A new design paradigm for the development of custom-fit soft sockets for lower limb prostheses

Colombo, Giorgio; Filippi, Stefano; Rizzi, Caterina; Rotini, Federico

doi:10.1016/j.compind.2010.03.008

Cited by 75 publications

(47 citation statements)

References 13 publications

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“…In such a context, different issues related to the human Fig. 12.28 Reverse Engineering equipment and techniques for morphology acquisition (up, left), digital models of the stumps of four amputees (up, right), the generation of the 3D model of the socket (down, left), the FEM simulation of the socket wearibility (down, right) [35] body are considered: acquisition of the stump morphology, generation of a complete virtual model including both the external shape (skin) and geometry of the internal parts (muscles and bones) and mechanical characterisation of the stump, simulation of the socket-stump interaction, realisation of the physical prototype.…”

Section: Prosthesis Developmentmentioning

confidence: 99%

“…In [35] the authors proposed a new 3D design paradigm for the development of custom-fit soft sockets for lower limb prostheses. The new paradigm is centred on a digital model of the selected part of the human body and it is completely based on a computer-aided modelling and simulation of the two interfacing parts: the stump and the socket (Fig.…”

Section: Prosthesis Developmentmentioning

confidence: 99%

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Reverse Engineering

Šagi

Lulić

Mahalec

2015

Concurrent Engineering in the 21st Century

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One of the most time-consuming aspects of creating 3D virtual models is the generation of geometric models of objects, in particular if the virtual model is derived (digitized) from a physical version of the object. A variety of commercially available technologies can be used to digitize objects at the molecular scale but also multi-storey buildings or even planets and stars. The process of 3D digitizing basically consists of a sensing phase followed by a rebuild phase. The sensing phase collects or captures raw data and generates initial geometry data, usually as a 2D boundary object, or a 3D point cloud. Sensing technologies are based on tracking, imaging, and range finding or their combination. The rebuild phase is internal processing of data into conventional 3D CAD and animation geometry data, such as NURBS and polygon sets. Finally, in most cases, the digitized objects must be refined by using the CAD software to gain CAD models of optimal quality which are needed in the downstream processes. Leading CAD software packages include special modules for such tasks. Many commercial vendors offer sensors, software and/or complete integrated systems. Reverse engineering focuses not only on the reconstruction of the shape and fit, but also on the reconstruction of physical properties of materials and manufacturing processes. Reverse engineering methods are

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Section: Prosthesis Developmentmentioning

confidence: 99%

Section: Prosthesis Developmentmentioning

confidence: 99%

Reverse Engineering

Šagi

Lulić

Mahalec

2015

Concurrent Engineering in the 21st Century

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show abstract

“…Various research projects [1,2] highlighted how customfit products, such as helmets, motorcycle saddles or handicapped equipments, can strongly improve their quality thanks to innovative computer-aided tools. Anyway, the results obtained revealed some limits: both products and development processes strongly depend on skill and technical knowledge of involved technical staff.…”

Section: Introductionmentioning

confidence: 99%

3D modelling and knowledge: tools to automate prosthesis development process

Buzzi

Colombo²,

Facoetti

et al. 2012

Int J Interact Des Manuf

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Computer-aided tools can help to realize customfit products characterized by a strict interaction with human body and definitely improve quality of life, in particular of people with disabilities. The paper refers to this context and to a specific custom-fit product, the lower limb prosthesis. It presents an innovative framework centred on virtual models of the patient's body, to design and configure lower limb prosthesis, both transfemoral and transtibial. The framework integrates virtual prototyping and knowledge-based tools to support the orthopaedic technician during all the steps of the lower limb prosthesis design, suggesting rules and procedures for each task. First, the considered product is introduced, and then, the new design framework is described as well as main steps and related tools, from socket modelling to standards component selection and final prosthesis assembly. Results of preliminary experimentation and final remarks conclude the paper.

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“…In literature and on the market, we can find prosthetic systems [1][2][3][4][5] or design process that integrates CAD and FEA tools [6][7]; however, they do not provide any support or guidance to the designer. The basic idea of our approach has been to provide an environment where the orthopedic technician can create directly 3D socket model onto the stump digital model, and apply design rules and modifications in automatic and/or assisted way, coherently with the traditional procedures.…”

Section: Introductionmentioning

confidence: 99%

Physically Based Modelling and Simulation to Innovate Socket Design

Colombo¹,

Facoetti

Morotti

et al. 2011

Computer-Aided Design and Applications

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This paper introduces a virtual laboratory to design prosthetic socket, which integrates a 3D CAD module, named Socket Modelling Assistant (SMA), specifically developed to create the socket digital model, and a CAE system to analyze the stumpsocket interaction. Software tool, named Virtual Socket Lab (VSL), is part of a knowledge-based framework to design lower limb prosthesis centered on digital models of the patient or of his/her anatomical districts. The focus of this paper is on the definition of an automatic simulation procedure to study the stump-socket interaction and validate socket design. We first introduce the new design framework and main features of VSL. Then, we present a state of art on FE models adopted for residual lower-limb and prosthetic socket during last two decades highlighting key issues. Finally, the identified procedure and the integration strategy within SMA are described as well as preliminary results of the experimentation.

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A new design paradigm for the development of custom-fit soft sockets for lower limb prostheses

Cited by 75 publications

References 13 publications

Reverse Engineering

Reverse Engineering

3D modelling and knowledge: tools to automate prosthesis development process

Physically Based Modelling and Simulation to Innovate Socket Design

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