CN113199760A - Cloud system for realizing 3D printing of orthopedic helmet and 3D printing method of orthopedic helmet - Google Patents

Cloud system for realizing 3D printing of orthopedic helmet and 3D printing method of orthopedic helmet Download PDF

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Publication number
CN113199760A
CN113199760A CN202110096107.0A CN202110096107A CN113199760A CN 113199760 A CN113199760 A CN 113199760A CN 202110096107 A CN202110096107 A CN 202110096107A CN 113199760 A CN113199760 A CN 113199760A
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helmet
cloud server
printing
model
shell
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CN113199760B (en
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沈斌
石昭明
刘瑶
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Jiaxing Jiachuangzhi Medical Equipment Co ltd
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Jiaxing Jiachuangzhi Medical Equipment Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)

Abstract

The invention provides a cloud system and a 3D printing method for realizing 3D printing of an orthopedic helmet, wherein the cloud system comprises: the cloud server, and a doctor terminal, an engineer terminal and a 3D printing device which are in communication connection with the cloud server; the doctor terminal transmits the acquired head type data of the patient to the cloud server to match with the corresponding helmet model, and model information of the helmet model is issued to the doctor terminal; the doctor terminal uploads a first confirmation instruction for confirming the model information to the cloud server; the cloud server generates a 3D printing path of the helmet model for analog printing based on the first confirmation instruction, and obtains an analog printing result and sends the analog printing result to the engineer terminal; the engineer terminal uploads a second confirmation instruction for confirming the simulation printing result to the cloud server; and the cloud server controls the 3D printing equipment to print according to the 3D printing path to obtain the orthopedic helmet. The 3D printing equipment is controlled by the cloud server to print the orthopedic helmet, so that the rapid collaborative preparation of the orthopedic helmet is realized.

Description

Cloud system for realizing 3D printing of orthopedic helmet and 3D printing method of orthopedic helmet
Technical Field
The application belongs to the technical field of medical orthopedic product preparation, and particularly relates to a cloud system for realizing 3D printing of an orthopedic helmet and a 3D printing method of the orthopedic helmet.
Background
The blunt head syndrome has a high incidence rate in newborns, and is divided into the closed blunt head syndrome of the bone seam and the non-closed blunt head syndrome of the bone seam, and for the closed blunt head syndrome of the bone seam, the surgical treatment and the helmet orthopedic treatment are generally adopted at the same time.
In the case of helmet orthopaedic therapy, all orthopaedic helmets for the flathead syndrome must be individually customised, since each infant patient's head has a unique geometry. The existing manufacturing process of the oblate head syndrome orthopedic helmet comprises the following steps: acquiring a head geometry of a patient with a 3D laser scanner; using computer software, the orthopedic technician modifies the scanning to obtain an ideal geometric shape; processing the foam material according to the ideal geometric shape to obtain a male die of the helmet; thermoplastically forming a helmet blank on the male die; and (4) carrying out trimming, drilling, polishing and other treatments on the helmet blank to obtain the helmet shell.
Because the heads of the patients have uniqueness, each patient needs to prepare a male die, the male die only needs one week, and the waiting time is longer due to the preparation and treatment time of the helmet shell and the like; meanwhile, the correction modification of an orthopedic technician and the process flow of forming the helmet blank first and then processing increase the complexity of the preparation process; the helmet cannot be quickly and conveniently prepared to correct the head of a patient.
Disclosure of Invention
In view of this, an object of the present application is to provide a cloud system and an orthopedic helmet 3D printing method for implementing orthopedic helmet 3D printing, the cloud system controls a 3D printing device to print an orthopedic helmet, so that a preparation process of the orthopedic helmet is simplified, preparation time is saved, the helmet can be quickly and conveniently prepared, and the head of a patient can be immediately orthopedic.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a cloud system for implementing orthopedic helmet 3D printing, the cloud system comprising a cloud server, and a doctor terminal, an engineer terminal and a 3D printing device communicatively connected with the cloud server; wherein the content of the first and second substances,
the doctor terminal transmits the acquired head type data of the patient to the cloud server;
the cloud server matches a helmet model corresponding to the patient head type data, and model information of the helmet model is sent to the doctor terminal;
the doctor terminal receives a first confirmation instruction for confirming the model information and uploads the first confirmation instruction to the cloud server;
the cloud server generates a 3D printing path of the helmet model based on the first confirmation instruction, performs simulated printing based on the 3D printing path, and generates a simulated printing result to be issued to an engineer terminal;
the engineer terminal receives a second confirmation instruction for confirming the simulation printing result and uploads the second confirmation instruction to the cloud server;
and after receiving the second confirmation instruction, the cloud server controls the 3D printing device to print according to the 3D printing path to obtain the orthopedic helmet, wherein the orthopedic helmet comprises an outer shell and a lining, and the outer shell and the lining are detachably printed into a whole through concave-convex matching.
Preferably, the 3D printing path includes an outer shell and an inner liner 3D printing path, the cloud server separates an outer shell model and an inner liner model from the helmet model after receiving the first confirmation instruction, performs layering processing on the outer shell model and the inner liner model to obtain an outer shell cross-sectional pattern and an inner liner cross-sectional pattern of each layer, and plans the outer shell and the inner liner 3D printing path of each layer based on the outer shell cross-sectional pattern and the inner liner cross-sectional pattern of each layer, wherein the outer shell cross-sectional pattern includes lines corresponding to an outer wall structure and lines corresponding to an inner wall structure, a filling space is formed between the outer wall structure and the inner wall structure, the filling space is filled with a wave-shaped filling structure, a plurality of longitudinally arranged protrusions are further formed on the inner side of the outer shell of the orthopedic helmet, and a joining groove is formed between adjacent protrusions, the lining cross-section pattern comprises lines corresponding to the lining body, the inner side of the lining body is smooth, and a plurality of longitudinally-arranged joint bulges protrude outwards from the lining body;
the cloud server further determines shell physical data corresponding to the shell model according to the shell section pattern, performs area division on the shell model based on finite element analysis, determines stress information of each divided area, and determines printing parameters of each area according to the shell physical data and the stress information so as to control the 3D printing equipment to print based on the 3D printing path and the printing parameters.
Preferably, the cloud system further comprises a patient terminal, wherein the patient terminal is in communication connection with the cloud server;
the patient terminal feeds back feedback information using the orthopedic helmet to the cloud server, and the cloud server receives the feedback information and sends the feedback information to the doctor terminal;
the doctor terminal receives correction data for correcting the patient head type data based on the feedback data and uploads the correction data to the cloud server; the cloud server performs a step of matching a helmet model corresponding to the patient head model data based on the correction data.
Preferably, the cloud server issues a helmet model corresponding to the helmet model to the patient terminal, and the patient terminal sends a helmet model selection instruction to the cloud server based on the helmet model.
Preferably, in the process that the engineer terminal receives the printing of the orthopedic helmet, the cloud server sends warning information, and sends a debugging request to the cloud server according to the warning information, so as to check for an abnormality corresponding to the warning information.
The invention also provides a 3D printing method of the orthopedic helmet based on the cloud system, wherein the cloud system comprises a cloud server, and a doctor terminal, an engineer terminal and 3D printing equipment which are in communication connection with the cloud server;
the orthopedic helmet 3D printing method comprises the following steps:
s100, the doctor terminal transmits the collected head type data of the patient to the cloud server;
s200, the cloud server matches a helmet model corresponding to the patient head type data and issues model information of the helmet model to the doctor terminal;
s300, the doctor terminal receives a first confirmation instruction for confirming the model information and uploads the first confirmation instruction to the cloud server;
s400, the cloud server generates a 3D printing path of the helmet model based on the first confirmation instruction, performs simulated printing based on the 3D printing path, and generates a simulated printing result to be issued to an engineer terminal;
s500, the engineer terminal receives a second confirmation instruction for confirming the simulation printing result and uploads the second confirmation instruction to the cloud server;
s600, after receiving the second confirmation instruction, the cloud server controls the 3D printer to print the helmet according to the 3D printing path to obtain the orthopedic helmet, wherein the orthopedic helmet comprises an outer shell and a lining, and the outer shell and the lining are detachably printed into a whole through concave-convex matching.
Preferably, the 3D printing path includes an outer shell and an inner liner 3D printing path, and in the step S400:
after receiving the first confirmation instruction, the cloud server separates a shell model and a lining model from the helmet model, performs layering processing on the shell model and the lining model to obtain a shell section pattern and a lining section pattern of each layer, and plans a shell and lining 3D printing path of each layer based on the shell section pattern and the lining section pattern of each layer, wherein the shell section pattern comprises a line corresponding to an outer wall structure and a line corresponding to an inner wall structure, a filling space is formed between the outer wall structure and the inner wall structure, the filling space is filled with a wave-shaped filling structure, a plurality of longitudinally-arranged protrusions are further formed on the inner wall of the shell of the orthopedic helmet inwards, a joint groove is formed between adjacent protrusions, the lining section pattern comprises a line corresponding to a lining body, and the inner side of the lining body is smooth, the gasket body protrudes outwards with a plurality of longitudinally arranged engaging protrusions;
the cloud server further determines shell physical data corresponding to the shell model according to the shell section pattern, performs area division on the shell model based on finite element analysis, determines stress information of each divided area, and determines printing parameters of each area according to the shell physical data and the stress information so as to control the 3D printing equipment to print based on the 3D printing path and the printing parameters.
Preferably, the cloud system further includes a patient terminal, the patient terminal is in communication connection with the cloud server, and after the step S600, the method further includes:
the patient terminal feeds back feedback information using the orthopedic helmet to the cloud server, and the cloud server receives the feedback information and sends the feedback information to the doctor terminal;
the doctor terminal receives correction data for correcting the patient head type data based on the feedback data and uploads the correction data to the cloud server; the cloud server performs a step of matching a helmet model corresponding to the patient head model data based on the correction data.
Preferably, after the step S200, the method further comprises:
the cloud server issues the helmet model corresponding to the helmet model to the patient terminal, and the patient terminal sends a helmet model selection instruction to the cloud server based on the helmet model.
Preferably, in the step S600:
and the engineer terminal sends warning information in the process of receiving the printing of the orthopedic helmet, and sends a debugging request to the cloud server according to the warning information so as to check the abnormity corresponding to the warning information.
The invention has the beneficial effects that:
the cloud system for realizing the 3D printing of the orthopedic helmet comprises a cloud server, and a doctor terminal, an engineer terminal and a 3D printing device which are in communication connection with the cloud server. When the orthopedic helmet is prepared, firstly, a doctor terminal collects head type data of a patient, and transmits the collected head type data of the patient to a cloud server; matching, by the cloud server, a helmet model corresponding to the patient head type data, and issuing model information of the matched helmet model to the doctor terminal; after receiving a first confirmation instruction for confirming the model information, the doctor terminal uploads the first confirmation instruction to the cloud server; generating a 3D printing path of the helmet model by the cloud server, performing simulated printing according to the 3D printing path, and generating a simulated printing result and issuing the simulated printing result to the engineer terminal; and then, the engineer terminal uploads a received second confirmation instruction for confirming the simulation printing result to the cloud server, the cloud server controls the 3D printing equipment to print according to the 3D printing path to obtain a detachable structure comprising an outer shell and an inner lining, the outer shell and the inner lining are matched into the detachable structure through a dovetail groove or a T-shaped groove in a concave-convex mode, and the orthopedic helmet is integrally formed during printing. Therefore, the 3D printing equipment is controlled by the cloud server in the cloud system to print the orthopedic helmet, so that the process flows of preparing a male die, performing orthopedic modification, forming a helmet blank first and then processing are avoided, the preparation period of the orthopedic helmet is shortened, the preparation process flow is simplified, and the rapid and convenient helmet preparation for reshaping the head of the patient is realized.
Drawings
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure:
fig. 1 is a schematic diagram of a cloud system architecture for implementing 3D printing of an orthopedic helmet in an embodiment of the present invention;
fig. 2 is an exploded schematic view of the plastic shell and silicone pad of an orthopedic helmet in an embodiment of the present invention;
FIG. 3 is a schematic representation of the cross-sectional pattern of the outer shell and the cross-sectional pattern of the inner liner in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a cross-sectional pattern of an outer shell and a cross-sectional pattern of an inner liner according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating various parameters involved in presetting a formula according to an embodiment of the present invention;
fig. 6 is a flowchart of a cloud system-based orthopedic helmet 3D printing method according to an embodiment of the present invention.
Detailed Description
It should be noted that step numbers (letter or number numbers) are used to refer to some specific method steps in the present invention only for the purpose of convenience and brevity of description, and the order of the method steps is not limited by letters or numbers in any way. It will be clear to a person skilled in the art that the order of the steps of the method in question, as determined by the technology itself, should not be unduly limited by the presence of step numbers.
The invention provides a cloud system for enabling orthopedic helmet 3D printing. Referring to fig. 1, the cloud system includes a cloud server 1, and a doctor terminal 2, an engineer terminal 3, and a 3D printing device 4 communicatively connected to the cloud server 1; wherein the content of the first and second substances,
the doctor terminal 2 transmits the acquired head type data of the patient to the cloud server 1;
the cloud server 1 matches a helmet model corresponding to the patient head type data, and issues model information of the helmet model to the doctor terminal 2;
the doctor terminal 2 receives a first confirmation instruction for confirming the model information, and uploads the first confirmation instruction to the cloud server 1;
the cloud server 1 generates a 3D printing path of the helmet model based on the first confirmation instruction, performs simulated printing based on the 3D printing path, generates a simulated printing result and sends the simulated printing result to the engineer terminal 3;
the engineer terminal 3 receives a second confirmation instruction for confirming the simulation printing result, and uploads the second confirmation instruction to the cloud server 1;
after receiving the second confirmation instruction, the cloud server 1 controls the 3D printing device 4 to print according to the 3D printing path, so as to obtain an orthopedic helmet, where the orthopedic helmet includes an outer shell and an inner liner, and the outer shell and the inner liner are detachably printed into a whole through concave-convex matching.
The embodiment provides a cloud system for realizing 3D printing of an orthopedic helmet, and the cloud system comprises a cloud server 1, and a doctor terminal 2, an engineer terminal 3 and a 3D printing device 4 which are in communication connection with the cloud server 1. When the orthopedic helmet is prepared, the head type data of a patient are collected by the doctor terminal 2, and the collected head type data of the patient are transmitted to the cloud server 1; the cloud server 1 matches a helmet model corresponding to the head type data of the patient, and sends model information of the matched helmet model to the doctor terminal 2; after receiving a first confirmation instruction for confirming the model information, the doctor terminal 2 uploads the first confirmation instruction to the cloud server 1; the cloud server 1 generates a 3D printing path of the helmet model, performs simulated printing according to the 3D printing path, generates a simulated printing result and sends the simulated printing result to the engineer terminal 3; after that, the engineer terminal 3 uploads a received second confirmation instruction for confirming the simulation printing result to the cloud server 1, the cloud server 1 controls the 3D printing device 4 to print according to the 3D printing path, the shell and the lining are obtained and matched into a detachable structure through a dovetail groove or a T-shaped groove in a concave-convex mode, and the orthopedic helmet is integrally formed during printing. Therefore, the cloud server 1 in the cloud system controls the 3D printing device 4 to print the orthopedic helmet, so that the process flows of preparing a male die, performing orthopedic modification, forming a helmet blank first and then processing are avoided, the preparation period of the orthopedic helmet is shortened, the preparation process flow is simplified, and the rapid and convenient helmet preparation for reshaping the head of the patient is realized.
Specifically, fig. 1 illustrates a cloud system architecture of the present embodiment to control 3D printing of an orthopedic helmet for performing head correction on an infant patient with slot closing edgehead syndrome. The cloud system at least comprises a cloud server 1, and a doctor terminal 2, an engineer terminal 3 and a 3D printing device 4 which are in communication connection with the cloud server 1. The cloud server 1 serves as a data processing center, receives various types of data for printing, analyzes the data and controls printing; the doctor terminal 2 is used for interactively uploading scanned head type data of the patient with the cloud server 1 and confirming helmet data; the engineer terminal 3 and the cloud server 1 interactively monitor the printing process and confirm the simulation result; the 3D printing device 4 performs helmet printing after receiving the printing instruction from the cloud server 1.
Further, the doctor terminal 2 is connected with a medical scanning device in a communication mode, the medical scanning device is used for scanning and collecting the head shape of the patient, the obtained head shape data of the patient are transmitted to the doctor terminal 2 to be displayed. After checking and confirming the patient head type data displayed by the doctor terminal 2, the doctor triggers an uploading operation, and uploads the acquired patient head type data to the cloud server 1. The cloud server 1 matches the head type data of the patient, searches for the helmet model corresponding to the head type data, and issues the model information of the matched helmet model to the doctor terminal 2, so that the doctor can confirm whether the helmet model can be used for treating the patient.
The cloud server 1 performs classification training on various types of head type data in advance to obtain head type data classification which can be corrected by using the same orthopedic helmet. Because the head type data under the same type can be corrected by using the same orthopedic helmet, an appropriate orthopedic helmet model is set for each type of head type data. After receiving the head type data of the patient, the cloud server 1 performs similarity calculation on the head type data of the patient and the head type data of each classification in the head type data of the patient to obtain the similarity between each classification head type data and the head type data of the patient. The classification with the highest similarity is the head type data classification to which the head type data of the patient belongs, and the orthopedic helmet model suitable for the head type data classification is the helmet model matched with the head type data of the patient.
Further, the doctor terminal 2 receives and displays the model information issued by the cloud server 1, and the doctor judges whether the helmet model is suitable for correcting the head shape of the patient by checking the model information. If the correction is suitable for correcting the head shape of the patient, a first confirmation instruction is triggered at the doctor terminal 2. The doctor terminal 2 uploads the received first confirmation instruction to the cloud server 1, and the cloud server 1 generates a 3D printing path for printing the helmet model according to the first confirmation instruction. Wherein the orthopedic helmet is a double-layer helmet comprising an outer shell and an inner liner, and the outer shell is preferably formed of plastic, comprises an outer wall and an inner wall, and is used for correcting the head of a patient, and the inner liner is preferably formed of silica gel, comprises a liner body, and has a smooth inner side, so as to be in contact with the head of the patient when being worn. Referring to fig. 2, the plastic shell 10 and the silicone pad 20 shown in fig. 2 respectively form an outer shell and an inner liner of the double-layer helmet. Because the printing materials of the plastic shell 10 and the silica gel pad 20 are different, the printing materials are respectively printed by different printing heads of the 3D printing equipment 4, so that the generated 3D printing paths are respectively different for the plastic shell 10 and the silica gel pad 20; however, in the embodiment, the two types of the orthopedic helmets are printed alternately to form the final embedded and assembled orthopedic helmet, so that the outer shell and the inner liner are matched into a detachable structure through a dovetail groove or a T-shaped groove in a concave-convex mode and are printed into a whole, and manual re-assembly is not needed.
On the contrary, if the doctor judges that the matched helmet model is not suitable for correcting the head shape of the patient, a re-matching instruction is triggered at the doctor terminal 2. The doctor terminal 2 uploads the received re-matching instruction to the cloud server 1, and the cloud server 1 matches the corresponding helmet model for the head type data of the patient again. And if the helmet model obtained through multiple matching is judged by a doctor to be unsuitable for correcting the head shape of the patient, the cloud server 1 outputs the head shape data of the patient to the engineer terminal 3 so that the engineer can design the helmet model matched with the head shape data of the patient and upload the helmet model to the cloud server 1. The cloud server 1 issues the model information of the helmet model to the doctor terminal 2, so that a doctor can determine whether the helmet model is suitable for correcting the head of the patient.
Further, in order to ensure accurate printing of the orthopedic helmet, an analog printing mechanism is provided in the cloud server 1. And performing model printing according to the generated 3D printing path, generating a simulation printing result and issuing the simulation printing result to the engineer terminal 3, checking whether the simulation printing result is consistent with the helmet model by the engineer, and triggering a second confirmation instruction at the engineer terminal 3 if the simulation printing result is consistent with the helmet model. The engineer terminal 3 uploads the received second confirmation instruction to the cloud server 1, and after receiving the second confirmation instruction, the cloud server 1 controls the 3D printing device 4 to print according to the 3D printing path, so as to obtain the orthopedic helmet for correcting the head shape of the patient.
Further, the present embodiment takes, as the housing 3D printing path included in the 3D printing path, a path for printing the plastic housing 10 in the 3D printing path; and a path for printing the silicone pad 20 in the 3D printing path is used as a lining 3D printing path included in the 3D printing path.
After receiving the first confirmation instruction, the cloud server 1 separates a shell model and a liner model from the helmet model, performs layering processing on the shell model and the liner model to obtain a shell cross-sectional pattern 100 and a liner cross-sectional pattern 200 shown in fig. 3 for each layer, and plans a shell and liner 3D printing path for each layer based on the shell cross-sectional pattern 100 and the liner cross-sectional pattern 200 for each layer, where, referring to fig. 4, the shell cross-sectional pattern 100 includes lines corresponding to an outer wall structure 101 and lines corresponding to an inner wall structure 102, a filling space is formed between the outer wall structure 101 and the inner wall structure 102, the filling space is filled with a wave-shaped filling structure 103, a plurality of protrusions 104 arranged longitudinally to the inner side of the shell of the orthopedic helmet are further formed, and a joining groove is formed between adjacent protrusions 104, the lining cross-section pattern 200 comprises lines corresponding to a lining body, the inner side of the lining body is smooth, and a plurality of longitudinally arranged joint protrusions 202 protrude outwards from the lining body;
the cloud server 1 further determines shell physical data corresponding to the shell model according to the shell section pattern, performs area division on the shell model based on finite element analysis, determines stress information of each divided area, and determines printing parameters of each area according to the shell physical data and the stress information so as to control the 3D printing device 4 to print based on the 3D printing path and the printing parameters.
Further, after receiving the first confirmation instruction, the cloud server 1 splits the plastic shell 10 and the silicon rubber pad 20 included in the double-layer helmet model, and separates the plastic shell 10 and the silicon rubber pad 20 from the double-layer helmet model to serve as a shell model and a lining model, respectively. After that, the shell model and the lining model are layered separately to obtain a shell cross-sectional pattern 100 and a lining cross-sectional pattern 200 for each layer. In order to form a detachable structure with a dovetail groove or a T-shaped groove in concave-convex fit between the outer shell and the inner lining of the double-layer helmet, a plurality of longitudinally arranged protrusions 104 are formed on the inner side of the inner wall of the outer shell, and engaging grooves are formed between the adjacent protrusions 104; meanwhile, the inner side of the liner body of the liner is smooth, and a plurality of longitudinally arranged engaging protrusions 202 are arranged on the outer side of the outward non-contact head part of the liner body in a protruding mode, so that the engaging grooves and the engaging protrusions 202 are matched to form a detachable structure. Thus, the shell cross-sectional pattern 100 of the present embodiment includes a line pattern of the components of the shell, and the liner cross-sectional pattern 200 includes a line pattern of the components of the liner. Referring to fig. 4, the cross-sectional pattern 100 of the housing at least includes a line corresponding to the housing structure 105 and a line corresponding to the protrusion 104, and the line corresponding to the housing structure 105 includes a line corresponding to the outer wall structure 101 and a line corresponding to the inner wall structure 102. By constructing the path of the outer wall structure 101, the inner wall structure 102 and the protrusion 104 for each layer, a respective corresponding housing 3D printing path for each layer is formed. The lining cross-section pattern 200 at least comprises lines corresponding to the lining body structure 201 and lines corresponding to the joint protrusions 202, so that a 3D printing path of the lining corresponding to each layer is formed.
Understandably, the head of the patient is divided into an orthopedic area and a non-orthopedic area, which correspond to the orthopedic helmet, and the orthopedic helmet is also divided into an orthopedic area and a non-orthopedic area, when the patient is corrected, the orthopedic area of the head of the patient corresponds to the orthopedic area of the orthopedic helmet, so that the force applied to the head of the patient on the orthopedic area of the orthopedic helmet is large, and in order to ensure the correcting effect, the deformation of the orthopedic area of the orthopedic helmet is controlled within a specified range, and the deformation is generally controlled within 2 mm. To achieve this, it is desirable to increase the stiffness of the orthopedic region of the orthopedic helmet, i.e., to increase the stiffness of the plastic shell 10 at the orthopedic region of the orthopedic helmet. Under the condition that the thicknesses of the outer wall structure 101 and the inner wall structure 102 are constant, the rigidity of the plastic shell 10 is mainly realized by arranging the wavy filling structure 103 in the filling space formed between the outer wall structure 101 and the inner wall structure 102, and the wavy filling structure 103 is connected with the outer wall structure 101 and the inner wall structure 102, so that the outer wall structure 101, the filling structure 103 and the inner wall structure 102 form a whole, the rigidity of the plastic shell 10 structure is enhanced, and the rigidity of the whole plastic shell 10 is further enhanced.
Further, the filling structure 103 located between the outer wall structure 101 and the inner wall structure 102 is also formed by printing, and the cross-sectional pattern of the shell obtained by layering the shell model includes the pattern of the filling structure 103, and the pattern is wave-shaped. Therefore, when the paths constituting each of the outer wall structure 101, the inner wall structure 102, and the projection 104 are formed as the respective outer shell 3D printing paths for each layer, the undulations in the cross-sectional pattern of each outer shell are also added to the outer shell 3D printing paths, forming a complete outer shell 3D printing path.
Further, the wavy filling structure 103 changes the stiffness of the plastic housing 10 by changing the length of the printing period thereof, and the changes in length and stiffness are inversely proportional, i.e., the stiffness of the plastic housing 10 decreases as the period of the wavy shape increases. In the embodiment, the period is taken as one of the printing parameters, and the period is obtained by analyzing the shell physical data and the stress information of the shell model. Specifically, the cloud server 1 determines the shell physical data of the shell model according to the shell cross-sectional pattern obtained by layering, where the determined shell physical data includes the thickness of the outer wall structure 101, the thickness of the inner wall mechanism 102, and the thickness of the shell structure 105. The thickness of the shell structure 105 is the total thickness of the structure body composed of the outer wall structure 101 and the inner wall structure 102 in the shell cross-sectional pattern, and is determined by the thickness information of the shell structure 105 included in the shell cross-sectional pattern. The thickness information of the outer wall structure 101 and the thickness information of the inner wall structure 102 may be determined according to parameters of the 3D printing apparatus 4, for example, set to be an integral multiple, preferably one, of the diameter of the material ejected by the print head.
Considering that the stress information of all places in the orthopedic area is not completely the same, the orthopedic area can be further subdivided according to the stress magnitude, and the wave-shaped period in each subdivided area is determined according to the maximum stress information. Specifically, the helmet model and the data of the head type of the patient are combined to simulate the situation that the helmet model is worn on the head of the patient, a stress model is formed, finite element analysis is carried out on the stress model, and stress analysis diagrams of all parts of the helmet model are obtained. And then, carrying out region division on the helmet model according to the stress difference reflected by the stress analysis diagram to obtain stress information of each region.
Further, the cloud server 1 combines the thickness of the outer wall structure 101, the thickness of the inner wall mechanism 102, and the thickness of the outer wall structure 105 in the physical data of the shell with the stress information of each region, and determines the printing parameters such as the period of the wave shape, the interference amount, and the like in each region; and controlling the 3D printing device 4 to accurately print the orthopedic helmet in combination with the 3D printing path. Wherein, the interference amount is the distance between the peak point of the wave-shaped wave crest and the central line of the outer wall structure 101, or the distance between the valley point of the wave-shaped wave trough and the central line of the inner wall structure 102; the peak point is the middle point of the wave crest, and the valley point is the middle point of the wave trough. Referring to fig. 5, the printing parameters including the period and the interference amount may be calculated and determined by a preset formula, and the preset formula is preferably the following formula (1):
E*(x)/E＝0.9+2.7W-0.15T-0.3P+2.0I+0.009T2-12.3I2-0.2WT+0.8PI (1)
wherein: e*(x) and/E is the rigidity value of a region of the plastic shell 10 (represented by stress information of the region), W is the thickness of the outer wall structure 101 and the inner wall structure 102, T is the thickness of the outer shell structure 105 in the region, P is the wave-shaped period, and I is the interference quantity.
Wherein: the value interval of W is [0.5,1] in mm;
the value interval of T is [4,15] in mm;
the value interval of P is [0,10] in mm;
the value interval of I is [0.05,0.4] and unit mm.
For a certain area, its stiffness value E*(x) E is a predetermined value, shell nodeThe thickness T of the structure 105 and the thickness W of the outer wall structure 101 and the inner wall structure 102 are also known, and thus equation (1) can be converted to equation (2):
0＝-0.3P+2.0I-12.3I2+0.8PI+C (2)
wherein C is a known number.
Then, a curve graph with I as the abscissa and P as the ordinate can be drawn according to the formula (2), and then a maximum value of P is selected in the value range according to the value range of I (of course, P should also conform to the value range), so as to determine the specific values of P and I.
Since the value range of I is small, I has small influence on the amplitude of the wave shape, and P directly influences the total length of the printing path of the filling structure 103, so that the quality of the helmet is directly influenced, in short, the larger P is, the lighter the helmet is but the smaller the rigidity of the helmet is, and the appropriate wave shape can be obtained by the formula (1). The printing parameters formed by the numerical values are combined with the 3D printing path, the printing equipment is controlled to print, the orthopedic helmet for accurately correcting the head shape of the patient can be printed, the weight of the helmet is reduced as far as possible while the requirement for rigidity design is met, and the purpose of protecting the patient to the maximum extent is achieved.
Furthermore, the cloud system of the embodiment further includes a patient terminal 5, and the patient terminal 5 is in communication connection with the cloud server 1;
the patient terminal 5 feeds back feedback information using the orthopedic helmet to the cloud server 1, and the cloud server 1 receives the feedback information and sends the feedback information to the doctor terminal 2;
the doctor terminal 2 receives correction data for correcting the patient head shape data based on the feedback data, and uploads the correction data to the cloud server 1; the cloud server 1 performs a step of matching a helmet model corresponding to the patient head model data based on the correction data.
The cloud system of the present embodiment may further access a patient terminal 5 communicatively connected to the cloud server 1, in addition to the cloud server 1, the doctor terminal 2, the engineer terminal 3, and the 3D printing device 4. The patient terminal 5 is used for feeding back wearing feeling or wearing problems in the wearing process of the orthopedic helmet to the cloud server 1 so as to improve and optimize the orthopedic helmet or answer the wearing problems when the wearing feeling is poor, and the use of the orthopedic helmet for a patient is facilitated.
Specifically, while the infant wears the helmet to correct the head shape, the infant family observes the head shape and the infant state of the infant, and feeds back the existing question or the state feeling to the cloud server 1 through the patient terminal 5 as feedback information for using the orthopedic helmet. The cloud service issues the received feedback information to the doctor terminal 2, and the feedback information is displayed by the doctor terminal 2 for the doctor to check. The doctor judges whether the state feeling embodied by the feedback information belongs to normal feeling, if the state feeling belongs to normal feeling, normal reply information is returned to the cloud server 1, and the cloud server 1 issues the reply information to the patient terminal 5. Or the doctor answers the questions in the feedback information to form reply information, the reply information is uploaded to the cloud server 1, and the reply information is sent to the patient terminal 5 by the cloud server 1 to solve the questions.
Further, if the feedback data fed back from the patient terminal 5 is determined by the doctor to be abnormal data, the abnormality such as improper division of the orthopedic region and the non-orthopedic region, failure to achieve the corrective effect, or over-correction is detected. At this time, the patient head shape data needs to be corrected. Specifically, the patient head shape data is newly acquired by the medical scanning apparatus, and transmitted to the doctor terminal 2 as correction data for correcting the patient head shape data that was initially acquired. The doctor terminal 2 uploads the received correction data to the cloud server 1, the cloud server 1 corrects the initial patient head shape data according to the correction data, and the corrected patient head shape data is matched with the corresponding helmet model, so that the 3D printing path is generated, and the orthopedic helmet is printed again. Wherein the modification of the initial patient head form data may be a replacement of the initial patient head form data with modification data; or comparing the difference between the two, and correcting the initial patient head shape data by the difference, which is not limited specifically.
It should be noted that, in addition to transmitting the feedback information to the cloud server 1, the patient terminal 5 of the present embodiment may also select a type of the helmet model. After matching the helmet model corresponding to the head type data of the patient, the cloud server 1 issues the helmet model of the helmet model to the patient terminal 5, and the helmet model is displayed by the patient terminal 5. And the family members of the patients can select the required helmet style from the displayed helmet styles by checking the helmet styles to trigger the helmet type selection instruction. Thereafter, the patient terminal 5 uploads the helmet type selection instruction to the cloud server 1, so that the cloud server 1 controls the 3D printing device 4 to print out the orthopedic helmet of the style selected by the helmet type selection instruction.
Further, the engineer terminal 3 of the present embodiment monitors the entire printing process in addition to confirming the simulation printing result. The engineer terminal 3 receives the warning information sent by the cloud server 1 in the orthopedic helmet printing process, and sends a debugging request to the cloud server 1 according to the warning information to check the abnormity corresponding to the warning information. Specifically, the cloud server 1 controls the 3D printing device 4 according to the 3D printing path and the printing parameters, and sends warning information to the engineer terminal 3 once printing abnormality occurs in the process of printing the orthopedic helmet. The printing exception may be a hardware operation exception of the 3D printing apparatus, or may also be a software control exception of the 3D printing apparatus 4.
The engineer checks the warning information received by the engineer terminal 3, and determines whether the hardware operation is abnormal or the software control is abnormal. If the hardware runs abnormally, the solution information is sent to the cloud server 1 through the engineer terminal 3, the solution information is forwarded to a terminal of a person operating the 3D printing equipment 4 by the cloud server 1, or the solution information is forwarded to the 3D printing equipment 4, and the operator checks the hardware running abnormity according to the solution information. If the printing abnormity is judged to be software control abnormity, a debugging request is sent to the cloud server 1 through the engineer terminal 3 to request for debugging the running of the software, and the debugging and scheduling are abnormal.
It should be noted that, besides monitoring the printing process of the orthopedic helmet, the engineer terminal 3 can also be extended to the overall process monitoring of the orthopedic helmet, including the process of receiving and analyzing various types of data for printing in the early stage of printing. The accurate and effective printing of the orthopedic helmet is ensured through the whole-process monitoring.
In addition, referring to fig. 6, the invention further provides a 3D printing method for an orthopedic helmet based on a cloud system, where the cloud system includes a cloud server 1, and a doctor terminal 2, an engineer terminal 3, and a 3D printing device 4 which are in communication connection with the cloud server 1.
The orthopedic helmet 3D printing method comprises the following steps:
step S100, the doctor terminal 2 transmits the collected head type data of the patient to the cloud server 1;
step S200, the cloud server 1 matches a helmet model corresponding to the patient head type data, and issues model information of the helmet model to the doctor terminal 2;
step S300, the doctor terminal 2 receives a first confirmation instruction for confirming the model information and uploads the first confirmation instruction to the cloud server 1;
step S400, the cloud server 1 generates a 3D printing path of the helmet model based on the first confirmation instruction, performs simulated printing based on the 3D printing path, generates a simulated printing result and issues the simulated printing result to the engineer terminal 3;
step S500, the engineer terminal 3 receives a second confirmation instruction for confirming the simulation print result, and uploads the second confirmation instruction to the cloud server 1;
step S600, after receiving the second confirmation instruction, the cloud server 1 controls the 3D printer to print the helmet according to the 3D printing path, so as to obtain an orthopedic helmet, where the orthopedic helmet includes an outer shell and an inner liner, and the outer shell and the inner liner are detachably printed into a whole through concave-convex matching.
In the 3D printing method of the orthopedic helmet based on the cloud system, the cloud system comprises the cloud server 1, and the doctor terminal 2, the engineer terminal 3 and the 3D printing device 4 which are in communication connection with the cloud server 1. When the orthopedic helmet is prepared, the doctor terminal 2 collects the head type data of the patient and transmits the collected head type data of the patient to the cloud server 1; the cloud server 1 matches a helmet model corresponding to the head type data of the patient, and sends model information of the matched helmet model to the doctor terminal 2; after receiving a first confirmation instruction for confirming the model information, the doctor terminal 2 uploads the first confirmation instruction to the cloud server 1; the cloud server 1 generates a 3D printing path of the helmet model, performs simulated printing according to the 3D printing path, generates a simulated printing result and sends the simulated printing result to the engineer terminal 3; after that, the engineer terminal 3 uploads a received second confirmation instruction for confirming the simulation printing result to the cloud server 1, the cloud server 1 controls the 3D printing device 4 to print according to the 3D printing path, the shell and the lining are obtained and matched into a detachable structure through a dovetail groove or a T-shaped groove in a concave-convex mode, and the orthopedic helmet is integrally formed during printing. Therefore, the cloud server 1 in the cloud system controls the 3D printing device 4 to print the orthopedic helmet, so that the process flows of preparing a male die, performing orthopedic modification, forming a helmet blank first and then processing are avoided, the preparation period of the orthopedic helmet is shortened, the preparation process flow is simplified, and the rapid and convenient helmet preparation for reshaping the head of the patient is realized.
Specifically, in the cloud system architecture shown in fig. 1, the cloud server 1 serves as a data processing center, and receives various types of data for printing, analyzes the data, and controls printing; the doctor terminal 2 is used for interactively uploading scanned head type data of the patient with the cloud server 1 and confirming helmet data; the engineer terminal 3 and the cloud server 1 interactively monitor the printing process and confirm the simulation result; the 3D printing device 4 performs helmet printing after receiving the printing instruction from the cloud server 1.
Further, the doctor terminal 2 is connected with a medical scanning device in a communication mode, the medical scanning device is used for scanning and collecting the head shape of the patient, the obtained head shape data of the patient are transmitted to the doctor terminal 2 to be displayed. After checking and confirming the patient head type data displayed by the doctor terminal 2, the doctor triggers an uploading operation, and uploads the acquired patient head type data to the cloud server 1. The cloud server 1 receives and matches the head type data of the patient, searches for the helmet model corresponding to the head type data, and issues the model information of the matched helmet model to the doctor terminal 2, so that the doctor can confirm whether the helmet model can be used for treating the patient.
The cloud server 1 performs classification training on various types of head type data in advance to obtain head type data classification which can be corrected by using the same orthopedic helmet. Because the head type data under the same type can be corrected by using the same orthopedic helmet, an appropriate orthopedic helmet model is set for each type of head type data. After receiving the head type data of the patient, the cloud server 1 performs similarity calculation on the head type data of the patient and the head type data of each classification in the head type data of the patient to obtain the similarity between each classification head type data and the head type data of the patient. The classification with the highest similarity is the head type data classification to which the head type data of the patient belongs, and the orthopedic helmet model suitable for the head type data classification is the helmet model matched with the head type data of the patient.
Further, the doctor terminal 2 receives and displays the model information issued by the cloud server 1, and the doctor judges whether the helmet model is suitable for correcting the head shape of the patient by checking the model information. If the correction is suitable for correcting the head shape of the patient, a first confirmation instruction is triggered at the doctor terminal 2. The doctor terminal 2 uploads the received first confirmation instruction to the cloud server 1, and the cloud server 1 generates a 3D printing path for printing the helmet model according to the first confirmation instruction. Wherein the orthopedic helmet is a double-layer helmet comprising an outer shell and an inner liner, and the outer shell is preferably formed of plastic, comprises an outer wall and an inner wall, and is used for correcting the head of a patient, and the inner liner is preferably formed of silica gel, comprises a liner body, and has a smooth inner side, so as to be in contact with the head of the patient when being worn. Referring to fig. 2, the plastic shell 10 and the silicone pad 20 shown in fig. 2 respectively form an outer shell and an inner liner of the double-layer helmet. Because the printing materials of the plastic shell 10 and the silica gel pad 20 are different, the printing materials are respectively printed by different printing heads of the 3D printing equipment 4, so that the generated 3D printing paths are respectively different for the plastic shell 10 and the silica gel pad 20; however, in the embodiment, the two types of the orthopedic helmets are printed alternately to form the final embedded and assembled orthopedic helmet, so that the outer shell and the inner liner are matched into a detachable structure through a dovetail groove or a T-shaped groove in a concave-convex mode and are printed into a whole, and manual re-assembly is not needed.
On the contrary, if the doctor judges that the matched helmet model is not suitable for correcting the head shape of the patient, a re-matching instruction is triggered at the doctor terminal 2. The doctor terminal 2 uploads the received re-matching instruction to the cloud server 1, and the cloud server 1 matches the corresponding helmet model for the head type data of the patient again. And if the helmet model obtained through multiple matching is judged by a doctor to be unsuitable for correcting the head shape of the patient, the cloud server 1 outputs the head shape data of the patient to the engineer terminal 3 so that the engineer can design the helmet model matched with the head shape data of the patient and upload the helmet model to the cloud server 1. The cloud server 1 issues the model information of the helmet model to the doctor terminal 2, so that a doctor can determine whether the helmet model is suitable for correcting the head of the patient.
Further, in order to ensure accurate printing of the orthopedic helmet, an analog printing mechanism is provided in the cloud server 1. And performing model printing according to the generated 3D printing path, generating a simulation printing result and issuing the simulation printing result to the engineer terminal 3, checking whether the simulation printing result is consistent with the helmet model by the engineer, and triggering a second confirmation instruction at the engineer terminal 3 if the simulation printing result is consistent with the helmet model. The engineer terminal 3 uploads the received second confirmation instruction to the cloud server 1, and after receiving the second confirmation instruction, the cloud server 1 controls the 3D printing device 4 to print according to the 3D printing path, so as to obtain the orthopedic helmet for correcting the head shape of the patient.
Further, the present embodiment takes, as the housing 3D printing path included in the 3D printing path, a path for printing the plastic housing 10 in the 3D printing path; and a path for printing the silicone pad 20 in the 3D printing path is used as a lining 3D printing path included in the 3D printing path.
In step S400, after receiving the first confirmation instruction, the cloud server 1 separates a shell model and a liner model from the helmet model, performs a layering process on the shell model and the liner model to obtain a shell cross-sectional pattern 100 and a liner cross-sectional pattern 200 shown in fig. 3 for each layer, and plans a shell and liner 3D printing path for each layer based on the shell cross-sectional pattern 100 and the liner cross-sectional pattern 200 for each layer, where, referring to fig. 4, the shell cross-sectional pattern 100 includes a line corresponding to an outer wall structure 101 and a line corresponding to an inner wall structure 102, a filling space is formed between the outer wall structure 101 and the inner wall structure 102, the filling space is filled with a wave-shaped filling structure 103, a plurality of longitudinally arranged protrusions 104 are further formed inward on the inner wall of the shell of the orthopedic helmet, and a joining groove is formed between adjacent protrusions 104, the lining cross-section pattern 200 comprises lines corresponding to a lining body, the inner side of the lining body is smooth, and a plurality of longitudinally arranged joint protrusions 202 protrude outwards from the lining body;
the cloud server 1 further determines shell physical data corresponding to the shell model according to the shell section pattern, performs region division on the shell model based on finite element analysis, and determines stress information of each divided region; and determining the printing parameters of each region according to the shell physical data and the stress information so as to control the 3D printing equipment 4 to print based on the 3D printing path and the printing parameters.
Further, after receiving the first confirmation instruction, the cloud server 1 splits the plastic shell 10 and the silicon rubber pad 20 included in the double-layer helmet model, and separates the plastic shell 10 and the silicon rubber pad 20 from the double-layer helmet model to serve as a shell model and a lining model, respectively. After that, the shell model and the lining model are layered separately to obtain a shell cross-sectional pattern 100 and a lining cross-sectional pattern 200 for each layer. In order to form a detachable structure with a dovetail groove or a T-shaped groove in concave-convex fit between the outer shell and the inner lining of the double-layer helmet, a plurality of longitudinally arranged protrusions 104 are formed on the inner side of the inner wall of the outer shell, and engaging grooves are formed between the adjacent protrusions 104; meanwhile, the inner side of the liner body of the liner is smooth, and a plurality of longitudinally arranged engaging protrusions 202 are arranged on the outer side of the outward non-contact head part of the liner body in a protruding mode, so that the engaging grooves and the engaging protrusions 202 are matched to form a detachable structure. Thus, the shell cross-sectional pattern 100 of the present embodiment includes a line pattern of the components of the shell, and the liner cross-sectional pattern 200 includes a line pattern of the components of the liner. Referring to fig. 4, the cross-sectional pattern 100 of the housing at least includes a line corresponding to the housing structure 105 and a line corresponding to the protrusion 104, and the line corresponding to the housing structure 105 includes a line corresponding to the outer wall structure 101 and a line corresponding to the inner wall structure 102. By constructing the path of the outer wall structure 101, the inner wall structure 102 and the protrusion 104 for each layer, a respective corresponding housing 3D printing path for each layer is formed. The lining cross-section pattern 200 at least comprises lines corresponding to the lining body structure 201 and lines corresponding to the joint protrusions 202, so that a 3D printing path of the lining corresponding to each layer is formed.
Understandably, the head of the patient is divided into an orthopedic area and a non-orthopedic area, which correspond to the orthopedic helmet, and the orthopedic helmet is also divided into an orthopedic area and a non-orthopedic area, when the patient is corrected, the orthopedic area of the head of the patient corresponds to the orthopedic area of the orthopedic helmet, so that the force applied to the head of the patient on the orthopedic area of the orthopedic helmet is large, and in order to ensure the correcting effect, the deformation of the orthopedic area of the orthopedic helmet is controlled within a specified range, and the deformation is generally controlled within 2 mm. To achieve this, it is desirable to increase the stiffness of the orthopedic region of the orthopedic helmet, i.e., to increase the stiffness of the plastic shell 10 at the orthopedic region of the orthopedic helmet. Under the condition that the thicknesses of the outer wall structure 101 and the inner wall structure 102 are constant, the rigidity of the plastic shell 10 is mainly realized by arranging the wavy filling structure 103 in the filling space formed between the outer wall structure 101 and the inner wall structure 102, and the wavy filling structure 103 is connected with the outer wall structure 101 and the inner wall structure 102, so that the outer wall structure 101, the filling structure 103 and the inner wall structure 102 form a whole, the rigidity of the plastic shell 10 structure is enhanced, and the rigidity of the whole plastic shell 10 is further enhanced.
Further, the filling structure 103 located between the outer wall structure 101 and the inner wall structure 102 is also formed by printing, and the cross-sectional pattern of the shell obtained by layering the shell model includes the pattern of the filling structure 103, and the pattern is wave-shaped. Therefore, when the paths constituting each of the outer wall structure 101, the inner wall structure 102, and the projection 104 are formed as the respective outer shell 3D printing paths for each layer, the undulations in the cross-sectional pattern of each outer shell are also added to the outer shell 3D printing paths, forming a complete outer shell 3D printing path.
Further, the wavy filling structure 103 changes the stiffness of the plastic housing 10 by changing the length of the printing period thereof, and the changes in length and stiffness are inversely proportional, i.e., the stiffness of the plastic housing 10 decreases as the period of the wavy shape increases. In the embodiment, the period is taken as one of the printing parameters, and the period is obtained by analyzing the shell physical data and the stress information of the shell model. Specifically, the cloud server 1 determines the shell physical data of the shell model according to the shell cross-sectional pattern obtained by layering, where the determined shell physical data includes the thickness of the outer wall structure 101, the thickness of the inner wall mechanism 102, and the thickness of the shell structure 105. The thickness of the shell structure 105 is the total thickness of the structure body composed of the outer wall structure 101 and the inner wall structure 102 in the shell cross-sectional pattern, and is determined by the thickness information of the shell structure 105 included in the shell cross-sectional pattern. The thickness information of the outer wall structure 101 and the thickness information of the inner wall structure 102 may be determined according to parameters of the 3D printing apparatus 4, for example, set to be an integral multiple, preferably one, of the diameter of the material ejected by the print head.
Considering that the stress information of all places in the orthopedic area is not completely the same, the orthopedic area can be further subdivided according to the stress magnitude, and the wave-shaped period in each subdivided area is determined according to the maximum stress information. Specifically, the helmet model and the data of the head type of the patient are combined to simulate the situation that the helmet model is worn on the head of the patient, a stress model is formed, finite element analysis is carried out on the stress model, and stress analysis diagrams of all parts of the helmet model are obtained. And then, carrying out region division on the helmet model according to the stress difference reflected by the stress analysis diagram to obtain stress information of each region.
Further, the cloud server 1 combines the thickness of the outer wall structure 101, the thickness of the inner wall mechanism 102, and the thickness of the outer wall structure 105 in the physical data of the shell with the stress information of each region, and determines the printing parameters such as the period of the wave shape, the interference amount, and the like in each region; and controlling the 3D printing device 4 to accurately print the orthopedic helmet in combination with the 3D printing path. Wherein, the interference amount is the distance between the peak point of the wave-shaped wave crest and the central line of the outer wall structure 101, or the distance between the valley point of the wave-shaped wave trough and the central line of the inner wall structure 102; the peak point is the middle point of the wave crest, and the valley point is the middle point of the wave trough. Moreover, the printing parameters including the period and the interference amount may be calculated and determined by a preset formula, and the preset formula is preferably formula (1) in the above embodiment, which is not described herein again. The period and the interference amount of the wave shape are determined through the formula (1), the proper wave shape is obtained, the printing parameters formed by the period and the interference amount are combined with the 3D printing path, the printing equipment is controlled to print, the orthopedic helmet capable of accurately correcting the head shape of the patient can be printed, the weight of the helmet is reduced as far as possible while the design requirement of rigidity is met, and the purpose of protecting the patient to the maximum extent is achieved.
Furthermore, the cloud system of the embodiment further includes a patient terminal 5, and the patient terminal 5 is in communication connection with the cloud server 1; after the step S600, the method further includes:
a1, the patient terminal 5 feeds back feedback information of the orthopedic helmet to the cloud server 1, and the cloud server 1 receives the feedback information and sends the feedback information to the doctor terminal 2;
a step a2, the doctor terminal 2 receiving correction data for correcting the patient head shape data based on the feedback data and uploading the correction data to the cloud server 1; the cloud server 1 performs a step of matching a helmet model corresponding to the patient head model data based on the correction data.
The cloud server 1 in the cloud system of the present embodiment is communicatively connected with a patient terminal 5 in addition to the doctor terminal 2, the engineer terminal 3, and the 3D printing apparatus 4. The patient terminal 5 is used for feeding back wearing feeling or wearing problems in the wearing process of the orthopedic helmet to the cloud server 1 so as to improve and optimize the orthopedic helmet or answer the wearing problems when the wearing feeling is poor, and the use of the orthopedic helmet by a patient is facilitated.
Specifically, while the infant wears the helmet to correct the head shape, the infant family observes the head shape and the infant state of the infant, and feeds back the existing question or the state feeling to the cloud server 1 through the patient terminal 5 as feedback information for using the orthopedic helmet. The cloud service receives the feedback information and sends the feedback information to the doctor terminal 2, and the feedback information is displayed by the doctor terminal 2 for the doctor to check. The doctor judges whether the state feeling embodied by the feedback information belongs to normal feeling or not, and returns normal reply information to the cloud server 1 if the state feeling belongs to the normal feeling; or the doctor answers the questions in the feedback information to form reply information and uploads the reply information to the cloud server 1; the cloud server 1 receives the reply information and sends the reply information to the patient terminal 5 to solve the problem.
Further, if the feedback data fed back from the patient terminal 5 is determined by the doctor to be abnormal data, the abnormality such as improper division of the orthopedic region and the non-orthopedic region, failure to achieve the corrective effect, or over-correction is detected. At this time, the patient head shape data needs to be corrected. Specifically, the medical scanning device acquires the patient head shape data again, and transmits the acquired patient head shape data to the doctor terminal 2 as correction data for correcting the initially acquired patient head shape data, and the correction data is uploaded to the cloud server 1 through the doctor terminal 2. The cloud server 1 receives the correction data, corrects the initial patient head type data according to the correction data, and further matches the corrected patient head type data with a corresponding helmet model to generate a 3D printing path to reprint the orthopedic helmet. The modification of the initial patient head form data by the cloud server 1 may be a replacement of the initial patient head form data by the modification data; or comparing the difference between the two, and correcting the initial patient head shape data by the difference, which is not limited specifically.
It should be noted that, in addition to transmitting the feedback information to the cloud server 1, the patient terminal 5 of the present embodiment may also select a type of the helmet model. Specifically, after step S200, the method further includes:
step b, the cloud server 1 issues a helmet model corresponding to the helmet model to the patient terminal 5, and the patient terminal 5 sends a helmet model selection instruction to the cloud server 1 based on the helmet model.
Further, after matching the helmet model corresponding to the head type data of the patient, the cloud server 1 issues the helmet style of the helmet model to the patient terminal 5, and the helmet model is displayed by the patient terminal 5. The family members of the patient view the displayed helmet styles, select the required helmet style from the helmet styles, and trigger the helmet style selection instruction to be uploaded to the cloud server 1. The cloud server 1 receives the helmet type selection instruction and controls the 3D printing device 4 to print out the orthopedic helmet of the style selected by the helmet type selection instruction.
Further, the engineer terminal 3 in communication connection with the cloud server 1 in the present embodiment monitors the entire printing process in addition to confirming the simulation printing result. Specifically, in step S600: in the process of receiving the printing of the orthopedic helmet, the engineer terminal 3 sends warning information to the cloud server 1, and sends a debugging request to the cloud server 1 according to the warning information so as to check the abnormality corresponding to the warning information.
Furthermore, the cloud server 1 controls the 3D printing device 4 according to the 3D printing path and the printing parameters, and sends warning information to the engineer terminal 3 once printing abnormality occurs in the process of printing the orthopedic helmet. The printing exception may be a hardware operation exception of the 3D printing apparatus, or may also be a software control exception of the 3D printing apparatus 4.
The engineer checks the warning information received by the engineer terminal 3, and determines whether the hardware operation is abnormal or the software control is abnormal. If the hardware runs abnormally, the solution information is sent to the cloud server 1 through the engineer terminal 3, the solution information is forwarded to a terminal of a person operating the 3D printing equipment 4 by the cloud server 1, or the solution information is forwarded to the 3D printing equipment 4, and the operator checks the hardware running abnormity according to the solution information. If the printing abnormity is judged to be software control abnormity, a debugging request is sent to the cloud server 1 through the engineer terminal 3 to request for debugging the running of the software, and the debugging and scheduling are abnormal.
It should be noted that, besides monitoring the printing process of the orthopedic helmet, the engineer terminal 3 can also be extended to the overall process monitoring of the orthopedic helmet, including the process of receiving and analyzing various types of data for printing in the early stage of printing. The accurate and effective printing of the orthopedic helmet is ensured through the whole-process monitoring.
It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the invention.

Claims (10)

1. A cloud system for realizing 3D printing of an orthopedic helmet is characterized by comprising a cloud server, and a doctor terminal, an engineer terminal and a 3D printing device which are in communication connection with the cloud server; wherein the content of the first and second substances,
the doctor terminal transmits the acquired head type data of the patient to the cloud server;
the cloud server matches a helmet model corresponding to the patient head type data, and model information of the helmet model is sent to the doctor terminal;
the doctor terminal receives a first confirmation instruction for confirming the model information and uploads the first confirmation instruction to the cloud server;
the cloud server generates a 3D printing path of the helmet model based on the first confirmation instruction, performs simulated printing based on the 3D printing path, and generates a simulated printing result to be issued to an engineer terminal;
the engineer terminal receives a second confirmation instruction for confirming the simulation printing result and uploads the second confirmation instruction to the cloud server;
and after receiving the second confirmation instruction, the cloud server controls the 3D printing device to print according to the 3D printing path to obtain the orthopedic helmet, wherein the orthopedic helmet comprises an outer shell and a lining, and the outer shell and the lining are detachably printed into a whole through concave-convex matching.
2. The cloud system according to claim 1, wherein the 3D printing path includes an outer shell and inner liner 3D printing path, the cloud server, after receiving the first confirmation instruction, separates an outer shell model and an inner liner model from the helmet model, performs layering on the outer shell model and the inner liner model to obtain an outer shell cross-sectional pattern and an inner liner cross-sectional pattern of each layer, and plans an outer shell and inner liner 3D printing path of each layer based on the outer shell cross-sectional pattern and the inner liner cross-sectional pattern of each layer, wherein the outer shell cross-sectional pattern includes lines corresponding to an outer wall structure and lines corresponding to an inner wall structure, a filling space is formed between the outer wall structure and the inner wall structure, the filling space is filled with a filling structure in a wave shape, and a plurality of longitudinally arranged protrusions are further formed on an inner side of an outer shell wall of the orthopedic helmet, a joint groove is formed between the adjacent bulges, the cross section pattern of the lining comprises lines corresponding to the lining body, the inner side of the lining body is smooth, and a plurality of longitudinally arranged joint bulges protrude outwards from the lining body;
the cloud server further determines shell physical data corresponding to the shell model according to the shell section pattern, performs area division on the shell model based on finite element analysis, determines stress information of each divided area, and determines printing parameters of each area according to the shell physical data and the stress information so as to control the 3D printing equipment to print based on the 3D printing path and the printing parameters.
3. The cloud system of claim 1, wherein the cloud system further comprises a patient terminal, the patient terminal being communicatively connected to the cloud server;
the patient terminal feeds back feedback information using the orthopedic helmet to the cloud server, and the cloud server receives the feedback information and sends the feedback information to the doctor terminal;
the doctor terminal receives correction data for correcting the patient head type data based on the feedback data and uploads the correction data to the cloud server; the cloud server performs a step of matching a helmet model corresponding to the patient head model data based on the correction data.
4. The cloud system of claim 3, wherein the cloud server issues a helmet style corresponding to the helmet model to the patient terminal, and the patient terminal sends a helmet type selection instruction to the cloud server based on the helmet style.
5. The cloud system according to any one of claims 1 to 4, wherein the engineer terminal sends warning information to the cloud server during the printing process of the orthopedic helmet, and sends a debugging request to the cloud server according to the warning information to troubleshoot an abnormality corresponding to the warning information.
6. The 3D printing method for the orthopedic helmet based on the cloud system is characterized in that the cloud system comprises a cloud server, and a doctor terminal, an engineer terminal and a 3D printing device which are in communication connection with the cloud server;
the orthopedic helmet 3D printing method comprises the following steps:
s100, the doctor terminal transmits the collected head type data of the patient to the cloud server;
s200, the cloud server matches a helmet model corresponding to the patient head type data and issues model information of the helmet model to the doctor terminal;
s300, the doctor terminal receives a first confirmation instruction for confirming the model information and uploads the first confirmation instruction to the cloud server;
s400, the cloud server generates a 3D printing path of the helmet model based on the first confirmation instruction, performs simulated printing based on the 3D printing path, and generates a simulated printing result to be issued to an engineer terminal;
s500, the engineer terminal receives a second confirmation instruction for confirming the simulation printing result and uploads the second confirmation instruction to the cloud server;
s600, after receiving the second confirmation instruction, the cloud server controls the 3D printer to print the helmet according to the 3D printing path to obtain the orthopedic helmet, wherein the orthopedic helmet comprises an outer shell and a lining, and the outer shell and the lining are detachably printed into a whole through concave-convex matching.
7. The orthopedic helmet 3D printing method of claim 6, wherein the 3D printing path comprises an outer shell and an inner liner 3D printing path, and in the step S400:
after receiving the first confirmation instruction, the cloud server separates a shell model and a lining model from the helmet model, performs layering processing on the shell model and the lining model to obtain a shell section pattern and a lining section pattern of each layer, and plans a shell and lining 3D printing path of each layer based on the shell section pattern and the lining section pattern of each layer, wherein the shell section pattern comprises a line corresponding to an outer wall structure and a line corresponding to an inner wall structure, a filling space is formed between the outer wall structure and the inner wall structure, the filling space is filled with a wave-shaped filling structure, a plurality of longitudinally-arranged protrusions are further formed on the inner wall of the shell of the orthopedic helmet inwards, a joint groove is formed between adjacent protrusions, the lining section pattern comprises a line corresponding to a lining body, and the inner side of the lining body is smooth, the gasket body protrudes outwards with a plurality of longitudinally arranged engaging protrusions;
the cloud server further determines shell physical data corresponding to the shell model according to the shell section pattern, performs area division on the shell model based on finite element analysis, determines stress information of each divided area, and determines printing parameters of each area according to the shell physical data and the stress information so as to control the 3D printing equipment to print based on the 3D printing path and the printing parameters.
8. The orthopedic helmet 3D printing method of claim 6, wherein the cloud system further comprises a patient terminal communicatively connected with the cloud server, after the step S600, the method further comprising:
the patient terminal feeds back feedback information using the orthopedic helmet to the cloud server, and the cloud server receives the feedback information and sends the feedback information to the doctor terminal;
the doctor terminal receives correction data for correcting the patient head type data based on the feedback data and uploads the correction data to the cloud server; the cloud server performs a step of matching a helmet model corresponding to the patient head model data based on the correction data.
9. The orthopedic helmet 3D printing method of claim 8, wherein after the step S200, the method further comprises:
the cloud server issues the helmet model corresponding to the helmet model to the patient terminal, and the patient terminal sends a helmet model selection instruction to the cloud server based on the helmet model.
10. The orthopedic helmet 3D printing method of any of claims 6-9, wherein in step S600:
and the engineer terminal sends warning information in the process of receiving the printing of the orthopedic helmet, and sends a debugging request to the cloud server according to the warning information so as to check the abnormity corresponding to the warning information.
CN202110096107.0A 2021-01-25 2021-01-25 Cloud system for realizing 3D printing of orthopedic helmet and 3D printing method of orthopedic helmet Active CN113199760B (en)

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Publication number Priority date Publication date Assignee Title
CN107081911A (en) * 2017-04-21 2017-08-22 广东云能计算机科技有限公司 A kind of 3D printing cooperating manufacture system and method based on cloud service
CN209270010U (en) * 2018-10-30 2019-08-20 苏州泓舰自动化科技有限公司 A kind of orthopedic helmet
CN209270012U (en) * 2018-10-30 2019-08-20 苏州泓舰自动化科技有限公司 A kind of orthopedic helmet
CN111110418A (en) * 2018-10-30 2020-05-08 苏州泓舰自动化科技有限公司 Production method of orthopedic helmet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107081911A (en) * 2017-04-21 2017-08-22 广东云能计算机科技有限公司 A kind of 3D printing cooperating manufacture system and method based on cloud service
CN209270010U (en) * 2018-10-30 2019-08-20 苏州泓舰自动化科技有限公司 A kind of orthopedic helmet
CN209270012U (en) * 2018-10-30 2019-08-20 苏州泓舰自动化科技有限公司 A kind of orthopedic helmet
CN111110418A (en) * 2018-10-30 2020-05-08 苏州泓舰自动化科技有限公司 Production method of orthopedic helmet

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