Patent ID: 11718034

Abstract:
A three dimensional (3D) printing apparatus to print an implantable bone scaffold (IBS) in an aseptic environment is described. The 3D printing apparatus includes a sterile cartridge. The sterile cartridge contains a sterile printing material, a print nozzle, and a plunger. The 3D printing apparatus also includes a heater configured to indirectly heat the printing material. In addition, the 3D printing apparatus includes a cartridge receiver configured to retain the sterile cartridge. A sterile receiving plate is positioned below the print nozzle. A cover encompasses and maintains the sterile cartridge and the sterile receiving plate in an aseptic environment. A filter fan unit (FFU) overlays a section of the cover. Positive laminar filtered air flow created by the FFU maintains the aseptic environment inside a printing chamber. An ultraviolet light source irradiates the receiving plate. A movable diaphragm separates a printer mechanism, below the receiving plate, from the printing chamber.