Benchtop assessment of sealing efficacy and breathability of additively manufactured (AM) face masks

Fogarasi, Magdalene; Snodderly, Kirstie; Herman, Alexander; Guha, Sudipto; Porter, Daniel

doi:10.1016/j.addma.2023.103468

Cited by 1 publication

(5 citation statements)

References 35 publications

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“…21 Additive manufacturing, which originally started in 1980s, has seen an enormous growth in the medical device industry in 2000s for manufacturing devices for several clinical applications. 22,23 For instance, between 2010 and 2020, over 350 additively manufactured devices were cleared by US Food and Drug Administration (FDA) via 510(k) process. 23 The additively manufactured CoCr alloys were used in 4% of these cleared devices.…”

Section: (D) Astm F562mentioning

confidence: 99%

“…22,23 For instance, between 2010 and 2020, over 350 additively manufactured devices were cleared by US Food and Drug Administration (FDA) via 510(k) process. 23 The additively manufactured CoCr alloys were used in 4% of these cleared devices.…”

Section: (D) Astm F562mentioning

confidence: 99%

“…Other cleared devices contain additively manufactured Ti alloys (68%), cp-Ti (2%), stainless steel (1%), nylon (9%), PEEK (2%), and other materials (4%). 23 A variety of processes are currently used in the manufacture of CoCr alloy implants. The microstructure and precipitates (carbides, nitrides, carbonitrides, and intermetallic compounds) of CoCr alloys are primarily determined by the processing that the material undergoes during implant manufacturing.…”

Section: (D) Astm F562mentioning

confidence: 99%

“…Hence, most currently available stents, whether it is a bare metal stent or a drug‐eluting stent, are made using CoCr alloys 21 . Additive manufacturing, which originally started in 1980s, has seen an enormous growth in the medical device industry in 2000s for manufacturing devices for several clinical applications 22,23 . For instance, between 2010 and 2020, over 350 additively manufactured devices were cleared by US Food and Drug Administration (FDA) via 510(k) process 23 .…”

Section: Introductionmentioning

confidence: 99%

“…The additively manufactured CoCr alloys were used in 4% of these cleared devices. Other cleared devices contain additively manufactured Ti alloys (68%), cp‐Ti (2%), stainless steel (1%), nylon (9%), PEEK (2%), and other materials (4%) 23 …”

Section: Introductionmentioning

confidence: 99%

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A review on manufacturing processes of cobalt‐chromium alloy implants and its impact on corrosion resistance and biocompatibility

Mani,

Porter,

Collins

et al. 2024

J Biomed Mater Res

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Cobalt‐Chromium (CoCr) alloys are currently used for various cardiovascular, orthopedic, fracture fixation, and dental implants. A variety of processes such as casting, forging, wrought processing, hot isostatic pressing, metal injection molding, milling, selective laser melting, and electron beam melting are used in the manufacture of CoCr alloy implants. The microstructure and precipitates (carbides, nitrides, carbonitrides, and intermetallic compounds) formed within the alloy are primarily determined by the type of manufacturing process employed. Although the effects of microstructure and precipitates on the physical and mechanical properties of CoCr alloys are well reviewed and documented in the literature, the effects on corrosion resistance and biocompatibility are not comprehensively reviewed. This article reviews the various processes used to manufacture CoCr alloy implants and discusses the effects of manufacturing processes on corrosion resistance and biocompatibility. This review concludes that the microstructure and precipitates formed in the alloy are unique to the manufacturing process employed and have a significant impact on the corrosion resistance and biocompatibility of CoCr alloys. Additionally, a historical and scientific overview of corrosion and biocompatibility for metallic implants is included in this review. Specifically, the failure of CoCr alloys when used in metal‐on‐metal bearing surfaces of total hip replacements is highlighted. It is recommended that the type of implant/application (orthopedic, dental, cardiovascular, etc.) should be the first and foremost factor to be considered when selecting biomaterials for medical device development.

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