The core technology AMT owns is a proprietary three-dimensional (3D) multi-axial printing technology.
Traditionally, 3D printing has been widely used to make prototypes and tissue engineering scaffolds of various shapes and structures. 3D printing technology allows the fabrication of complex scaffold geometries with fully interconnected porous structures. However, when it comes to printing porous tubular structures, 3D printing is a time-consuming process due to its layer by layer fabrication nature. Very often, additional steps are needed for removing the supporting structures/materials from the scaffolds. Also, the poor surface finish and micro defects of the 3D printed scaffolds will result in early mechanical failure of the scaffolds in load bearing applications. AMT has developed a novel precision multi-axial 3D printing technology to overcome those issues. This novel multi-axial process is an extremely efficient process when used to produce porous tubular scaffolds, such as cardiovascular stents.
Very common, cardiovascular stents are produced through a laser-cutting process, during which a femto-laser pulse is employed to cut stents from a thin wall tubing. This manufacture process is a multi-step process during which most of the materials are wasted. Compared to this costly and time consuming laser cut process, the 3D multi-axial printing technology can produce stents from polymer powder/pellets in a single printing step. A typical 3x15 mm coronary stent can be produced in less than 1 minute.
With this proprietary technology, various bioresorbable scaffolds for different applications, such as for blood vessel, tracheal and esophageal repair/regeneration, can also be directly printed.