Release date: 2014-12-22

You must have seen the magic of 3D printing technology, which helps people with disabilities get their nose, eyeballs, fingers or limbs, and even internal organs. But in fact, there are not many cases of relying on 3D printing technology to complete personalized prostheses, because the high cost of $4,000 is a serious limitation of its clinical application.

Yesterday, Professor Fu Jianzhong from the School of Mechanical Engineering of Zhejiang University showed the reporter a medical prosthetic ear using 3D printing technology. This ear is not only realistic, but also has a very low production cost of less than 200 yuan.

"In the case of the ear, it takes at least 10 weeks to use the traditional prosthetic method. Just like wax painting, the doctor needs to "copy" the patient's ear, which not only consumes a lot of time on both sides, but also is difficult to completely restore. The labor cost and material cost are very high. Now, it takes only a dozen seconds for the patient to scan it.” Xue Guanghuai, a graduate student in mechanical engineering at Zhejiang University, is participating in the project. He told reporters that the biggest feature of the project. It is the development of ultra-low cost prosthesis manufacturing technology, which provides the possibility of large-scale clinical application of customized prosthesis.

It is reported that the prosthesis has been widely used in the repair of human maxillofacial injuries. The application of ear, nose and eye prosthesis can reshape the patient's image and help them get out of the shadow of injury.

Traditional personalized custom prosthesis has a long cycle and is expensive, which seriously restricts its clinical application. A British company has developed a prosthetic manufacturing technology based on 3D printing. Due to the use of expensive industrial grade printers, the cost of manufacturing is comparable to traditional technology. The cost of a single piece of false ear or nose still costs $4,000. Lack of competitiveness.

"Now the development of desktop-level 3D printing technology is very mature, the price is already comparable to that of personal computers, and the printing cost is extremely low. However, due to its low precision and serious surface step effect, its application is limited to civilian fields such as teaching and enthusiasts. If you can't find industrial applications, the development of desktop 3D printing technology will also encounter bottlenecks," Xue Guanghuai said.

The reporter found that, unlike ordinary 3D printing products, Professor Fu Jianzhong's 3D ear surface is particularly smooth and feels no rough feeling.

“After scanning the ear, we first printed a mold with engineering plastic 3D. After polishing, we can use the silicone casting to obtain the prosthesis. It takes only 6 hours to make an ear, very fast.” Xue Guanghuai said This solves the problem of long-term, high-cost, and difficult-to-use custom-made soft prosthesis, which reduces the cost from $4,000 to $30.

At the same time, due to the use of desktop-level 3D printers, patients or doctors can create personalized prostheses in their own homes, which undoubtedly greatly reduces the threshold of prosthesis manufacturing, and fundamentally solves the problem of over-costing the application of prosthesis in clinical practice. problem.

In addition to making prostheses, this technology can be directly applied to areas where personalization needs such as cosmetic effects, masks and tissue engineering are strong.

Source: Daily Business Daily

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