Implant customized for patients with bone defects, method for designing same, and program and server therefor

Abstract

A method for designing a patient-customized implant for a bone defect site comprises the steps of: extracting, by a processor, a 3D image of a bone defect site; designing a 3D shape-based implant on the basis of the extracted 3D image of the bone defect site; calculating the direction and magnitude of partial loads received when the designed 3D shape-based implant is inserted into the bone defect site; designing, on the basis of the direction and magnitude of the partial loads, porosity of the designed 3D shape-based implant, the shape of solid metal, and the degree of porosity; and displaying, to a user, the designed 3D shape-based implant on the basis of the determined porosity, shape of solid metal, and degree of porosity.

Description

Customized implants for patients with bone defects, methods for designing them, programs, and servers for them.

[0001] The present disclosure relates to a patient-specific implant for bone defects, a method for designing the same, a program and a server therefor, and more particularly, to a patient-specific implant formed using 3D printing to fit a bone defect area of ​​a patient's body.

[0002] Comminuted fractures can occur due to trauma, such as traffic accidents or industrial accidents, or due to tumors. Bone defects can be divided into segmental defects, which do not involve the joint, and joint-involving defects, which involve the joint.

[0003] In the past, the production period for implants to reconstruct defects caused by the removal of tumors and other factors was excessively long, and the uniform design often did not fit the bone defect area, requiring excessive removal of normal bone.

[0004] In addition, if a metal implant is used in the area of ​​bone loss to fit the affected area, complications such as metal breakage may occur, and inflammation may occur in the area where the metal comes into contact with the area of ​​bone loss, and in severe cases, more serious problems may occur due to necrosis.

[0005] In addition, when using a porous implant in a bone defect area, complications such as metal breakage may occur due to the load in the bone defect area where the load is concentrated.

[0006] To address this, there is a growing need to create patient-specific implants using 3D printing that fit the missing bone area of ​​the patient's body, taking into account the shape, blood vessels, nerves, and body weight of the patient's missing body area.

[0007] The present disclosure relates to a patient-specific implant to be inserted into a conventional bone defect site, a method for designing the same, a program and a server therefor, and aims to resolve the problems occurring in the above-described conventional technology.

[0008] Specifically, the present invention aims to design a patient-customized implant to be inserted into a bone defect site while minimizing the bone defect site of the patient's body and minimizing complications such as metal breakage that may occur.

[0009] In addition, the present invention seeks to design a patient-specific implant to be inserted into a bone defect site in a patient's body that can prevent inflammation and, in severe cases, necrosis that occur at the point of contact between the implant and the bone defect site.

[0010] In addition, the present invention seeks to design a customized implant in which the degree of porosity of the implant is determined in consideration of the physical characteristics of the patient in a bone defect area of ​​the patient's body.

[0011] The technical problems to be achieved by the present disclosure are not limited to the technical problems described above, and other technical problems can be inferred from the following examples.

[0012] A design method according to an embodiment of the present invention may include a method for designing an implant for a bone defect site customized for a patient, the method including: a step of extracting a 3D image of a bone defect site by a processor; a step of designing a 3D shape-based implant based on the extracted 3D image of the bone defect site; a step of calculating a direction and magnitude of a partial load received by the designed 3D shape-based implant when inserted into the bone defect site; a step of designing a porosity and a solid metal shape, and a degree of porosity of the designed 3D shape-based implant based on the direction and magnitude of the partial load; and a step of displaying a 3D shape-based implant designed based on the determined porosity and solid metal shape, and a degree of porosity to a user.

[0013] In addition, the step of displaying to the user a 3D shape-based implant designed based on the shape and degree of the determined porosity and solid metal may further include a step of, when the user inputs a request for modification with respect to the determined shape and degree of porosity, the processor redesigning the shape and degree of porosity based on the request for modification.

[0014] In addition, the step of designing the shape and degree of porosity of the designed 3D shape-based implant based on the direction and magnitude of the load may further include the step of storing the determined shape and degree of porosity of the designed 3D shape-based implant and the user's input in first user data, and designing the user's 3D shape-based implant based on the stored first user data.

[0015] In addition, the method may further include a step of designing the shape and degree of porosity of the designed 3D shape-based implant based on the direction and magnitude of the load; and a step of designing the shape and degree of porosity of the designed 3D shape-based implant based on the location of blood vessels, location of nerves, structure and state of soft tissue within the 3D image of the extracted bone defect area.

[0016] In addition, the step of designing the shape of the porosity and solid metal of the designed 3D shape-based implant and the degree of porosity based on the direction and magnitude of the load for each part; the step of manufacturing the outer surface of the designed 3D shape-based implant and the direction of the load as a shape of solid metal, manufacturing the inner region of the designed 3D shape-based implant as a shape of porous metal, and performing a manufacturing change of the shape region of the solid metal into a porous shape based on the state of blood vessels, nerves, and soft tissues in the region in contact with the shape of the solid metal; may further be included.

[0017] In another embodiment, a server for designing a patient-specific implant according to a patient-specific guidance design server comprises a memory and a processor, wherein the processor is connected to the memory and extracts a 3D image of a bone defect site, designs a 3D shape-based implant based on the extracted 3D image of the bone defect site, calculates the direction and magnitude of a partial load received by the designed 3D shape-based implant when inserted into the bone defect site, designs the porosity and solid metal shape and the degree of porosity of the designed 3D shape-based implant based on the direction and magnitude of the partial load, and displays the designed 3D shape-based implant based on the determined porosity and solid metal shape and the degree of porosity to a user.

[0018] The processor may, when the user inputs a request for modification regarding the shape and degree of porosity determined, redesign the shape and degree of porosity based on the request for modification.

[0019] In addition, the processor may further include a step of storing the determined shape and degree of porosity of the designed 3D shape-based implant and the user's input in first user data, and designing the user's 3D shape-based implant based on the stored first user data.

[0020] In addition, the processor can design the shape and degree of porosity of the designed 3D shape-based implant based on the location of blood vessels, location of nerves, structure and condition of soft tissue in the 3D image of the extracted bone defect area.

[0021] In addition, the processor may perform a step of designing the porosity and solid metal shape of the designed 3D shape-based implant and the degree of porosity based on the direction and magnitude of the load for each part; the outer surface of the designed 3D shape-based implant and the direction of the load may be manufactured as a solid metal shape, the inner region of the designed 3D shape-based implant may be manufactured as a porous metal shape, and the shape region of the solid metal may be manufactured as a porous shape based on the state of blood vessels, nerves, and soft tissues in the region in contact with the shape of the solid metal.

[0022] Specific details of other embodiments are included in the detailed description and drawings.

[0023] According to the disclosed method, a patient-specific implant can be designed to be inserted into a bone defect site while minimizing the bone defect site of the patient's body and minimizing complications such as metal breakage that may occur.

[0024] In addition, the present invention can design a patient-specific implant to be inserted into a bone defect site that can prevent inflammation and, in severe cases, necrosis that occur at the point of contact between the implant and the bone defect site in the bone defect site of the patient's body.

[0025] In addition, the present invention can design a customized implant by determining the degree of porosity of the implant in consideration of the physical characteristics of the patient in a bone defect area of ​​the patient's body.

[0026] The effects of the invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0027] Figure 1 is a block diagram showing the structure of a design device according to one embodiment.

[0028] Figure 2 is a flowchart illustrating a method for designing a customized implant for a bone defect site according to one embodiment.

[0029] FIG. 3 is a detailed flowchart within a design method of a customized implant for a bone defect site according to one embodiment.

[0030] Figure 4 is a schematic diagram showing a customized implant designed for insertion into a partial bone defect area of ​​the femur in one embodiment.

[0031] FIG. 5 is a schematic diagram illustrating a customized implant designed for a partial bone defect area of ​​the femur according to the embodiment of FIG. 4.

[0032] Figure 6 is a schematic diagram showing a designed custom implant inserted into a part of a bone defect in the mandible in one embodiment, and a perspective view of the designed custom implant.

[0033] FIG. 7 is a schematic diagram showing a designed custom implant inserted into a part of a bone defect of a hip joint according to the embodiment of FIG. 6, and a perspective view of the designed custom implant.

[0034] The terms used in the examples have been selected from widely used, current terms, taking into account the functions of the present disclosure. However, these terms may vary depending on the intentions of those skilled in the art, precedents, the emergence of new technologies, etc. Furthermore, in certain cases, terms may be arbitrarily selected by the applicant, in which case their meanings will be described in detail in the relevant description. Therefore, the terms used in this disclosure should not be defined simply as names, but rather based on the meanings of the terms and the overall content of the present disclosure.

[0035] When a part of the specification is said to "include" a component, this does not exclude other components, but rather implies the inclusion of other components, unless otherwise specifically stated. Furthermore, terms such as "part," "module," etc., used in the specification refer to a unit that processes at least one function or operation, which may be implemented in hardware or software, or a combination of hardware and software, and, unlike the illustrated examples, may not be clearly distinguished in their specific operations.

[0036] The expression "at least one of a, b, and c" described throughout the specification may encompass 'a alone', 'b alone', 'c alone', 'a and b', 'a and c', 'b and c', or 'all of a, b, and c'.

[0037] In the following description, the terms “transmission,” “communication,” “sending,” “receiving,” or other similar meanings of a signal, message, or information include not only the direct transmission of information, message, or information from one component to another, but also transmission via another component.

[0038] In particular, "transmitting" or "sending" a signal, message, or information as a component indicates the final destination of the signal, message, or information, not its direct destination. The same applies to "receiving" a signal, message, or information. Furthermore, in the present disclosure, "relating" two or more pieces of data or information means that, upon acquiring one piece of data (or information), at least a portion of the other piece of data (or information) can be acquired based on that piece of data (or information).

[0039] Additionally, while terms such as first, second, etc. may be used to describe various components, these components should not be limited by these terms. These terms may be used to distinguish one component from another.

[0040] For example, without departing from the scope of the present disclosure, a first component could be termed a second component, and similarly, a second component could also be termed a first component.

[0041] Below, embodiments of the present disclosure are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present disclosure. However, the present disclosure may be implemented in various different forms and is not limited to the embodiments described herein.

[0042] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

[0043] FIG. 1 is a block diagram showing the structure of a design device according to one embodiment. For example, it can be performed by an electronic device (design device) (100) described with reference to FIG. 1. The method for designing a bone defect-specific implant according to one embodiment is described in multiple steps in FIGS. 2 and 3, but at least some of the steps may be performed in a reversed order, combined with other steps and performed together, omitted, divided into detailed steps and performed, or one or more steps not shown may be added and performed.

[0044] A method for designing a customized implant for a patient with a bone defect may include a step of displaying a three-dimensional view of the patient's skeletal region where the implant will be installed. For example, if the patient has a tumor around the femur, the "patient's skeleton" may be defined as the area surrounding the femur. However, this definition can also apply to any area with a bone defect, not just the femur.

[0045] At this time, the 3D view displayed by the electronic device (100) may display the skeleton transparently or opaquely. In this case, if the skeleton is displayed transparently, the user may be able to confirm the location of blood vessels and nerves located within the skeleton. In addition, the 3D view displayed by the electronic device (100) may also clearly distinguish between cartilage and tibia. Therefore, the electronic device (100) can clearly distinguish the location of blood vessels within the skeleton through the 3D view. Here, the user may correspond to a worker who designs an implant using the electronic device (100), or a doctor who confirms or modifies the designed implant.

[0046] Figure 1 is a block diagram showing the structure of a design device according to one embodiment.

[0047] According to one embodiment, the electronic device (100) may include an input / output interface (101), a memory (103), and a processor (105). In one embodiment, the electronic device (100) may be connected to an external server or database through a transceiver or a communication interface and may exchange data.

[0048] The processor (105) can perform the method described above through FIGS. 2 and 3. The memory (103) can store information for performing at least one method described above through FIGS. 1 and 2. The memory (103) can be a volatile memory or a non-volatile memory.

[0049] The processor (105) can control the electronic device (100) to execute a program and provide information. The code of the program executed by the processor (105) can be stored in the memory (103).

[0050] The processor (105) is connected to the memory (103), and can visually display a three-dimensional image of the bone defect area, design the implant, and determine the porosity of the implant by considering the patient's bone defect area, the degree of load, etc. In this case, the processor (105) can continuously learn the patient's bone defect area, the degree of load, the location of nerves, etc., and determine the porosity of the implant through an artificial intelligence model.

[0051] Specifically, the artificial intelligence-related functions according to the present disclosure may be operated through a processor (105) and a memory (103). The processor may be composed of one or more processors. In this case, the one or more processors may be a general-purpose processor such as a CPU, an AP, a DSP (Digital Signal Processor), a graphics-only processor such as a GPU, a VPU (Vision Processing Unit), or an artificial intelligence-only processor such as an NPU.

[0052] One or more processors control the processing of input data according to predefined operating rules or artificial intelligence models stored in memory. Alternatively, if one or more processors are dedicated AI processors, the AI ​​processors may be designed with a hardware structure specialized for processing a specific AI model.

[0053] Predefined behavioral rules or AI models are characterized by being created through learning. Here, "created through learning" means that the basic AI model is trained using a learning algorithm using a large amount of learning data, thereby creating predefined behavioral rules or AI models set to perform a desired characteristic (or purpose).

[0054] Specifically, in the present invention, the processor (103) can determine the degree of porosity by considering the degree of load, bone thickness, size of bone defect, shape of bone defect area, etc., as it learns to design an implant suitable for multiple bone defect locations.

[0055] This learning may be performed on the device itself, where the artificial intelligence according to the present disclosure is implemented, or through a separate server and / or system. Examples of learning algorithms include, but are not limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning.

[0056] An artificial intelligence model may be composed of multiple neural network layers. Each of the multiple neural network layers has multiple weight values, and performs neural network operations through operations between the operation results of the previous layer and the multiple weights. The multiple weights of the multiple neural network layers may be optimized based on the learning results of the artificial intelligence model. For example, the multiple weights may be updated so that the loss value or cost value obtained from the artificial intelligence model is reduced or minimized during the learning process. The artificial neural network may include a deep neural network (DNN), and examples thereof include, but are not limited to, a convolutional neural network (CNN), a deep neural network (DNN), a recurrent neural network (RNN), a restricted boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), or deep Q-networks.

[0057] Through learning of such an artificial intelligence model, the electronic device (100) can design a design of an implant customized for each bone defect.

[0058] The electronic device (100) according to the above-described embodiments may include a processor, a memory for storing and executing program data, a permanent storage such as a disk drive, a communication port for communicating with an external device, a user interface device such as a touch panel, a key, a button, etc. Methods implemented as software modules or algorithms may be stored on a computer-readable recording medium as computer-readable codes or program commands that can be executed on the processor. Here, the computer-readable recording medium includes a magnetic storage medium (e.g., read-only memory (ROM), random-access memory (RAM), floppy disk, hard disk, etc.) and an optical reading medium (e.g., CD-ROM, DVD (Digital Versatile Disc)). The computer-readable recording medium may be distributed to computer systems connected to a network, so that the computer-readable code can be stored and executed in a distributed manner. The medium is readable by a computer, stored in a memory, and executed by a processor.

[0059] The present embodiment may be represented by functional block configurations and various processing steps. These functional blocks may be implemented by various hardware and / or software configurations that perform specific functions. For example, the embodiment may employ direct circuit configurations such as memory, processing, logic, look-up tables, etc., which may perform various functions under the control of one or more microprocessors or other control devices. Similarly, the present embodiment may be implemented in a programming or scripting language such as C, C++, Java, assembler, etc., including various algorithms implemented as a combination of data structures, processes, routines, or other programming configurations. Functional aspects may be implemented as algorithms that execute on one or more processors. Furthermore, the present embodiment may employ conventional techniques for electronic configuration, signal processing, message processing, and / or data processing. Terms like "mechanism," "element," "means," and "composition" can be used broadly and are not limited to mechanical or physical components. These terms can also encompass a series of software routines, such as those associated with a processor.

[0060] As described above, the electronic device (100) of FIG. 1 can also be configured and operated by one or more servers including the electronic device.

[0061] Below, a method for designing a customized implant for a bone defect area operated by a processor (103) of an electronic device (100) is described.

[0062] First, the processor (103) extracts a 3D image of the bone defect area (10). Specifically, the user can obtain a 3D image through 3D anatomical rendering of the patient's bone defect area.

[0063] Next, the processor (103) can convert the selected 2D CT layer into a 3D image model (20). To this end, the processor (103) acquires computed tomography (CT) information of the bone defect area. The processor (103) designs an implant shape based on the 3D shape of the bone defect area of ​​the patient (30). That is, the processor (103) designs an implant shape that fits the bone defect area of ​​the patient, and can design the implant by taking into account all features such as the patient's bone shape, the patient's bone thickness, the nerve structure of the bone defect area, and the location of blood vessels.

[0064] Specifically, the processor (103) can be designed, including the degree of porosity, shape, components, and design, taking into account the patient's body part, load, location of nerves, etc. (40).

[0065] The implants designed here can be composed of various materials. For example, some parts of the implant may be formed of metal. Specifically, they may be made of lightweight titanium. If manufactured using a 3D printer, the implant can be created by melting the metal material and then layering it onto the implant using an additive manufacturing method, which creates an identical image to the created image.

[0066] Additionally, a portion of the implant may be formed of a porous metal material, intended to be inserted into the bone defect area to replace the missing bone. Forming the implant with a porous metal material can increase the bone fusion rate with the existing bone and reduce the weight of the implant.

[0067] However, if the implant is constructed only with a porous metal material to increase the bone fusion rate, complications such as metal breakage may occur due to the load at the location where the load is applied.

[0068] Accordingly, it can be designed including the degree of porosity, shape and composition of porosity, and design by taking into account the patient's body part, load, and location of nerves (40).

[0069] Here, the porous shape of the implant can refer to the proportion of the total volume of the implant that is designed as porous. For example, a porous shape of 0% can be seen as the implant being designed only as a solid shape, not as a porous metal material. In contrast, a porous shape of 80% can be seen as the implant being designed as a porous shape for 80% of the total volume of the implant, and as a laminated metal shape for 20%.

[0070] Additionally, porosity (porosity) refers to the pore size and structure of the porous layer. For example, it can be configured to include a porous structure or a honeycomb structure, and the pore size can also be determined by examining the patient's bone density. Therefore, as porosity increases, the pore size of the porous structure increases, which enhances osseointegration in the bone defect area, facilitating faster functional recovery.

[0071] That is, the processor (103) can be designed to determine the degree of porosity by configuring the portion where the implant to be inserted receives a load (force) to be solid and the remainder to be porous.

[0072] Specifically, the processor (103) can determine the degree of porosity of the implant based on data learned by the processor (103) by considering the volume, shape, and load of the patient's bone defect area.

[0073] That is, the processor (103) can store the shape and degree of the determined porosity of the designed 3D shape-based implant and the user's input in the first user data, and design the user's 3D shape-based implant based on the stored first user data.

[0074] For example, when designing an implant to be inserted into the heel, where the bone defect area is subject to a large load, the processor (103) may provide a design by setting the degree of porosity to a low level. In addition, when designing an implant for a bone defect area of ​​the femur, the processor (103) may design the shape and degree of porosity to be different between the outer portion that maintains the bone structure of the implant and the inner region.

[0075] For example, the processor (103) can be designed to have different shapes and degrees of porosity depending on the size, volume, and location of the defective area.

[0076] For example, if the shape of the defective portion is thin, the processor (103) may suggest a design in which the proportion of the solid shape is increased and the proportion of the porous shape is decreased.

[0077] In contrast, if the shape of the defective portion is thick, the processor (103) may suggest reducing the proportion of the solid shape and increasing the proportion of the porous shape so that it can be designed to be lightweight.

[0078] As another example, if the shape of the defective part is a long shape, a design can be proposed to minimize the occurrence of side effects such as breakage by increasing the proportion of solid shapes and reducing the proportion of porous shapes.

[0079] In this way, the processor (103) can perform design proposals by setting different criteria according to the size, volume, and size of the patient's missing part, the patient's height or weight, and the patient's body part in calculating the shape and degree of porosity, and the criteria can be updated and provided in a customized manner as various patients' actual data are learned.

[0080] Additionally, if a design considering the porosity of the implant is displayed to the user based on the degree of porosity determined by the processor (103), the user can request modification to the designed degree of porosity and redesign the shape and degree of porosity based on the modification information.

[0081] For example, if the processor (103) displays to the user that the 3 mm area of ​​the outer portion that maintains the skeleton of the implant is designed as a solid metal and the inner portion is designed as porous, the user can input a change request to design the 3 mm area of ​​the outer portion as a 5 mm solid metal, and the processor (103) can change the design to a solid metal for the 5 mm area of ​​the outer portion based on the input change request.

[0082] As another example, if the processor (103) designs the skeleton of the implant as a solid metal along the load direction and designing other areas as porous and displays this to the user, the user can request a design change for the part designed as a solid metal, and the processor (103) can perform the design change based on the changed request.

[0083] In this case, the processor (103) can learn about the modification information of the user.

[0084] In addition, the processor (103) can also determine the degree of porosity based on the location information of the nerves of the implant. For example, in a case where the degree of porosity is designed to differ between the outer portion that maintains the skeleton of the implant and the inner portion, if the shape of the outer portion overlaps with the location information of the nerves, it is possible to provide a design by changing the shape to a porous shape by taking the location information of the nerves into consideration.

[0085] Accordingly, the processor (103) can numerically calculate the shape and degree of porosity of the implant and provide the user with structural information of the customized implant based on the calculated information.

[0086] In addition, although not shown, the processor (103) may not only present a design for the overall shape information of an implant suitable for a bone defect area, but may also suggest a suitable implant including a bone defect area, in cases where additional cutting is required, etc.

[0087] In addition, the processor (103) can provide design information by appropriately adjusting the design of the metal porosity of the implant by considering information such as the condition of the patient's soft tissue and the condition of bone density.

[0088] Afterwards, the bone defect implant design method is 3D printed and output as an implant with a designed porous shape (50).

[0089] Specifically, FIG. 3 is a detailed flowchart of a design step (40) including the degree of porosity, shape and components, and design, taking into consideration the patient's body part, load, location of nerves, etc. in the flowchart of FIG. 2.

[0090] First, the processor (103) calculates the load for each part of the patient's defective area where the designed implant is installed (41).

[0091] In this case, calculating the partial load may include predicting or calculating the partial load by reflecting the patient's weight information, gait information, posture information, etc.

[0092] Additionally, the processor (103) performs a step of confirming the location and tissue of the nerve at the location where the customized implant is installed in the patient's defective area (42).

[0093] Additionally, the processor (103) performs a step of optimizing the porous design of the customized implant by considering the calculated load applied to the patient's bone defect area (43).

[0094] Thereafter, the processor (103) performs a step of confirming or modifying the optimized porous customized implant designed within the electronic device (100) by the surgeon (surgeon) to determine the final implant design (44).

[0095] In the flow chart of Fig. 2, the design step (40) including the degree of porosity, shape and components, and design by considering the patient's body part, load, location of nerves, etc. can be optimized through learning of an artificial intelligence model to design the implant.

[0096] Below, FIGS. 4 to 7 are examples of implants in bone defect areas according to one embodiment.

[0097] First, Fig. 4 is a schematic diagram showing a form in which a customized implant designed for a partial bone defect area of ​​a femur is inserted in one embodiment.

[0098] FIG. 5 is a schematic diagram showing only a customized amputation patient implant designed for a partial bone defect area of ​​the femur according to the embodiment of FIG. 4.

[0099] FIG. 4 is a first embodiment (300), showing a front perspective view (a), a rear perspective view (b), a right perspective view (c), and a left perspective view (d) of an implant (320) for amputation patients connected to a femur (310) in a form connected to a connecting portion (330).

[0100] The femoral implant (320) of the first embodiment (300) may include a region (320c) including a plurality of holes into which screws fixed to the femur can be assembled, and a joining region (320b) that is joined to a connecting portion (330).

[0101] Additionally, as illustrated, the femoral implant (320) of the first embodiment (300) may include a porous metal design region and a solid metal design region.

[0102] For example, in the front perspective view of (a) of FIG. 4, the porous metal design area and the bonding area (320b) are shown on the front, and in the rear perspective view of (b) of FIG. 4, the solid metal design area and the bonding area (320b) can be connected to the connecting portion (330).

[0103] Likewise, looking at the (a) back view, (b) plan view, (c) front perspective view, (d) right perspective view, (e) left perspective view, and (f) rear perspective view of the femoral implant (320) of FIG. 5, it can be seen that the portion of the femoral implant (320) that is connected to the femur is manufactured in a porous shape to increase the bone fusion rate with the existing femoral bone, and the portion that includes a screw hole to enable connection of the femur and the implant is designed with a solid metal.

[0104] Next, FIG. 6 shows a schematic diagram (a) showing a designed custom implant (420) inserted into a part of a bone defect in the mandible in one embodiment (400), a front perspective view (b) of the designed custom implant, and a rear perspective view (c) of the designed custom implant.

[0105] First, the processor (103) can design the shape of a customized implant suitable for the bone defect area of ​​the mandible, and then proceed with a detailed design considering the degree of porosity customized for the bone defect area from the designed shape.

[0106] For example, as illustrated in FIG. 6, it can be seen that the area (420c) including screw holes so that the mandibular implant (420) can be fixed to the mandible (430) includes multiple holes and is designed in a flat shape with solid metal.

[0107] In addition, it can be confirmed in (b) and (c) of FIG. 6 that the external skeleton of the mandibular implant (420) is designed as a solid type and the internal skeleton is designed as a porous metal.

[0108] Next, FIG. 7 is a schematic diagram showing a designed custom implant inserted into a part of a bone defect of a hip joint according to one embodiment, and a perspective view of the designed custom implant.

[0109] FIG. 7 illustrates a customized implant (520) designed for a partial bone defect area of ​​a hip joint according to the third embodiment (500), the left and right hip joints (510a, 510b), and the sacrum (530).

[0110] Here, (b) and (c) are perspective views of the customized implant, and it can be seen that it is designed with a porous shape to increase the fusion rate in the area interlocked with the hip joint.

[0111] The above-described embodiments are merely examples, and other embodiments may be implemented within the scope of the claims set forth below.

[0112] 100: Electronic devices

[0113] 101: Input / Output Interface

[0114] 103: Memory

[0115] 105: Processor

[0116] 300: First embodiment

[0117] 320: Implant of the first embodiment

[0118] 400: Second embodiment

[0119] 420: Implant of the second embodiment

[0120] 500: Third embodiment

[0121] 520: Implant of the third embodiment

Claims

1. A method for designing an implant for a bone defect area tailored to the patient, A step in which the processor extracts a 3D image of the bone defect area; A step of designing a 3D shape-based implant based on a 3D image of the extracted bone defect area; A step of calculating the direction and magnitude of the partial load received when the designed 3D shape-based implant is inserted into the bone defect area; A step of designing the shape of the porosity and solid metal of the designed 3D shape-based implant, and the degree of porosity based on the direction and magnitude of the load for each part; and A design method comprising: a step of displaying to a user a 3D shape-based implant designed based on the shape of the porous and solid metal determined above, and the degree of porosity; 2. In paragraph 1, A step of displaying to a user a 3D shape-based implant designed based on the shape and degree of the porous and solid metal determined above; A design method further comprising: when the user inputs a modification request for the shape and degree of the determined porosity, the processor redesigns the shape and degree of the porosity based on the modification request.

3. In paragraph 2, A step of designing the shape and degree of porosity of the designed 3D shape-based implant based on the direction and magnitude of the load; The shape and degree of porosity of the designed 3D shape-based implant and the user's input are stored in the first user data, A design method further comprising: a step of designing a 3D shape-based implant of the user based on the stored first user data; 4. In paragraph 1, A step of designing the shape and degree of porosity of the designed 3D shape-based implant based on the direction and magnitude of the load; and A design method further comprising a step of designing the shape and degree of porosity of the designed 3D shape-based implant based on the location of blood vessels, location of nerves, structure and condition of soft tissue in the 3D image of the extracted bone defect area.

5. In paragraph 4, A step of designing the shape of the porosity and solid metal of the designed 3D shape-based implant, and the degree of porosity based on the direction and magnitude of the load for each part; The outline of the above designed 3D shape-based implant and the direction of the load are manufactured in the shape of a solid metal, The internal area of ​​the above designed 3D shape-based implant is manufactured in the shape of a porous metal, A design method further comprising a step of manufacturing a shape area of ​​the solid metal into a porous shape based on the state of blood vessels, nerves, and soft tissues in the area in contact with the shape of the solid metal.

6. In the server that designs implants customized for each patient, Includes memory and processor, The above processor is connected to the above memory, Extract a 3D image of the bone defect area, A 3D shape-based implant is designed based on the 3D image of the extracted bone defect area, When the designed 3D shape-based implant is inserted into the above bone defect area, the direction and magnitude of the partial load are calculated, Based on the direction and magnitude of the load for each part, the shape of the porosity and solid metal of the designed 3D shape-based implant and the degree of porosity are designed, A server that displays to a user a 3D shape-based implant designed based on the shape of the porous and solid metal determined above, and the degree of porosity.

7. In paragraph 6, The processor is a server that, when the user inputs a request for modification regarding the shape and degree of porosity determined, the processor redesigns the shape and degree of porosity based on the request for modification.

8. In paragraph 7, The above processor stores the shape and degree of porosity of the designed 3D shape-based implant and the user's input in the first user data, A server further comprising a step of designing a 3D shape-based implant of the user based on the stored first user data.

9. In paragraph 6, The above processor is a server that designs the shape and degree of porosity of the designed 3D shape-based implant based on the location of blood vessels, location of nerves, structure and condition of soft tissue in the 3D image of the extracted bone defect area.

10. In paragraph 9, The above processor, A step of designing the shape of the porosity and solid metal of the designed 3D shape-based implant, and the degree of porosity based on the direction and magnitude of the load for each part; The outline of the above designed 3D shape-based implant and the direction of the load are manufactured in the shape of a solid metal, The internal area of ​​the above designed 3D shape-based implant is manufactured in the shape of a porous metal, A server that performs a change in the shape area of ​​the solid metal into a porous shape based on the state of blood vessels, nerves, and soft tissues in the area in contact with the shape of the solid metal.

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