CN117669122A

CN117669122A - Brace modeling method, equipment, medium and brace manufacturing method

Info

Publication number: CN117669122A
Application number: CN202211056277.7A
Authority: CN
Inventors: 李佳亮; 黄鹤源; 李建任
Original assignee: Guangzhou Heygears IMC Inc
Current assignee: Guangzhou Heygears IMC Inc
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2024-03-08
Also published as: WO2024045916A1

Abstract

The application relates to a brace modeling method, equipment, a medium and a brace manufacturing method, and relates to the technical field of brace design, wherein the brace modeling method comprises the following steps: acquiring a three-dimensional model of a limb target part; determining feature mark points of the three-dimensional model; determining a support modeling parameter of the three-dimensional model according to the feature mark points; based on the support modeling parameters, the support file information corresponding to the target part is generated so that the support can be manufactured by using the support file information later, thereby improving the convenience and accuracy of support modeling, meeting the personalized requirements of support design, improving the matching degree of the obtained support model and the limbs of a patient, solving the problem that the support file information designed by the existing automatic generation design flow can only be subjected to simple model processing and cannot be really applied to complex support design, effectively reducing the design time of support manufacturing and the support design cost.

Description

Brace modeling method, equipment, medium and brace manufacturing method

Technical Field

The application relates to the technical field of brace design, in particular to a brace modeling method, equipment, a medium and a brace manufacturing method.

Background

In clinical work, patients often require protective brace fixation for 2-5 weeks after undergoing forearm surgery, such as fracture reduction, tumor resection, or tendon adhesive release. The protective brace plays a role in temporarily protecting and braking the affected limb, and is beneficial to maintaining the treatment effect of the operation. Currently, the protective braces commonly used in clinic mainly comprise small splints, plaster and the like, and clinicians have plentiful experience with such protective braces for adults, but there are a number of inconveniences with using such protective braces for patients.

Along with the development of the digital technology in the field of the support, a digital three-dimensional model of the support is obtained through digital design, and then a new mode for manufacturing the support is realized by preparing the fixed support in a corresponding molding mode. The automatic generation design flow of the existing support is simpler, the simple design can be carried out only, the dependence on related professionals such as doctors and the like on the design of the support is high, the degree of matching between the designed support and the limb part of a patient is limited mainly according to the experience of the doctors, and the use requirement of the patient is difficult to meet.

Disclosure of Invention

In view of this, the present application provides a brace modeling method, apparatus, medium, and brace manufacturing method, so as to implement a brace modeling method customized according to a three-dimensional model of a patient limb, so that convenience and accuracy of brace modeling can be improved, and matching degree of the obtained brace model and the patient limb can be improved.

In a first aspect, the present application provides a brace modeling method comprising: acquiring a three-dimensional model of a limb target part; determining characteristic mark points of the three-dimensional model; determining a support modeling parameter of the three-dimensional model according to the feature mark points; and generating the support file information corresponding to the target part based on the support modeling parameters.

In a second aspect, the present application provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus; the memory is used for storing a computer program; the processor is configured to implement the steps of the brace modeling method as described in the first aspect when executing a program stored on the memory.

In a third aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the brace modeling method as described in the first aspect.

In a fourth aspect, the present application provides a method of making a brace, the method comprising: and 3D printing is carried out according to the stent file information to obtain the stent, wherein the stent file information is obtained by modeling according to the stent modeling method in the first aspect.

According to the method and the device for modeling the limb, the three-dimensional model of the limb target part is obtained, the feature mark points of the three-dimensional model are determined, and the modeling parameters of the support of the three-dimensional model are determined according to the feature mark points, so that the support file information corresponding to the target part can be generated based on the modeling parameters of the support, automatic modeling of the support can be realized, and the support for fixing the target limb can be generated by utilizing the support file information. The support modeling mode is based on the anatomical features of the body part of the patient and is designed according to the feature mark points on the skin data of the patient, so that the support modeling mode is more convenient and accurate compared with the traditional mode of simply designing according to experience, the personalized requirement of support design is met, and the obtained support model is matched with the limb of the patient to a higher degree; in addition, the support modeling mode can solve the problems that the support file information designed by the existing automatic generation design flow can only be subjected to simple model processing and cannot be really applied to complex support design, can effectively reduce the design time of support manufacturing and reduce the support design cost.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic flow chart of a brace modeling method according to an embodiment of the present application;

FIG. 2 is a schematic diagram of feature marker points of a three-dimensional model according to an embodiment of the present application;

fig. 3 is a schematic diagram of an arm port cutting process according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of an arm port according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of a finger port cutting process according to an embodiment of the present application;

fig. 6 is a schematic diagram of a finger port cutting process according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a finger port and a tiger-mouth initial port provided in an embodiment of the present application;

FIG. 8 is a schematic diagram of a finger port and a tiger port provided in an embodiment of the present application;

FIG. 9 is a graph showing a circular array curve of an arm according to an embodiment of the present application;

FIG. 10 is a schematic diagram of the overall parting line of a three-dimensional model in an embodiment of the present application;

FIG. 11 is a schematic view of a flange of a three-dimensional model in an embodiment of the present application;

fig. 12 is a schematic diagram of a hollowed-out process in an embodiment of the application;

fig. 13 is a schematic view of a shape of a hollowed-out area of the brace according to the embodiment of the present application;

fig. 14 is a schematic view of a shape of another hollowed-out area of the brace according to the embodiment of the present application;

FIG. 15 is a schematic diagram of a mold separation process according to an embodiment of the present disclosure;

FIG. 16 is a schematic view of a wrapping clip of a brace provided in an embodiment of the present application;

FIG. 17 is a schematic view of a wrapping clip of another brace provided in an embodiment of the present application;

FIG. 18 is a schematic view of a reinforcement patch of a brace provided in an embodiment of the present application;

FIG. 19 is a schematic diagram of the process of generating a reinforcement model in an embodiment of the present application;

fig. 20 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

The present application provides a brace modeling method, as shown in fig. 1, in an embodiment, the brace modeling method provided in the embodiments of the present application may include the following steps:

Step 110, acquiring a three-dimensional model of a limb target part;

the brace in the present application may be used to fix the periphery of the affected side of the limb of the patient, so as to support the affected side, thereby performing an adjuvant therapy effect, and may specifically be a brace for fixing the limb portion, such as a brace for fixing the wrist, elbow, ankle, knee, etc., or a brace for fixing the trunk portion, such as a brace for the neck, spine, etc., which is not limited herein. It should be noted that, based on the similarity of animal bodies, the brace in the present application may also be a brace for other animal bodies, such as gorilla, monkey, dog, cat, etc., which are not listed here.

Further, the brace may be a fixed brace or a partially movable brace, for example, when the brace is used near the wrist, the brace may be designed to be fixed at the wrist, or may be designed to be movable at the wrist to meet different requirements of the patient in different rehabilitation stages, and similarly, the brace at other positions may be selected according to the requirements, which is not limited herein.

The target site may refer to any part of the limb where the brace is suitable for, in particular to a part of the patient where the brace is required to perform rehabilitation. The three-dimensional model of the target site may refer to a three-dimensional model for characterizing the target site, and may be used to determine the position, shape, contour, etc. of the brace to be matched, in particular, a three-dimensional model of the corresponding site obtained based on the type of brace, as described above, a three-dimensional model of a limb site, such as a hand, wrist, elbow, foot, ankle, knee, etc., or a three-dimensional model of a torso site, such as a neck, spine, etc.

In an application scenario, the patient side and the healthy side of the user are typically mirror images, as the patient side of the user's limb may have been broken or otherwise rendered unsuitable for scanning to design a brace. Therefore, the target part can be the healthy side of the user at this time, specifically, after the model of the healthy side is obtained, the model of the healthy side can be processed to generate a support model of the healthy side, and then mirror image processing is performed to obtain a support model applicable to the affected side; the three-dimensional model of the healthy side can be subjected to mirror image processing to obtain the three-dimensional model of the healthy side before the model is processed, and then the three-dimensional model after mirror image processing is performed to obtain the support model, which is not limited herein.

Specifically, there may be various ways of obtaining the three-dimensional model of the target portion, for example, 3D scan data of the target portion may be obtained by directly scanning the target portion of the user, and the three-dimensional model of the target portion may be generated by using the 3D scan data, so as to perform modeling by using the three-dimensional model. Or, the target body part can be acquired by shooting an image, specifically, a camera or a device with the camera, such as a mobile phone, a camera and the like, is used for shooting a video around the target body part or shooting around the target body part, and then the three-dimensional model of the target body part is obtained by performing reverse modeling, correction and the like based on the image.

More specifically, after photographing or video photographing of a target part of a patient, point cloud identification and reverse modeling are performed, it is necessary to make sure that if the video is photographed, frame extraction processing is required to be performed on the sampled video to convert the video into a photograph, and then point cloud identification and reverse modeling are performed. After the reverse modeling is completed, further performing correction processing on the reverse modeled model, such as eliminating unnecessary patches, repairing grid broken surfaces and other operations for optimizing the reverse modeling grid model, so as to obtain a three-dimensional model of the target part.

Further, the three-dimensional model of the target site in the embodiment of the present application may be a three-dimensional model of the skin of the target site, and is a three-dimensional model based on a patch, and has no thickness. Based on the above, the method and the device can be used for shooting or shooting video. In the related art, a bone model of a corresponding part is needed, and a brace is designed based on the bone model, so that CT scanning is needed, and the CT scanning needs to use a special instrument and is operated by a special operator, which is inconvenient and expensive. In contrast, the mode of taking a picture or shooting video in this application can greatly reduced the operation degree of difficulty, need not professional, and it is very convenient to use.

Step 120, determining feature mark points of the three-dimensional model;

specifically, after the three-dimensional model of the target part is obtained, the embodiment of the application can mark the key point according to the anatomical feature of the target part as the feature mark point of the three-dimensional model. The feature marker points specifically refer to key points on skin data of a target site, such as local protrusions, local depressions, etc. on the skin, and specifically may be shape change areas on the skin due to the shape and contour of bones. The number of the feature marking points can be one or more, and can be determined according to the design requirement of the brace. Taking a wrist brace as an example, referring to fig. 2, the feature points may include at least a phalangeal point a, a middle phalangeal point B, a little phalangeal point C, a radius point D, and an ulna point E. In addition, the determination and marking modes of the characteristic marking points can be realized by adopting automatic and/or manual operation modes. In addition, when the brace is an elbow joint brace, the feature-marked points may include left and right condyles, olecranon-marked points, and the like; when the brace is an ankle brace, the feature marker points may include medial and lateral ankle bone processes, toe joint bone processes, calcaneal bone processes, and the like; when the brace is a knee joint brace, the feature marker points may include medial and lateral condyles, patellar processes, and other processes near the knee joint surface; when the brace is a neck brace, the feature marker points may include points near the mandibular triangle, mandibular head, mandibular angular apophysis, etc., adjacent apophysis of the clavicle shoulder; when the brace is a thoracolumbar fixation brace, the characteristic mark points may include the shoulder, the armpit, the hip bone, and the like.

It should be noted that, according to the requirement of the brace modeling method in the present application, the three-dimensional model obtained in step 110 is a three-dimensional model matched with the skin of the limb of the patient, and is characterized by skin data of the limb of the patient, rather than bone data, so that a CT scan mode is not required to obtain the three-dimensional model, but a camera photographing or video recording mode is required.

In an embodiment, the step 120 may specifically include: performing feature recognition on the three-dimensional model to obtain feature mark points; and/or determining feature marker points according to the marking operation submitted on the three-dimensional model.

For example, the marking mode through identification can be realized through an artificial intelligence algorithm, and specifically, the three-dimensional model can be automatically identified according to the anatomical features of the target part, the design requirements of the support and the like, so that the identified key points are determined to be characteristic marking points of the three-dimensional model, and the three-dimensional model is marked.

In addition, the submitted marking operation mode can be used for marking on the three-dimensional model according to the shape, the outline, the experience and the like of the model in a manual mode, so as to obtain the characteristic marking points of the three-dimensional model. The marking operation may include various user operations for marking the key points, such as a mouse click operation submitted by a user for the key points of the three-dimensional model, a screen touch operation, and the like, which is not particularly limited in the embodiment of the present application.

As an example, after the three-dimensional model of the obtained limb target part is displayed on the display interface of the design software, the key point position marked on the three-dimensional model by the user can be determined according to the marking operation submitted by the user for the three-dimensional model, for example, in the case that the target part is near the hand and the wrist of the user, the apophysis point position such as the thumb, the index finger, the middle finger, the ring finger, the little finger, the ulna, the radius and the like can be manually marked on the three-dimensional model by adopting a manual marking mode according to the shape, the outline, the experience and the like of the three-dimensional model, so that the characteristic marking point of the three-dimensional model can be determined by capturing the manual marking operation of the user.

In addition, after the feature marker points are determined, the three-dimensional model may be further aligned in a coordinate system. The coordinate system may be a coordinate system determined from the feature marker points. In one application scenario, the coordinate system uses a geometric center point of the palm plane as an origin, and uses a normal direction of the palm plane as a z-axis, where the normal direction of the palm plane may specifically face a direction away from the palm. Wherein, the palm plane can be determined by the ulna and radius tuberosities and the middle finger tuberosities.

Step 130, determining support modeling parameters of the three-dimensional model according to the feature mark points;

The modeling parameters of the three-dimensional model may include various modeling parameters required for making the brace, for example, may include relevant parameter information of an extending direction, a center line, an axis, a port, a model, a size, and the like, which is not particularly limited in the embodiment of the present application. For example, after determining the feature marker points of the three-dimensional model, model cutting processing may be performed according to the feature marker points to obtain one or more brace port information, so as to determine brace modeling parameters of the three-dimensional model according to the brace port information.

It should be noted that, in the related art, the parameters of modeling the brace are obtained, that is, the three-dimensional model is designed mainly according to the experience of the doctor, and the fixed template is selected, but this way is difficult to truly match with the target part of the patient, so that the accuracy of the brace design and the comfort of wearing the brace by the subsequent patient are difficult to meet the needs of the patient. In the embodiment, the modeling parameters of the support are determined based on the characteristic mark points, wherein the characteristic mark points are key points of the target part of the limb of the patient and are key points on the skin of the patient, and the design is performed based on the characteristics of the target part of the patient, so that the matching degree of the designed support and the target part can be greatly improved, the personalized requirement of the support design is met, and the comfort level of the support worn by the patient subsequently can be improved.

And 140, generating the support file information corresponding to the target part based on the support modeling parameters.

Specifically, after determining the modeling parameters of the brace, the embodiment of the application may generate brace file information corresponding to the target portion based on the modeling parameters of the brace, so that the brace for supporting the target limb may be manufactured by using the brace file information later.

It should be noted that, the information of the brace file in the embodiment of the present application may include a three-dimensional graphic file required for manufacturing the brace, and may be displayed through a display screen of the electronic device. The graphic file may be a file which can be directly used for manufacturing the brace, or a file which needs to be further imported into other software for processing and then can be used for manufacturing the brace. In addition, the format of the file may be various, for example, stl, 3dxml, obj, stp, step, cgr, model, igs, etc., and is not particularly limited herein.

Therefore, according to the embodiment of the application, the three-dimensional model of the limb target part is obtained, the feature mark points of the three-dimensional model are determined, so that the modeling parameters of the support of the three-dimensional model are determined according to the feature mark points, support file information corresponding to the target part can be generated based on the modeling parameters of the support, automatic modeling of the support can be achieved, and the support for fixing the target limb can be generated by utilizing the support file information. The brace modeling mode is based on the anatomical features of the body part of the patient and is designed according to the feature mark points on the skin data of the patient, and compared with the traditional mode of purely designing according to experience, the brace modeling mode is more accurate, and the matching degree of the obtained brace model and the limbs of the patient is higher; in addition, the method can solve the problems that the existing automatic generation design flow design support file information can only be subjected to simple model cutting operation and cannot be really applied to complex support design, and realize a support modeling method customized according to a three-dimensional model of a limb of a patient, so that the design time of support manufacturing can be effectively reduced, and the support design cost is reduced.

The method for determining the modeling parameters of the brace of the three-dimensional model in the present application will be mainly described below by taking a wrist brace as an example.

Generating the port information of the support:

it will be appreciated that the three-dimensional model obtained is not one that can be used directly for brace production, but requires further processing. In an embodiment, the modeling parameters may include at least one brace port information. The brace port herein is an end opening of the brace, for example, an opening of the brace that allows the arm to extend out, an opening of the brace that allows the four fingers to extend out, an opening of the brace that allows the thumb to extend out, and the like. In an application scene, the openings of the four fingers and the thumb are two independent openings, the four fingers share one, and the thumb is used independently. In another application scenario, the four fingers and thumb, i.e. the whole palm, may share one opening, which may be specifically determined according to the user's requirement, which is not limited herein. The information of the port of the support, i.e. the modeling parameters corresponding to the end opening, may include the shape, position, size, angle, etc. of the port. In addition, when there are a plurality of pieces of the port information, the order of acquisition of the port information of each of the holders is not limited.

In this embodiment of the present application, determining modeling parameters of the brace according to the feature marker points may specifically include: determining at least one port cutting surface corresponding to the port information of the at least one support according to the feature mark points; and cutting the three-dimensional model by using at least one port cutting surface to obtain at least one support port information. Specifically, according to the embodiment of the application, each port required to be formed by the three-dimensional model can be determined according to the characteristic mark points of the three-dimensional model, a cutting surface for cutting the three-dimensional model to form the ports can be determined based on the characteristic mark points of the three-dimensional model, and then the three-dimensional model can be cut by using the corresponding port cutting surface to obtain corresponding support port information. The port cutting surface may be a plane formed based on the feature mark points, and of course, may be a curved surface in some application scenarios.

It will be appreciated that the wrist brace is used for rehabilitation of the wrist, both the brace and the model initially acquired need to include the palm and arm portions near the wrist so that the final resulting wrist brace can support the wrist.

(1) Arm port information:

in an embodiment, the cutting surface of the arm port may be generated based on the extending direction of the arm, and may be perpendicular to the extending direction of the arm, i.e. the arm extending line, and may be inclined to the arm extending line. In this embodiment, the method for determining the arm port cutting surface according to the feature mark points may include: an arm extension line is determined according to the feature mark points, and then an arm port cutting surface can be generated based on the arm extension line.

Specifically, the arm extension line may be determined in various ways. In one application scenario, the arm extension line may be commonly determined based on the middle phalangeal, ulnar, and radius bone prominences. Specifically, a point can be picked up on the line between the ulna and radius points, and then the middle phalangeal point and the picked up point are connected and further extended toward the arm direction, thereby obtaining an arm extension line.

In another application scenario, the arm extension line may be determined jointly based on only the ulna and radius points. Specifically, a line between the ulna and radius points is determined, a point is picked up on the line, and a straight line passing through the picked point is selected as an arm extension line.

In yet another application scenario, the arm extension line may be determined jointly based on the phalangeal, ulnar, and radial bone points. Specifically, a point can be picked up on the connecting line between the index finger bone protruding point and the ulna bone protruding point according to the relation among the index finger bone protruding point, the ulna bone protruding point and the ulna bone protruding point, and then the arm extension line is determined based on the picked point, the ulna bone protruding point and the ulna bone protruding point.

Of course, the above is only a few ways of determining the arm extension line, and the arm extension line may be determined by other ways based on the feature mark points in the present application, which is not listed here. Here, the direction represented by the above-described determined arm extension line and the like is not necessarily the true extension direction of the arm, and may be used as a preliminary prediction of the arm extension direction.

After the arm extension line is determined, an arm port cutting surface can be generated based on the arm extension line, and then the three-dimensional model can be cut by using the arm port cutting surface to obtain arm port information corresponding to the arm port cutting surface.

Specifically, the approximate position of the arm port may be determined based on the planner feature of the three-dimensional model, for example, the arm port may be located between the wrist joint and the elbow joint, may be located closer to the elbow joint, or may be located at a position that is equal to or three-fold and closer to the wrist joint, and may be determined based on the needs, experience, etc. of the patient, which is not limited herein.

After the approximate position of the arm port is determined, an arm port cut surface may be generated near the position, which may be perpendicular to the arm extension line described above, or may be inclined at an angle to the arm extension line as desired.

Further, referring to fig. 3 and 4, after determining the arm port cutting plane, the three-dimensional model may be cut by using the cutting plane, so as to obtain arm port information.

(2) Finger port information:

of course, as described above, the port information of the brace in the embodiment of the present application may include other port information required for making the brace, such as finger port information, in addition to the arm port information. The finger port information corresponds to the opening of the four finger ends.

In one embodiment, the finger port cut surface may also be generated based on the arm extension line described above. Specifically, referring to fig. 5, the arm extension line may be extended toward the palm direction, and then a point is picked up on the arm extension line, so as to generate a surface that passes through the pick-up point and is perpendicular to the arm extension line, and the surface may be used as a finger port cutting surface. Of course, in some application scenarios, the generated finger port cutting surface may not be perpendicular to the arm extension line, but form a certain inclination angle therewith; in addition, the finger port cutting surface can be subjected to proper translation operation.

In other embodiments, the finger port cut surface may be generated based on feature marker points associated with four digits, such as a surface on which one or more of the index phalangeal, middle phalangeal, innominate phalangeal, and little phalangeal points reside.

Specifically, referring to fig. 6, when determining the cut surface of the finger port, the surface where the phalangeal, middle phalangeal and little phalangeal are located may be determined.

In an application field, the surface is used as a cutting initial surface of the finger port, and after the cutting initial surface is determined, the surface can be rotated according to requirements, so that the cutting surface of the finger port is obtained. Wherein the angle of rotation of the cutting initiation surface may be determined based on patient requirements or brace modeling requirements. Specifically, the angle may be a spatial angle, and may specifically include an angle in a three-dimensional direction in space, for example, may include angles corresponding to three directions, i.e., an X direction, a Y direction, and a Z direction, in the three-dimensional space. After the finger port cutting surface is obtained, the three-dimensional model can be cut by using the finger port cutting surface, and the finger port information corresponding to the finger port cutting surface is obtained.

In addition, proper translation operation can be performed on the cutting initial surface according to the requirement, so that the obtained position of the finger port cutting surface meets the requirement. It should be noted that the finger port cut surface may be located near the middle palm print of the 3 main palm prints on the palm, so that the resulting brace may facilitate the bending of the palm of the patient. More specifically, the port cut surface may be located on a side of the palm print that is proximate to the palm root.

In another application scenario, the above-mentioned cutting initiation surface is a finger port cutting surface, that is, the cutting initiation surface does not perform a translation operation, and the required rotation angle is zero, or only performs one of a translation operation and a rotation operation.

(3) Tiger port information:

as described above, the openings of the support corresponding to the four fingers and the thumb may be one or two openings separated from each other, and in the case of two openings, that is, when the openings respectively include the finger end opening and the thumb end opening, the acquisition sequence of the information corresponding to the two end openings (that is, the finger port information and the tiger port information) is not limited.

In an embodiment, the brace port information may further include tiger port information, where the tiger port information corresponds to the opening of the thumb end. Similarly, in this embodiment, the tiger port cut surface is also generated first, and then the three-dimensional model is cut to obtain tiger port information. The tiger port cutting surface can be a surface associated with the finger port cutting surface, and the tiger port cutting surface and the finger port cutting surface can be irrelevant.

In one embodiment, the generation of the tiger port cut surface is associated with a finger port cut surface. In this embodiment, the finger port information is obtained first, and then the tiger port information is obtained. Specifically, as shown in fig. 7, when the three-dimensional model is cut by using the finger port cutting surface, a tiger port is formed at the thumb while generating the finger port information, and then a tiger port cutting surface is obtained based on the tiger port initial port so as to further cut the three-dimensional model, thereby obtaining the tiger port information. That is, the finger port cut surface needs to ensure that two cut ports are generated, namely, a finger port at four fingers and a tiger port at thumb, when the three-dimensional model is cut.

In one embodiment, the tiger cut surface may be determined based on finger port information, tiger port initial information, and other relevant feature marker points. Wherein the other relevant characteristic mark points can be two, one of which is one of an ulna bone protruding point and a radius bone protruding point, and the other of which is one of a phalangeal protruding point, a middle phalangeal protruding point and a little phalangeal protruding point.

Of course, in some embodiments, the tiger port cutting surface may also rotate with the origin of the cutting surface as the rotation center, so that the tiger port cutting surface obtained finally may have a certain inclination angle with the normal direction of the cutting surface.

After the tiger port cutting surface is generated based on the mode, the tiger port cutting surface is cut with the three-dimensional model, so that the tiger port shown in fig. 8 is obtained, and tiger port information is generated.

The brace formed according to the method of generating the tiger port information may not cover the metacarpophalangeal joint apophysis of the thumb, or may cover the metacarpophalangeal joint apophysis of the thumb, and is not limited thereto.

(II) generating an integral parting line:

it should be noted that, in the modeling process, the three-dimensional model in the present application is divided into two relatively independent parts, corresponding to the two splints of the finally obtained brace, and the division of the two parts is mainly performed based on the integral parting line.

Specifically, the integral parting line in the present application mainly refers to a line dividing the three-dimensional model along the longitudinal direction of the three-dimensional model of the acquired target site, such as the extending direction of the arm and the palm, and the centered position. It will be appreciated that, with the wrist joint as a boundary, the overall parting line may include an arm portion defined as an arm centerline and a palm portion defined as a palm centerline, and the overall parting line may be derived from the connection of the arm centerline and the palm centerline. Wherein, the arm center line and the palm center line can be determined based on the characteristic mark points.

For an arm centerline, it may be generated based on an arm extension line. Specifically, an arm extension line is first determined. The arm extension line may be determined by referring to the manner in the foregoing embodiment. After the arm extension line is obtained, referring to fig. 9, a plurality of points are selected as the cutting origin on the arm extension line, then a plurality of cutting planes passing through the corresponding cutting origin respectively and perpendicular to the arm extension line are generated by taking the arm extension line as the normal direction, and the plurality of cutting planes are intersected with the three-dimensional model to obtain a plurality of cutting curves positioned at the arm part, and the cutting curves are defined as circular cutting array curves. It can be understood that each of the circular cutting array curves is a closed curve, based on which the geometric center of the graph enclosed by each curve can be further determined, and each geometric center is connected, so as to obtain the arm center line.

The number of the cutting origins, the distance between the cutting origins and the like can be determined according to actual requirements, experience and the like. In the above embodiments, the cutting surfaces are perpendicular to the arm extension line, but the present application is not limited thereto, and for example, the cutting surfaces may be inclined to the arm extension line, and the inclination angles may be the same or different; or a part of the cutting surface is perpendicular to the arm extension line, and a part of the cutting surface is inclined to the arm extension line.

For palm centerline, it may be generated based on finger port information. That is, when it is necessary to generate the palm center line, the finger port information may be called, i.e., the generation of the palm center line may be after the generation of the finger port information. Specifically, referring to fig. 10, the geometric center point of the palmar plane may be determined according to the middle phalangeal point, the ulnar point and the radius point, wherein the palmar plane is a plane determined by the middle phalangeal point, the ulnar point and the radius point. A target plane is then generated that passes through the middle phalangeal point based on the palm plane geometric center point. The method comprises the steps of moving a geometric center point of a palm plane along a normal direction of the palm plane for a certain distance, or moving the palm plane along the normal direction of the palm plane for a certain distance, finding the geometric center point of the moved palm plane, and then taking a plane defined by the point obtained after the movement, the geometric center point of the palm plane and the middle finger apophysis point as a target plane; then intersecting the target plane with a palm opening curve corresponding to the finger port information to obtain two intersection points; and determining the midpoint of the connecting line between the two intersection points as a finger center point, and connecting the finger center point with the arm center line, which is close to the palm end point, to obtain the palm center line.

In addition, in the above steps, the target plane may be obtained in other manners, specifically, the midpoint of the connection line between the ulna apophysis point and the radius apophysis point may be connected with the middle phalanges apophysis point, and after the palm plane is determined, the connection line is shifted along the normal direction of the palm plane, so as to form the target plane.

Of course, in some embodiments, the palm center line may not be generated based on the finger port information, and it is understood that the generation of the finger port information and the generation of the palm center line are not in sequence.

And (III) generating port flanging information:

it can be appreciated that when the patient wears the brace, a certain contact, friction and collision are generated between the body part at the port and the port of the brace, and if each port of the brace finally obtained is realized along the structure of the body part, namely, the port edge is sharper, the patient can feel uncomfortable when wearing the brace, and even cause certain injuries. In this embodiment, a flange is further formed at the port of the brace, so that the finally obtained brace has a smooth transition area near the opening, and thus the safety and comfort of wearing by a patient can be improved. Wherein, each port of the brace such as an arm port, a finger port and a tiger port can generate a flanging.

In one embodiment, the cuff information may be generated for each port based on an overall split line. Specifically, the port flanging starting line can be determined according to the corresponding port information of the support. It will be appreciated that after the brace port information is generated, the corresponding port curve, i.e., the port edge curve, is determined, which in this embodiment may be determined as the start line of the port flange. The port flanging starting line is the position of the corresponding port starting flanging. The port flange termination line may then be determined based on the integral parting line and the port flange start line.

In another embodiment, port cuff information may also be generated based on brace port information. Specifically, the port flanging starting line can be determined according to the corresponding port curve, and then the port flanging ending line can be determined according to the corresponding port cutting surface, the normal line of the cutting surface and the port curve.

Here, the port flange end line is the end position of the port flange. In view of consistency, the port cuff termination line may be identical in shape to the corresponding port cuff start line. However, for flanging purposes, the port flanging termination line may be larger in size than the corresponding port flanging termination line and located at the periphery of the corresponding port flanging start line. Further, the port flanging starting line and the corresponding port flanging ending line can be connected through the curved surface to obtain corresponding port flanging information. The curved surface may be a regular or irregular curved surface to improve wearing comfort of the patient, and the specific curvature of the curved surface may be determined according to the patient's requirement or an empirical value, which is not limited herein.

Further, the port flanging information may include at least one of arm port flanging information, finger port flanging information, tiger port flanging information and the like corresponding to the arm port, the finger port and the tiger port respectively, and the generation modes of the port flanging information are described one by one.

(1) Arm port flanging information:

in one embodiment, the port flange termination line of the arm is generated based on an integral parting line.

Specifically, the arm port approach point may be determined first on the global parting line. It should be noted that, the position of the arm port near the point, i.e., the point on the arm center line near the arm port, on the arm center line may be closer to the wrist portion of the three-dimensional model than the turn-up starting line, i.e., the arm port curve, or may be farther from the wrist portion or equidistant from the turn-up starting line to the wrist portion. In this embodiment, the arm port near point is located at a side closer to the wrist of the three-dimensional model, and the distance between the curves of the arm port may be 90% of the length of the overall parting line, or may be set to other ratios, such as 82%, 84%, 86%, 88%, 92%, etc., according to the requirement, which is not limited herein.

After the arm port approaching point is determined, the arm port approaching point can be used as an amplifying center, the port flanging starting line corresponding to the arm port flanging information is utilized for carrying out expansion, the arm port flanging ending line corresponding to the arm port flanging information is obtained, and the arm port flanging starting line can be obtained by carrying out space expansion by taking the arm port approaching point as a perspective base point. The amplification curve is required to be located at the periphery of the arm port curve, namely the final obtained flanging termination line is required to be located at the periphery of the flanging starting line.

Further, after the flanging starting line and the flanging ending line are determined, the two curves can be used as starting and stopping positions of the flanging respectively to carry out arc surface transitional connection so as to obtain the flanging information of the arm port.

In another embodiment, the arm port cuff termination line may be determined based solely on arm port information.

Specifically, the arm port curve is translated for a certain distance along the normal direction of the cutting surface of the arm port, and then the geometric center of the shape surrounded by the curve is taken as an amplifying center for amplifying, so that the flanging termination line can be obtained. The amplification in this embodiment may be planar amplification. Similarly, the resulting turn-up ending line needs to be located at the periphery of the turn-up starting line. And then respectively taking the flanging starting line and the flanging ending line as starting and stopping positions of the flanging to carry out arc surface transitional connection so as to obtain the flanging information of the arm port.

(2) Finger port flanging information:

in one embodiment, the generation of the finger port cuff termination line is based on an integral parting line. The generation of the finger port flanging information in this embodiment is similar to the embodiment based on the integral parting line in the generation mode of the arm port flanging information, and specifically includes:

the finger port approach point is firstly determined on the integral parting line, namely, the point on the palm center line, which is close to the finger port, and the position on the palm center line is closer to one side of the wrist part of the three-dimensional model relative to the flanging starting line, namely, the finger port curve, but can also be farther from the wrist part or equidistant from the flanging starting line to the wrist part. As an example, the finger port approach point is located on the side closer to the wrist portion of the three-dimensional model, and the distance of the finger port curve may be 90% of the overall parting line length, but may be set to other ratios, such as 82%, 84%, 86%, 88%, 92%, etc., as required, which is not limited herein.

After the finger port approaching point is determined, the finger port approaching point can be used as an amplifying center, the port flanging starting line corresponding to the finger port flanging information is enlarged, the port flanging ending line corresponding to the finger port flanging information is obtained, and the finger port flanging starting line can be enlarged in space by taking the finger port approaching point as a perspective base point. The amplification curve is required to be located at the periphery of the finger port curve, namely the final obtained flanging termination line is required to be located at the periphery of the flanging starting line.

Further, after the flanging starting line and the flanging ending line are determined, the two curves can be used as starting positions of flanging to carry out arc-shaped surface transition connection so as to obtain finger port flanging information.

In another embodiment, the finger port cuff termination line may be determined based solely on finger port information.

Specifically, the finger port curve is translated for a certain distance along the normal direction of the finger port cutting surface, and then the geometric center of the shape surrounded by the curve is taken as an amplifying center for amplifying, so that the flanging termination line can be obtained. The amplification in this embodiment may be planar amplification. Similarly, the resulting turn-up ending line needs to be located at the periphery of the turn-up starting line. And then respectively taking the flanging starting line and the flanging ending line as starting and stopping positions of the flanging to carry out arc surface transitional connection so as to obtain the flanging information of the finger port.

(3) Tiger port flanging information:

in one embodiment, the generation of the port flanging termination line of the tiger mouth is based on an integral parting line.

Specifically, the tiger port proximity point is first determined based on the overall parting line. Specifically, the tiger port approach point may be a point on the integral parting line, or may be a point that is determined based on the integral parting line and is not located on the integral parting line.

After determining the point of proximity of the tiger port, the point of proximity of the tiger port can be used as an amplifying center, the port flanging starting line corresponding to the tiger port flanging information is enlarged, the port flanging ending line corresponding to the tiger port flanging information is obtained, and the tiger port flanging starting line can be enlarged spatially by taking the point of proximity of the tiger port as a perspective base point. The amplification curve is required to be located at the periphery of the finger port curve, namely the final obtained flanging termination line is required to be located at the periphery of the flanging starting line.

Similarly, in another embodiment, the tiger port cuff ending line may be determined based solely on tiger port information.

Specifically, the tiger port curve is translated for a certain distance along the normal direction of the tiger port cutting surface, and then the geometric center of the shape surrounded by the curve is taken as an amplifying center for amplifying, so that the flanging termination line can be obtained. The amplification in this embodiment may be planar amplification. Similarly, the resulting turn-up ending line needs to be located at the periphery of the turn-up starting line. And then, respectively taking the flanging starting line and the flanging ending line as starting and stopping positions of the flanging to carry out arc surface transitional connection so as to obtain the tiger mouth port flanging information.

Referring to fig. 11, arm port information, finger port flanging information, and tiger port flanging information can be generated according to the above modes.

(IV) generating support hollowed-out information:

it can be understood that in the rehabilitation process, the skin of the fixed part of the brace needs ventilation, and in the application, when modeling the brace, the information of hollowed-out the brace can be generated, so that the brace with hollowed-out can be obtained when the brace is manufactured later, and the ventilation and other requirements are met.

In one embodiment, hollowed-out information may be generated based on the overall parting line and brace port information, etc. The specific generation method may be various, and in this embodiment, the method of using bounding boxes and boolean operations is described as an example, which may include the following.

First, a box model is created that can enclose a three-dimensional model. Specifically, the three-dimensional model which is well turned or is not turned can be subjected to space evaluation, so that a box body model is created based on space evaluation results, and the whole three-dimensional model which needs to be hollowed out is wrapped. As shown in fig. 12, a cuboid model may be created to wrap the whole three-dimensional model requiring hollowing by using the cuboid model, and the cuboid model may be externally connected to the periphery of the three-dimensional model. Of course, in other embodiments, other shapes of the case mold may be used, which is not limited herein.

And secondly, cutting the box body model based on the integral parting line and combining support port information to obtain a cutting residual block. In this step, the cut portion of the box model corresponds to a portion of the three-dimensional model that does not need to be hollowed out. That is, the cut surplus block obtained by cutting the box model corresponds to a portion of the three-dimensional model that needs to be hollowed out. Referring to fig. 13, according to the usage requirement of the brace, the brace needs to reserve the vertical beam at the parting mold, the cross beam at the port and the middle support position, and the vertical beam at the side support position, so that the box model needs to be cut at the parts corresponding to the positions.

(1) Cutting the box body model based on vertical beams at the parting positions: because the vertical beam is located at the parting die of the support, the arrangement of the vertical beam can play a role in supporting the edge of the support, and a parting die cutting model is required to be generated according to the integral parting line of the three-dimensional model and used for performing first cutting on the box body model.

(2) Cutting the box body model based on a cross beam at a port: it will be appreciated that the cross beams at the ports also serve as edge supports and are dependent on the brace port information at the corresponding ports. Similarly, the offset may be first based on the plane defined by the corresponding brace port curve to form a cut model for the cassette model.

(3) Cutting of the box body model by the cross beam based on the middle supporting position: the position of the central support position can be determined first, and then a corresponding cutting model can be generated based on the relevant features of the position. Wherein the determination of the position of the intermediate support position may be based on consideration of performance requirements of the brace itself, other requirements of the patient, etc. In this embodiment, the medial support may include support near the ulna and radius points, where support is primarily to the wrist. In addition, since the distance of the wrist joint to the arm port may be long, a support position may also be set between the wrist joint and the arm port. Of course, the support may be provided at other locations as desired, such as between the wrist and the finger port, without limitation.

Specifically, the corresponding cutting model may be determined based on at least one of an ulna break, a radius break, an arm centerline, or an overall parting line, among others.

The cutting model obtained in the above (2) and (3) can be used for performing second cutting on the box body model.

(4) Cutting the box body model by a vertical beam based on side support positions: in this embodiment, the extending direction of the vertical beam of the side support position is identical to the extending direction of the integral parting line, so that a corresponding cutting model can be obtained based on the integral parting line, so as to perform a third cutting on the box body model.

The first, second and third cuts may be performed simultaneously or separately, and the sequence of the respective cuts is not limited. Further, after the above-mentioned cutting models are obtained, the box body model is cut by the cutting models, and the cut surplus blocks are obtained.

In addition, when cutting, can directly utilize the cutting model to cut the box body model, can also carry out the rotation of certain angle at first to the cutting model, specifically can regard the respective base point as the center, rotate with the z axle as the rotation axis, so can give rise to the fretwork of different angles in subsequent flow. For the non-rotating mode, the cross beams used for defining the hollowed-out area of the brace are distributed in a vertical mode (as shown in fig. 13), namely, the hollowed-out area is rectangular or trapezoid-like; for the rotation mode, the included angle between the intersecting cross beams for defining the hollowed-out area of the generating support is an oblique angle, namely, the hollowed-out area is shaped like a parallelogram (as shown in fig. 14). It should be noted that in an application scenario, a brace model formed by modeling in the application is formed into a brace layer by layer in a photocuring 3D printing mode, and for the condition of no inclination, a plurality of support structure sides are required to be added to enable brace structures near a hollowed-out area to be formed smoothly; in the case of tilting, the printing can be performed layer by layer based on the tilting structure, i.e. when the tilting structure is formed during printing, the former layer can be used as a support for the latter layer, so that no additional support is required, or only a small amount of support is required. It will be appreciated that a reduction in the number of supports enables, on the one hand, saving of printing material and, on the other hand, a reduction in the subsequent removal of the supports, thus improving the moulding efficiency.

In addition, in other embodiments, the generation of the brace hollowed-out information may not depend on the integral parting line, for example, hollowed-out may also be made according to grid lines of the three-dimensional model, specifically, hollowed-out holes may be generated based on the center point of each grid surface, which is not limited herein. However, by combining the generation mode of the integral parting line, the width of each edge of the brace can be more accurately determined, and the situation of insufficient strength caused by over-thin edges can be prevented.

And carrying out hollowed-out cutting on the three-dimensional model based on the residual block to obtain the hollowed-out information of the support.

It can be understood that the above-mentioned cut residual blocks correspond to the positions of the three-dimensional model, which need to be hollowed out, so that the support hollowed-out information is obtained after the three-dimensional model is cut by using the cut residual blocks.

It should be noted that, before the three-dimensional model is cut, the three-dimensional model needs to be thickened. It can be understood that the three-dimensional models in the foregoing steps 110 and 120 are respectively a dough sheet model without thickness, and the thickening operation refers to making the three-dimensional model have a certain thickness, and then performing the hollowed-out cutting.

And (V) generating support fitting information:

In some embodiments, the brace may be split into two or more parts, thus requiring some fitting to be installed on the brace to facilitate the assisted combining of the two or more parts into a unitary structure when worn by the patient. Thus, it is necessary to generate brace fitting information including fitting bits and the like corresponding to the fitting pieces in the brace modeling stage.

In one embodiment, the fitting includes mounting buttons on both sides of the split mold. When the assembly information of the support is generated, a parting curved surface can be determined based on the integral parting line, and two installation intersecting lines are formed by intersecting the parting curved surface with the three-dimensional model; fitting attachment points are then selected at the attachment intersection. It should be noted that, the selection of the mounting points of the assembly may be determined according to the number of the assemblies, for example, in the case that two assemblies are provided on each mounting intersection, the mounting points of the assemblies may be determined at three equal parts of the corresponding mounting intersection; in the case of three fitting parts disposed on each of the mounting intersections, the fitting part mounting points may be determined at four equal divisions of the corresponding mounting intersections, which is not limited herein.

In addition, the number of fittings corresponding to the two mounting intersections may be the same or different. In one embodiment, the assembly includes a mounting clip at one die segment and the other die segment is strapped by a wire wrap, such as a BOA lacing system, to provide a combination of multiple branches. The determination of the mounting points for the wound assembly can then be made empirically by the designer. In an application scenario, the fitting mounting point may be located at a position of the brace proximate the radius. Specifically, a transverse plane can be determined based on an integral parting line, and an installation intersection line positioned at one side of a radius is formed by intersecting the transverse plane with a three-dimensional model; fitting attachment points are then selected on the mounting intersection, and specifically the location of the mounting intersection near the radius prominence may be determined as the fitting attachment points.

Further, after determining the fitting mounting point, brace fitting information may be generated based on the fitting mounting point. Wherein the brace fitting information may further include a normal direction of the fitting corresponding to the fitting mounting point to facilitate subsequent fitting addition on the three-dimensional model. In particular, the normal direction of the fitting may be the direction of the normal of the corresponding fitting mounting point on the three-dimensional model. Of course, the direction may also be rotated and moved as desired with the fitting mounting point as the origin to generate brace fitting information based on the position of the rotated and moved fitting.

Further, after the fitting mounting point and the normal direction of the fitting are both determined, the fitting may be further added based on the fitting mounting point and the normal direction to obtain brace fitting information.

Additionally, in some embodiments, such as for a brace that is composed of only a portion, brace fitting information may not need to be generated.

And (six) generating brace pipe information:

referring to fig. 14, it will be appreciated that when the brace is assembled by winding, a conduit may be provided on the brace that allows the wire to pass through and constrain the wire path, i.e., the brace conduit described above. In one embodiment, the generation of the brace tube information may rely on an integral parting line, which may be formed specifically at the parting location of the brace, thereby joining the separated portions of the brace together by the wire.

Since the winding manner can be achieved by winding the plurality of sections around each other to improve the binding effect, the brace pipe can be provided in a form of a plurality of sections spaced apart from each other. In this embodiment, the brace pipe may be designed according to the foregoing manner of setting the brace beam. In addition, in order to further improve the binding effect, a wire may be further provided at least one of the finger port, the arm port, and the tiger port in addition to the wire at the position of the brace split mold, and thus, a brace pipe also needs to be designed at least one of the finger port, the arm port, and the tiger port.

Specifically, a parting curved surface and a plane of a cutting surface of each support port are intersected with a three-dimensional model to obtain a pipeline intersection line. The plane of the support port can be the plane where the support port is located and can be coincident with the cutting plane of the support port. The parting curved surface and the port plane of the support can be offset along the normal line of the parting curved surface by a certain distance and then are intersected with the three-dimensional model, and the parting curved surface can be reversely offset along the normal direction and the normal direction of the parting curved surface so as to form two offset parting curved surfaces which are intersected with the three-dimensional model to obtain two pipeline intersecting lines which are respectively positioned at two sides of the parting curved surface.

For the pipeline intersecting line at the parting mold, cutting can be performed by using a cutting model corresponding to the cross beam, so that a plurality of sections of spaced pipeline intersecting lines are obtained; and for the pipeline intersection line at the port of the brace, all pipeline intersection lines can be reserved according to the requirement, or only part of pipeline intersection lines can be reserved, and the method is not limited herein.

After the pipeline intersection is generated, a pipeline model can be further generated based on the pipeline intersection, so that the brace pipeline information is obtained. The radius of the pipeline model can be set according to the requirements, and the pipeline model is not limited herein.

It should be noted that, the generation of the above brace pipe information may be performed based on a thickened three-dimensional model. Specifically, before generating the support pipe information, the three-dimensional model can be thickened to obtain a thickened three-dimensional model, and then the pipe intersection line is determined according to the thickened three-dimensional model and by combining the parting curved surface or the parting curved surface and at least one support port plane; and performing pipeline generation operation based on the pipeline intersecting line to obtain the support pipeline information. The thickened three-dimensional model is the thickened three-dimensional model.

(seventh) generation of brace parting information:

it should be noted that the resulting brace may comprise two parts for wearing by a patient, the two parts together forming a receiving space for receiving a limb of the patient. The two parts may be divided into left and right parts based on the split curved surface, or may be divided into upper and lower parts along the aforementioned transverse plane, and are not particularly limited herein. In this case, the die-dividing curved surface can be rotated by a preset rotation angle to obtain a die-dividing cutting surface; and cutting the hollowed-out and cut three-dimensional model into two parts based on the die-cutting surface to obtain the die-cutting information of the support, as shown in fig. 15.

In an embodiment, the three-dimensional model may be directly cut by using the parting curved surface, that is, the preset rotation angle of the parting curved surface is zero, and the parting cutting surface coincides with the parting curved surface. It will be appreciated that each of the corresponding partial structures in this embodiment includes upper and lower clips for supporting the limb portion of the patient. Since the curved surface of the split mold is parallel to the z-axis, the widths of the upper and lower clip models corresponding to each portion are equal or approximately equal, as shown in fig. 16.

In another embodiment, the preset rotation angle is non-zero and is within this interval (-90 °,90 °). At this time, the parting cutting surface is not parallel to the z-axis, and it will be understood that each part of the structure corresponding to this embodiment also includes an upper and a lower clamping pieces. In this case, the widths of the upper and lower clip models corresponding to each portion are different, as shown in fig. 17. It should be noted that, the brace finally manufactured according to the scheme can better wrap the arm of the patient, and when the patient wears the brace and rotates the arm, the longer clamping piece of the brace can generate torsion resistance force to the arm of the patient, so that a better fixing effect can be generated on the arm of the patient, and the patient is helped to recover.

The selection of the above-mentioned mode is required to be consistent with the cutting mode of the box body model based on the vertical beam at the parting position in the step of generating the above-mentioned hollowed-out information, that is, the rotation angle of the parting curved surface at the position is consistent with the rotation angle of the parting curved surface in the step.

In yet another embodiment, the preset rotation angle is 90 ° or-90 °. At this time, the parting cutting surface is perpendicular to the z-axis and is thus coincident with the transverse plane, so that the three-dimensional model can be divided into an upper part and a lower part.

In addition, it should be noted that, the generation of the brace parting information may be generated in the last step of the brace modeling parameters, and then the parting process may be performed after other needed brace modeling parameters are generated, so as to generate brace parting information. Of course, it is also possible to perform all or part of the brace modeling parameters before generating, which is not limited herein.

(eight) generation of brace reinforcing information

In this application, in order to further strengthen the compressive resistance of brace, can produce brace reinforcement piece information at the brace modeling stage to make the brace that the preparation obtained have the reinforcement piece, specifically as shown in fig. 18, so, when the brace receives pressure, can play certain supporting role, thereby improve the intensity of brace.

Specifically, referring to fig. 19, during modeling, the parting curved surface may be offset first, specifically, may be offset along the normal direction and the opposite direction of the normal direction of the parting curved surface, so as to generate a strip parting cut body, and then the parting cut body is intersected with the three-dimensional model to obtain a strip reinforcement body, so as to primarily define a reinforcement area of the three-dimensional model, that is, an area of the support model where the support reinforcement patch is located, where the area may be located at the parting position.

Before the above steps, the three-dimensional model may be cut by using a transverse plane, and a part of the model that needs to be designed with the support reinforcing sheet is reserved, so as to intersect with the parting cutting body to obtain the strip-shaped reinforcing body.

The stiffening region may then be further defined based on the brace port information. I.e. the area where the brace reinforcement tabs are connected. In this embodiment, the support reinforcing tab may be connected to the position of the vertical beam at the parting die of the support corresponding to the cross beam. As can be seen from the previous embodiments, the beam of the brace is associated with the brace port, and therefore the stiffening region can be determined further based on at least one brace port information. Specifically, the block corresponding to the cross beam at the port, such as the arm port and the finger port, is intersected with the long reinforcing body to obtain the initial reinforcing model. In other embodiments, the cross beam further includes a cross beam with a middle support, and then the block corresponding to the cross beam with the middle support may be used to intersect the elongated reinforcement, so as to obtain an initial reinforcement model. Since the beams are spaced apart from each other, the resulting initial reinforcing pattern may be composed of several sections spaced apart from each other. The block corresponding to each beam may be generated in the same manner as in the foregoing embodiment, and will not be described herein.

The brace reinforcement patch in this embodiment may be composed of multiple groups, each group may include two groups stacked and staggered, so that the initial reinforcement model composed of several parts obtained in the previous step needs to be further processed, i.e. the reinforcement area, to obtain a corresponding number of groups of reinforcement patch models. Specifically, the reinforcing region can be further processed by using the parting curved surface to obtain support reinforcing information.

In this embodiment, the width of each reinforcing piece set may be smaller than the width of the strip-shaped parting-die cutting body and larger than half of the width of the parting-die cutting body; and the thickness can be less than the thickness of the support model at the parting die and greater than half the thickness of the support model at the parting die. When the initial reinforcing model is processed, the initial reinforcing model can generate corresponding thickness according to the requirement, the split curved surface can be properly offset, and then the split curved surface is intersected with the initial reinforcing model to obtain the reinforcing model with corresponding width.

Further, after the reinforcement model is obtained, splicing can be performed based on the support model after mold separation, so that support reinforcement information is generated.

Furthermore, the brace modeling parameters for other body part braces may then be obtained based on feature points of the corresponding body part. For example, for an elbow joint brace, marking left and right condyles and olecranon marking points, automatically placing a three-dimensional model according to a required direction, obtaining a circular cutting curve of the three-dimensional model, obtaining an approximate center line of the three-dimensional model based on the circular cutting curve, cutting, hollowing and determining a fitting installation position of the three-dimensional model based on the approximate center line; for the ankle brace, modeling can be performed based on characteristic points such as internal and external ankle apophysis, toe apophysis and calcaneus; for knee joint brace, modeling can be performed based on marking points such as medial and lateral condyles, patellar apophysis, apophysis near other knee joint articular surfaces, and the like; for the neck protection support, the support port is generated by cutting with a three-dimensional model, the integral parting line segmentation support of a sagittal plane or a coronal plane is generated, and the installation position of the assembly is determined based on the mandibular bone nearby apophysis feature points, the collarbone shoulder nearby apophysis feature points, the neck upper cutting curve and the lower cutting curve, which are near the mandibular triangle, the mandibular head feature points, the mandibular angle apophysis feature points and the like; for the thoracolumbar fixing support, the support port cutting surface and the three-dimensional model can be generated based on characteristic points such as shoulder, armpit, hip bone and the like to cut, hollowed out, determine the fitting installation position and the like.

In summary, according to the embodiment of the application, the three-dimensional model of the limb target part is obtained, the feature mark points of the three-dimensional model are determined, so that the modeling parameters of the support of the three-dimensional model are determined according to the feature mark points, support file information corresponding to the target part can be generated based on the modeling parameters of the support, automatic modeling of the support can be realized, and the support for fixing the target limb can be generated by utilizing the support file information. The brace modeling mode is based on the anatomical features of the body part of the patient and is designed according to the feature mark points on the skin data of the patient, and compared with the traditional mode of purely designing according to experience, the brace modeling mode is more accurate, and the matching degree of the obtained brace model and the limbs of the patient is higher; in addition, the method can solve the problems that the existing automatic generation design flow design support file information can only be subjected to simple model cutting operation and cannot be really applied to complex support design, and realize a support modeling method customized according to a three-dimensional model of a limb of a patient, so that the design time of support manufacturing can be effectively reduced, and the support design cost is reduced.

Accordingly, the present application also provides a brace modeling system, which in an embodiment may include a three-dimensional model acquisition module, a feature marker point determination module, a brace modeling parameter determination module, and a brace file information generation module.

The three-dimensional model acquisition module is used for acquiring a three-dimensional model of a limb target part; the feature mark point determining module is used for determining feature mark points of the three-dimensional model; the support modeling parameter determining module is used for determining support modeling parameters of the three-dimensional model according to the feature mark points; the support file information generation module is used for generating support file information corresponding to the target part based on support modeling parameters.

Optionally, the feature-marker-point determining module includes a feature recognition unit, and/or a feature-marker-point determining unit. The feature recognition unit is used for recognizing feature mark points of the three-dimensional model to obtain at least one feature mark point. The feature marker point determination unit is configured to determine at least one feature marker point in accordance with a marker operation submitted on the three-dimensional model.

Optionally, the three-dimensional model acquisition module includes an image acquisition unit and a reverse modeling unit. The image acquisition unit is used for acquiring an image of the target part based on shooting of the image pickup equipment. And the reverse modeling unit is used for carrying out reverse modeling processing on the image to obtain the three-dimensional model.

It should be noted that, the brace modeling system in this embodiment can implement the brace modeling method in the foregoing embodiments of the present application, and the detailed description thereof will be omitted herein.

As shown in fig. 20, the embodiment of the present application provides an electronic device, which includes a processor 121, a communication interface 122, a memory 123, and a communication bus 124, where the processor 121, the communication interface 122, and the memory 123 complete communication with each other through the communication bus 124, and the memory 123 is used to store a computer program; the processor 121 is configured to implement the steps of the brace modeling method provided in any one of the foregoing method embodiments when executing the program stored in the memory 123.

The present application also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the brace modeling method provided by any of the method embodiments described above.

Further, the embodiment of the application also provides a manufacturing method of the support, which comprises the following steps: 3D printing is carried out according to the support file information to obtain the target limb fixing support, wherein the support file information is obtained by modeling by adopting the support modeling method provided by any one of the method embodiments. The 3D printing may refer to photo-curing 3D printing, such as SLA, DLP, LCD, or may not be limited to photo-curing 3D printing, which is not particularly limited in the embodiment of the present application.

As an example of the application, the method for modeling a brace provided by the application embodiment can be applied, the brace model is automatically generated by positioning key points such as bone protruding points in a three-dimensional model, brace port information is obtained, the size area of brace hollows, the brace segmentation mode and the installation of key assembly structure can be defined through the sizes and structures of bone protruding positions and anatomies, brace hollowness information, brace parting mode information and brace assembly information are obtained, then the brace hollowness information, brace parting mode information, brace assembly information and brace port information can be used as brace modeling parameters, brace file information is generated by using the brace modeling parameters, the method for modeling a brace according to a patient limb three-dimensional model is realized, so that the brace for fixing the patient limb is generated by using the brace file information later, the intelligent degree of the brace automatic generation flow is far higher than that of the currently known hand fixing brace generation flow, the design time and the design cost of brace manufacturing are effectively reduced, the requirement on a user is low, the brace can only be printed in a very short time, the problem that the existing training model can not be generated in a 3D can be really achieved by using the brace model for 3, and the existing training model can be truly printed in a short time, and the problem can be solved.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. For system, device, storage medium embodiments, the description is relatively simple as it is substantially similar to method embodiments, with reference to the section of the description of method embodiments being relevant. Relational terms such as "first" and "second", and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of brace modeling, the method comprising:

acquiring a three-dimensional model of a limb target part;

determining feature mark points of the three-dimensional model;

determining a support modeling parameter of the three-dimensional model according to the feature mark points;

and generating the support file information corresponding to the target part based on the support modeling parameters.

2. The method of claim 1, wherein the determining feature marker points of the three-dimensional model comprises:

performing feature recognition on the three-dimensional model to obtain the feature mark points; and/or the number of the groups of groups,

and determining the characteristic marking point according to marking operation submitted on the three-dimensional model.

3. The method of claim 1, wherein the brace modeling parameters include at least one brace port information, the determining the brace modeling parameters of the three-dimensional model from the feature-marker points comprising:

determining at least one port cutting surface corresponding to the at least one support port information according to the characteristic mark points;

and cutting the three-dimensional model by using the at least one port cutting surface to obtain the at least one support port information.

4. A method according to claim 3, wherein the feature-marked points comprise an ulna-bone and a radius-bone protrusion, the at least one brace port information comprises arm port information, and the determining at least one port-cut surface corresponding to the at least one brace port information from the feature-marked points comprises:

determining an arm extension line according to the ulna and radius apophysis points;

and generating an arm port cutting surface based on the arm extension line.

5. The method of claim 3, wherein the feature-marker points comprise a phalangeal, a mid-phalangeal, and a little-phalangeal point, the at least one brace port information comprises finger port information, and the determining at least one port-cut surface corresponding to the at least one brace port information from the feature-marker points comprises:

And determining a finger port cutting surface according to the index phalangeal protruding point, the middle phalangeal protruding point and the small phalangeal protruding point.

6. The method of claim 5, wherein said cutting the three-dimensional model with the at least one port cut surface to obtain the at least one brace port information comprises:

and cutting the three-dimensional model by using the finger port cutting surface to obtain finger port information corresponding to four fingers and tiger port initial information corresponding to thumbs.

7. The method of claim 6, wherein the feature marker points further comprise at least one of a radius and ulna protrusion and at least one of an index finger, middle and little finger protrusion;

the at least one brace port information includes tiger port information, and the determining at least one port cutting surface corresponding to the at least one brace port information according to the feature mark point includes:

determining a tiger mouth port cutting surface based on at least one of the radius and ulna protruding points, at least one of the index, middle and little phalangeal protruding points, finger port information and tiger mouth port initial information.

8. The method of claim 3, wherein the brace modeling parameters further comprise at least one port cuff information, the determining the brace modeling parameters of the three-dimensional model from the feature-marker points comprising:

determining a port flanging starting line and a port flanging ending line according to at least one support port information, wherein the support port information comprises arm port information, finger port information and tiger port information, and the port flanging ending line is positioned at the periphery of the corresponding port flanging starting line;

and connecting the port flanging starting line with the corresponding port flanging ending line by a curved surface to obtain the corresponding port flanging information.

9. The method of claim 4, wherein the feature marker points comprise a middle phalange point, an ulna point, and a radius point, the brace modeling parameters further comprise an overall parting line, and wherein determining the brace modeling parameters of the three-dimensional model from the feature marker points comprises:

determining an arm center line according to the ulna and radius points;

generating a palm center line based on the middle phalangeal point, the ulna point, the radius bone point determination and the arm port information;

And connecting the arm center line and the palm center line to generate the integral parting line.

10. The method of claim 4, wherein the feature-marker points include a middle phalange point, an ulna point, and a radius point, the brace modeling parameters further include an overall parting line, and the determining the brace modeling parameters of the three-dimensional model from the feature-marker points includes:

obtaining an arm extension line based on the ulna protruding point and the radius protruding point, and determining the arm center line according to the arm extension line;

determining a target plane passing through the middle phalangeal point according to the middle phalangeal point, the ulna point and the radius point;

determining a finger center point based on the target plane and the finger port information;

connecting the finger center point with the distal end of the arm center line to obtain the palm center line;

11. The method according to claim 9 or 10, wherein the brace modeling parameters include brace hollowed-out information, and the determining the brace modeling parameters of the three-dimensional model according to the feature marker points includes:

And carrying out hollowed-out cutting treatment on the three-dimensional model based on the integral parting line and at least one brace port information to obtain brace hollowed-out information.

12. The method of claim 11, wherein the wheel signature points comprise at least one of ulna and radius bone points, the model hollowed-out cutting process is performed on the three-dimensional model based on the integral parting line and at least one brace port information to obtain the brace hollowed-out information, comprising:

creating a box body model capable of wrapping the three-dimensional model;

generating a cutting block according to the integral parting line and the at least one brace port information;

cutting the box body model by using the cutting block to obtain a cutting residual block;

and carrying out hollowed-out cutting on the three-dimensional model by utilizing the residual cutting blocks to obtain the hollowed-out information of the support.

13. The method of claim 12, wherein said cutting the box model with the cut blocks results in cut remaining blocks, comprising:

rotating the cutting block body by a preset rotation angle, and cutting the box body model based on the rotated cutting block body to obtain a cutting residual block body; or (b)

The method for carrying out hollowed-out cutting on the three-dimensional model by utilizing the residual cutting blocks to obtain the support hollowed-out information comprises the following steps:

and rotating the cutting residual block body by the preset rotation angle, and performing hollowed-out cutting on the three-dimensional model based on the rotated cutting residual block body to obtain the support hollowed-out information.

14. The method of claim 13, wherein the brace modeling parameters further comprise brace modeling information, the determining the brace modeling parameters of the three-dimensional model from the feature-marker points further comprising:

generating a molding curved surface according to the integral parting line;

rotating the die-dividing curved surface by the preset rotation angle to obtain a die-dividing cutting surface;

and cutting the hollowed-out and cut three-dimensional model into two parts based on the die-dividing and cutting surface to obtain the support die-dividing information.

15. The method of claim 9 or 10, wherein the brace modeling parameters further comprise brace conduit information, the determining the brace modeling parameters of the three-dimensional model from the feature-marker points further comprising:

generating a molding curved surface according to the integral parting line;

generating a pipeline intersection line with the three-dimensional model based on the model-separated curved surface;

And performing pipeline generation operation based on the pipeline intersecting line to obtain the brace pipeline information.

16. The method of claim 9 or 10, wherein the brace modeling parameters further comprise brace fitting information, the determining the brace modeling parameters of the three-dimensional model from the feature-marker points further comprising:

determining a parting curved surface based on the integral parting line;

determining an installation intersection line with the three-dimensional model based on the model-separated curved surface;

fitting mounting points are selected from the mounting intersection and the brace fitting information is generated based on the fitting mounting points.

17. The method according to claim 9 or 10, wherein the brace modeling parameters include brace stiffening information, the determining brace modeling parameters of the three-dimensional model from the feature-marker points comprising:

generating a molding curved surface according to the integral parting line;

determining a reinforcing area based on the mold separation curved surface and at least one brace port information;

and processing the reinforcement area based on the parting curved surface to obtain the support reinforcement information.

18. The method of claim 1, wherein obtaining a three-dimensional model of the target site of the limb comprises:

Shooting an image of the target part by using an image shooting device;

and carrying out reverse modeling processing on the image to obtain the three-dimensional model.

19. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;

a memory for storing a computer program;

a processor for implementing the steps of the brace modeling method of any of claims 1-18 when executing a program stored on a memory.

20. A computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the steps of the brace modeling method of any of claims 1-18.

21. A method of making a brace, comprising: 3D printing is performed according to the stent file information to obtain a stent, wherein the stent file information is obtained by the stent modeling method according to any one of claims 1 to 18.