Hong Kong doctors first use 3D printing technology for complex heart surgery

Hong Kong doctors first use 3D printing technology for complex heart surgery

Release date: 2016-05-26

The Chinese University of Hong Kong (CUHK) and the University of Hong Kong (HKU) have joined hands to apply 3D printing technology to complex cardiac surgery in Hong Kong to enhance the effectiveness and safety of surgical treatment. The Cardiology Department of the Department of Internal Medicine and Therapeutics of the University of Hong Kong and the Department of Mechanical Engineering of the School of Engineering of the University of Hong Kong collaborate to combine 3D printing technology with clinical applications to create 3D reconstructions through data collected by patient esophageal ultrasound imaging. The cardiac structure 3D silicone software model assists in preoperative planning and develops personalized interventional protocols for patients. The related technology has been applied to a complicated left atrial appendage occlusion case last year, and the patient's recovery is ideal. This case has been published in the medical journal Circulation: Cardiovascular Interventions.

Assist in preoperative planning to develop better treatment strategies

The heart structure is complex and varies from person to person, and the difficulty of performing a cardiac intervention is very high. Medical personnel may need to try more than one time during the procedure to confirm the optimal placement of the treatment instrument, resulting in an increased risk of cardiac surgery complications or even surgical failure.

In order to solve this problem, the Cardiology Department of the Department of Internal Medicine and Pharmacology of Zhongda Medical College has combined 3D printing technology and clinical application last year. Firstly, through the data obtained by transesophageal ultrasound imaging, the heart structure of the patient is analyzed from the 3D angle. The Department of Mechanical Engineering of the Hong Kong University of Engineering produced a 3D silica gel model to assist medical staff in making preoperative planning and developing a more complete surgical strategy.

Last year, a 78-year-old female patient who underwent left atrial appendage at Prince of Wales Hospital had a double-leafed left atrial appendage by transesophageal ultrasound before surgery. This structure increases the difficulty of occlusion, and medical personnel must There is a fairly thorough preoperative planning to more accurately place the occluder on both ends of the patient's left atrial appendage. Therefore, the team innovatively used 3D printing technology to assist with the surgical plan and used the modeled 3D software model to simulate the relevant treatment procedures before surgery.

The results show that the technology helps medical staff to more accurately position the instrument during surgery to reduce the risk of complications or surgical failure. Postoperative follow-up and evaluation showed that the patient was in good condition.

Help patients understand the surgery and train doctors clearly

Dr. Li Peiwei, an assistant professor of cardiology at the Department of Internal Medicine and Pharmacology, Zhongda Medical College, pointed out: "Using a material that mimics heart soft tissue, a 3D model based on the patient's heart structure can help doctors make better preoperative planning and improve the heart of patients. The structure of the patient, the patient himself can also have a clearer understanding of the surgery. This technology can also be applied to other complex cardiac surgery and cardiac specialist surgery training."

Dr. Zhang Chengqian, Honorary Clinical Assistant Professor of Department of Cardiology, Department of Internal Medicine and Therapeutics, Zhongda Medical College, said: "Because of the assistance of 3D printing technology, clinicians can perform simulated surgery, which can complete complicated surgery, which is challenging for processing. Sexual interventional cases are very helpful."

For the development of the combination of 3D printing technology and clinical medicine, Dr. Guo Jiawei, assistant professor of mechanical engineering at the Hong Kong University of Engineering, who is responsible for providing this technology and shaping the 3D silica gel model of the heart structure, said: "The advanced model of geometric model and 3D printing technology can make the heart When performing complex cardiovascular therapy, doctors can increase confidence in safety, accuracy and performance."

Dr. Li Peiwei added that the team will collect more information and data in the future to further determine and study the application of 3D printing technology in the treatment of heart disease.

Source: Tiangongshe

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