In an aspect, the present disclosure is directed to a composite structure. The composite structure includes a three-dimensional (3-D) grid structure and at least one monolithic skin layer at least partially enveloping and securing the grid structure. As such, the grid structure is configured to stabilize the composite structure under at least one of: static local buckling and dynamic global buckling.

A micro-nano 3D printing device with multi-nozzles jet deposition driven by electric field of single flat plate electrode, including: a printing head module group, printing nozzle module group of any material, printing substrate of any material, flat plate electrode, printing platform, signal generator, high-voltage power supply, feeding module group, precision back pressure control module group, XYZ three-axis precision motion platform, positive pressure air circuit system, observation and positioning module, UV curing module, laser rangefinder, base, connection frame, first adjustable bracket, second adjustable bracket, and a third adjustable bracket; the device realizes high throughput micro-nano 3D printing of jet deposition, including different configuration implementation schemes like multi-materials with multi-nozzles, single material with multi-nozzles and single material with multi-nozzles array, improves the printing efficiency, and realizes multi-materials macro/micro/nano printing, high-aspect-ratio microstructure efficient manufacturing, simultaneous printing of heterogeneous materials, efficient manufacturing of large area micro-nano array structure and parallel manufacturing of 3D printing.

A micro-nano 3D printing device with multi-nozzles jet deposition driven by electric field of single flat plate electrode, including: a printing head module group, printing nozzle module group of any material, printing substrate of any material, flat plate electrode, printing platform, signal generator, high-voltage power supply, feeding module group, precision back pressure control module group, XYZ three-axis precision motion platform, positive pressure air circuit system, observation and positioning module, UV curing module, laser rangefinder, base, connection frame, first adjustable bracket, second adjustable bracket, and a third adjustable bracket; the device realizes high throughput micro-nano 3D printing of jet deposition, including different configuration implementation schemes like multi-materials with multi-nozzles, single material with multi-nozzles and single material with multi-nozzles array, improves the printing efficiency, and realizes multi-materials macro/micro/nano printing, high-aspect-ratio microstructure efficient manufacturing, simultaneous printing of heterogeneous materials, efficient manufacturing of large area micro-nano array structure and parallel manufacturing of 3D printing.

A support member for use in a sealing assembly of a patient interface device for delivering a flow of a breathing gas to the airway of a patient. The support member includes: a first end structured to be coupled to a frame member of the patent interface device; a second end structured to sealingly engage the face of a patient or to underlie a sealing flap which is structured to sealingly engage the face of a patient; and a sidewall which extends between the first end and the second end. The sidewall is formed from a plurality of beads of material.

A support member for use in a sealing assembly of a patient interface device for delivering a flow of a breathing gas to the airway of a patient. The support member includes: a first end structured to be coupled to a frame member of the patent interface device; a second end structured to sealingly engage the face of a patient or to underlie a sealing flap which is structured to sealingly engage the face of a patient; and a sidewall which extends between the first end and the second end. The sidewall is formed from a plurality of beads of material.

A process and printer systems for printing a three-dimensional object are disclosed. The processes may include providing a non-crosslinked peroxydicarbonate-branched polypropylene filament, flake, pellet, or powder adapted for one of a fused deposition modeling (ARBURG Plastic Freeforming) printer or a fused filament fabrication printer; and printing the non-crosslinked peroxydicarbonate-branched polypropylene with fused deposition modeling (ARBURG Plastic Freeforming) printer or a fused filament fabrication printer to form a three-dimensional article. The printer systems may include one or more print heads for printing a polymer provided in filament, powder, flake, or pellet form to form a three-dimensional article; and one or more feed systems for providing a non-crosslinked peroxydicarbonate-branched polypropylene to a respective print head.

A process and printer systems for printing a three-dimensional object are disclosed. The processes may include providing a non-crosslinked peroxydicarbonate-branched polypropylene filament, flake, pellet, or powder adapted for one of a fused deposition modeling (ARBURG Plastic Freeforming) printer or a fused filament fabrication printer; and printing the non-crosslinked peroxydicarbonate-branched polypropylene with fused deposition modeling (ARBURG Plastic Freeforming) printer or a fused filament fabrication printer to form a three-dimensional article. The printer systems may include one or more print heads for printing a polymer provided in filament, powder, flake, or pellet form to form a three-dimensional article; and one or more feed systems for providing a non-crosslinked peroxydicarbonate-branched polypropylene to a respective print head.

A method for producing a three-dimensional object by an additive manufacturing process includes introducing at least one manufacturing material fed in a flowable state from at least one feed-in opening of at least one feed-in needle into a supporting material. After being fed in, the at least one manufacturing material is cured, but it remains flexible or elastic after curing. The contour and/or position of at least one part of the three-dimensional object within the support material is detected by at least one sensor.

An implant shredder includes a base and a cutting member. The base includes a first chamber and a second chamber intercommunicating with the first chamber. The first chamber includes an inlet. The second chamber includes an outlet. The cutting member is received in the second chamber. The cutting member is driven by a driving member to rotate. The cutting member includes a plurality of cutting edges located on a circumference of a same radius. The plurality of cutting edges is rotatably disposed adjacent to a location intercommunicating with the first chamber. An implant forming method includes creating data of an outline of an implant; producing a shaping mold based on the data; and cutting a to-be-processed object with the implant shredder, then mixing the to-be-proceed object with a biological tissue glue to obtain a raw material, and filling the raw material into the shaping mold to form the implant.

Provided herein are devices and systems for depositing a material or manufacturing a product, such as a pharmaceutical dosage form, by additive manufacturing. Further provided are methods of using the devices and systems, as well as methods of manufacturing a product, such as a pharmaceutical dosage form, by additive manufacturing. In certain embodiments, the device includes a material supply system configured to melt an pressurized a material, a pressure sensor configured to detect a pressure of the material within the device, and a control switch comprising a sealing needle operable in an open position and closed position. The sealing needle extends through a feed channel containing the material and includes a taper end, wherein the tapered end of the sealing needle engages a tapered inner surface of a nozzle to inhibit flow of the material through the nozzle when the sealing needle is in the closed position.