshold value, the preset range is marked as a weak point of the bone structure.

[0062] According to the patient's bone structure model obtained by scanning, the bone thickness of each pixel unit can be obtained, and if the thickness is less than a first threshold value, the pixel unit is marked. The first threshold value can be determined according to the actual situation of the patient, because different patients have different ages, types of deformities, degrees of deformities, etc. The threshold value may have large differences. When the number of marked pixel units in a certain range reaches a second threshold value, it is determined as a weak point of the bone structure.

[0063] Preferably, determining the position of the fixing hole of the integrated titanium plate assembly model based on the position of the dental root further comprises:

[0064] Segmenting the upper and lower jaw bones and the dental roots according to the CT threshold of the patient;

[0065] Reading the position of the dental root in the system, and determining a plurality of fixing holes on the first fixing plate and the second fixing plate of the integrated titanium plate assembly model, which are away from the position of the dental root coordinate and the weak points of the bone structure by more than a third threshold.

[0066] The technical scheme of the embodiment aims to effectively avoid the position of the dental root during design, prevent damage to the dental root of the patient, and avoid other adverse effects on the patient.

[0067] Preferably, generating the three-dimensional model of the integrated titanium plate assembly based on the shape and size of the integrated titanium plate assembly model and the position of the fixing hole further comprises:

[0068] Merging the feature coordinates based on the determined integrated titanium plate assembly model and the determined plurality of fixing holes, and generating the three-dimensional model of the integrated titanium plate assembly based on all the merged feature coordinates;

[0069] After generating the three-dimensional model of the integrated titanium plate assembly, driving the 3D printing device to print the integrated titanium plate assembly.

[0070] The technical scheme of the embodiment determines the coordinates of the fixing hole by considering the weak points of the bone wall and the damage to the dental root, and then fuses the shape and size of the integrated titanium plate assembly model and the position of the fixing hole to obtain the three-dimensional model of the integrated titanium plate assembly, which is then imported into the 3D printing device for printing, and finally the integrated titanium plate assembly is obtained.

[0071] Preferably, the method further comprises:

[0072] Simulating the fixation of the integrated titanium plate assembly model to the predetermined position of the target object bone structure model in the system;

[0073] Implementing traction between the bone suture distraction external support model in the auxiliary surface and the integrated titanium plate assembly model, and simulating the adjustment of the bone suture distraction external support model in the auxiliary surface to achieve preoperative simulation.

[0074] The technical scheme of the embodiment connects the bone suture distraction external support model in the auxiliary surface and the integrated titanium plate assembly model in the system to simulate traction, simulates the movement of the jaw bone, and determines the final position of the jaw bone after the operation, thereby effectively achieving preoperative simulation and providing guidance or distraction effect prediction for the operator.

[0075] Based on the same concept, the application also provides an integrated titanium plate assembly design system for bone suture distraction external support traction, which comprises:

[0076] a scanning module, configured to scan a target object by a medical scanning device to obtain a three-dimensional model of internal structure and tissue of the target object, the three-dimensional model comprising at least a bone structure and a dental tissue which can be displayed independently;

[0077] an analyzing module, configured to perform a bone analysis on the bone structure of the target object based on the three-dimensional model to obtain a weak point of the bone structure, and to obtain a tooth root position of the dental tissue of the target object based on the three-dimensional model;

[0078] a designing module, configured to select a shape and a size of an integrated titanium plate assembly model based on the bone analysis result, and to determine a fixing hole position of the integrated titanium plate assembly model based on the tooth root position;

[0079] a generating module, configured to generate a three-dimensional model of the integrated titanium plate assembly based on the shape and the size of the integrated titanium plate assembly model and the fixing hole position.

[0080] The technical scheme of the embodiment can obtain a model of the bone structure and various tissues of the patient by scanning the head of the patient by the medical scanning device, provide a data model for subsequent design of the integrated titanium plate assembly, and design the integrated titanium plate assembly based on the data model, so that the integrated titanium plate assembly can be more fitted to the bone surface, thereby improving the postoperative effect. Specifically, the weak point of the bone wall and the tooth root position of the patient are analyzed by adjusting the software threshold value respectively, and then the weak point of the bone wall and the tooth root position are effectively avoided, so as to prevent poor traction effect or damage to the tooth root after the operation.

[0081] Preferably, the technical scheme further comprises:

[0082] a pre-fixed plate generating module, configured to determine shapes and positions of a piriform aperture and a zygomatic alveolar crest of the target object based on the bone analysis result to determine shapes and coordinates of two ends of the first pre-fixed plate and the second pre-fixed plate, to determine shapes and sizes of three-dimensional models of the first pre-fixed plate and the second pre-fixed plate based on the shape and the size of the integrated titanium plate assembly model, and to form pre-fixed hole positions on corresponding positions of the first pre-fixed plate and the second pre-fixed plate based on the fixing hole position.

[0083] Preferably, the technical scheme further comprises:

[0084] a bone analysis module, configured to read thicknesses of bone structures of each pixel unit in the three-dimensional model, to mark the pixel unit if the thickness of the bone structure of the pixel unit is less than a first threshold value, and to mark a preset range as a weak point of the bone structure if a number of the pixel units marked in the preset range reaches a second threshold value.

[0085] Preferably, the technical scheme further comprises:

[0086] A preoperative simulation module is configured to simulate fixing the integrated titanium plate assembly model to a predetermined position of a target object bone structure model in the system, and to simulate adjusting the auxiliary midfacial suture distraction external support model to achieve a preoperative simulation.

[0087] Based on the same concept, the present application further provides an electronic device, comprising: a memory configured to store a processing program; and a processor configured to implement the integrated titanium plate assembly design method of the auxiliary midfacial suture distraction external support distraction when executing the processing program.

[0088] Based on the same concept, the present application further provides a readable storage medium having a processing program stored thereon, the processing program being configured to implement the integrated titanium plate assembly design method of the auxiliary midfacial suture distraction external support distraction when executed by a processor.

[0089] If the integrated titanium plate assembly design method of the auxiliary midfacial suture distraction external support distraction is implemented in the form of program instructions and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments can be embodied in the form of software, and the computer software is stored in a storage medium, including a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in various embodiments of the present disclosure. The aforementioned storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program code storage media.

[0090] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific implementation of the system and device described above can refer to the corresponding process in the foregoing method embodiments.

[0091] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above-described embodiments. Even if various changes are made to the present application, as long as the changes fall within the scope of the claims of the present application and equivalent technologies, they still fall within the protection scope of the present application.

Claims

1. A method for designing an integrated titanium plate assembly for assisting mid-surface suture distraction external stent traction, characterized in that: include: Scanning the target object with a medical scanning device to obtain a three-dimensional model of the target object's internal structure and tissue, wherein the three-dimensional model includes at least a skeletal structure and dental tissue that can be independently displayed; Performing a bone analysis on the target object's bone structure based on the three-dimensional model to obtain weak points of the bone structure; Performing a bone analysis on the target object's bone structure based on the three-dimensional model further includes: reading the thickness of the bone structure of each pixel unit in the three-dimensional model, marking the pixel unit if the thickness of the bone structure of the pixel unit is less than a first threshold; marking the preset range as a weak point of the bone structure when the number of marked pixel units within a preset range reaches a second threshold; Acquiring a tooth root position of a target object's tooth tissue based on the three-dimensional model; Determine the osteotomy position and select the shape and size of the integrated titanium plate assembly model based on the bone analysis results, and determine the position of the fixing hole of the integrated titanium plate assembly model based on the root position; Generate a three-dimensional model of the first pre-fixation plate and the second pre-fixation plate based on the bone analysis results, the shape and size of the integrated titanium plate assembly model, and the position of the fixing holes: determine the shape and position of the piriform foramen and the zygomatic alveolar ridge of the target object based on the bone analysis results to determine the shape and coordinates of the two ends of the first pre-fixation plate and the second pre-fixation plate, and determine the shape and size of the three-dimensional model of the first pre-fixation plate and the second pre-fixation plate according to the shape and size of the integrated titanium plate assembly model; form pre-fixation hole positions at corresponding positions on the first pre-fixation plate and the second pre-fixation plate based on the fixing hole positions; A three-dimensional model of the integrated titanium plate assembly is generated based on the shape, size and fixing hole positions of the integrated titanium plate assembly model.

2. The integrated titanium plate assembly design method for auxiliary surface mid-suture distraction external stent traction according to claim 1 is characterized in that: Determining the fixing hole position of the integrated titanium plate assembly model based on the tooth root position further includes: Segment the maxillary and mandibular bones and tooth roots according to the patient's CT threshold; The tooth root position coordinates in the system are read, and a plurality of fixation holes are determined on the first and second fixation plates of the integrated titanium plate assembly model, the plurality of fixation holes being greater than a third threshold value away from the tooth root coordinate positions and avoiding weak points of the bone structure.

3. The integrated titanium plate assembly design method for auxiliary surface mid-suture distraction external stent traction according to claim 1 is characterized in that: Generating a three-dimensional model of the integrated titanium plate assembly based on the shape and size of the integrated titanium plate assembly model and the position of the fixing holes further includes: Merging feature coordinates based on the determined integrated titanium plate assembly model and the determined plurality of fixing holes, and generating a three-dimensional model of the integrated titanium plate assembly based on all the merged feature coordinates; After generating a three-dimensional model of the integrated titanium plate assembly, a 3D printing device is driven to print the integrated titanium plate assembly.

4. The integrated titanium plate assembly design method for auxiliary surface mid-suture distraction external stent traction according to claim 1 is characterized in that: The method further comprises: simulating in the system the fixing of the integrated titanium plate assembly model to a predetermined position of the target subject's skeletal structure model; The auxiliary surface mid-suture distraction external bracket model and the integrated titanium plate assembly model are distracted, and the auxiliary surface mid-suture distraction external bracket model is simulated and adjusted to achieve preoperative simulation.

5. An integrated titanium plate assembly design system for assisting mid-surface suture distraction external stent traction, characterized in that: include: A scanning module, configured to scan a target object using a medical scanning device to obtain a three-dimensional model of the target object's internal structure and tissue, wherein the three-dimensional model includes at least independently displayable bone structure and dental tissue; an analysis module, configured to perform a bone analysis on the skeletal structure of the target object based on the three-dimensional model to obtain weak points of the skeletal structure; and obtaining the root position of the target object's tooth tissue based on the three-dimensional model; the analysis module further includes a bone analysis module for reading the thickness of the bone structure of each pixel unit in the three-dimensional model, marking the pixel unit if the thickness of the bone structure of the pixel unit is less than a first threshold; and marking the preset range as a weak point of the bone structure when the number of marked pixel units within the preset range reaches a second threshold; a design module for selecting a shape and size of the integrated titanium plate assembly model based on the bone analysis results, and determining a position of a fixing hole of the integrated titanium plate assembly model based on the tooth root position; a pre-fixation plate generation module, configured to determine the shape and position of the piriform foramen and zygomatic alveolar ridge of the target object based on the bone analysis results to determine the shape and coordinates of both ends of the first pre-fixation plate and the second pre-fixation plate, and determine the shape and size of the three-dimensional models of the first pre-fixation plate and the second pre-fixation plate according to the shape and size of the integrated titanium plate assembly model; and form pre-fixation hole positions at corresponding positions on the first pre-fixation plate and the second pre-fixation plate based on the positions of the fixation holes; The generation module is used to generate a three-dimensional model of the integrated titanium plate component based on the shape and size of the integrated titanium plate component model and the position of the fixing holes.

6. The integrated titanium plate assembly design system for auxiliary mid-surface suture distraction external stent traction according to claim 5 is characterized in that: Also includes: a preoperative simulation module, for simulating, in the system, fixing the integrated titanium plate assembly model to a predetermined position of a target subject's bone structure model; The auxiliary surface mid-suture distraction external bracket model and the integrated titanium plate component model are pulled, and the auxiliary surface mid-suture distraction external bracket model is simulated and adjusted to achieve preoperative simulation.

Images