Skull prosthesis construction method, device, and storage medium

Abstract

The application discloses a skull prosthesis construction method and device and a storage medium. The method comprises the following steps: constructing a skull model to be repaired according to a skull medical image; constructing a first repair model according to the skull model to be repaired and a first thickness; constructing a second repair model according to a defect edge in the skull model to be repaired, a preset distance and a second thickness; and constructing a target prosthesis grid model according to the first repair model and the second repair model. Through the technical scheme of the embodiment of the application, the effect of constructing a stepped skull prosthesis is achieved, the fixing effect between the prosthesis and the skull is improved, and the risk of fixing the prosthesis and the skull is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical treatment, in particular to a skull repair body construction method and device and storage medium. BACKGROUND

[0002] Skull defects can aggravate brain injury, affect brain function rehabilitation, and affect appearance, so skull repair and reconstruction is needed. The commonly used repair and reconstruction method is to use titanium mesh to make a repair body, and the repair body and the skull are fixed together through a connecting piece or a screw hole on the titanium mesh.

[0003] Fixing through the connecting piece can cause the repair body to move due to the rotation of the connecting piece, and can also cause the repair body to move due to the fracture of the connecting piece caused by the difficulty of the connecting piece in bearing external impact, which is a great danger. Fixing through the screw hole is to use the reserved screw hole on the titanium mesh, but since the titanium mesh needs to be shaped and continuously trimmed before being used for skull fixation, the edge of the shaped titanium mesh is zigzag, and the zigzag edge has a screw hole, which has the risk of cutting the scalp. Moreover, the titanium mesh cannot conform to the curvature of the skull, and the fit with the wound is poor, which can also cause the repair body to loosen after the operation. SUMMARY

[0004] The present application provides a skull repair body construction method and device and storage medium to realize the effect of constructing a stepped skull repair body, improve the fixing effect between the repair body and the skull, and reduce the risk of fixing the repair body and the skull.

[0005] According to one aspect of the present application, a skull repair body construction method is provided, characterized in that it comprises:

[0006] constructing a skull to be repaired model according to a skull medical image;

[0007] constructing a first repair model according to the skull to be repaired model and a first thickness;

[0008] constructing a second repair model according to a defect edge in the skull to be repaired model, a preset distance, and a second thickness;

[0009] constructing a target repair body grid model according to the first repair model and the second repair model.

[0010] According to another aspect of the present application, a skull repair body construction device is provided, characterized in that it comprises:

[0011] a skull to be repaired model construction module for constructing a skull to be repaired model according to a skull medical image;

[0012] The first repair model construction module is used to construct a first repair model based on the skull model to be repaired and the first thickness.

[0013] The second repair model construction module is used to construct a second repair model based on the defect edges, preset distances, and second thicknesses in the skull model to be repaired.

[0014] The target repair mesh model construction module is used to construct a target repair mesh model based on the first repair model and the second repair model.

[0015] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0016] At least one processor; and

[0017] A memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the cranial prosthesis construction method according to any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the cranial prosthesis construction method according to any embodiment of the present invention.

[0020] The technical solution of this invention involves constructing a skull model to be repaired based on a skull medical image, constructing a first repair model based on the skull model and a first thickness, constructing a second repair model based on the defect edge, a preset distance, and a second thickness in the skull model, and constructing a target prosthesis mesh model based on the first and second repair models. This solves the problems of poor matching between the prosthesis and the skull and high fixation risk between the prosthesis and the skull, and achieves the construction of a step-shaped skull prosthesis, improving the matching between the prosthesis and the skull, thereby improving the fixation effect between the prosthesis and the skull and reducing the risk of fixing the prosthesis and the skull.

[0021] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic flowchart of a method for constructing a cranial prosthesis according to Embodiment 1 of the present invention;

[0024] Figure 2 This is a schematic flowchart of a method for constructing a cranial prosthesis according to Embodiment 2 of the present invention;

[0025] Figure 3 This is a schematic diagram of a skull model to be repaired and the defect area provided in Embodiment 2 of the present invention;

[0026] Figure 4 This is a schematic diagram of a first repair model provided in Embodiment 2 of the present invention;

[0027] Figure 5 This is a schematic diagram of a second repair model provided in Embodiment 2 of the present invention;

[0028] Figure 6 This is a schematic diagram of a mesh model to be processed provided in Embodiment 2 of the present invention;

[0029] Figure 7 This is a schematic diagram of a target repair body mesh model provided in Embodiment 2 of the present invention;

[0030] Figure 8 This is a schematic diagram of a target hole provided in Embodiment 2 of the present invention;

[0031] Figure 9 This is a schematic diagram of a target prosthesis mesh model being installed onto the skull, according to Embodiment 2 of the present invention.

[0032] Figure 10 This is a schematic diagram of a cranial prosthesis construction device provided in Embodiment 3 of the present invention;

[0033] Figure 11 This is a schematic diagram of the structure of an electronic device provided in Embodiment 4 of the present invention. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] It is understood that the data involved in this technical solution (including but not limited to the data itself, the acquisition or use of the data) shall comply with the requirements of relevant laws, regulations and related provisions.

[0037] Example 1

[0038] Figure 1 This is a flowchart illustrating a method for constructing a cranial prosthesis according to Embodiment 1 of the present invention. This embodiment is applicable to the situation of constructing an easily fixed cranial prosthesis for objects with cranial defects. The method can be executed by a cranial prosthesis construction device, which can be implemented in hardware and / or software and can be configured in an electronic device.

[0039] like Figure 1 As shown, the method includes:

[0040] S110. Construct a skull model to be repaired based on medical images of the skull.

[0041] The skull medical images can be obtained by scanning the skull using medical scanning equipment, or by extracting the skull portion after scanning a human body containing the skull using medical scanning equipment, or by obtaining the skull portion medical images from the medical data corresponding to the skull to be repaired. The skull model to be repaired can be a skull model with defects, or a three-dimensional model obtained by reconstructing the skull based on the skull medical images.

[0042] Specifically, by acquiring medical images of the skull and reconstructing the skull portion of these images, a three-dimensional skull model with skull defects can be obtained, i.e., a skull model to be repaired.

[0043] For example, the skull model to be repaired can be a three-dimensional skull model reconstructed from CT (Computed Tomography) data of the skull object to be repaired.

[0044] S120. Based on the skull model to be repaired and the first thickness, construct the first repair model.

[0045] The first thickness can be a pre-set thickness used to construct the first repair model; the specific value can be set according to actual needs. The first repair model can be a model obtained by patching the area to be repaired in the skull model.

[0046] Specifically, a patch model is created for the skull model to be repaired. The thickness of the part covering the area to be repaired in the skull model is adjusted to a first thickness. The resulting model is then used as the first repair model.

[0047] Optionally, to improve the fit between the first repair model and the defect area of ​​the skull model to be repaired, the curvature of the first repair model can be adjusted. Specifically, this can be done by:

[0048] Based on the curvature of the defect edge in the skull model to be repaired, the curvature of the first repair model is adjusted to obtain the adjusted first repair model.

[0049] Specifically, the edge of the area to be repaired in the skull model is taken as the defect edge. Analyzing the defect edge can determine its curvature. Then, based on the curvature of the defect edge, the curvature of the first repair model can be adjusted so that the curvature of the first repair model is consistent with the curvature of the defect edge, so as to effectively improve the fit between the prosthesis and the defect area during subsequent skull repair.

[0050] S130. Construct a second repair model based on the defect edges, preset distance, and second thickness in the skull model to be repaired.

[0051] The defect edge can be the edge of the area to be repaired in the skull model. The preset distance can be a pre-set reduction distance, and the specific distance can be set according to actual needs. The second thickness can be the thickness required to construct the second repair model. The second thickness can be the same as or different from the first thickness, and the specific value can be set according to actual needs. The second repair model can be a part used to combine with the first repair model to form a step-like structure.

[0052] Specifically, the defect edges in the skull model to be repaired are determined, the defect edges are reduced inward by a preset distance, and the model of the reduced part is constructed with a second thickness, which is the second repair model.

[0053] S140. Based on the first repair model and the second repair model, construct the target repair body mesh model.

[0054] The target prosthesis mesh model can be a meshed model used to repair skull defects.

[0055] Specifically, the first repair model and the second repair model are spliced ​​together, and then the spliced ​​model is meshed to obtain the target repair body mesh model.

[0056] Optionally, after constructing the target prosthesis mesh model, a prosthesis mesh entity can be generated based on the target prosthesis mesh model to perform cranial repair based on the prosthesis mesh entity.

[0057] The technical solution of this invention involves constructing a skull model to be repaired based on a skull medical image, constructing a first repair model based on the skull model and a first thickness, constructing a second repair model based on the defect edge, a preset distance, and a second thickness in the skull model, and constructing a target prosthesis mesh model based on the first and second repair models. This solves the problems of poor matching between the prosthesis and the skull and high fixation risk between the prosthesis and the skull, and achieves the construction of a step-shaped skull prosthesis, improving the matching between the prosthesis and the skull, thereby improving the fixation effect between the prosthesis and the skull and reducing the risk of fixing the prosthesis and the skull.

[0058] Example 2

[0059] Figure 2 This is a flowchart illustrating a method for constructing a cranial prosthesis according to Embodiment 2 of the present invention. Based on the above embodiments, the specific construction methods for the first repair model, the second repair model, and the target prosthesis mesh model can be found in the detailed description of this technical solution. Explanations of terms that are the same as or corresponding to those in the above embodiments will not be repeated here.

[0060] like Figure 2 As shown, the method includes:

[0061] S210. Construct a skull model to be repaired based on medical images of the skull.

[0062] S220. Based on the skull model to be repaired, determine the defect area in the skull model to be repaired and the corresponding control part model.

[0063] The defect area can be the region corresponding to the missing part in the skull model to be repaired. A schematic diagram of the skull model to be repaired and the defect area is shown below. Figure 3 As shown. Since the skull can be approximated as symmetrical, the control model can be a portion of the skull model to be repaired that is symmetrical to the defect area.

[0064] Specifically, after obtaining the skull model to be repaired, the part to be repaired in the model can be identified, and the area corresponding to this part is the defect area. Furthermore, based on the symmetry of the skull model to be repaired, the part of the model that is symmetrical to the defect area is identified as the control model.

[0065] S230. Based on the reference model and the first thickness, construct the first repair model.

[0066] Specifically, the control model can be adjusted to the first thickness, and then the model after thickness adjustment can be symmetrically transformed according to the symmetry of the skull model to be repaired to obtain the first repair model. Alternatively, the control model can be symmetrically transformed according to the symmetry of the skull model to be repaired, and the symmetrically transformed model can be adjusted to the first thickness to obtain the first repair model. A schematic diagram of the first repair model is shown below. Figure 4 As shown.

[0067] Constructing the first repair model in the above manner makes it easier for the edge curvature of the target repair mesh model to be consistent with the edge curvature of the defective area.

[0068] Optionally, the following steps can be used to determine the defect area in the skull model to be repaired and the corresponding control model based on the defect area:

[0069] Step 1: Based on the skull model to be repaired, determine the defect area and the plane of symmetry in the skull model to be repaired.

[0070] The plane of symmetry can be the center of symmetry of the left and right sides of the skull model to be repaired.

[0071] Specifically, after obtaining the skull model to be repaired, the part to be repaired in the skull model can be identified, and the corresponding area is the defect area. Then, structural analysis is performed on the skull model to determine the plane of symmetry so that the subsequently repaired skull is symmetrical from left to right.

[0072] Step 2: Using the plane of symmetry as the center of symmetry, determine the control area corresponding to the defective area, and determine the control part model based on the control area.

[0073] The control region can be the region obtained by symmetrically dividing the defective region according to the plane of symmetry. The control region is used to determine the control part model.

[0074] Specifically, the defective area is symmetrically processed according to the plane of symmetry, and the resulting area is used as the control area. Then, the part of the skull model to be repaired that overlaps with the symmetrical area is used as the control model.

[0075] Accordingly, the first repair model can be constructed based on the control model and the first thickness using the following steps:

[0076] Step 1: Symmetrically adjust the comparison model according to the plane of symmetry to obtain the model to be adjusted and repaired.

[0077] Among them, the model to be adjusted and repaired can be a model obtained by symmetrically altering the control model according to the plane of symmetry.

[0078] Step 2: Adjust the model to be repaired based on the first thickness to obtain the first repair model.

[0079] Specifically, since the comparison model and the model to be adjusted and repaired are symmetrical, their thicknesses are the same. Therefore, the thickness of the model to be adjusted and repaired is adjusted to the first thickness, and the model obtained by adjusting the thickness is used as the first repair model.

[0080] S240. Reduce the defect edge in the skull model to be repaired by a preset distance to obtain the reduced edge.

[0081] The narrowing edge can be obtained by moving the defective edge inward by a preset distance. The preset distance can be a pre-defined movement distance of the defective edge, and adjusting the preset distance can make the subsequent target repair mesh model present a stepped shape. It should be noted that the preset distance can be set according to actual needs, and is not specifically limited in this embodiment.

[0082] Specifically, the edge of the defective area can be considered as the defect edge, that is, the edge of the defective part. The defect edge is moved a preset distance into the area enclosed by the defect edge to obtain a reduced edge.

[0083] S250. Based on the reduced edge and the second thickness, construct the second repair model.

[0084] Specifically, the area enclosed by the reduced edge is constructed into a model according to the second thickness; this is the second repair model. A schematic diagram of the second repair model is shown below. Figure 5 As shown.

[0085] S260. Based on the first repair model and the second repair model, determine the model to be used.

[0086] The model to be used can be a stepped model composed of a first repair model and a second repair model.

[0087] Specifically, the first repair model and the second repair model are summed using Boolean summation according to their corresponding positional relationship to obtain the model to be used.

[0088] By combining the first repair model and the second repair model, the concave edge of the subsequently obtained target repair mesh model can be made consistent with the contour of the skull defect edge, thus achieving a foolproof effect.

[0089] Optionally, the model to be used can be determined based on the first repair model and the second repair model through the following steps:

[0090] Step 1: Determine the first positional relationship based on the first repair model and the defect edge, and determine the second positional relationship based on the second repair model and the defect edge.

[0091] The first positional relationship can be the positional relationship between the first repair model and the defect edge. The second positional relationship can be the positional relationship between the second repair model and the defect edge.

[0092] Specifically, the outer contour of the first repair model should be consistent with the edge of the defect. Placing the first repair model at the edge of the defect establishes the first positional relationship. The outer contour of the second repair model moves a preset distance relative to the edge of the defect. When the distance between the outer contour of the second repair model and the edge of the defect is the preset distance, the second positional relationship is determined.

[0093] Step 2: Determine the installation position relationship between the first repair model and the second repair model based on the first position relationship and the second position relationship.

[0094] The installation position relationship can be the positional relationship between the first repair model and the second repair model.

[0095] Specifically, using the defective edge as a reference, the planar positional relationship between the first and second repair models can be determined based on the first and second positional relationships. Furthermore, since the first repair model is positioned above and in contact with the second repair model, a stepped model can be constructed. Therefore, the three-dimensional positional relationship between the first and second repair models can be further confirmed. The installation positional relationship between the first and second repair models can be determined through the planar and three-dimensional positional relationships.

[0096] Step 3: Based on the installation location relationship, perform a Boolean summation operation on the first repair model and the second repair model to obtain the model to be used.

[0097] Specifically, the first and second repair models are placed according to their installation positions, and a Boolean summation operation is performed after placement to obtain the combined model, which is the model to be used.

[0098] S270. For the model to be used, perform meshing according to preset meshing parameters to obtain the mesh model to be processed.

[0099] The preset meshing parameters can be the parameters used during mesh generation, such as mesh structure and mesh size. The mesh model to be processed can be the model to be used after meshing.

[0100] Specifically, the model to be used is meshed according to preset partitioning parameters, transforming it into a mesh-like model, which is then used as the mesh model to be processed. A schematic diagram of the mesh model to be processed is shown below. Figure 6 As shown, the left side is a schematic diagram of the grid model to be processed as observed from the outside, and the right side is a schematic diagram of the grid model to be processed as observed from the inside.

[0101] S280. Based on the mesh model to be processed, generate a mesh data structure, and construct the target repair body mesh model according to the mesh data structure and the preset wire diameter.

[0102] The mesh data structure can be a data structure used to store the mesh model to be processed, such as a GraphList. The preset line diameter can be the diameter of the structure of the mesh portion when constructing the mesh model of the target repair body. For example, if the structure of the constructed mesh portion is a cylinder, then the preset line diameter is the diameter of the cylinder.

[0103] Specifically, based on the mesh model to be processed, a multi-layered three-dimensional mesh data structure is generated. Then, a preset wire diameter is assigned to the mesh data structure, converting it into the target restoration mesh model. A schematic diagram of the target restoration mesh model is shown below. Figure 7 As shown, the left side is a schematic diagram of the target restoration mesh model observed from the outside, and the right side is a schematic diagram of the target restoration mesh model observed from the inside.

[0104] For example, the command Create Volume Graph is used to generate a multi-layered three-dimensional mesh data structure based on the mesh model to be processed, and the mesh data structure is assigned a preset wire diameter to be converted into a mesh model of the target restoration body.

[0105] Optionally, after constructing the target restoration mesh model, a porous structure can be added to the target restoration mesh model to improve its usability. Specifically, this can be done by:

[0106] Add target holes to the target repair mesh model.

[0107] The target holes can be perforated structures with specific functions. Target holes include at least one of marker holes, suspension holes, and screw holes. Marker holes are used to identify different target prosthesis mesh models and can be assigned numbers or other information to distinguish them. Suspension holes are used to suspend sutures, allowing the suture to be threaded through the dura mater and / or related soft tissues and then knotted on the prosthesis mesh entity generated from the target prosthesis mesh model, which facilitates healing of the brain and muscles. Screw holes provide space for fixation of the skull and the prosthesis mesh entity generated from the target prosthesis mesh model. By incorporating screw steps and / or screw holes on the target prosthesis mesh model, the screw spacing can be adjusted arbitrarily.

[0108] Specifically, the type, quantity, and location of the target holes to be added are determined. Based on the quantity and location of different types of target holes, holes are drilled in the target restoration mesh model to add target holes, facilitating the implementation of subsequent specific functions. A schematic diagram of the target holes is shown below. Figure 8 As shown in the diagram, the target prosthesis mesh model is installed onto the skull. Figure 9 As shown.

[0109] To avoid burrs when adding screw holes, the preset installation positions of the screws can be determined on the target prosthesis mesh model, and preset structural members can be added at the installation positions so that the screws can pass through the preset structural members and the prosthesis mesh entity can be installed on the skull.

[0110] The pre-designed structural components can be hollow solid structures, such as hollow cylinders, and the specific structure used can be determined according to actual needs.

[0111] It should be noted that marker holes and suspension holes can also be added using preset structural components. The preset structural components corresponding to marker holes, screw holes, and suspension holes can be the same or different; the shape and size of the preset structural components can be selected according to the usage requirements.

[0112] The technical solution of this invention involves constructing a skull model to be repaired based on a skull medical image, determining the defect area and a corresponding control model based on the skull model, constructing a first repair model based on the control model and a first thickness, reducing the defect edge in the skull model by a preset distance to obtain a reduced edge, constructing a second repair model based on the reduced edge and a second thickness, determining the model to be used based on the first and second repair models, dividing the model to be used into a mesh according to preset division parameters to obtain a mesh model to be processed, generating a mesh data structure based on the mesh model to be processed, and constructing a target prosthesis mesh model according to the mesh data structure and a preset line diameter. This solves the problems of poor matching between the prosthesis and the skull defect, as well as the difficulty and high risk of movement in fixing the prosthesis to the skull. It enables the construction of a step-shaped skull prosthesis based on the skull structure, improving the matching between the prosthesis and the skull defect, thereby improving the fixation effect between the prosthesis and the skull and reducing the risk of fixing the prosthesis to the skull.

[0113] Example 3

[0114] Figure 10 This is a schematic diagram of a cranial prosthesis construction device provided in Embodiment 3 of the present invention. Figure 3 As shown, the device includes: a skull model construction module 310 to be repaired, a first repair model construction module 320, a second repair model construction module 330, and a target repair body mesh model construction module 340.

[0115] The module 310 for constructing a skull model to be repaired is used to construct a skull model to be repaired based on a medical image of the skull. The module 320 for constructing a first repair model is used to construct a first repair model based on the skull model to be repaired and a first thickness. The module 330 for constructing a second repair model is used to construct a second repair model based on the defect edge, a preset distance, and a second thickness in the skull model to be repaired. The module 340 for constructing a target repair mesh model is used to construct a target repair mesh model based on the first repair model and the second repair model.

[0116] Optionally, the first repair model construction module 320 is further configured to determine, based on the skull model to be repaired, the defect area in the skull model to be repaired and the corresponding control part model; and to construct the first repair model based on the control part model and the first thickness.

[0117] Optionally, the first repair model construction module 320 is further configured to determine the defect area and symmetry plane in the skull model to be repaired based on the skull model to be repaired; determine the control area corresponding to the defect area with the symmetry plane as the center of symmetry, and determine the control part model based on the control area; correspondingly, the first repair model construction module 320 is further configured to symmetrically adjust the control part model according to the symmetry plane to obtain the repair model to be adjusted; and adjust the repair model to be adjusted according to the first thickness to obtain the first repair model.

[0118] Optionally, after constructing the first repair model based on the skull model to be repaired and the first thickness, the method further includes: a first repair model adjustment module, used to adjust the curvature of the first repair model according to the curvature of the defect edge in the skull model to be repaired, to obtain the adjusted first repair model.

[0119] Optionally, the second repair model construction module 330 is further configured to reduce the defect edge in the skull model to be repaired by a preset distance to obtain a reduced edge; and construct a second repair model based on the reduced edge and the second thickness.

[0120] Optionally, the target restoration mesh model construction module 340 is further configured to determine the model to be used based on the first repair model and the second repair model; perform mesh division on the model to be used according to preset division parameters to obtain the mesh model to be processed; generate a mesh data structure based on the mesh model to be processed, and construct the target restoration mesh model according to the mesh data structure and preset line diameter.

[0121] Optionally, the target repair body mesh model construction module 340 is further configured to determine a first positional relationship based on the first repair model and the defect edge, and determine a second positional relationship based on the second repair model and the defect edge; determine the installation positional relationship between the first repair model and the second repair model based on the first positional relationship and the second positional relationship; and perform a Boolean summation operation on the first repair model and the second repair model based on the installation positional relationship to obtain the model to be used.

[0122] Optionally, after constructing the target prosthesis mesh model, the device further includes: a target hole adding module for adding target holes to the target prosthesis mesh model; wherein the target holes include at least one of marker holes, suspension holes, and screw holes.

[0123] The technical solution of this invention involves constructing a skull model to be repaired based on a skull medical image, constructing a first repair model based on the skull model and a first thickness, constructing a second repair model based on the defect edge, a preset distance, and a second thickness in the skull model, and constructing a target prosthesis mesh model based on the first and second repair models. This solves the problems of poor matching between the prosthesis and the skull and high fixation risk between the prosthesis and the skull, and achieves the construction of a step-shaped skull prosthesis, improving the matching between the prosthesis and the skull, thereby improving the fixation effect between the prosthesis and the skull and reducing the risk of fixing the prosthesis and the skull.

[0124] The cranial prosthesis construction device provided in the embodiments of the present invention can execute the cranial prosthesis construction method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the method.

[0125] Example 4

[0126] Figure 11 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0127] like Figure 11 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0128] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0129] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the cranial prosthesis construction method.

[0130] In some embodiments, the cranioplasty construction method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or mounted on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the cranioplasty construction method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the cranioplasty construction method by any other suitable means (e.g., by means of firmware).

[0131] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0132] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0133] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0134] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0135] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0136] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0137] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0138] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for constructing a cranial prosthesis, characterized in that, include: Based on medical images of the skull, construct a model of the skull to be repaired; Based on the skull model to be repaired and the first thickness, a first repair model is constructed; Based on the defect edge, preset distance, and second thickness in the skull model to be repaired, a second repair model is constructed. The second repair model is a part used to combine with the first repair model to form a step-like structure. Based on the first repair model and the second repair model, construct a mesh model of the target repair body; The step of constructing a first repair model based on the skull model to be repaired and the first thickness includes: Based on the skull model to be repaired, determine the defect area in the skull model to be repaired and the corresponding control part model; Based on the aforementioned comparison model and the first thickness, a first repair model is constructed.

2. The method according to claim 1, characterized in that, The step of determining the defect area in the skull model to be repaired and the corresponding control model based on the defect area includes: Based on the skull model to be repaired, determine the defect area and the plane of symmetry in the skull model to be repaired; Using the plane of symmetry as the center of symmetry, determine the control area corresponding to the defective area, and determine the control part model based on the control area; Accordingly, constructing the first repair model based on the reference model and the first thickness includes: The comparison model is symmetrical about the plane of symmetry to obtain the model to be adjusted and repaired. Based on the first thickness, the model to be repaired is adjusted to obtain the first repair model.

3. The method according to claim 1, characterized in that, After constructing the first repair model based on the skull model to be repaired and the first thickness, the method further includes: Based on the curvature of the defect edge in the skull model to be repaired, the curvature of the first repair model is adjusted to obtain the adjusted first repair model.

4. The method according to claim 1, characterized in that, The step of constructing a second repair model based on the defect edge, preset distance, and second thickness in the skull model to be repaired includes: The defect edges in the skull model to be repaired are reduced by a preset distance to obtain the reduced edges; Based on the reduced edge and the second thickness, a second repair model is constructed.

5. The method according to claim 1, characterized in that, The step of constructing a target repair body mesh model based on the first repair model and the second repair model includes: Based on the first repair model and the second repair model, determine the model to be used; For the model to be used, the mesh is divided according to the preset dividing parameters to obtain the mesh model to be processed; Based on the mesh model to be processed, a mesh data structure is generated, and a target repair body mesh model is constructed according to the mesh data structure and the preset wire diameter.

6. The method according to claim 5, characterized in that, The step of determining the model to be used based on the first repair model and the second repair model includes: A first positional relationship is determined based on the first repair model and the defective edge, and a second positional relationship is determined based on the second repair model and the defective edge. Based on the first positional relationship and the second positional relationship, determine the installation positional relationship between the first repair model and the second repair model; Based on the installation position relationship, a Boolean summation operation is performed on the first repair model and the second repair model to obtain the model to be used.

7. The method according to claim 1, characterized in that, Following the construction of the target repair body mesh model, the following is also included: Add target holes to the target repair body mesh model; wherein the target holes include at least one of marker holes, suspension holes, and screw holes.

8. A cranial prosthesis construction device, characterized in that, include: The module for constructing a skull model to be repaired is used to construct a skull model to be repaired based on medical images of the skull. The first repair model construction module is used to construct a first repair model based on the skull model to be repaired and the first thickness. The second repair model construction module is used to construct a second repair model based on the defect edge, preset distance and second thickness in the skull model to be repaired. The second repair model is a part used to combine with the first repair model to form a step-like shape. The target repair mesh model construction module is used to construct a target repair mesh model based on the first repair model and the second repair model. The first repair model construction module is further configured to: determine the defect area in the skull model to be repaired and the corresponding control part model based on the skull model to be repaired; and construct the first repair model based on the control part model and the first thickness.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the method for constructing a cranial prosthesis as described in any one of claims 1-7.

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