Chipscale Piezo-Magnetostrictive Interfaces - A new simplified and microminiaturized telemetry paradigm for Medical Device Packages

Sayeed, Sk Yeahia Been; Abdal, Abdulhameed; Gaire, Pawan; Bhardwaj, Shubhendu; Sorushiani, Sepehr; Volakis, John L.; Lin, Wei-Chiang; Raj, P. Markondeya

doi:10.1109/ectc32696.2021.00199

Cited by 3 publications

(1 citation statement)

References 18 publications

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“… 38 Barium titanate is incorporated into piezoelectric circuits within some medical devices. 39 There were negligible amounts in warmed infusate after exposure to the warming cartridge.…”

Section: Discussionmentioning

confidence: 96%

Levels of leachable elements from long-term use of enFlow fluid warmer

et al. 2022

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Objective: In the delivery of intravenous fluids, in-line warming devices frequently transfer heat using a metal heating plate, which if uncoated can risk elution. This bench study examined extractable elements detected following long-term use of the parylene-coated enFlow® Disposable IV/Blood Warmer. Methods: We tested 16 clinically relevant challenge fluids typical of the surgical setting, including commercially available single donor blood and blood products as well as intravenous saline and electrolyte solutions. After 72 h of warming at 40°C (104°F) via the enFlow, analytical chemistry identified and quantified the most clinically significant extractable elements (arsenic, barium, cadmium, copper, and lead) to estimate chemical exposure. We also measured the extracted concentrations of these five elements following simulated use of the device with three solutions (Sterofundin ISO, Plasma-Lyte 148, and whole blood) that were pumped through the warmed device at two different flow rates (0.2 and 5.5 mL min−1). Results: Across all scenarios of acute and long-term exposures for different populations, the enFlow demonstrated low toxicological risks as measured by the calculation of tolerable exposure for extracted arsenic, barium, cadmium, copper, and lead. Conclusion: The results suggest biological safety for the use of parylene-coated enFlow with a variety of intravenous solutions and in different therapeutic scenarios.

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“… 38 Barium titanate is incorporated into piezoelectric circuits within some medical devices. 39 There were negligible amounts in warmed infusate after exposure to the warming cartridge.…”

Section: Discussionmentioning

confidence: 96%

Levels of leachable elements from long-term use of enFlow fluid warmer

et al. 2022

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Wearable, epidermal devices for assessment of swallowing function

Rafeedi,

Abdal,

Polat

et al. 2023

npj Flex Electron

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Swallowing is an ensemble of voluntary and autonomic processes key to maintaining our body’s homeostatic balance. Abnormal swallowing (dysphagia) can cause dehydration, malnutrition, aspiration pneumonia, weight loss, anxiety, or even mortality—especially in older adults—by airway obstruction. To prevent or mitigate these outcomes, it is imperative to regularly assess swallowing ability in those who are at risk of developing dysphagia and those already diagnosed with it. However, current diagnostic tools such as endoscopy, manometry, and videofluoroscopy require access to clinical experts to interpret the results. These results are often sampled from a limited examination timeframe of swallowing activity in a controlled environment. Additionally, there is some risk of periprocedural complications associated with these methods. In contrast, the field of epidermal sensors is finding non-invasive and minimally obtrusive ways to examine swallowing function and dysfunction. In this review, we summarize the current state of wearable devices that are aimed at monitoring swallowing function and detecting its abnormalities. We pay particular attention to the materials and design parameters that enable their operation. We examine a compilation of both proof-of-concept studies (which focus mainly on the engineering of the device) and studies whose aims are biomedical (which may involve larger cohorts of subjects, including patients). Furthermore, we briefly discuss the methods of signal acquisition and device assessment in relevant wearable sensors. Finally, we examine the need to increase adherence and engagement of patients with such devices and discuss enhancements to the design of such epidermal sensors that may encourage greater enthusiasm for at-home and long-term monitoring.

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