In recent years, there have been earth-shaking changes in bio-based 3D printing technology at home and abroad. The main medical applications range from the following: â— 3D model of human organs for intraoperative reference and indirect navigation. â— 3D printing mandible, organ scaffold, skull, spine, pelvis, etc., clinical application. â— 3D printing of living tissues and organs is also constantly being explored. Is the human internal organ function printed using 3D technology? Can the surgical site be directly referenced by 3D printed matter? Yesterday, the First People's Hospital of Yunnan Province (Kunhua Hospital) once again used the 3D printing model to do “navigationâ€, successfully printed the patient's visceral simulation stereo model, and guided the doctor to treat the patient's pancreatic tumor and hepatic hemangioma in less than two hours. The gallbladder polyps are accurately removed. It is reported that a 3D printed model guided laparoscopic multi-organ combined resection is the first case at home and abroad. 3 "bad guys" meet in the abdomen Ms. Yang, 46, is a Dali Xiangyun person. She suddenly felt uncomfortable in the abdomen more than a month ago. “When standing, it hurts a lot.†Ms. Yang said she was suspected of being a tumor after being examined at a local hospital, so she transferred to Kunming. Further diagnosis and treatment was eventually diagnosed as pancreatic tumor, hepatic hemangioma and gallbladder polyps. These three "bad guys" are about to meet in Ms. Yang's abdomen, but how can they solve the three lesions at one time, so that Ms. Yang is less guilty? Sun Zhiwei, director of the Department of Hepatobiliary Surgery, said: "We thought at the time that if a 3D printed model was used, some of the patient's pancreas would not need to be removed." Sun Zhiwei said that the pancreas is the deepest organ of the human body. First, the hepatic hemangioma is surrounded by the hepatic vein. If the traditional surgical method is to solve three problems at a time, Ms. Yang has to suffer a lot of crimes. Not only does the pancreas need partial resection, but the incision for open surgery is at least 30. cm. 3D printing model for reference, improved cutting accuracy After discussing with Ms. Yang, the doctors in the Department of Hepatobiliary again asked for a 3D printed model to help. According to Ms. Yang's CT and MRI, the doctor printed a 1:1 model, marking the lesions, veins, and arteries in different colors, and based on the model, developed a surgical plan. With the guidance of this model, Ms. Yang originally needed an operation to open her abdomen. It only needs to open 4 holes of 3 cm or less in the abdomen, which can be done under laparoscopy. During the operation, the doctor placed the model next to the display while operating against the model. "The information provided by the plane is limited." Sun Zhiwei said, where the tumor is, what blood vessels are surrounded by the front and back, and to what extent the surgery will not damage the important tissues and blood vessels, which requires a doctor to combine. Experience to judge. However, with the 3D printing model, the doctor can more intuitively see the distance between the tumor and the various tissues, so that the lower knife is more accurate and the safety of the operation is also improved. From the actual surgical results, under the surgical guidance of the 3D printed model, the surgical injury is minimized during surgery, and the normal pancreatic tissue and spleen are preserved. Sun Zhi said frankly that the attempt to multi-organ 3D printing has further accumulated experience for 3D guidance of complex surgery and 3D printing of complex organs in the future.
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The world's first case: 3D printed visceral model "navigation" for surgery