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Precinct laser fusion rapid molding method and device of medical implantation material wax mould

A technology of selective laser melting and forming method, applied in application, home appliances, other home appliances, etc., can solve the problems of difficult diagnosis and repair, lack of topology information, point diffusion, etc., to achieve compact and lightweight equipment design, compact system structure, The effect of reducing the weight of the equipment

Inactive Publication Date: 2008-11-26
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the STL format data has data redundancy and huge files; lack of topological information, it is prone to errors such as overhanging surfaces, overhanging edges, point diffusion, surface overlapping, holes, etc., and there are surface errors, making it difficult to diagnose and repair.
This makes the forming accuracy of the product prototype obtained in the actual forming not high, and the surface quality is not good

Method used

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  • Precinct laser fusion rapid molding method and device of medical implantation material wax mould
  • Precinct laser fusion rapid molding method and device of medical implantation material wax mould
  • Precinct laser fusion rapid molding method and device of medical implantation material wax mould

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Embodiment Construction

[0047] The present invention will be described in further detail below with reference to the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.

[0048] like figure 1 As shown, the device for the selective laser melting rapid prototyping method of the medical implant wax model includes a host computer 1, a laser focusing and scanning system, and a powder laying system. The laser focusing and scanning system adopts the method of scanning first and then focusing. It includes a laser 3, a beam expander 4, an X-axis scanning galvanometer 5, a Y-axis scanning galvanometer 6, and a focusing lens 7 sequentially connected by an optical path; the laser 3 adopts a radio frequency CO2 laser of TEM00 mode, the output power is ≤10W, and the wavelength is 10.6 μm, beam quality factor M2 ≤ 1.2, laser output spot ≤ 4mm; beam expander 4 with a beam expansion factor of 5 to 8 times; X-axis scanning galvanometer 5, Y-axis scanning galvanomet...

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Abstract

The invention provides a method for laser-melting and fast forming of a choosing area of a medical implant moulage, which refers to measuring an organ of a patient to obtain the original data for a medical implant; three-dimensional CAD software is adopted to transform the original data into a three-dimensional CAD model for secondary processing and then for slicing processing so as to obtain a multi-layer-slice two-dimensional CAD data model of the medical implant; scanning path planning is carried out to the two-dimensional CAD data model of each slice to obtain scanning path data which is guided into a host computer of a choosing area laser-melting and fast forming device, and a layer-to-layer fast scanning method is adopted to carry out the choosing area laser-melting and fast forming to paraffin powder so as to prepare and obtain the medical implant moulage; the medical implant moulage is taken out to clear redundant paraffin power on the surface. The slicing processing of the invention does not relate to STL format data; the formed moulage has dense tissue, thus no more processing is needed after infiltration of the paraffin, small scale forming equipment can be realized, equipment producing cost can be reduced and forming time is shortened.

Description

technical field [0001] The invention relates to a manufacturing technology of a medical implant, in particular to a method and a device for rapid prototyping of a medical implant wax model by selective laser melting. Background technique [0002] At present, medical implants have been widely used clinically, such as dentures, orthodontic appliances, bone defect repair blocks, artificial joints, and spinal orthopedic internal fixation systems. These medical implant parts have the characteristics of short production cycle, strong personalization, complex structure, and small batches of single pieces. Some traditional parts processing technologies (turning, planing, milling, grinding) are not suitable for the production of medical implant parts. . [0003] Rapid prototyping technology (Rapid Prototyping-RP) is a new technology pioneered by developed countries in the late 1980s. Its main technical features are the rapidity of forming and the complexity of forming structures. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C51/00B29C73/00B29K91/00B29L22/00A61B6/03
CPCB29C64/153
Inventor 杨永强吴伟辉王淑范
Owner SOUTH CHINA UNIV OF TECH
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