Combined machining method for SLA orthosis formed by three-dimensional printing

A technology of 3D printing and compound processing, which is applied in the fields of medical science and prostheses, can solve the problems of heat resistance, 3D printed orthotics are easy to age, and high material cost, so as to improve loading performance, overcome aging brittleness, digital Prosthetic orthopedic precise results

Active Publication Date: 2015-08-05
REGENOVO BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to provide a composite processing method for SLA orthotics in order to overcome the disadvantages of easy aging, high material cost, and heat resistance of three-dimensional printing...

Method used

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  • Combined machining method for SLA orthosis formed by three-dimensional printing
  • Combined machining method for SLA orthosis formed by three-dimensional printing
  • Combined machining method for SLA orthosis formed by three-dimensional printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] By operating the Artec Eva handheld body scanner 3D scanner (1) of Artec 3D Company, the patient needs to be corrected, that is, the limb to be scanned (2) is scanned in 3D, and the ankle-foot part (4) of the patient to be corrected is scanned in 3D scan data, such as figure 1 shown.

[0037] By using the Magics software of Materialize company to process (5) the limb data obtained by scanning, such as figure 2 As shown in Fig. 1, perform operations such as shape repair and shape correction on the limbs to be orthopedic, and perform shell extraction to obtain a 3D model of the ankle-foot orthosis with a wall thickness of 1 mm and meeting ergonomic requirements (6).

[0038] The 3D model of the ankle-foot-orthosis is input into the iSLA-650 light-curing rapid prototyping printer of SHINING 3D Company, and Somos GP Plus material is used for 3-D printing production through stereolithography rapid prototyping technology (8), and the SLA shell of the ankle-foot-orthosis is ...

Embodiment 2

[0043] By operating the Sense handheld body scanner 3D scanner (1) of 3D Systems, the patient needs to be corrected, that is, the limb to be scanned (2) is scanned in 3D, and the 3D scan data of the patient's arm to be corrected (3) is obtained by scanning ,Such as figure 1 shown.

[0044] By using the Magics software of Materialize company to process (5) the limb data obtained by scanning, such as figure 2 As shown in Fig. 1, perform operations such as shape repair and shape correction on the limbs to be orthopedic, and perform shell extraction to obtain a 3D model of the arm orthosis with a wall thickness of 0.7 mm and meeting ergonomic requirements (7).

[0045] The 3D model of the arm orthosis was input into the iSLA-650 photo-curing rapid prototyping printer of SHINING 3D Company, and the Somos GP Plus material was used to produce 3-D printing through stereolithography rapid prototyping technology (8), and the SLA shell of the arm orthosis (10 ),Such as image 3 shown...

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Abstract

The invention discloses a combined machining method for a SLA orthosis formed by three-dimensional printing. The method comprises the following steps: in the digital model design stage of an orthosis, the wall thickness of the orthosis is set to be 0.7-1.0 mm, and the digital model is molded through a three-dimensional printing process; the inner side of an orthosis SLA housing is coated with a release agent which serves as a demoulding layer, and a semi-water fibrous plaster is injected and serves as an internal support after curing; the outer side of the orthosis SLA housing is coated with a resin fiber coating layer to form a composite reinforcing layer; and finally, heating is performed to cure the resin fiber coating layer, and then the only requirement is to remove the plaster support. The combined machining method solves the problem that a pure SLA material has high probability of ageing and brittle rupture and is relatively high in cost and high in probability of deformation once heated; the consumption of a SLA material is reduced by 40-65%, and both resin and fibers are low in price, so that the cost is greatly reduced; the softening temperature of the orthosis subjected to combined machining is increased by 15-25 DEG C; and the combined machining material is favorable in ductility and the loading performance of the combined machining material is increased by 3 to 5 times compared with that of the pure SLA material.

Description

technical field [0001] The invention relates to composite processing technology, in particular to a fiber resin composite processing method for orthotics produced by stereolithography rapid prototyping (SLA) technology. Background technique [0002] Orthosis refers to the general term for in vitro appliances assembled on the limbs, trunk and other parts of the human body. According to the installation location, orthosis can be divided into three categories: upper limb orthosis, lower limb orthosis and spinal orthosis. Correct deformities of limbs, trunk or treat bone joint and neuromuscular diseases and compensate their function. Its functions mainly include the following aspects: [0003] (1) Stabilization and support: maintain joint stability and restore weight-bearing or exercise capacity by limiting abnormal movements of the limbs or trunk. [0004] (2) Fixation and correction: For deformed limbs or trunks, the deformity is corrected or the aggravation of the deformity...

Claims

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Application Information

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IPC IPC(8): A61F2/02A61F2/50
Inventor 徐铭恩王玲陈阳
Owner REGENOVO BIOTECH
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