Piezoelectric-Based Respiratory Monitoring: Towards Self-Powered Implantables for the Airways

Ruiz, Luis Lopez; Lin, Vivian; Fitzgerald, Lucy; Zhu, Joe; Borish, Larry; Quinn, Daniel; Lach, John

doi:10.1109/bsn51625.2021.9507022

Cited by 3 publications

(4 citation statements)

References 22 publications

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“…Five sample breath types from figure 2 located as indicated. Subpanel d reprinted with permission from [29]. …”

Section: Resultsmentioning

confidence: 99%

“…( b ) The transmitter produces a higher ping rate as breaths per minute (BPM) rises from 28 to 30. Reprinted with permission from [29]. …”

Section: Resultsmentioning

confidence: 99%

“…The pings were received and recorded by a software-defined radio (SDR) from SDRplay (RSP2pro). See Lopez Ruiz et al for additional details [29]. In a functioning SPD system, the ping rate would then be mapped to a flow royalsocietypublishing.org/journal/rsos R. Soc.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…See Lopez Ruiz et al . for additional details [29]. In a functioning SPD system, the ping rate would then be mapped to a flow variable of interest, e.g.…”

Section: Experimental Methodsmentioning

confidence: 99%

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Towards breath sensors that are self-powered by design

et al. 2022

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Piezoelectric materials are widely used to generate electric charge from mechanical deformation or vice versa. These strategies are increasingly common in implantable medical devices, where sensing must be done on small scales. In the case of a flow rate sensor, a sensor’s energy harvesting rate could be mapped to that flow rate, making it ‘self-powered by design (SPD)’. Prior fluids-based SPD work has focused on turbulence-driven resonance and has been largely empirical. Here, we explore the possibility of sub-resonant SPD flow sensing in a human airway. We present a physical model of piezoelectric sensing/harvesting in the airway, which we validated with a benchtop experiment. Our work offers a model-based roadmap for implantable SPD sensing solutions. We also use the model to theorize a new form of SPD sensing that can detect broadband flow information.

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“…Five sample breath types from figure 2 located as indicated. Subpanel d reprinted with permission from [29]. …”

Section: Resultsmentioning

confidence: 99%

“…( b ) The transmitter produces a higher ping rate as breaths per minute (BPM) rises from 28 to 30. Reprinted with permission from [29]. …”

Section: Resultsmentioning

confidence: 99%

Section: Experimental Methodsmentioning

confidence: 99%

“…See Lopez Ruiz et al . for additional details [29]. In a functioning SPD system, the ping rate would then be mapped to a flow variable of interest, e.g.…”

Section: Experimental Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Towards breath sensors that are self-powered by design

et al. 2022

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Self-powered and self-sensing devices based on piezoelectric energy harvesting

Chen,

Zhu,

Huang

et al. 2024

Sci. China Technol. Sci.

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Recent Advances in Energy Harvesting from the Human Body for Biomedical Applications

2022

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Energy harvesters serve as continuous and long-lasting sources of energy that can be integrated into wearable and implantable sensors and biomedical devices. This review paper presents the current progress, the challenges, the advantages, the disadvantages and the future trends of energy harvesters which can harvest energy from various sources from the human body. The most used types of energy are chemical; thermal and biomechanical and each group is represented by several nano-generators. Chemical energy can be harvested with a help of microbial and enzymatic biofuel cells, thermal energy is collected via thermal and pyroelectric nano-generators, biomechanical energy can be scavenged with piezoelectric and triboelectric materials, electromagnetic and electrostatic generators and photovoltaic effect allows scavenging of light energy. Their operating principles, power ratings, features, materials, and designs are presented. There are different ways of extracting the maximum energy and current trends and approaches in nanogenerator designs are discussed. The ever-growing interest in this field is linked to a larger role of wearable electronics in the future. Possible directions of future development are outlined; and practical biomedical applications of energy harvesters for glucose sensors, oximeters and pacemakers are presented. Based on the increasingly accumulated literature, there are continuous promising improvements which are anticipated to lead to portable and implantable devices without the requirement for batteries.

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Piezoelectric-Based Respiratory Monitoring: Towards Self-Powered Implantables for the Airways

Cited by 3 publications

References 22 publications

Towards breath sensors that are self-powered by design

Towards breath sensors that are self-powered by design

Self-powered and self-sensing devices based on piezoelectric energy harvesting

Recent Advances in Energy Harvesting from the Human Body for Biomedical Applications

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