Porous and microporous parts prepared by additive manufacturing as disclosed herein are useful in medical and non-medical applications. The parts are prepared from a composition containing both a solvent soluble component and a solvent insoluble component. After a part is printed by an additive manufacturing process it is exposed to solvent to extract solvent soluble component away from the printed part, resulting in a part having surface cavities.

Porous and microporous parts prepared by additive manufacturing as disclosed herein are useful in medical and non-medical applications. The parts are prepared from a composition containing both a solvent soluble component and a solvent insoluble component. After a part is printed by an additive manufacturing process it is exposed to solvent to extract solvent soluble component away from the printed part, resulting in a part having surface cavities.

A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

The present invention relates to a biodegradable PLA filament composition for molding a porous structure. The biodegradable PLA filament composition for molding a porous structure according to one embodiment of the present invention includes polylactic acid (PLA) in 50% by weight to 60% by weight; polybutylene succinate (PBS) in 20% by weight to 30% by weight; polybutylene adipate terephthalate (PBAT) in 7% by weight to 9% by weight; an additive in 0.1% by weight to 1% by weight; a crystallization nucleating agent in 0.1% by weight to 1% by weight; a natural grapefruit seed powder (Jamongci_genu pectin type) in 0.1% by weight to 2% by weight; an inorganic filler in 1% by weight to 10% by weight; and a crosslinking agent in 0.001% by weight to 10% by weight.

The present invention relates to a biodegradable PLA filament composition for molding a porous structure. The biodegradable PLA filament composition for molding a porous structure according to one embodiment of the present invention includes polylactic acid (PLA) in 50% by weight to 60% by weight; polybutylene succinate (PBS) in 20% by weight to 30% by weight; polybutylene adipate terephthalate (PBAT) in 7% by weight to 9% by weight; an additive in 0.1% by weight to 1% by weight; a crystallization nucleating agent in 0.1% by weight to 1% by weight; a natural grapefruit seed powder (Jamongci_genu pectin type) in 0.1% by weight to 2% by weight; an inorganic filler in 1% by weight to 10% by weight; and a crosslinking agent in 0.001% by weight to 10% by weight.

An NC device as a numerical control device controls an additive manufacturing apparatus for producing an object by layering, on a workpiece, a material melted by being irradiated with a beam. The NC device includes: a feature quantity extracting unit that extracts, from image data, a feature quantity for determining a welding state that is a state where a molten material is added to the workpiece; and a process map creating unit that creates a process map in which a shape of the object and a layering condition are associated with each other. The layering condition is selected from among a plurality of layering conditions on the basis of a result of determination of the welding state, and includes at least one of beam intensity and a supply amount of a material.

An NC device as a numerical control device controls an additive manufacturing apparatus for producing an object by layering, on a workpiece, a material melted by being irradiated with a beam. The NC device includes: a feature quantity extracting unit that extracts, from image data, a feature quantity for determining a welding state that is a state where a molten material is added to the workpiece; and a process map creating unit that creates a process map in which a shape of the object and a layering condition are associated with each other. The layering condition is selected from among a plurality of layering conditions on the basis of a result of determination of the welding state, and includes at least one of beam intensity and a supply amount of a material.

A biodegradable flow diverting device (BFDD) that will regulate blood flow into an aneurysmal sac, act as a scaffold for endothelization at the neck of an aneurysm, and degrade after successful dissolution of aneurysm and remodeling of blood vessel. This BFDD and associated fabrication method have the following features: (1) This is a non-braided FDD. The pore shapes, sizes, architectures (especially at the inlet and outlet of the pores), pore densities and porosities can be controlled for the optimum performance depending on the blood vessel and aneurysmal morphologies from patient MRI images, (2) BFDD is developed on a rotary arm with programmable variable speed and diameter in conjunction with a micromotion stage (3) Fabrication system can take any material including blended/composite biomaterials by adjusting temperature of the electro-melt extruder/needle and (4) Fabrication system is compatible with CAM (computer aided manufacturing) software and able to operate based on the adapted G-code.

A biodegradable flow diverting device (BFDD) that will regulate blood flow into an aneurysmal sac, act as a scaffold for endothelization at the neck of an aneurysm, and degrade after successful dissolution of aneurysm and remodeling of blood vessel. This BFDD and associated fabrication method have the following features: (1) This is a non-braided FDD. The pore shapes, sizes, architectures (especially at the inlet and outlet of the pores), pore densities and porosities can be controlled for the optimum performance depending on the blood vessel and aneurysmal morphologies from patient MRI images, (2) BFDD is developed on a rotary arm with programmable variable speed and diameter in conjunction with a micromotion stage (3) Fabrication system can take any material including blended/composite biomaterials by adjusting temperature of the electro-melt extruder/needle and (4) Fabrication system is compatible with CAM (computer aided manufacturing) software and able to operate based on the adapted G-code.