Gastric Motility and Volume Sensing by Implanted Magnetic Sensors

Tomek, Jiří; Mlejnek, Pavel; Janásek, V.; Ripka, Pavel; Kašpar, Petr; Chen, J.

doi:10.1166/sl.2007.002

Cited by 16 publications

(5 citation statements)

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“…Implanting magnetic or other sensors can be the optimum solution for long-term continuous health monitoring or other long-term medical necessities. As a potential application, Tomek et al mentioned the control of implanted gastric electrical stimulation devices by small implanted coils [88,89]. Sensor-integrated implants are a logical continuation of pure implants and can be used to detect the smallest undesired changes of the implant or its environment to enable early intervention [90].…”

Section: Implanted Magnetic Sensorsmentioning

confidence: 99%

Magnetic Micro and Nano Sensors for Continuous Health Monitoring

Blachowicz,

Kola,

Ehrmann

et al. 2024

Micro

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Magnetic micro and nano sensors can be used in a broad variety of applications, e.g., for navigation, automotives, smartphones and also for health monitoring. Based on physical effects such as the well-known magnetic induction, the Hall effect, tunnel magnetoresistance and giant magnetoresistance, they can be used to measure positions, flow, pressure and other physical properties. In biomedicine and healthcare, these miniaturized sensors can be either integrated into garments and other wearables, be directed through the body by passive capsules or active micro-robots or be implanted, which usually necessitates bio-functionalization and avoiding cell-toxic materials. This review describes the physical effects that can be applied in these sensors and discusses the most recent micro and nano sensors developed for healthcare applications.

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Section: Implanted Magnetic Sensorsmentioning

confidence: 99%

Magnetic Micro and Nano Sensors for Continuous Health Monitoring

Blachowicz,

Kola,

Ehrmann

et al. 2024

Micro

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show abstract

“…In [6] we described implantable magnetic distance measurement system for the stomach volume estimation. The system is based on 2 mm diameter transmission and detection coils and it was working at 3 kHz frequency.…”

Section: Fully Magnetic Trackersmentioning

confidence: 99%

Long-range magnetic tracking

2012

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Two magnetic trackers are described in this paper. The first one is fully magnetic and has 1 meter range. This device can measure distance with 1 mm resolution and 1 cm total accuracy. The second system is a hybrid tracker using active magnetic ranger, three optical gyros and three micromachined inclinometers. It has 15 m range and for distances below 5 m the position accuracy is 50cm. The heading error is below 0.1 deg. .

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“…As the body liquids are highly conductive, the field frequency should be small typically 1 kHz. Simple system measuring a distance between two coils was used to monitor the movements and size of the stomach [47]. The pick-up coil has ferrite core to increase its sensitivity.…”

Section: Medical Distance and Position Sensorsmentioning

confidence: 99%

Sensors based on bulk soft magnetic materials: Advances and challenges

Ripka

2008

Journal of Magnetism and Magnetic Materials

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Gastric Motility and Volume Sensing by Implanted Magnetic Sensors

Cited by 16 publications

References 0 publications

Magnetic Micro and Nano Sensors for Continuous Health Monitoring

Magnetic Micro and Nano Sensors for Continuous Health Monitoring

Long-range magnetic tracking

Sensors based on bulk soft magnetic materials: Advances and challenges

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