Study on Properties of Automatically Designed 3D-Printed Customized Prosthetic Sockets

Górski, Filip; Wichniarek, Radosław; Kuczko, Wiesław; Żukowska, Magdalena

doi:10.3390/ma14185240

Cited by 29 publications

(14 citation statements)

References 35 publications

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“…In order to overcome this situation, recent studies have proposed and assessed the manufacturing of personalized upper limb sockets using 3D printing and 3D scanning techniques [19][20][21][22]. These works aim to improve stump morphology measurements to propose 3D-printed socket designs that fit users' anatomies and converge full 3D designs and manufacturing.…”

Section: D-printed Socketsmentioning

confidence: 99%

Identifying Users’ Needs to Design and Manufacture 3D-Printed Upper Limb Sockets: A Survey-Based Study

Roda-Sales,

Llop-Harillo

2024

Applied Sciences

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The development of prosthetic arms has increased in recent years, particularly with the growth of 3D printing technologies. However, one of the main weaknesses of 3D-printed prosthetics is the prosthetic socket, which commonly presents a generic adjustable design that may produce discomfort. In fact, the socket has always been a part that has frequently caused discomfort in traditionally manufactured prosthetics and, consequently, high rejection rates. Studies about improving the socket component in traditional and 3D-printed upper limb prostheses are scarce. Advancements in 3D printing and 3D scanning will offer a high potential to improve the design and manufacturing of 3D-printed sockets. Thus, to propose better designs and manufacturing protocols, this paper presents a questionnaire to assess the needs of upper limb prosthetics users or potential users, as well as a survey-based study with 18 respondents. The results reveal that users prioritize breathability and low cost, a stable fixing system, products without the need for shape adjustments, a light weight and comfort regarding the products they require. The results of this study provide insights into the key characteristics that sockets should accomplish according to users’ needs that are applicable to 3D-printed sockets and traditionally manufactured sockets, and they contribute to improving their design and manufacturing.

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Section: D-printed Socketsmentioning

confidence: 99%

Identifying Users’ Needs to Design and Manufacture 3D-Printed Upper Limb Sockets: A Survey-Based Study

Roda-Sales,

Llop-Harillo

2024

Applied Sciences

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“…The system and more technical studies related to different phases of its use have been described in numerous previous publications [23,24]. Its initial prototype (hardware layer shown in Fig.…”

Section: Automedprint System and Research Contextmentioning

confidence: 99%

“…This type of prosthesis has been successfully made before for several child patients (Fig. 2a) using the AutoMedPrint system, partially described in earlier studies [24]. However, translating this prosthesis to fulfill the needs and requirements of adult patients (more formally stated, among other sources, in [27]) is a more challenging process.…”

Section: Case and Problem Analysismentioning

confidence: 99%

Risk Assessment of Individualized 3D Printed Prostheses Using Failure Mode and Effect Analysis

Górski¹,

Sahaj²,

Kuczko³

et al. 2022

Adv. Sci. Technol. Res. J.

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Risk analysis of personalized medical devices, such as prostheses, is challenging due to the complexity of technological and geometrical issues. The paper undertakes a process of risk analysis for upper limb prostheses for adult patients, individualized by 3D scanning and produced by additive manufacturing. The analysis was performed to systematize the process and its steps and diagnose specific problems to achieve future devices with correct fit and function, produced in as few iterations as possible. The Failure Mode and Effect Analysis of Process (PFMEA) method was used. The results identified main process risks: the problems are primarily caused in stages, where the operator's decision or activity is to be performed, regarding socket length, offset, and suitable lining. The primary prevention activities were determined -human involvement in the decision process should be minimal, and the intelligent models should be adjustable to as many patient cases as possible. Consequently, future steps for process optimization were determined -a more extensive base of patient cases is necessary to acquire and study, to gather data for model and process improvement.

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“…To produce a patient-specific socket, the geometry of the residuum was obtained via 3D scanning. Then limb geometry was modified using a haptic device or an automated software algorithm, subsequently printing the socket using SLS and FDM process [ 18 , 19 ]. Recent studies demonstrated the promise of producing 3D-printed sockets to meet static strength and cyclic-loading criteria of the ISO standard 10328.…”

Section: Introductionmentioning

confidence: 99%

Strength Assessment of PET Composite Prosthetic Sockets

Nagarajan,

Farukh,

Silberschmidt

et al. 2023

Materials

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A prosthesis is loaded by forces and torques exerted by its wearer, the amputee, and should withstand instances of peak loads without failure. Traditionally, strong prosthetic sockets were made using a composite with a variety of reinforcing fibres, such as glass, carbon, and Kevlar. Amputees in less-resourced nations can lack access to composite prosthetic sockets due to their unavailability or prohibitive cost. Therefore, this study investigates the feasibility of polyethylene terephthalate (PET) fibre-reinforced composites as a low-cost sustainable composite for producing functional lower-limb prosthetic sockets. Two types of these composites were manufactured using woven and knitted fabric with a vacuum-assisted resin transfer moulding (VARTM) process. For direct comparison purposes, traditional prosthetic-socket materials were also manufactured from laminated composite (glass-fibre-reinforced (GFRP)), monolithic thermoplastic (polypropylene (PP) and high-density polyethylene (HDPE)) were also manufactured. Dog-bone-shaped specimens were cut from flat laminates and monolithic thermoplastic to evaluate their mechanical properties following ASTM standards. The mechanical properties of PET-woven and PET-knitted composites were found to have demonstrated to be considerably superior to those of traditional socket materials, such as PP and HDPE. All the materials were also tested in the socket form using a bespoke test rig reproducing forefoot loading according to the ISO standard 10328. The static structural test of sockets revealed that all met the target load-bearing capacity of 125 kg. Like GFRP, the PETW and PETK sockets demonstrated higher deformation and stiffness resistance than their monolithic counterparts made from PP and HDPE. As a result, it was concluded that the PET-based composite could replace monolithic socket materials in producing durable and affordable prostheses.

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Study on Properties of Automatically Designed 3D-Printed Customized Prosthetic Sockets

Cited by 29 publications

References 35 publications

Identifying Users’ Needs to Design and Manufacture 3D-Printed Upper Limb Sockets: A Survey-Based Study

Identifying Users’ Needs to Design and Manufacture 3D-Printed Upper Limb Sockets: A Survey-Based Study

Risk Assessment of Individualized 3D Printed Prostheses Using Failure Mode and Effect Analysis

Strength Assessment of PET Composite Prosthetic Sockets

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