scholarly journals Personalized 3D Printed Surgical Tool for Guiding the Chisel during Hump Reduction in Rhinoplasty

2018 ◽  
Vol 6 (2) ◽  
pp. e1668 ◽  
Author(s):  
Hugo Herrero Antón de Vez ◽  
Javier Herrero Jover ◽  
Claudio Silva-Vergara
Keyword(s):  
Surgical Tool ◽  
3D Printed ◽  
Hump Reduction

3D-Printed Craniosynostosis Model: New Simulation Surgical Tool

2018 ◽  
Vol 109 ◽  
pp. 356-361 ◽  
Author(s):  
Enrico Ghizoni ◽  
João Paulo Sant Ana Santos de Souza ◽  
Cassio Eduardo Raposo-Amaral ◽  
Rafael Denadai ◽  
Humberto Belém de Aquino ◽  
...  
Keyword(s):  
Surgical Tool ◽  
3D Printed

Force Comparison of Commercially Available Transfascial Suture Passers

2017 ◽  
Vol 24 (3) ◽  
pp. 301-308 ◽  
Author(s):  
Alexander J. Shope ◽  
Joshua S. Winder ◽  
Jonathan T. Bliggenstorfer ◽  
Kristen T. Crowell ◽  
Randy S. Haluck ◽  
...  
Keyword(s):  
Abdominal Wall ◽  
Polypropylene Mesh ◽  
Porcine Model ◽  
Ex Vivo ◽  
Composite Mesh ◽  
Insertion Force ◽  
Surgical Tool ◽  
Prolene Suture ◽  
3D Printed ◽  
Transfascial Suture

Background. Transfascial suture passers (TSPs) are a commonly used surgical tool available in a wide array of tip configurations. We assessed the insertion force of various TSPs in an ex vivo porcine model. Methods. Uniform sections of porcine abdominal wall were secured to a 3D-printed platform. Nine TSPs were passed through the abdominal wall both without and with prolene suture under the following scenarios: abdominal wall only and abdominal wall plus underlay ePTFE or composite ePTFE/polypropylene mesh. Insertion forces were recorded in Newton (N). Results. When passed without suture through the abdominal wall, smaller diameter TSPs required less insertional force (1.50 ± 0.17 N vs 9.68 ± 1.50 N [ P = 0.00072]). Through composite mesh, the solid tipped TSPs required less force than hollow tipped ones (3.87 ± 0.25 N vs 7.88 ± 0.20 N [ P = 0.00026]). Overall, smaller diameter TSPs required less force than the larger TSPs when passed through ePTFE empty (Gore 2.95 ± 0.83 N vs Carter-Thomason 16.07 ± 2.10 N [ P = .0005]) or with suture (Gore 8.37 ± 2.59 N vs Carter-Thomason 19.12 ± 1.10 N [ P = .003]). Conclusions. Diameter plays the greatest role in the force required for TSP penetration. However, when passed through underlay mesh or while holding suture, distal tip shape, the mechanism of suture holding, and shaft diameter all contribute to the forces necessary for penetration. These factors should be considered when choosing a TSP for intraoperative use.

scholarly journals PolyJet 3D Printing of Tissue Mimicking Materials: An Investigation of Characteristic Properties of 3D Printed Synthetic Tissue

2020 ◽  
Author(s):  
Vania Lee ◽  
Leah Severseike ◽  
Chris Bakken ◽  
Emily Bermel ◽  
Varun Bhatia
Keyword(s):  
3D Printing ◽  
Mechanical Behavior ◽  
Biological Tissue ◽  
Subcutaneous Tissue ◽  
Solid Organ ◽  
Educational Training ◽  
Porcine Liver ◽  
Surgical Tool ◽  
3D Printed ◽  
Printed Materials

AbstractCurrent anatomical 3D printing has been primarily used for education, training, and surgical planning purposes. This is largely due to the models being printed in materials which excel at replicating macro-level organic geometries; however, these materials have the drawback of unrealistic mechanical behavior and system properties compared to biological tissue. The new Digital Anatomy (DA) family of materials from Stratasys utilizes composite printed materials to more closely mimic mechanical behavior of biological tissue, potentially allowing more realistic models for design evaluation. Various experimental DA Solid Organ (SO) configurations were quantitatively evaluated under axial loading for comparison with porcine liver in terms of stiffness. Additionally, Structural Heart - Myocardium (Myo) configurations were quantitatively evaluated under different lubricant conditions for comparison with porcine epicardium and aorta in terms of lubricity. Finally, experimental DA Subcutaneous Tissue configurations were qualitatively evaluated by experts with significant pre-clinical implant experience for cutting, tunneling, and puncture procedures.In general, the experimental SO configurations showed promising compliance results when compared to porcine liver. The stiffness of DA configurations was either within the same range or on the lower bound of porcine tissue stiffness values. The lubricity of DA configurations with surface treatments was comparable with porcine epicardium and aorta. In terms of qualitative cutting, DA did not perform well for any of the configurations; however, tunneling and puncture were rated favorably for some of the experimental configurations. Despite some limitations, DA feels closer to real tissue than other commercially available 3D printed materials. Furthermore, the lower sample-to-sample variability of DA allows for repeatability not provided by biological tissue. The promising results and repeatability indicate that DA materials can be used to configure structures with similar characteristic mechanical properties to porcine liver, epicardium, and subcutaneous tissue, adding new value as not only an educational, training, and surgical tool, but also as a research tool.

Novel experimental surgical strategy to prevent traumatic neuroma formation by combining a 3D-printed Y-tube with an autograft

2018 ◽  
Vol 130 (1) ◽  
pp. 184-196 ◽  
Author(s):  
Anne Bolleboom ◽  
Godard C. W. de Ruiter ◽  
J. Henk Coert ◽  
Bastiaan Tuk ◽  
Jan C. Holstege ◽  
...  
Keyword(s):  
Sciatic Nerve ◽  
Surgical Strategy ◽  
Tube Model ◽  
Nerve Stump ◽  
Myelinated Axons ◽  
Thin Sections ◽  
Traumatic Neuroma ◽  
Surgical Tool ◽  
3D Printed ◽  
Neuroma Formation

OBJECTIVETraumatic neuromas may develop after nerve injury at the proximal nerve stump, which can lead to neuropathic pain. These neuromas are often resistant to therapy, and excision of the neuroma frequently leads to recurrence. In this study, the authors present a novel surgical strategy to prevent neuroma formation based on the principle of centro-central anastomosis (CCA), but rather than directly connecting the nerve ends to an autograft, they created a loop using a 3D-printed polyethylene Y-shaped conduit with an autograft in the distal outlets.METHODSThe 3D-printed Y-tube with autograft was investigated in a model of rat sciatic nerve transection in which the Y-tube was placed on the proximal sciatic nerve stump and a peroneal graft was placed between the distal outlets of the Y-tube to form a closed loop. This model was compared with a CCA model, in which a loop was created between the proximal tibial and peroneal nerves with a peroneal autograft. Additional control groups consisted of the closed Y-tube and the extended-arm Y-tube. Results were analyzed at 12 weeks of survival using nerve morphometry for the occurrence of neuroma formation and axonal regeneration in plastic semi-thin sections.RESULTSAmong the different surgical groups, the Y-tube with interposed autograft was the only model that did not result in neuroma formation at 12 weeks of survival. In addition, a 13% reduction in the number of myelinated axons regenerating through the interposed autograft was observed in the Y-tube with autograft model. In the CCA model, the authors also observed a decrease of 17% in the number of myelinated axons, but neuroma formation was present in this model. The closed Y-tube resulted in minimal nerve regeneration inside the tube together with extensive neuroma formation before the entrance of the tube. The extended-arm Y-tube model clearly showed that the majority of the regenerating axons merged into the Y-tube arm, which was connected to the autograft, leaving the extended plastic arm almost empty.CONCLUSIONSThis pilot study shows that our novel 3D-printed Y-tube model with interposed autograft prevents neuroma formation, making this a promising surgical tool for the management of traumatic neuromas.

3D Printed Models for Surgical Planning and Reconstructive Implant Design in Sphenoorbital Tumor Surgery

2016 ◽  
Vol 77 (S 02) ◽  
Author(s):  
Hassan Othman ◽  
Sam Evans ◽  
Daniel Morris ◽  
Saty Bhatia ◽  
Caroline Hayhurst
Keyword(s):  
Surgical Planning ◽  
Implant Design ◽  
Tumor Surgery ◽  
3D Printed

That which Is Unseen: A 3D-Printed Case-Based Didactic Approach to Teaching Pediatric Cerebrovascular Neurosurgery

2019 ◽  
Author(s):  
Avital Perry ◽  
Soliman Oushy ◽  
Lucas Carlstrom ◽  
Christopher Graffeo ◽  
David Daniels ◽  
...  
Keyword(s):  
3D Printed ◽  
Approach To Teaching ◽  
Case Based
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