scholarly journals The key role of 3D printing and the new medical sterilizable threads in the development of the translaryngeal Tracheostomy Needle Introducer

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Alessandro Terrani ◽  
Enrico Bassi ◽  
Alberto Ornaghi ◽  
Giacomo Bellani ◽  
Giuseppe Foti
Keyword(s):  
3D Printing ◽  
Computer Aided Design ◽  
Prolonged Mechanical Ventilation ◽  
Percutaneous Tracheostomy ◽  
Three Dimensional ◽  
Needle Insertion ◽  
Technical Note ◽  
New Device ◽  
Skin Contact ◽  
Translaryngeal Tracheostomy

Abstract Background Percutaneous tracheostomy is frequently performed in intensive care units in patients who require prolonged mechanical ventilation. The first crucial step for the physician in these procedures is the precise needle insertion into the trachea. The primary aim of this technical note was to test the new filament and share our experiences in the implementation of the new device. The secondary aim was to show how a physician with basic training in computer-aided design and three-dimensional (3D) printing could independently create useful devices for clinical practice. Methods To simplify this referred clinical procedure and increase its safety, 3D printing and a new medical filament were used to develop a new translaryngeal Tracheostomy Needle Introducer (tTNI) for use in conjunction with the Fantoni’s method of percutaneous tracheostomy. The tTNI is composed of three parts: a support to fit on the rigid endotracheal tube of the Fantoni kit, an external particular shaped arm, and an introducer for the needle. The latest version of the device used a new filament based on a polyester matrix certified for skin contact that was sterilizable in a standard autoclave. Post-printing, minor technical interventions were required to correct small material deformities. Conclusions Our experiences with the thread and the technical features of the material were reported herein in conjunction with some suggestions on how to solve the most frequently encountered problems. The 3D printing technique allows physicians to directly manage the prototyping process of new medical devices, making this process completely independent. The speed of the prototyping process and the testing of each piece allow faster creation of a prototype than with traditional industrial methods. Finally, the new biomedical filaments offer endless possibilities of creation and modelling.

scholarly journals Low cost digital fabrication approach for thumb orthoses

2017 ◽  
Vol 23 (6) ◽  
pp. 1020-1031 ◽  
Author(s):  
Miguel Fernandez-Vicente ◽  
Ana Escario Chust ◽  
Andres Conejero
Keyword(s):  
3D Printing ◽  
Computer Aided Design ◽  
Low Cost ◽  
Three Dimensional ◽  
Recovery Process ◽  
Digital Fabrication ◽  
Cost Comparison ◽  
Content Type ◽  
Custom Made ◽  
The Impact

Purpose The purpose of this paper is to describe a novel design workflow for the digital fabrication of custom-made orthoses (CMIO). It is intended to provide an easier process for clinical practitioners and orthotic technicians alike. It further functions to reduce the dependency of the operators’ abilities and skills. Design/methodology/approach The technical assessment covers low-cost three-dimensional (3D) scanning, free computer-aided design (CAD) software, and desktop 3D printing and acetone vapour finishing. To analyse its viability, a cost comparison was carried out between the proposed workflow and the traditional CMIO manufacture method. Findings The results show that the proposed workflow is a technically feasible and cost-effective solution to improve upon the traditional process of design and manufacture of custom-made static trapeziometacarpal (TMC) orthoses. Further studies are needed for ensuring a clinically feasible approach and for estimating the efficacy of the method for the recovery process in patients. Social implications The feasibility of the process increases the impact of the study, as the great accessibility to this type of 3D printers makes the digital fabrication method easier to be adopted by operators. Originality/value Although some research has been conducted on digital fabrication of CMIO, few studies have investigated the use of desktop 3D printing in any systematic way. This study provides a first step in the exploration of a new design workflow using low-cost digital fabrication tools combined with non-manual finishing.

scholarly journals Processing and Properties of Construction Materials for 3D Printing

2016 ◽  
Vol 861 ◽  
pp. 177-181 ◽  
Author(s):  
Yi Wei Tay ◽  
Biranchi Panda ◽  
Suvash Chandra Paul ◽  
Ming Jen Tan ◽  
Shun Zhi Qian ◽  
...  
Keyword(s):  
3D Printing ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Construction Materials ◽  
Health And Safety ◽  
Successful Implementation ◽  
Construction Time ◽  
Critical Issues ◽  
High Production Cost ◽  
Aided Design

3D printing (3DP), commonly known as additive manufacturing (AM), is a promising technology that can fabricate three dimensional complex shape prototypes directly from computer-aided design (CAD) model without any tooling and human intervention. Owing to its peculiar characteristics, AM is widely used in many industries to assist in the design, manufacture and commercialization of a product. More recently, this technology has been extended to building and construction (B&C) application in order to mitigate some of the critical issues such as shortage of skilled labour, high production cost and construction time, health and safety concerns of the workers in the hazardous environment etc. However for successful implementation, proper selection of materials and their mix design is highly recommended, which is a challenging task. This paper summarizes the current available 3DP systems from literature and the respective materials that have been used thus far by various experts, industries for B&C purposes. Finally, the benchmarking properties of theses material and potential research directions are briefly discussed.

A Parallel Multiple Layer Cryolithography Device for the Manufacture of Biological Material for Tissue Engineering

2019 ◽  
Vol 13 (3) ◽  
Author(s):  
Gideon Ukpai ◽  
Joseph Sahyoun ◽  
Robert Stuart ◽  
Sky Wang ◽  
Zichen Xiao ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Additive Manufacturing ◽  
3D Printing ◽  
3D Structure ◽  
Three Dimensional ◽  
3D Object ◽  
New Device ◽  
Biological Matter ◽  
Simple Product ◽  
Printing Processes

While three-dimensional (3D) printing of biological matter is of increasing interest, current linear 3D printing processes lack the efficiency at scale required to mass manufacture products made of biological matter. This paper introduces a device for a newly developed parallel additive manufacturing technology for production of 3D objects, which addresses the need for faster, industrial scale additive manufacturing methods. The technology uses multilayer cryolithography (MLCL) to make biological products faster and in larger quantities by simultaneously printing two-dimensional (2D) layers in parallel and assembling the layers into a 3D structure at an assembly site, instead of sequentially and linearly assembling a 3D object from individual elements as in conventional 3D printing. The technique uses freezing to bind the 2D layers together into a 3D object. This paper describes the basic principles of MLCL and demonstrates the technology with a new device used to manufacture a very simple product that could be used for tissue engineering, as an example. An evaluation of the interlayer bonding shows that a continuous and coherent structure can be made from the assembly of distinct layers using MLCL.

3D printing of generative art using the assembly and deformation of direction-specified parts

2016 ◽  
Vol 22 (4) ◽  
pp. 636-644 ◽  
Author(s):  
Yaususi Kanada
Keyword(s):  
3D Printing ◽  
Computer Aided Design ◽  
Fused Deposition Modeling ◽  
Three Dimensional ◽  
3D Models ◽  
Control Technique ◽  
Content Type ◽  
Fused Deposition ◽  
A New Technique ◽  
Printing Direction

Purpose A methodology for designing and printing three-dimensional (3D) objects with specified printing-direction using fused deposition modeling (FDM), which was proposed by a previous paper, enables the expression of natural directions, such as hair, fabric or other directed textures, in modeled objects. This paper aims to enhance this methodology for creating various shapes of generative visual objects with several specialized attributes. Design/methodology/approach The proposed enhancement consists of two new methods and a new technique. The first is a method for “deformation”. It enables deforming simple 3D models to create varieties of shapes much more easily in generative design processes. The second is the spiral/helical printing method. The print direction (filament direction) of each part of a printed object is made consistent by this method, and it also enables seamless printing results and enables low-angle overhang. The third, i.e. the light-reflection control technique, controls the properties of filament while printing with transparent polylactic acid. It enables the printed objects to reflect light brilliantly. Findings The proposed methods and technique were implemented in a Python library and evaluated by printing various shapes, and it is confirmed that they work well, and objects with attractive attributes, such as the brilliance, can be created. Research limitations/implications The methods and technique proposed in this paper are not well-suited to industrial prototyping or manufacturing that require strength or intensity. Practical implications The techniques proposed in this paper are suited for generatively producing various a small number of products with artistic or visual properties. Originality/value This paper proposes a completely different methodology for 3D printing than the conventional computer-aided design (CAD)-based methodology and enables products that cannot be created by conventional methods.

scholarly journals A Review of 3D Printing in Dentistry: Technologies, Affecting Factors, and Applications

Scanning ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-19
Author(s):  
Yueyi Tian ◽  
ChunXu Chen ◽  
Xiaotong Xu ◽  
Jiayin Wang ◽  
Xingyu Hou ◽  
...  
Keyword(s):  
3D Printing ◽  
Computer Aided Design ◽  
Fused Deposition Modeling ◽  
Complex Geometry ◽  
Maxillofacial Surgery ◽  
Three Dimensional ◽  
Oral And Maxillofacial Surgery ◽  
Affecting Factors ◽  
Fused Deposition ◽  
Oral Implantology

Three-dimensional (3D) printing technologies are advanced manufacturing technologies based on computer-aided design digital models to create personalized 3D objects automatically. They have been widely used in the industry, design, engineering, and manufacturing fields for nearly 30 years. Three-dimensional printing has many advantages in process engineering, with applications in dentistry ranging from the field of prosthodontics, oral and maxillofacial surgery, and oral implantology to orthodontics, endodontics, and periodontology. This review provides a practical and scientific overview of 3D printing technologies. First, it introduces current 3D printing technologies, including powder bed fusion, photopolymerization molding, and fused deposition modeling. Additionally, it introduces various factors affecting 3D printing metrics, such as mechanical properties and accuracy. The final section presents a summary of the clinical applications of 3D printing in dentistry, including manufacturing working models and main applications in the fields of prosthodontics, oral and maxillofacial surgery, and oral implantology. The 3D printing technologies have the advantages of high material utilization and the ability to manufacture a single complex geometry; nevertheless, they have the disadvantages of high cost and time-consuming postprocessing. The development of new materials and technologies will be the future trend of 3D printing in dentistry, and there is no denying that 3D printing will have a bright future.

scholarly journals The 3D Printing in Material Research and Medical Physics Education and Its Accuracy Study

2020 ◽  
Vol 6 (2) ◽  
pp. 227-236
Author(s):  
Talitha Asmaria ◽  
Rafida Rahmi ◽  
Muhammad Satrio Utomo ◽  
Franciska Pramuji Lestari ◽  
Aprillia Erryani ◽  
...  
Keyword(s):  
3D Printing ◽  
Ct Scan ◽  
Physics Education ◽  
Computer Aided Design ◽  
3D Model ◽  
Medical Physics ◽  
Three Dimensional ◽  
Material Research ◽  
Accuracy Study ◽  
Processing Techniques

This study aims to construct prototypes using three-dimensional (3D) printing technology as a research apparatus and a physics education instrument, particularly in medical physics education. Two main designs of prototypes have been arranged. Two foam NaCl templates are drawn using computer-aided design (CAD) software. Image processing techniques achieve a 3D model of a thoracic vertebra. All 3D model data are printed using polylactic acid (PLA) filament. The prints of foam NaCl templates are utilized for holding the NaCl powder. The prototype of a human vertebra is used for visualization of the real condition of the human bone anatomy. The results of the prototypes are analyzed to investigate the similarity between the model and the prints. This investigation is done using a Vernier Caliper and CT Scan. The measurement using Caliper shows a higher percentage in likeness than the CT-Scan. All the accuracy study shows they have more than 83% in similarity. It can be concluded that all built prototypes have prominent exactitude and can support the material research using the printed NaCl templates. Hereafter, a bone mock-up’s genuine perception can function for further application, such as implant or surgery planning.

scholarly journals Novel open-source 3D-printed eye mount (TEMPO) for the ophthalmology wet lab

2021 ◽  
Vol 6 (1) ◽  
pp. e000685
Author(s):  
Michael Mak ◽  
Yejun Hong ◽  
William Murray Trask ◽  
Randy Thompson ◽  
Helen Chung ◽  
...  
Keyword(s):  
3D Printing ◽  
Open Source ◽  
Surgical Training ◽  
Computer Aided Design ◽  
Anatomical Variation ◽  
Three Dimensional ◽  
Computer Assisted ◽  
3D Printed ◽  
Wet Lab ◽  
Facial Contours

ObjectiveProcuring an affordable eye mount that can stabilise a cadaveric eye and simulate a patient’s normal facial contours represents an ongoing challenge in the ophthalmology simulation wet lab, with notable limitations to all currently available commercial options. This project uses computer-assisted design and three-dimensional (3D)-printing techniques to tackle these challenges for ophthalmologic surgical training.Methods and AnalysisProof-of-concept study. Using Autodesk Fusion 360, we designed and 3D-printed a modular device that consists of 11 pieces forming a head structure. Standard OR tubing and syringes were adapted to create an adjustable-suction system to affix cadaveric eyes. Further modular inserts were customised to house non-cadaveric simulation eyes.ResultsThree-dimensional eye mount for procedures in ophthalmology (TEMPO) reliably fixed a cadaveric eye in stable position throughout surgical manipulation. Trainees were able to drape and practice appropriate hand positioning while corneal suturing. Overall, this model was affordable, at a cost of approximately $C200 to print. The modular nature renders individual pieces convenient for replacement and customisable to simulate regional anatomical variation and accommodate non-cadaveric eyes.ConclusionsTEMPO represents an affordable, high-fidelity alternative to existing commercially available eye mounts. It reliably fixates cadaveric and simulation eyes and provides an enhanced surgical training experience by way of its realistic facial contours. It is released as an open-source computer-aided design file, customisable to interested trainees with appropriate software and 3D-printing capacity.

scholarly journals Thinking Outside the CAD Box

2012 ◽  
Vol 134 (10) ◽  
pp. 30-35 ◽  
Author(s):  
Hod Lipson
Keyword(s):  
3D Printing ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Natural World ◽  
New Paradigm ◽  
Challenges And Opportunities ◽  
3D Printers ◽  
Multiple Materials ◽  
Manufacturing Technologies ◽  
Aided Design

This article reviews new 3D printing capabilities for computer-aided design (CAD) engineers. As additive manufacturing technologies such as 3D printing and rapid prototyping become increasingly capable, traditional barriers of resources and skill for manufacturing are all but vanishing. Three-dimensional printers are giving designers unprecedented control over the shape and composition of matter. High-end 3D printers today can combine multiple materials into arbitrary patterns at a resolution close to 10 mm, leading to the ability to create geometry with fidelity and complexity that rivals that of the natural world. The growing accessibility of personal manufacturing tools, such as 3D printers, is democratizing design and enabling new types of designers. The combination of new geometric representations, new design paradigms, and new interfaces leads to new challenges and opportunities in the CAD field as never before. Good design tools are often the hidden enabler of technological innovation; however, balancing the existing performance engine with a new paradigm shift is a difficult but not an impossible task.

scholarly journals Additive Manufacturing for Guided Bone Regeneration: A Perspective for Alveolar Ridge Augmentation

2018 ◽  
Vol 19 (11) ◽  
pp. 3308 ◽  
Author(s):  
Patrick Rider ◽  
Željka Kačarević ◽  
Said Alkildani ◽  
Sujith Retnasingh ◽  
Reinhard Schnettler ◽  
...  
Keyword(s):  
3D Printing ◽  
Computer Aided Design ◽  
Selective Laser Sintering ◽  
Three Dimensional ◽  
Tissue Scaffolds ◽  
Patient Specific ◽  
Alveolar Ridge ◽  
Ridge Augmentation ◽  
Permanent Implants ◽  
Extrusion Printing

Three-dimensional (3D) printing has become an important tool in the field of tissue engineering and its further development will lead to completely new clinical possibilities. The ability to create tissue scaffolds with controllable characteristics, such as internal architecture, porosity, and interconnectivity make it highly desirable in comparison to conventional techniques, which lack a defined structure and repeatability between scaffolds. Furthermore, 3D printing allows for the production of scaffolds with patient-specific dimensions using computer-aided design. The availability of commercially available 3D printed permanent implants is on the rise; however, there are yet to be any commercially available biodegradable/bioresorbable devices. This review will compare the main 3D printing techniques of: stereolithography; selective laser sintering; powder bed inkjet printing and extrusion printing; for the fabrication of biodegradable/bioresorbable bone tissue scaffolds; and, discuss their potential for dental applications, specifically augmentation of the alveolar ridge.

scholarly journals 3D Printing Technology in Pharmaceutical Drug Delivery

2021 ◽  
Vol 68 (1) ◽  
Keyword(s):  
Drug Delivery ◽  
3D Printing ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Pharmaceutical Manufacturing ◽  
Three Dimensional Printing ◽  
Pharmaceutical Drug ◽  
Pharmaceutical Technology ◽  
Aided Design ◽  
Dimensional Printing

Three dimensional printing (3DP) enables the development of diverse geometries through computer aided design using different techniques and materials for desired applications such as pharmaceutical drug delivery system. The process of 3D printing was patented in 1986; however, the research in the field of 3DP did not become popular until the last decade. There has been an increasing research into the areas of 3DP for medical applications for fabricating prosthetics, bioprinting and pharmaceutics. It becomes one of the most innovatory and influential tools serving as a technology of precise manufacturing of developed dosage forms, tissue engineering and disease modelling. It is a valuable strategy to overcome some challenges of conventional pharmaceutical process. This technology will reform the pharmaceutical manufacturing style and formulation techniques. The present review focused on various techniques, applications of 3D printing in pharmaceutical technology.

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