阅读说明：本技术 一种硅胶血管模型的制作工艺 (Manufacturing process of silica gel blood vessel model ) 是由 耿炎 夏冬冬 于 2019-08-30 设计创作，主要内容包括：本发明公开了一种硅胶血管模型的制作工艺,本发明具体包括以下步骤：S1、首先获取人体结构的断层扫描数据,再使用软件将该数据转换成立体模型,提取模型中的血管部分,转换成可3D打印的STL数据,S2、将步骤S1中的STL数据通过3D打印机用可溶性3D打印材料制作成中空结构的血管模型,S3、在步骤S2获得的3D打印模型表面使用涂抹刷均匀涂抹脱模剂,本发明涉及医疗技术领域。该硅胶血管模型的制作工艺,可实现采用硅胶3D打印出透明、柔软的人体血管结构,来完成成型,能够完全还原人体血管复杂结构,为医生提供一个真实的训练环境的加工手段,通过采用硅胶3D打印工艺做出的模型具有人体血管的回弹触感,与真实手术环境差距较小。(The invention discloses a manufacturing process of a silica gel blood vessel model, which specifically comprises the following steps: s1, firstly, acquiring tomography data of a human body structure, then converting the data into a three-dimensional model by using software, extracting a blood vessel part in the model, converting the blood vessel part into STL data which can be printed in a 3D mode, S2, manufacturing the STL data in the step S1 into a blood vessel model with a hollow structure by using a soluble 3D printing material through a 3D printer, and S3, wherein a release agent is uniformly coated on the surface of the 3D printing model obtained in the step S2 by using a coating brush. This preparation technology of silica gel blood vessel model can realize adopting silica gel 3D to print out transparent, soft human vascular structure, accomplishes the shaping, can restore human vascular complex structure completely, provides the processing means of a real training environment for the doctor, has the resilience sense of touch of human blood vessel through the model that adopts silica gel 3D printing technology to make, and is less with real operation environment difference.)

1. A manufacturing process of a silica gel blood vessel model is characterized by comprising the following steps: the method specifically comprises the following steps:

s1, firstly, acquiring tomography data of a human body structure, converting the data into a three-dimensional model by using software, extracting a blood vessel part in the model, and converting the blood vessel part into STL data capable of being printed in a 3D mode;

s2, making the STL data in the step S1 into a blood vessel model with a hollow structure by using a soluble 3D printing material through a 3D printer;

s3, uniformly coating a release agent on the surface of the 3D printing model obtained in the step S2 by using a coating brush;

s4, uniformly coating a layer of room-temperature-cured high-transparency silica gel on the surface of the model, and waiting for the silica gel to be cured;

s5, repeatedly coating the silica gel until the thickness of the silica gel layer is 0.5-3 mm;

s6, soaking the blood vessel model which is repeatedly coated with the silica gel in the step S5 into water or solvent, and dissolving the 3D printing model in the silica gel;

s7, and then the 3D printed part dissolved in the inside of the silicone gel of step S6 is taken out and the inside is cleaned, thereby obtaining a transparent silicone blood vessel model.

2. The process for manufacturing a silica gel blood vessel model according to claim 1, wherein: in step S1, the tomographic data of the human body structure is acquired by scanning with a CT apparatus or a nuclear magnetic apparatus.

3. The process for manufacturing a silica gel blood vessel model according to claim 1, wherein: the release agent in the step S3 is one or a combination of silicone oil, silicone ester, polyethylene glycol or low molecular weight polyethylene.

4. The process for manufacturing a silica gel blood vessel model according to claim 1, wherein: and the curing time of the silica gel in the step S4 is 10-300 min.

5. The process for manufacturing a silica gel blood vessel model according to claim 1, wherein: and in the step S7, the step of washing the interior of the silica gel is to wash the interior of the silica gel by using a washing machine with the water pressure of 10-15 Mpa.

6. The process for manufacturing a silica gel blood vessel model according to claim 1, wherein: the soluble 3D printing material in step S2 is one or a combination of polyvinyl alcohol and HIPS resin.

7. The process for manufacturing a silica gel blood vessel model according to claim 1, wherein: the software for converting the scan data into the stereo model in step S1 is one of replicator g control software and Geomagic Wrap control software.

Technical Field

The invention relates to the technical field of medical treatment, in particular to a manufacturing process of a silica gel blood vessel model.

Background

The cardiovascular interventional operation is one of minimally invasive operations, a doctor needs to enter a guide wire from a radial artery at the wrist of a patient by means of X-ray fluoroscopy and then the guide wire passes through a plurality of branch points to reach a coronary artery on the outer wall of the heart, the operation process is long and complex, the guide wire can reach a designated position generally within hours, and therefore, a simulation training means is needed for inexperienced doctors.

The traditional processing means comprises injection molding and blow molding, but only a hollow structure with one-level branches can be made due to the limitation of a mold, and after the number of the branches is more than 2, the inner mold cannot be taken out.

The 3D printing can be used for manufacturing a multi-level branch hollow structure, but the selection of materials is limited, only hard resin can be used, the manufactured model does not have the resilience touch feeling of human blood vessels, the difference from the real operation environment is large, and the training value is not realized.

The invention provides a transparent and soft forming mode of a human blood vessel structure, which can completely restore the complex structure of the human blood vessel and provide a real training environment for doctors.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a manufacturing process of a silica gel blood vessel model, and solves the problems that the existing processing means comprises injection molding and blow molding, only a hollow structure with one-level branches can be manufactured due to the limitation of a mold, the inner mold cannot be taken out after the number of the branches is more than 2, a multi-level branch hollow structure can be manufactured by 3D printing, but the selection of materials is limited, only hard resin can be used, the manufactured model does not have the rebound touch feeling of a human blood vessel, has a large difference from the real operation environment, and does not have a training value.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a manufacturing process of a silica gel blood vessel model specifically comprises the following steps:

s1, firstly, acquiring tomography data of a human body structure, converting the data into a three-dimensional model by using software, extracting a blood vessel part in the model, and converting the blood vessel part into STL data capable of being printed in a 3D mode;

s2, making the STL data in the step S1 into a blood vessel model with a hollow structure by using a soluble 3D printing material through a 3D printer;

s3, uniformly coating a release agent on the surface of the 3D printing model obtained in the step S2 by using a coating brush;

s4, uniformly coating a layer of room-temperature-cured high-transparency silica gel on the surface of the model, and waiting for the silica gel to be cured;

s5, repeatedly coating the silica gel until the thickness of the silica gel layer is 0.5-3 mm;

s6, soaking the blood vessel model which is repeatedly coated with the silica gel in the step S5 into water or solvent, and dissolving the 3D printing model in the silica gel;

s7, and then the 3D printed part dissolved in the inside of the silicone gel of step S6 is taken out and the inside is cleaned, thereby obtaining a transparent silicone blood vessel model.

Preferably, the step S1 of acquiring tomographic data of the body structure is performed by scanning and acquiring with a CT apparatus or a nuclear magnetic apparatus.

Preferably, the release agent in step S3 is one or more of silicone oil, silicone ester, polyethylene glycol or low molecular weight polyethylene.

Preferably, the curing time of the silica gel in the step S4 is 10-300 min.

Preferably, the step S7 of cleaning the inside of the silica gel is to flush the inside of the silica gel by using a flushing machine with a water pressure of 10 to 15 Mpa.

Preferably, the soluble 3D printing material in step S2 is one or more of polyvinyl alcohol or HIPS resin.

Preferably, the software for converting the scan data into the stereo model in step S1 is one of replicator g control software and geogenic Wrap control software.

(III) advantageous effects

The invention provides a manufacturing process of a silica gel blood vessel model. Compared with the prior art, the method has the following beneficial effects: the manufacturing process of the silica gel blood vessel model specifically comprises the following steps: s1, firstly obtaining tomography data of a human body structure, then converting the data into a three-dimensional model by using software, extracting a blood vessel part in the model, converting the blood vessel part into STL data which can be printed in a 3D mode, S2, manufacturing the STL data in the step S1 into a blood vessel model with a hollow structure by using a soluble 3D printing material through a 3D printer, S3, uniformly coating a release agent on the surface of the 3D printing model obtained in the step S2 by using a coating brush, S4, uniformly coating a layer of room temperature curing high transparent silica gel on the surface of the model, waiting for the silica gel to be cured, S5, repeatedly coating the silica gel until the thickness of the silica gel layer is 0.5-3mm, S6, immersing the whole blood vessel model coated with the silica gel repeatedly in the step S5 into water or a solvent, dissolving the 3D printing model in the silica gel, S7, then taking out the 3D printing part dissolved in the silica gel in the step S4, and the inside is cleaned, thereby obtaining a transparent silica gel blood vessel model, realizing that a transparent and soft human blood vessel structure is printed by silica gel 3D to complete the forming, completely reducing the complex structure of the human blood vessel, providing a real processing means of a training environment for doctors, well replacing the existing injection molding and blow molding forming process, avoiding the situation that the inner mold cannot be taken out due to the limitation of the mold and only can be used for making a hollow structure with one-level branches after the number of the branches is more than 2, the model made by the silica gel 3D printing process has the resilience touch feeling of the human blood vessel, has small difference with the real operation environment, has training value, does not need to use a splicing and pasting forming mode to connect the blood vessel model, prevents the situation that the unevenness at the joint position obstructs the operation of the guide wire, and thus carries out one-time forming by printing the blood vessel model by the silica gel 3D, greatly reduces the probability of surface defects of the blood vessel model, thereby being very beneficial to the manufacture of the blood vessel model.

Drawings

FIG. 1 is a flow chart of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides five technical solutions: a manufacturing process of a silica gel blood vessel model specifically comprises the following embodiments: