It is not uncommon to use 3D printing to make human joints and bones, but it is not uncommon to use 3D printing to make fine vascular tissue. This new technology that can customize individualized human tissues and organs is becoming a new expectation for medical surgery.
Tan Zhikai, a teacher at the College of Biology, Hunan University, led a student to develop a bio-based three-dimensional printer that uses biopolymers such as polylactic acid/polycaprolactone (PLA/PCL) as raw materials and realizes rapid prototyping of three-dimensional entities. The instrument can quickly prepare biological tissues represented by small-caliber artificial blood vessels, and can also be used for clinical preparation of medical analysis models by merging with imaging data obtained by CT and MRI scans of patients.
Nowadays, vascular obstructive diseases in coronary heart disease and other parts have become an important disease threatening the public health of our country. The number of vascular bridging operations is increasing, and the demand for vascular materials is increasing. However, at present, most of the transplanted blood vessels used in clinical medicine are taken from the patient's body, and the source is limited, which is far from meeting the clinical needs. Artificial blood vessels have become a necessary solution.
Tan Zhikai said that this technology is not limited to printing artificial blood vessels, but also can be used as a "toolbox" to select different materials, geometries and sizes for the manufacture of various human tissues or organs. The future application in medicine is very broad.
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