An explorative study of polymers for 3D printing of bioanalytical test systems

Jurischka, Christoph; Dinter, Franziska; Efimova, Anastasia; Weiss, Romano; Schiebel, Juliane; Schulz, Christian; Fayziev, Bekzodjon; Schierack, Peter; Fischer, Thomas; Rödiger, Stefan

doi:10.3233/ch-190713

Cited by 14 publications

(8 citation statements)

References 64 publications

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“…7 Many FDM filaments retain ambient moisture, which could pose a paradoxically increased risk for virus transmission during use or reuse. 8 In addition, the combination with filter media such as high efficiency particulate air (HEPA) filtration systems has not currently been endorsed as a means of increasing the safety profile of 3D-printed PPE prototypes.…”

Section: Reproducibility and Considerations In 3d Printing Ppe Prototmentioning

confidence: 99%

Considerations and Cautions for Three-Dimensional-Printed Personal Protective Equipment in the COVID-19 Crisis

Clifton

Damon

Martin

2020

3D Printing and Additive Manufacturing

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The recent decline in available personal protective equipment (PPE) due to the novel coronavirus (COVID-19) pandemic has given rise to a host of three-dimensional (3D) printed prototypes for facemask and respirator units. Many of these models have been made open access and publicly available for printing and use, and have been promoted by various media outlets. Although these desktop 3D printing measures have provided a possible venue for success in providing homemade and cost-effective PPE to health care workers, the rapid dissemination of these prototypes has been performed without reproducible methods of standardization and vetted safety in use. Although these methods have not been sanctioned by authoritative organizations as viable production approaches to address the PPE shortage, a concerted effort within the 3D printing community to adhere to scientific methodology and organized research efforts has the potential to provide a solution to this critical issue.

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Section: Reproducibility and Considerations In 3d Printing Ppe Prototmentioning

confidence: 99%

Considerations and Cautions for Three-Dimensional-Printed Personal Protective Equipment in the COVID-19 Crisis

Clifton

Damon

Martin

2020

3D Printing and Additive Manufacturing

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“…This is crucial when considering critical PPE products such as filtration masks, which may need expert design consideration and medical/health service authority approvals, may do more harm than good. The additional risk from unregulated PPE also exists as many FDM filaments retain ambient moisture, which could pose a paradoxically increased risk for virus transmission during use or reuse[ 29 ]. Similar risks and concerns were also reviewed and reported by Clifton et al .…”

Section: Resultsmentioning

confidence: 99%

Design and Additive Manufacturing of Medical Face Shield for Healthcare Workers Battling Coronavirus (COVID-19)

Çelik¹,

Köse²,

Ulmeanu³

et al. 2024

IJB

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During the COVID-19 pandemic, the demand for specific medical equipment such as personal protective equipment (PPE), has rapidly exceeded the available supply around the world. Most especially medical gloves, aprons, goggles, surgery masks and medical face shields have become the most demanded simple medical equipment for healthcare services in this rapidly developing pandemic. Resulting from this difficult period, social solidarity in the world has also rapidly increased as much as the pandemic. Education and governmental institutions, commercial and non‑commercial organisations and individual home makers have produced specific medical equipment by means of additive manufacturing (AM) technology as the fastest way to create a product, providing their support for urgent demands within the healthcare services. Medical face shields have become a popular item to produce and many individual design variations and prototypes have been forthcoming. Although a good number of non‑commercial equipment has been produced utilising AM technology and donated to the healthcare services, the biggest disadvantages of this rapid manufacturing approach appears to be the longer production time compared to conventional serial/mass production and the high demand. However, most of the individual designer/maker-based face shields are designed with little appreciation of clinical needs, are non‑ergonomic and exhibit a lack of professional product design and design for additive manufacturing (DfAM) principles. Consequently, production time of up to 4-5 hours for some products are experienced with these designs. Therefore, a lighter, more ergonomic, single frame medical face shield without extra components to assemble would be useful, most especially for individual designers/makers and non‑commercial producers in order to provide increased productivity in a shorter timeframe. In this study, a medical face shield which is competitively lighter, relatively more ergonomic, easy to use and can be assembled without extra components (such as elastic bands, softening materials and clips) and which has a relatively shorter AM based production time, was designed. Subsequently, finite element analysis based structural design verification was realised and a 3D prototype was produced through an OEM 3D printer (Fused Deposition Modelling). As the result of this study, an original face shield design, which can be produced in under 45 minutes fabrication time with less than 10 g material usage per single frame, was approved. This research provides a useful product design case study for informing further research on design and rapid prototyping of simple medical equipment such as face shields for battling coronavirus-like viral pandemics through advanced engineering design, simulation and additive manufacturing applications.

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“…In order to integrate all the non-redundant physiological response variables from the thermal stress test ( F v /F m , rETR max , NPQ/4 max , R dark , Pg ), principal components analysis (PCAs) were performed in R using the function ‘prcomp’ ( Holland, 2019 ; Jurischka et al ., 2020 ) based on a correlation matrix (normalized data), with location and temperature treatments (local ambient temperature and 34°C) included as fixed factors for each coral species. Component scores for each species are reported in Supplementary Table S10 .…”

Section: Methodsmentioning

confidence: 99%

Assessment of temperature optimum signatures of corals at both latitudinal extremes of the Red Sea

Banc-Prandi

Evensen

Barshis

et al. 2022

Conservation Physiology

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Rising ocean temperatures are pushing reef-building corals beyond their temperature optima (Topt), resulting in reduced physiological performances and increased risk of bleaching. Identifying refugia with thermally resistant corals and understanding their thermal adaptation strategy is therefore urgent to guide conservation actions. The Gulf of Aqaba (GoA, northern Red Sea) is considered a climate refuge, hosting corals that may originate from populations selected for thermal resistance in the warmer waters of the Gulf of Tadjoura (GoT, entrance to the Red Sea and 2000 km south of the GoA). To better understand the thermal adaptation strategy of GoA corals, we compared the temperature optima (Topt) of six common reef-building coral species from the GoA and the GoT by measuring oxygen production and consumption rates as well as photophysiological performance (i.e. chlorophyll fluorescence) in response to a short heat stress. Most species displayed similar Topt between the two locations, highlighting an exceptional continuity in their respective physiological performances across such a large latitudinal range, supporting the GoA refuge theory. Stylophora pistillata showed a significantly lower Topt in the GoA, which may suggest an ongoing population-level selection (i.e. adaptation) to the cooler waters of the GoA and subsequent loss of thermal resistance. Interestingly, all Topt were significantly above the local maximum monthly mean seawater temperatures in the GoA (27.1°C) and close or below in the GoT (30.9°C), indicating that GoA corals, unlike those in the GoT, may survive ocean warming in the next few decades. Finally, Acropora muricata and Porites lobata displayed higher photophysiological performance than most species, which may translate to dominance in local reef communities under future thermal scenarios. Overall, this study is the first to compare the Topt of common reef-building coral species over such a latitudinal range and provides insights into their thermal adaptation in the Red Sea.

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An explorative study of polymers for 3D printing of bioanalytical test systems

Cited by 14 publications

References 64 publications

Considerations and Cautions for Three-Dimensional-Printed Personal Protective Equipment in the COVID-19 Crisis

Considerations and Cautions for Three-Dimensional-Printed Personal Protective Equipment in the COVID-19 Crisis

Design and Additive Manufacturing of Medical Face Shield for Healthcare Workers Battling Coronavirus (COVID-19)

Assessment of temperature optimum signatures of corals at both latitudinal extremes of the Red Sea

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