Custom, rapid prototype thumb prosthesis for partial-hand amputation: A case report

2017 ◽  
Vol 42 (2) ◽  
pp. 187-190 ◽  
Author(s):  
Ashley Quinn Swartz ◽  
Kristi Turner ◽  
Laura Miller ◽  
Todd Kuiken
Keyword(s):  
Three Dimensional ◽  
Rapid Prototype ◽  
Dominant Hand ◽  
Rapid Prototype Technology ◽  
Three Dimensional Printing ◽  
Custom Made ◽  
Unique Approach ◽  
Hand Amputation ◽  
Acceptance Rates ◽  
Custom Made Prostheses

Background: Due to advancements in three-dimensional printing, custom-made prostheses are becoming more viable options for persons with difficult cases of prosthetic management. The purpose of this article was to develop a custom voluntary-closing, body-powered thumb mechanism for a partial-hand amputee who had amputations of the index finger and thumb on the left, non-dominant hand. Case description and methods: The prosthesis model was manufactured using rapid prototype technology and was developed to provide greater force and functionality, and to decrease overall size compared to traditional hand prostheses. Findings and outcomes: Following device iterations and occupational therapy sessions, the patient achieved higher functionality in performing daily tasks such as cooking and cleaning, and in completing the Box and Blocks test, though some limitations still precluded full acceptance of the device. Conclusion: This case study represents a unique approach in the development of custom-made devices that may increase prostheses acceptance rates among partial-hand amputees. Clinical relevance Many partial-hand amputees report experiencing trouble in finding a device that fits their needs. This study highlights the potential of using rapid prototyping technology to design a prosthesis that meets a user’s specific desires.

scholarly journals Transfiguring Healthcare: Three-Dimensional Printing in Pharmaceutical Sciences; Trends during COVID-19: A Review

2021 ◽  
pp. 207-218
Author(s):  
K. G. Siree ◽  
T. M. Amulya ◽  
T. M. Pramod Kumar ◽  
S. Sowmya ◽  
K. Divith ◽  
...  
Keyword(s):  
3D Printing ◽  
Medical Devices ◽  
Three Dimensional ◽  
Pharmaceutical Sciences ◽  
Three Dimensional Printing ◽  
Custom Made ◽  
High Degree ◽  
The Impact ◽  
Dimensional Printing ◽  
Shed Light

Three-dimensional (3D) printing is a unique technique that allows for a high degree of customisation in pharmacy, dentistry and in designing of medical devices. 3D printing satiates the increasing exigency for consumer personalisation in these fields as custom-made medicines catering to the patients’ requirements are novel advancements in drug therapy. Current research in 3D printing indicates towards reproducing an organ in the form of a chip; paving the way for more studies and opportunities to perfecting the existing technique. In addition, we will also attempt to shed light on the impact of 3D printing in the COVID-19 pandemic.

scholarly journals Three-Dimensional Printing: Custom-Made Implants for Craniomaxillofacial Reconstructive Surgery

2017 ◽  
Vol 10 (2) ◽  
pp. 089-098 ◽  
Author(s):  
Mariana Matias ◽  
Horácio Zenha ◽  
Horácio Costa
Keyword(s):  
3D Printing ◽  
Reconstructive Surgery ◽  
Three Dimensional ◽  
Tactile Feedback ◽  
Current Status ◽  
Printing Technology ◽  
Three Dimensional Printing ◽  
3D Printing Technology ◽  
Custom Made ◽  
The Aesthetic

Craniomaxillofacial reconstructive surgery is a challenging field. First it aims to restore primary functions and second to preserve craniofacial anatomical features like symmetry and harmony. Three-dimensional (3D) printed biomodels have been widely adopted in medical fields by providing tactile feedback and a superior appreciation of visuospatial relationship between anatomical structures. Craniomaxillofacial reconstructive surgery was one of the first areas to implement 3D printing technology in their practice. Biomodeling has been used in craniofacial reconstruction of traumatic injuries, congenital disorders, tumor removal, iatrogenic injuries (e.g., decompressive craniectomies), orthognathic surgery, and implantology. 3D printing has proven to improve and enable an optimization of preoperative planning, develop intraoperative guidance tools, reduce operative time, and significantly improve the biofunctional and the aesthetic outcome. This technology has also shown great potential in enriching the teaching of medical students and surgical residents. The aim of this review is to present the current status of 3D printing technology and its practical and innovative applications, specifically in craniomaxillofacial reconstructive surgery, illustrated with two clinical cases where the 3D printing technology was successfully used.

scholarly journals Development of a computer-aided engineering–supported process for the manufacturing of customized orthopaedic devices by three-dimensional printing onto textile surfaces

2020 ◽  
Vol 15 ◽  
pp. 155892502091762
Author(s):  
Dustin Ahrendt ◽  
Arturo Romero Karam
Keyword(s):  
Three Dimensional ◽  
Computer Aided Engineering ◽  
Two Dimensional ◽  
Three Dimensional Printing ◽  
Textile Materials ◽  
Fused Deposition ◽  
Custom Made ◽  
Computer Aided ◽  
Dimensional Printing ◽  
Textile Fabric

Today, additive manufacturing, also called three-dimensional printing, is used for producing prototypes as well as other products for various industrial sectors. Although this technology is already well established in the automotive, aviation and space travel, building, dental and medical sectors, its integration in the textile and ready-made industry is still in progress. At present, there is a lack of specific application scenarios for the combination of three-dimensional printing and textile materials, apart from fashion and shoe design. Hence, this article presents a digital computer-aided engineering–supported process to manufacture customized orthopaedic devices by three-dimensional printing directly onto a textile fabric. State-of-the-art fabrication methods for orthoses are typically labour intensive. The combination of three-dimensional scanning, computer-aided design modelling and three-dimensional printing onto textile materials open up new possibilities for producing custom-made products. After three-dimensional scanning of a patient’s individual body shape, the surface is prepared for constructing the textile pattern cuts by reverse engineering. The transformation of the designed three-dimensional patterns into two-dimensional is software supported. Additional positioning lines in accordance with specific body measurements are transferred onto the two-dimensional pattern cuts, which are then used as the basis for the design of the three-dimensional printed functional elements. Subsequently, the design is saved in STL (Standard Triangulation/Tessellation Language) file format, prepared by slicing and directly printed onto textile pattern cuts by means of fused deposition modelling. The last manufacturing step involves the assembly of the textile fabric. The proposed process is demonstrated by an example application scenario, thus proving its potential for industrial use in the textile and ready-made industry.

scholarly journals Tissue engineering and surgery: from translational studies to human trials

2017 ◽  
Vol 2 (4) ◽  
pp. 189-202 ◽  
Author(s):  
Jan Jeroen Vranckx ◽  
Margot Den Hondt
Keyword(s):  
Tissue Engineering ◽  
Wound Repair ◽  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Engineering Sciences ◽  
Custom Made ◽  
Intrinsic Complexity ◽  
Dimensional Printing ◽  
Extensive Burn

AbstractTissue engineering was introduced as an innovative and promising field in the mid-1980s. The capacity of cells to migrate and proliferate in growth-inducing medium induced great expectancies on generating custom-shaped bioconstructs for tissue regeneration. Tissue engineering represents a unique multidisciplinary translational forum where the principles of biomaterial engineering, the molecular biology of cells and genes, and the clinical sciences of reconstruction would interact intensively through the combined efforts of scientists, engineers, and clinicians. The anticipated possibilities of cell engineering, matrix development, and growth factor therapies are extensive and would largely expand our clinical reconstructive armamentarium. Application of proangiogenic proteins may stimulate wound repair, restore avascular wound beds, or reverse hypoxia in flaps. Autologous cells procured from biopsies may generate an ‘autologous’ dermal and epidermal laminated cover on extensive burn wounds. Three-dimensional printing may generate ‘custom-made’ preshaped scaffolds – shaped as a nose, an ear, or a mandible – in which these cells can be seeded. The paucity of optimal donor tissues may be solved with off-the-shelf tissues using tissue engineering strategies. However, despite the expectations, the speed of translation of in vitro tissue engineering sciences into clinical reality is very slow due to the intrinsic complexity of human tissues. This review focuses on the transition from translational protocols towards current clinical applications of tissue engineering strategies in surgery.

Analysis of principles inspiring design of three-dimensional-printed custom-made prostheses in two referral centres

2020 ◽  
Vol 44 (5) ◽  
pp. 829-837 ◽  
Author(s):  
Andrea Angelini ◽  
Daniel Kotrych ◽  
Giulia Trovarelli ◽  
Andrzej Szafrański ◽  
Andrzej Bohatyrewicz ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Custom Made ◽  
Custom Made Prostheses

FEM Analysis of Sheet Incremental Forming Process

2014 ◽  
Vol 571-572 ◽  
pp. 1079-1082
Author(s):  
Jie Liu
Keyword(s):  
Sheet Metal ◽  
Incremental Forming ◽  
Metal Layer ◽  
Three Dimensional ◽  
Rapid Prototype ◽  
Fem Analysis ◽  
Layer By Layer ◽  
Forming Process ◽  
Rapid Prototype Technology ◽  
Forming Technology

Sheet incremental forming is a new sheet metal dieless forming technology. This paper introduced the fundamentals of the sheet incremental forming process. Based on the principle of “layered manufacture” in rapid prototype technology, this process resolves the intricate three-dimensional geometry information of the workpiece into a series of two-dimensional data, which can be used by an NC system to control a forming tool to make a curvilinear movement over the raw sheet metal layer by layer until the component wanted is formed. This paper introduced the sheet incremental forming system and metal digital forming technology. An FEM model of the incremental forming process is established, and a typical process is analyzed to instruct the parameters selection and the optimization of the forming tracks.

scholarly journals Experience with the Use of Prebent Plates for the Reconstruction of Mandibular Defects

2010 ◽  
Vol 3 (4) ◽  
pp. 201-208 ◽  
Author(s):  
Martin I. Salgueiro ◽  
Mark R. Stevens
Keyword(s):  
Three Dimensional ◽  
Rapid Prototype ◽  
Mandibular Reconstruction ◽  
Trial And Error ◽  
Rapid Prototype Technology ◽  
Surgical Tool ◽  
Custom Hardware ◽  
Dimensional Models ◽  
Three Dimensional Models ◽  
Room Time

Bending of large titanium plates for mandibular reconstruction is a tedious task. This is usually done by trial and error over an intraoperatively bent template. By means of rapid prototype technology, accurate three-dimensional models can be obtained. Using these models, it is possible to design, obtain, and adapt custom hardware for individual surgical cases. Reductions of operating room time when using this technology have been reported from 17% to 60%, with an average of 20%. This translates to reduction of cost and risks, improving the overall surgical outcome. The purpose of this article is to establish the indications and contraindication for the use three-dimensional models and prebent plates. We present our experience with five cases in which prebent reconstruction plates were used for mandibular reconstruction. No significant complications occurred, and satisfactory results were achieved in all cases. We found that the models required to obtain the hardware are extremely accurate, have multiple reported applications, and represent a valuable surgical tool in the planning and execution of reconstructive surgery.

A New Incremental Sheet Forming Process Based on Layer Manufacture

2014 ◽  
Vol 607 ◽  
pp. 124-127
Author(s):  
Jie Liu
Keyword(s):  
Sheet Metal ◽  
Metal Layer ◽  
Three Dimensional ◽  
Rapid Prototype ◽  
Layer By Layer ◽  
Forming Process ◽  
Rapid Prototype Technology ◽  
Nc System ◽  
Forming Technology ◽  
Dieless Forming

Sheet dieless digital forming is a new sheet metal dieless forming technology. This paper introduced the fundamentals of the Sheet dieless digital forming process. Based on the principle of “layered manufacture” in rapid prototype technology, this process resolves the intricate three-dimensional geometry information of the workpiece into a series of two-dimensional data, which can be used by an NC system to control a forming tool to make a curvilinear movement over the raw sheet metal layer by layer until the component wanted is formed. This paper introduced the Sheet dieless digital forming system and metal digital forming technology.

scholarly journals A 3D-CT Analysis of Femoral Symmetry—Surgical Implications

2020 ◽  
Vol 9 (11) ◽  
pp. 3546 ◽  
Author(s):  
Joan Ferràs-Tarragó ◽  
Vicente Sanchis-Alfonso ◽  
Cristina Ramírez-Fuentes ◽  
Alejandro Roselló-Añón ◽  
Francisco Baixauli-García
Keyword(s):  
Surgical Planning ◽  
Three Dimensional ◽  
Mirror Image ◽  
Element Analysis ◽  
Custom Made ◽  
Specific Parameter ◽  
Ct Analysis ◽  
Healthy Side ◽  
The Mean ◽  
Custom Made Prostheses

Background: Mirroring the image of the affected side is a widely used technique for surgical planning in orthopedic surgery, especially for fractures and custom-made prostheses. Our objective is to evaluate the three-dimensional symmetry of the femurs using finite element analysis and manual alignment. Methods: Using the computed tomography of 15 patients without lower limb pathology, 30 3D biomodels of their femurs were obtained. The error obtained through image manipulation was calculated and broken down into a rendering error and a manual overlay error. The Hausdorff–Besicovitch method was applied to obtain the total asymmetry. The manipulation error was theb subtracted from it to obtain the intrapersonal asymmetry. Results: The mean intrapersonal asymmetry was 0.93 mm. It was obtained by subtracting the error derived from rendering and alignment of 0.59 mm (SD 0.17 mm) from the overall mean error of 1.52 mm (SD 1.45). Conclusions: Intrapersonal femoral asymmetry is low enough to use the mirror image of the healthy side as a reference for three-dimensional surgical planning. This type of planning is especially useful in deformity surgery when the objective of the surgery is not to restore only one specific parameter but to obtain a general functional morphology when a healthy contralateral femur is available.

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