Manufacturing method of medical bionic trabeculae structure multihole tantalum bone implant prosthesis through laser additive manufacturing-high-temperature vacuum sintering

A high-temperature vacuum and laser additive technology, which is applied to bone implants, prostheses, manufacturing tools, etc., can solve the problems of rising costs, increased oxygen content of tantalum metal products, and high tantalum oxygen content of 3D printed metals. Oxygen content requirements, pollution avoidance, and cost reduction effects

Active Publication Date: 2020-02-04
湖南华翔医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the wire cutting process, the porous tantalum prosthesis will be contaminated by wire cutting oil, wire cutting coolant and cutting molybdenum wire. The subsequent cleaning process of human implants cannot completely eliminate these pollutions, or lead to the use of several different Complex method for cleaning, not conducive to industrial applications
[0005] (2) The problem of excessive oxygen content in the produced 3D printed metal tantalum: In the industry, vacuum heat treatment is usually carried out at a temperature of 1000-1200°C to eliminate the stress of tantalum products, and during the vacuum heat treatment process, the oxygen content of tantalum metal products will be Increased
For this reason, many people seek to control and reduce the oxygen content of laser printing raw material tantalum powder to be below 200ppm, which makes the production of laser printing raw material tantalum powder more difficult, the production efficiency of tantalum powder products is very low, and the cost is greatly increased. rise
[0006] (3) The existing production process is not a complete process for the production and manufacture of medical bone imitation trabecular structure porous tantalum bone implant prosthesis, and it is necessary to produce qualified medical human body imitation trabecular structure porous tantalum bone implant prosthesis production, and creatively perfect and improve the process method

Method used

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  • Manufacturing method of medical bionic trabeculae structure multihole tantalum bone implant prosthesis through laser additive manufacturing-high-temperature vacuum sintering
  • Manufacturing method of medical bionic trabeculae structure multihole tantalum bone implant prosthesis through laser additive manufacturing-high-temperature vacuum sintering
  • Manufacturing method of medical bionic trabeculae structure multihole tantalum bone implant prosthesis through laser additive manufacturing-high-temperature vacuum sintering

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Embodiment 1

[0057] This embodiment provides a laser additive manufacturing-high temperature vacuum sintering method for manufacturing a porous tantalum knee joint patella prosthesis with a bone-like trabecular structure, such as figure 1 As shown, it is the three-dimensional design drawing of the implanted prosthesis and its support in this embodiment, such as figure 2 As shown, it is the printed physical map after the support is removed in this embodiment.

[0058] The batch number of tantalum powder used for 3D printing in this embodiment is 181221-270, particle size distribution: D50=29.38um, D10=10.56um, D90=58.99um; fluidity: 50g / 13.7 seconds; oxygen content 1138ppm; the tantalum The particle type of powder is hydrogenated polyhedral tantalum powder;

[0059] The oxygen content of the laser 3D printed porous tantalum knee joint patella prosthesis with bone-like trabecular structure was 1253ppm before high-temperature vacuum sintering and oxygen reduction treatment.

[0060] This e...

Embodiment 2

[0085] This embodiment provides a laser additive manufacturing-high temperature vacuum sintering method for manufacturing a prosthesis for bone reconstruction and repair after resection of a medical trabecular bone imitation porous tantalum pelvic tumor, such as image 3 As shown, it is the three-dimensional design drawing of the implanted prosthesis and its support in this embodiment, such as Figure 4 As shown, it is the simulated installation effect diagram (left) and the implantation effect X-ray photo (right) of the prosthetic prosthesis in this embodiment.

[0086] In this example, the porous tantalum with bone-like trabecular structure printed by laser 3D in this example is used for bone reconstruction and repair prosthesis after resection of pelvic tumors. The content is 1450ppm.

[0087] This embodiment specifically includes the following steps:

[0088] S1. Design of porous tantalum trabecular bone implant prosthesis: establish a 3D model of porous tantalum trabecu...

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Abstract

The invention discloses a manufacturing method of a medical bionic trabeculae structure multihole tantalum bone implant prosthesis through laser additive manufacturing-high-temperature vacuum sintering. The method comprises the following steps of establishing a bone defect prosthesis three-dimensional graph by using CT scanning data, performing transformation design on the bone defect prosthesis graph into a bionic trabeculae multihole shape of which the air porosity is 60-85%; designing a support, wherein the support sufficiently forms firm connection between a basal plate and a printed transplant prosthesis, and after printing is performed, the printed transplant prosthesis is easy to taken off from the printing basal plate by a manual method; and reducing the oxygen content of the transplant prosthesis and relieving stress by using an ultrahigh temperature vacuum sintering heat treatment method so as to obtain a qualified human body transplant prosthesis. The method can prevent pollution of wire cutting on the multihole tantalum transplant prosthesis, the oxygen content of the multihole tantalum transplant prosthesis is reduced, through a conventional technology, connection in series is performed, so that the manufacturing method of the medical bionic trabeculae structure multihole tantalum bone implant prosthesis through laser additive manufacturing-high-temperature vacuumsintering is formed, and the method is a complete technology manufacturing method.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and furthermore, the invention relates to a manufacturing method of laser additive manufacturing-high-temperature vacuum sintering medical bone imitation trabecular structure porous tantalum bone implant prosthesis. Background technique [0002] Compared with titanium alloy and cobalt-chromium alloy, tantalum has the advantage of not containing toxic and harmful metal elements, and has the biological advantages of inducing bone growth and anti-infection ability. It is recognized as the best metal material for bone repair in the medical field. The natural structure of human bones is called trabecular bone structure. The foreign traditional vapor deposition method to produce porous tantalum implants with bone trabecular structure for human implants has monopolized the Chinese market. It has a fixed size and does not fit the shape and shape required by the patient. size. [0003] Due...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28A61F2/30
CPCA61F2/28A61F2/30771A61F2/30942A61F2002/30784A61F2002/30943A61F2002/3097A61F2002/30985A61F2002/30968A61F2/468A61F2002/30955
Inventor 唐建中郭凯旋王国华姜常在周立波
Owner 湖南华翔医疗科技有限公司
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