A CAD-based Procedure for Designing 3D Printable Arm-Wrist-Hand Cast

Abstract

Structural optimization is a promising form-finding technique for the architectural schematic design phase of buildings. However, most published case studies tend to reduce practical design and analysis problems into simplified theoretical models in which materiality, geometry and loading conditions are over-simplified. This paper presents a structural optimization case study that allows the inclusion of complexity using Grasshopper and Matlab. The optimization process includes an automated update of structural size, shape and topology, material properties, and loading conditions. The method is applied to a parametric skyscraper design problem to demonstrate the use of Grasshopper to expedite the implementation of a complex problem and thereby facilitate the architectural schematic design phase.

An industrial oriented workflow for 3D printed, patient specific orthopedic cast

“…Patient satisfaction using plaster cast is poor [1] due to the physical characteristics of this old medical device. To overcome this drawback, the use of computeraided design (CAD) and 3D printing technology to produce personalized plastic casts, have been largely proposed [1][2][3][4][5] increasing the public awareness in the clinical use of these low cost and widely available technologies.…”

Sensor Architectures and Technologies for Upper Limb 3D Surface Reconstruction: A Review

“…Therefore, the effectiveness of the final product depends on the specialist’s skills and experience. Recently, this standard procedure has been progressively supported and partially replaced by computer-aided design (CAD) and computer-aided engineering (CAE) tools, which allow the design of medical devices based on 3D virtual models that reproduce the actual patient’s anatomy [ 10 ]. A great step forward, however, has been achieved by the advent of rapid prototyping (RP) technologies as, for example, additive manufacturing (AM), which have allowed the direct production of fully functional parts from a 3D model without traditional machining process and/or manual processes [ 11 , 12 ].…”

Arm and Forearm Scanning Methodology for the Development of an Orthotic Device for Tetraplegic Patients

“…To create such a tool, it is appropriate to use modern technologies ranging from 3D scanners to additive manufacturing [6], [7], [8]. Scanning the body surface using 3D scanners is, from a practical point of view, an adequate method for designing orthotic devices [8], [9], [10], [11], [12]. It is contactless and is faster, more detailed, more convenient for the patient compared to the traditional method of data collection, and in the case of portable hand-held 3D scanners, the patient's presence at a special workplace is not required [8] [13].…”

“…[9], [14], [15]. From the positive obtained by 3D scanning, a model of an orthotic device is created in the interface of suitable CAD software [12] [16]. There are many purchasable or freely downloadable CAD software on the market for prosthesis and orthosis designing.…”

“…There are many purchasable or freely downloadable CAD software on the market for prosthesis and orthosis designing. Thanks to this software, a precise individual 3D design of an orthotic device is created by the method of reverse engineering, which can be subsequently produced by means of additive manufacturing [12]. Additive manufacturing technology, or 3D printing, is the production of objects by joining selected materials according to a virtual 3D model vertically divided into horizontal layers [16], [17], [18].…”