3d printing devices including mixing nozzles

This invention describes a microfluidic nozzle for 3D printing that mixes at least four different materials inside a chamber using a spinning impeller. At least two of these materials are precisely fed into the chamber by individual rotary pumps before being extruded. This allows for controlled, on-demand blending of multiple substances right before they are printed.

Why it matters: Since 2018, multi-material 3D printing has advanced significantly, especially for composites and pharmaceuticals. This microfluidic mixing nozzle could now precisely create complex material gradients or drug formulations with greater control.

Status: ExpiredProtection ended and was never renewed
How hard to build: SpecializedMicrofluidic components, custom impeller, precision pumps.

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