[Dry goods] 3D printing combined with the application of the medical industry white paper (with full text)

The design process of 3D printing is to first model the computer-aided design (CAD) or computer animation modeling software, and then “partition” the completed 3D model into a layer-by-layer section to guide the printer to print layer by layer. 3D printing differs from traditional machining techniques, which are usually achieved using cutting or drilling techniques (ie, material reduction processes). In the past, additive manufacturing was often used to make models in mold manufacturing, industrial design, etc., and is now being used for direct manufacturing of some products. In particular, some high-value applications (such as hip joints, teeth or some aircraft parts) already have parts printed using this technology, which means the popularity of the "3D printing" technology.

3D printing technology can provide a more complete and personalized solution for the medical industry ; bio 3D printing technology will promote the research of artificial living tissues and organs in the field of regenerative medicine. In terms of personalized solutions, typical applications include 3D surgical pre-planning models, surgical guides, 3D printed implants, and rehabilitation medical devices such as prostheses and hearing aids. In the field of regenerative medicine, researchers have made remarkable progress in the use of bio-3D printing technology to cultivate artificial organs. The white paper will present the application of 3D printing technology in the medical industry in the form of application cases.

First, 3D printing and surgical planning model

The latest application of 3D printing in the diagnosis and treatment of liver tumors. Department of Hepatobiliary Medicine, Zhujiang Hospital, Southern Medical University and Department of Anatomy, Southern Medical University, Guangdong Provincial Key Laboratory of Medical Biomechanics, combined with 3D visualization, 3D printing and 3D laparoscopic techniques for surgical diagnosis and treatment of liver tumors.

Among them, the data of the 3D printing model is fast image segmentation, registration and three-dimensional reconstruction of the imported two-dimensional CT data through the three-dimensional visualization software (MI-3DVS). After obtaining the STL 3D image file available for printing, a 1:1 physical 3D model was printed by a 3D SystemsSpectrum ZTM 510 3D printing device. The 1:1 model of 3D printing reflects the spatial relationship between liver tumors and vessels. Doctor by 3D printing liver model

Preoperative planning and surgical guidance during surgery are performed prior to surgery. During laparoscopic liver resection, the doctor brought the 3D printed model into the operating room and compared it with the surgery. By adjusting the 3D printed model and placing it in the best anatomical position, it provided intuitive navigation for the key steps of the operation and finally completed successfully. Surgery and reduce surgery time and complications.

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