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Path planning method for 3D bioprinting based on Euler circuit

A 3D printing and path planning technology, applied in the field of 3D printing, can solve the problems that need to be improved, and achieve the effect of improving the quality of printed products, simple calculation, and improving cell activity.

Active Publication Date: 2022-05-13
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this composite scanning method improves the printing strength while improving the accuracy of the printed product, the continuity of its path filling is still similar to that of parallel linear scanning and filling, and both need to be improved.

Method used

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  • Path planning method for 3D bioprinting based on Euler circuit
  • Path planning method for 3D bioprinting based on Euler circuit
  • Path planning method for 3D bioprinting based on Euler circuit

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Embodiment Construction

[0056] The specific implementation manner of the present invention is described in detail below in conjunction with accompanying drawing and technical scheme:

[0057] attached figure 1 For the flow chart of the present invention, according to the flow chart, the concrete steps of the method are as follows:

[0058] Step 1: slice the biological tissue model according to a given layer height H=0.3mm, read the STL stereolithography model file with MATLAB software, and slice to obtain the model slice outline. Taking the example model as an example, such as figure 2 shown.

[0059] Step 2: Offset the inner and outer contours of the model in the slice layer according to the given distance h=0.3mm and the number of printed contour layers n=2. Offset the single-layer outer contour of the calculation example inward once to obtain the first-layer printed outer contour, and offset the offset contour inward again to obtain the second-layer printed outer contour, as shown in image ...

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Abstract

The invention relates to a path planning method for biological 3D printing based on an Euler circuit, which belongs to the field of 3D printing, and relates to a method for planning a path for 3D printing of a biological tissue and organ model by using an Euler circuit and an adaptive mixed filling template. The method is based on the composite scanning filling method, and divides the contour of the sliced ​​biological tissue model into regions. Store the divided sub-regions as a Reeb graph data structure, and construct a corresponding Euler graph data structure. The Euler circuit is obtained in the Euler diagram, and the adaptive mixed filling template is applied in each sub-area to generate the sub-area path according to the Euler circuit, and the filling path is optimized and rearranged; the sub-area filling path and the outline are offset Paths are combined to get model filled paths. The printing path generated by using the present invention is simple to calculate and has strong applicability, and the final path obtained after path rearrangement has extremely high continuity, which ensures printing accuracy while improving printing efficiency, and improves cell activity of biological 3D printing products.

Description

technical field [0001] The invention belongs to the field of 3D printing, and relates to a method for path planning for 3D printing of biological tissue and organ models by using an Euler circuit and an adaptive mixed filling template. Background technique [0002] So far, organ transplantation is still an effective measure to solve medical problems such as malignant tumors and organ failure in clinical practice. Affected by many factors, the shortage of donor organs has always been the biggest problem plaguing patients. At the same time, even if the patient can obtain a donor organ, the existence of rejection will require the recipient to take life-long medication to improve the survival rate of the graft. Therefore, people place their hopes on science and technology, and urgently need to find new technologies that can solve the problem of organ transplantation. Since the concept of 3D printing was proposed, this technology has gradually developed into daily necessities, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/393B33Y50/02
CPCB29C64/393B33Y50/02
Inventor 赵丹阳杨卓达张诚李红霞史伟良
Owner DALIAN UNIV OF TECH