3D printing assisted high risk tumor surgery

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7-Year-old Successful operation of a few hospitals Yong-eating crabs will be printed in the three-dimensional clinical treatment

Compared with 1:1 of patients with bone damage model, early simulation surgery, the doctor first taste the sweetness: surgery more confidence, and the patient's family to explain the disease is also more relaxed. This is the gospel that the 3D printing technology is beginning to apply to clinical medicine. At present, there are a few hospitals in Shenzhen Yong eat crabs.

It is understood that the current Shenzhen 3D printing technology medical applications are still in the initial stage, mainly the printing model for the design of surgery before the difficult operation plan, but also in the country. and 3D printing "jaw", "pelvic bone" and other embedded materials in the country is still facing some policy access issues. As for the most anticipated 3D print liver, heart and other human organs, when can come out from the laboratory to complete the transformation of the results, still waiting for scientists to explore.

The national Ministry of Industry is currently leading the development of the national production of the expansion of materials manufacturing industries (2014-2016), which refers to the development of the printing and medical devices as the focus of the development of the latter. In the interview process, doctors are very optimistic that with the biology, materials and printing technology maturity, as well as related policy development, more patients will enjoy the 3D printing to the benefits of treatment.

Wen/journalist Baowenjun correspondent Niffifei, Sun Jialong

Save time by comparing the model with the reset

Orthopaedic Department of Shekou People's Hospital, Nanshan District, Shenzhen, began to apply 3D printing technology to clinical surgery in April this year, which should be the earliest in Shenzhen, and has been applied to 3 orthopedic surgeries. "Mainly used in the severe condition of the joint fracture, especially the ankle joint fracture." Because there are many important vascular nerves around the joints, it is especially necessary for experienced physicians to proceed cautiously. "Orthopedic director Lizhihui of Shekou People's Hospital, Shenzhen, told

Recently, a 60-year-old woman fell from the staircase caused ankle damage, to the hospital for treatment, because the elderly themselves with osteoporosis, so the disease is more serious, multiple debris needs to reposition. And the hospital can get three-dimensional data by CT scan, and then modify the 3D image with software, and finally get 1:1 simulation local fracture model.

The white model, printed by 3D technology, can present one by one of the old lady's injuries, fractures and dislocations. "3D printing technology is 0.1 millimeters or less accurate, and the advantage is that the model is exactly the same as the patient's injury site." "Lizhihui said.

After getting the 3D model, Lizhihui and his colleagues took the model and took it to the table, which, when compared to the fracture, improved accuracy, which would have taken 1.5 hours of surgery and 70 minutes to complete. After reviewing the film, the fracture alignment, the line is good, the internal fixed position ideal.

Preoperative simulation of cervical spine tumor can greatly improve the success rate

3D printing technology is more good in treating complex tumors. Shenzhen the second People's Hospital this year at the end of September this technique was used to perform a preoperative simulation of a 7-year-old cervical spine tumor.

"7-Year-old children have a very rare tumor, pediatric tumors are often very high levels of malignancy." "The orthopedic director of the hospital, Shenzhen bone and soft Tissue Cancer Association," Zeng Tenghui told reporters. And this child's tumor is located in the first cervical vertebrae, in the skull and Spine junction, the location is special, adjacent to the neck of the great arteries and medulla oblongata, the operation risk is very high, at any time life risk, difficult; and the child's skeletal development is immature, will mutate, so very much need to understand the organizational structure first.

In order to treat the child, the city two hospital uses the 3D printing technology to the child to design the surgical plan, prints the child cervical vertebra skeleton, the blood vessel, the tumour and so on the organization, the preoperative simulation operation. From data acquisition to model printing, it took a total of three or four days.

"Because we have a clear three-dimensional model, we take endoscopic minimally invasive surgery to remove tumors through the mouth," he said. This is rarely reported abroad. "Guangdong Province Medical Association Spine Professional Standing Committee Yang Xinjian Introduction." And the operation is very smooth, the child after the first day of operation began to eat, and activities in the fields. Mother of the child, said the woman, the child surgery is very good, now the biggest hope is that children can grow up healthily.

The reporter learned that the two hospitals are to transfer data to other cities for printing, the hospital currently has no equipment. However, the Shenzhen second People's Hospital is planning to purchase 3D printers, "The application has now been submitted to the Shenzhen Hospital Center." "Zeng Tenghui told

Convenient communication between doctors and patients through 3D printing model

It's very exciting for the doctors to say that it's easier to communicate with the patient's family. "Previously, the results of CT and MRI were taken to explain the patient's condition. Even if I'm drawing, the patient and the family are still a smattering. Zeng Tenghui said, now the model to the family, the family looked at the location of the patient, intuitive image, it is easy to understand.

And can be simulated surgery in advance, but also increase the confidence of doctors. "Traditional imaging methods are difficult to fully understand the fracture situation, and 3D print three-dimensional physical model can find a lot of hidden information." "Lizhihui said. For complex joint reduction operations, the imaging of general CT and MRI can be more accurately imagined by experienced physicians. Now by reference to the stereo model, doctors can perform preoperative evaluation, diagnosis and classification of the decision of the operation plan, especially to be able to perform preoperative operation can be simulated, reset and fixation. This technique is also useful for the day-to-day training of physicians and will be more in-depth in the treatment of joints.

In addition to orthopedics, more and more doctors in other departments have heard of this technology is also very interested in trying. Lizhihui told reporters that a surgeon in general surgery was also interested in the possibility of using liver cancer for surgery.

3D Print accurately build pelvis

The reporter learned that 3D printing technology is applied to medical treatment not only in Shenzhen, this August, the third Hospital of Peking University used the technology of adding material to manufacture the first artificial axis in China, which was successfully used in patients with malignant tumor. A number of doctors told reporters that the North Junior college such a trial is very rare, but also for the purpose of scientific research. Shenzhen Health Planning Committee in response to this reporter, said that the current 3D printing technology does not apply to the human body, does not involve technology access, so the Commission has no relevant policies.

Many doctors have called for a speedy release of the technology in medical applications. Using this technique, Zeng Tenghui says, "nose" and "ears" can be used to repair the injuries caused by car crashes, but this involves access to medical devices. Lizhihui said it also involves medical ethics issues.

Lizhihui says there are only a few major types of steel plates and screws for orthopedic surgery, in surgery, orthopedic surgeons can only rely on experience to choose the curvature and length of the most suitable model for the patient, "if the future use of 3D printing material implantation, can be customized in advance based on personal information of titanium steel plate, titanium nails, the operation of direct use, can reduce the risk of surgery." "Can also greatly save the patient's medical costs." "For example, cancer patients after the pelvic resection, to replace the artificial alloy half pelvis, due to the production of materials consumed, the total price of 200,000 yuan." But 3D printing requires a waste of material and a more accurate production of the pelvis in accordance with the patient, cost only tens of thousands of yuan. "Lizhihui said.

Foreign: The liver, heart and other organs have been successfully printed

Shenzhen Institute of Innovation and Design Institute of Innovation and application director Gio Lihua introduced, 3D printing technology in the field of medical applications can be divided into biological printing and structural printing, biological printing, including cell printing, tissue engineering printing. At present, the application of the rapid development of structural printing, "such as tracheal stent printing, bone printing, spine printing, etc. have been successfully applied to medical surgery." "Gio Lihua said.

The most imaginative space is 3D bio-printing technology. The use of stem cells for materials, according to 3D molding technology for manufacturing, once the cell is correct, it can grow into human organs, and "printing" of the new tissue will form a self-contained blood vessels and internal structure. Gio Lihua said that foreign countries have successfully printed a number of organs, including blood vessels, human ears, bones, liver and heart, and some have been successful in clinical trials.