At present, the biggest challenge of clinical application of 3D printing is still in the charging link. As the charging for 3D printing of medical projects has not been approved, most of them are still using clinical research funds for clinical practice, but this is not a long-term solution. Recently, Professor Liu Jinfan, director of the Shanghai Children's Congenital Heart Disease Research Institute, said in an interview that the clinical application of 3D printing at this stage has been applied in the CFDA (National Food and Drug Administration) application process. It is expected to be available for one to two years. Batch.
Computer modeling is more important than "printing"
"For the treatment of children with complex congenital heart disease, the operation time will often exceed 5 to 8 hours. And if we can print and simulate before surgery, we can let doctors better understand the expectation of surgery. Increase the success rate of surgery." Liu Jin said.
According to him, after 10 years of development, the application of 3D printing in the field of cardiac surgery has already come out of the initial stage of heart model printing. Computer simulation + printing can provide a better solution for medical practitioners.
Taking a hemodynamic calculation simulation study successfully completed by the “Pediatric 3D Digital Medical Research Center†affiliated to the Shanghai Children's Medical Center as an example, the virtual surgery design and computational hemodynamic simulations vividly demonstrated the predictive surgery. Quantitative changes in hemodynamic parameters and blood flow trajectories during the process provide reliable information for reducing the risk of surgery.
It is well known that the heart is the earliest organ that is formed and functions during the development of human embryos. Its development is closely related to hemodynamic effects. When applied to treatment, computer hemodynamic characteristics can be simulated and analyzed by clinicians. Individualized medical image data three-dimensional reconstruction computer-aided 3D virtual surgery design to find a surgical program that meets the patient's individualized optimal hemodynamic status.
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At present, this technology has provided more accurate treatments for patients such as extracardiac FONTAN surgery, pulmonary artery circumflex surgery, improved lung shunt, airway malformation, and sternal deformity.
In addition, researchers at the research center can use computer reconstruction technology to 3D print individualized anatomical models of patients, helping doctors to more intuitively understand the individualized cardiovascular anatomy of patients, such as the shape, size and location of heart defects. , degree, and structure of surrounding organizations.
"For difficult and complicated rare patients, we would recommend using such a 3D solution. If it is promoted to the clinic, 3% to 5% of heart patients can benefit from it in the future." Liu Jin said.
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