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Objet30

Manufactured by Stratasys
Sourced in United States

The Objet30 is a compact desktop 3D printer designed for professional use. It offers high-resolution printing capabilities for a variety of materials, enabling the creation of detailed and precise 3D models and prototypes.

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7 protocols using objet30

1

3D Printed Personalized Face Mask Cushions

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The frames were 3D printed in VeroClear material (Objet30, Stratasys, Israel). The frame rings were 3D printed in PC-ISO material (Fortus 450mc, Stratasys, Israel). The personalized cushions were 3D printed in three different biocompatible (a minimum of ISO 10993-5 and 10993-10) soft materials:

Silicone urethane (SU) (Sil30, A-35, Carbon 3D, USA) on a DLS printer (M3 Max, Carbon3D, USA), resulting in two masks: SUsmall and SUlarge,

Silicone (Amsil 20501, A-50, Elkem Silicones, Norway) on a FDM printer (3D4Makers, Netherlands and Purpose AM Systems, Latvia), resulting in two masks: Sismall and Silarge

Soft photopolymer resin (MED414, A-50, Loctite, Henkel, Germany) on a DLP printer (OriginOne, Stratasys, Israel), resulting in two masks: SPRsmall and SPRlarge.

Figure 2 shows examples of masks produced in these different soft materials.

An overview of the personalized cushion materials. From left to right: silicone urethane (SU) printed on a DLS printer, silicone (Si) printed on an FDM printer, and soft photopolymer resin (SPR) printed on a DLP printer

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2

Pneumatic Gripper for Micro-CT and Robotic Manipulation

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The grippers in this work consisted of 12 filaments arranged in a pattern of two concentric circles with a 50-mm and a 25-mm diameter. The filaments were connected to a pneumatic manifold to allow simultaneous external fluidic control of their pressure state. The manifold was printed on an Objet30 polyjet printer in VeroClear rigid resin (Stratasys). The manifold was designed with an interchangeable bracket for mounting directly on a stationary support structure for micro-CT scans, mounting to an Instron material-testing machine, and mounting on a UR5 robot arm. For the micro-CT scans and pull-force testing (on the material testing machine), the filament pressure was manually controlled with a regulator and three-way valve to switch the filaments between their operating pressure and ambient pressure. For the robot-arm grasping tests, a custom pressure controller with solenoid valves was used for automated switching between ambient and operating pressures. The arm position and gripper pressure were both controlled via ROS (Robot Operating System). In all tests, the operating pressure of the filaments was set to 172 kPa. The filaments were fabricated to all operate at the same pressure using dip-coating methods described by Becker et al. (41 ). More details regarding testing, fluid control, simulations, hardware, and fabrication can be found in SI Appendix, SI Text.
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3

Prototyping with In-House Fabrication

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Apart from some standard components such as connectors and resistors, everything was built in-house at the prototyping facility TrollLABS at the Norwegian University for Science and Technology (NTNU, Trondheim, NO). Namely, the production relies on a laser cutter (Gravograph LS1000 XP, Gravotech Marking SAS, Rillieux-la-Pape, FR), a high-end 3D-printer (Objet30, Stratasys, Rehovot, IS, in combination with the same company's VeroWhitePlus material), a CNC mill (Mazak VCN-705E, Mazak corp., Florence, KY, US), as well as soldering equipment.
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4

3D Printed Osteotomy Guide for Craniofacial Surgery

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A preoperative craniofacial CT scan (64-row spiral CT; Philips) was performed. The CT data were imported into the digital design software platform ProPlanCMF 3. 0 (Materialise) for the 3D reconstruction of the skull (Fig. 1A–C). Osteotomy and shaping were performed in the 3D model to determine the osteotomy path, movement direction, and distance. In addition to the extent of the deformity of the skull, the osteotomy path also takes into account the intracranial malformation of the bony crest and the intracranial brain tissue. By trying different planes on the 3D model, the most suitable osteotomy plane can be determined. After that, the final ORH osteotomy guide was printed by a 3D printer (Objet 30; Stratasys) using photosensitive resin. In addition, a 1:1 plaster model of the skull can be printed by a 3D printer (Z Printer 350; 3D System) (Fig. 1D). The osteotomy guide can be placed on the model before surgery to draw the osteotomy line and perform a surgical simulation of osteotomy on the model to verify the suitability of the produced guide.
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5

3D Printed Microfluidic µFFE Device

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The microfluidic of the µFFE device was fabricated by CAD model 3D printing (Figure 2a). The file in STL format was preprocessed by an InkJet 3D printing system (Objet 30, Stratasys, Rehovot, Isareal) using Verowhiteplus RGD835 resin and exploiting both the “glossy” and the “matte” features. After that, a 750 μm thick polymethyl methacrylate (PMMA, Evonik Industries, Essen, Germany) cover was used to seal the microfluidic chip. In detail, the top and the bottom of the device were washed by isopropanol (Merck, Darmstadt, Germany) and flushed by a nitrogen flux before sealing, then, to achieve a uniform and irreversible bonding, the 3D printed part was sealed with the cover using as a glue the Poly(ethylene glycol) diacrylate (PEGDA) 575 (Merck, Darmstadt, Germany) mixed with 1% IRGACURE 819 (Merck, Darmstadt, Germany). The bonding was achieved by clamping the whole structure inside an aluminum frame and baking for 20 min on a hot plate at 120 °C to obtain the full curing of the resin. Finally, two stainless steel wire electrodes were manually inserted in the corresponding lateral channels (Figure 2b).
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6

3D Printing of Biocompatible Microfluidic Chambers

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Chambers were designed using 3D CAD software (Autodesk Inventor 2015, student edition) as 5 mm diameter semi-spheres with 0.5 mm thick walls. 1 mm diameter pores were distributed uniformly on the surface. These were printed with a biocompatible acrylic/acrylate modelling material (Veroblue RGD840, Stratasys) in an Objet30 3D printer (Stratasys, USA). Following print completion, support material (FullCure 705, Stratasys) was removed by immersing in 1% sodium hydroxide solution for 3 h. Chambers were washed in distilled water and sterilized by exposure to UV light for 30 min (Fig. 1C).
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7

Image-Guided Portable Neuronavigation System

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The portable system combines a MotionCam-3D M camera with the Polaris Vicra optical position sensor (Northern Digital Inc.) colocated in a single arm with a drape holder (Fig. 1C-F). The arm is attached to a cart (GCX Medical Mounting Solutions, GCX Corp.) that includes a screen as the user interface and a personal computer running the software (Windows 10 64-bit OS on an AMD Ryzen 2990WX 32 core central processing unit [CPU], Nvidia RTX 3090 Ti graphics processing unit [GPU], and 72 GB RAM).
The experimental catheters were manufactured to be the same diameter of a traditional EVD using radioopaque materials in order to visualize them on postprocedure CT scans (polytetrafluoroethylene [PTFE] plastic rod inside a DragonPlate carbon fiber tube). The handheld optical tracker was custom-made with MIC-6 aluminum cast and Vicra position sensors and was designed to allow for easy catheter loading and detachment. To secure the catheters in position after placement within the cadavers, a set of custom cranial bolts were designed to be fitted into a burr hole and included a movable hollow stem (through which the catheter was inserted) in a ball-and-socket configuration with a lockable thumbscrew, which was used to fix the angle and depth of the catheter. The bolts were fabricated on an Objet30 (Stratasys) inkjet-based 3D printer from VeroClear (RGD810) resin.
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