Medical bones have been made, but the 3D printing organ is still far away.
Technology for the replacement of artificial double elbow joints in patients with rheumatoid arthritis, British Welsh surgeons used 3D printers to repair the facial bones of traffic accident patients, a hospital in the United States used 3D printing technology to create a bracket to open the airway blocked by the baby... 3D printing surgery It is becoming more and more common in medical clinics.
According to statistics, only 10,000 of the 1.5 million patients with organ failure in China can get organ transplants, and more patients can only deteriorate or even die while waiting for ligands. If 3D printing can solve this problem, it will undoubtedly become the focus of the market. In the "3D printing model and navigation board clinical application Qianhai Salon" held recently, industry experts said that 3D printing is still mainly used for assistive and implantable medical operations, becoming a booster for personalized medicine and precision medicine . Although the use of biological 3D printing technology, people can already "manufacture" human tissues or simple organs such as skin, bones, etc., but to print portable living organs still face bottlenecks in technology, materials and policies and regulations, but to solve this series of problems There is still a long way to go.
application
"Preview" surgery on artificial vertebral body model
Mr. Li from Henan is in his prime, but he has been plagued by high lumbar disc herniation for more than 10 years. His five segments of the lumbar vertebrae have lesions, the condition is getting worse, standing can not exceed 5 minutes, sitting can not exceed half an hour, walking 50 meters will stop to rest, seriously affecting work and daily life.
Surgical treatment is a way to completely solve its pain. However, the operation is extremely difficult, especially in patients with high disc herniation, spinal cord and cauda equina nerve involvement, and the operation requirements are extremely accurate. The slightest difference may result in severe damage to the sputum or nerve function. These problems have made Mr. Li discouraged.
In July of this year, at the Shenzhen Medical College of Southern Medical University, Professor Sang Hongxun, the leader of the Department of Orthopaedics, adopted a 3D printed vertebral body model and guide navigation technology to perform precise minimally invasive surgery. Using 3D printing technology, a vertebral body model with a shape and length of 1:1 of the spine of the patient can be manufactured to accurately reflect the anatomy of the vertebral body, spinal canal and pedicle, which is conducive to the doctor to design a precise surgical plan. Intraoperative, through the 3D printed guide for navigation, more accurate spinal pedicle screw implantation, to avoid nerve damage caused by screw misplantation. "The emergence of digital technology such as 3D printing has made the lumbar spine surgery farewell to the 'experience era' and has entered the era of precision treatment, which is safer, less invasive and more efficient," said Sang Hongxun. Postoperative patients with low back pain and lower extremity radioactive pain quickly disappeared. On the second postoperative day, they walked out of bed after wearing the waist, without obvious discomfort. The postoperative recovery was good, and the pain that had plagued the patient for more than ten years was solved. He was discharged to his hometown 1 week after the operation.
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3D printing technology was born in the United States in the 1980s and is known as the new technology that led the third industrial revolution. 3D printing has many advantages, such as eliminating complicated processes, reducing equipment purchase costs, breaking the limits of design space, etc., making large-scale personalized production possible. It has been used in the mechanical industry, consumer electronics, aerospace, automotive manufacturing and other fields. With the continuous advancement of technology and the diversification of printed materials, it has begun to play an important role in modern medicine.
Through the processing and analysis of the patient's medical image data, the engineer restores the patient's lesion model by 1:1. The doctor can complete the planning and rehearsal of the operation on the model, and overcome the difficulties that may occur in the operation in advance to avoid the risk, thus effectively improving The surgical effect also provides great help for today's personalized medicine, precision medicine and digital medicine. "In the past, the implementation of orthopedic surgery relied mainly on CT and X-ray films for surgical analysis. However, the shortcomings of these analytical methods are mainly that they are too flat and not intuitive enough." Sang Hongxun said that doctors will advance patients in advance through 3D printing technology. The bone data is input into the computer, and the model is printed through a 3D printer, and the clinical treatment is more precise.
Professor Li Jianwei from the Guangdong Provincial Key Biomechanics Laboratory of Southern Medical University said that there are four levels of medical 3D printing, namely medical model 3D printing, implant 3D printing, biological 3D printing, and tissue engineering and organ 3D printing. China's medical 3D printing technology started late, the current clinical application is mainly medical model 3D printing and implant 3D printing, biological 3D printing applications are not many, and tissue engineering and organ 3D printing has not yet begun.
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