Magnetoelastic skin curvature sensor for biomedical applications

Kaniušas, Eugenijus; Pfützner, Helmut; Mehnen, L.; Kosel, Jürgen; Varoneckas, Giedrius; Alonderis, Audrius; Meydan, Turgut; Vizquez, M.; Rohn, M.; Merlo, A.M.; Marquardt, B.

doi:10.1109/icsens.2004.1426468

Cited by 13 publications

(11 citation statements)

References 2 publications

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“…Generally, on the neck shows a complex nature. A respiratory component is induced by the neck circumference changes due to breathing [7]. In addition, a cardiac component is induced by the blood pressure waves, as discussed above.…”

Section: ) Estimation Of Systolic Pressure and Diastolic Pressurementioning

confidence: 98%

“…1(a)]. Earlier, the SC-sensor had been successfully applied for the registration of local changes of the skin curvature yielding cardiorespiratory activity on the neck [7], cardiac acceleration on the chest [8], and other physiologic parameters [9]. As an advantage, the SC-sensor and ECG electrodes avoid any inconvenience to the patient because no active application of the pressure is involved and offer two independent parameters, i.e., and oscillations of the carotid artery wall for the estimation of .…”

Section: Introductionmentioning

confidence: 99%

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Method for continuous nondisturbing monitoring of blood pressure by magnetoelastic skin curvature sensor and ECG

Kaniušas¹,

Pfützner²,

Mehnen³

et al. 2006

IEEE Sensors J.

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This paper concerns continuous nondisturbing estimation of blood pressure using mechanical plethysmography in connection with standard electrocardiography (ECG). The plethysmography is given by a novel magnetoelastic skin curvature sensor (SC-sensor) applied on the neck over the carotid artery. The sensor consists of a magnetoelastic bilayer partly enclosed by a coil. Bending the bilayer causes large changes of magnetic permeability which can be measured by the coil. The SC-sensor signal and the ECG signal are adaptively processed in order to estimate blood pressure according to a specifically established theoretical model. The model uses estimated vessel radius changes and pulse transit time as parameters. The results show cross correlation coefficients in the range 0.8 up to 0.9 between reference and estimated values of systolic blood pressure, diastolic blood pressure, and systolic/diastolic blood pressure change, whereas the estimation error was below 4 + 7 mmHg at rest and increased with the stress level. Limitations of the model applicability are given by a hysteretic behavior of both model parameters due to inert changes in artery stiffness. The SC-sensor and the ECG electrodes cause minimal inconvenience to the patient and offer an approach for a continuous nondisturbing monitoring of blood pressure changes, as being relevant for sleep monitoring or biomechanic feedback.Index Terms-Blood pressure, electrocardiography, magnetoelastic amorphous ribbons, mechanical plethysmography, physiological sensors, skin curvature sensor.

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Section: ) Estimation Of Systolic Pressure and Diastolic Pressurementioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Method for continuous nondisturbing monitoring of blood pressure by magnetoelastic skin curvature sensor and ECG

Kaniušas¹,

Pfützner²,

Mehnen³

et al. 2006

IEEE Sensors J.

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“…We are currently working on another technology compatible with FEA modules; soft curvature sensors [11], [12], [13]. These sensors generally have similar layered structures, where multiple thin layers are sandwiched and a physical property of the outer layer changes under tension caused by the overall bending of the sensor.…”

Section: Perceptionmentioning

confidence: 99%

A modular approach to soft robots

Önal

Rus

2012

2012 4th IEEE RAS &Amp; EMBS International Conference on Biomedical Robotics and Biomechatronics (BioRob)

125

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This paper describes a modular approach to creating soft robotic systems. The basis of these systems is an elastomeric actuation element powered by direct mechanical energy in the form of pressurized fluids. Fluidic elastomer actuators are fast and inexpensive to fabricate and offer safety and adaptability to robotic systems. Arrangements of these units can yield arbitrarily complex motions and achieve various functionalities. Actuation power can be generated on-board by a pneumatic battery, which harnesses the catalyzed chemical decomposition of hydrogen peroxide into oxygen gas, for mobile implementations. The modular nature of these robots enable distributed sensing and computation elements. Composition techniques of such soft robots are defined. Example systems are demonstrated and analyzed.

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“…Rather, restricted press-on is needed to allow for free glide. With respect to the typically extremely low mass of the sensor element and the extremely high values of attainable sensitivity, special attractiveness is given for the monitoring of physiological activities which are reflected by curvature changes of the body surface [7]. Here, the sensor element can be fixed by means of a double side adhesive foil, axial stress being negligible due to lateral movements of the skin.…”

Section: Applicationsmentioning

confidence: 99%