Wirelessly powered signal regeneration to improve the remote detectability of an inductive pressure sensor.

08:00 EDT 23rd July 2019 | BioPortfolio

Summary of "Wirelessly powered signal regeneration to improve the remote detectability of an inductive pressure sensor."

Chronic pressure monitoring by wireless and batteryless sensors are desirable for maintaining proper function of biomedical implants. Compared to capacitive, piezoelectric and piezoresistive sensors, inductive sensors are less susceptible to capacitance fluctuation in the environment, and they can convert loading pressure into inductance changes for wireless detection as resonance frequency shifts. However, inductive sensors normally require the use of ferromagnetic materials for frequency tuning; their frequency responses are harder to detect over larger distance separations. Without using ferromagnetic materials, we will utilize two coaxially coupled resonators whose mutual inductance (and thus resonance frequency) is modulated by the thickness of an elastic substrate that can deform under pressure loading. By modifying one of the coupled resonators into a parametric resonator that contains nonlinear capacitors and an extra conductor across its virtual grounds, the sensor can utilize wireless pumping power to enlarge backscattered signals whose peak response frequency is linearly correlated with the loading pressure. This linear relation is observable beyond the near-field region, even though the distance separation between the sensor and the measurement loop is 10-fold the sensor's circuit dimension. This novel concept of wirelessly powered signal regeneration will improve the remote detectability and operation flexibility of various physiological sensors.


Journal Details

This article was published in the following journal.

Name: IEEE transactions on biomedical circuits and systems
ISSN: 1940-9990


DeepDyve research library

PubMed Articles [10588 Associated PubMed Articles listed on BioPortfolio]

Assessment of miniaturized ultrasound-powered implants: an in vivo study.

Therapeutic applications of implantable active medical devices have improved the quality of patient life. Numerous on-going research in the field of neuromodulation and bioelectronics medicine are exp...

Evaluation of MRI Issues for a New Wirelessly Powered, Spinal Cord Stimulation Lead With Receiver.

MRI is an imaging modality frequently ordered for patients with neuromodulation systems implanted for spinal cord stimulation. The purpose of this investigation was to evaluate MRI safety issues (magn...

Auxin driven indoleamine biosynthesis and the role of tryptophan as an inductive signal in Hypericum perforatum (L.).

In the 60 years since Skoog and Miller first reported the chemical redirection of plant growth the underlying biochemical mechanisms are still poorly understood, with one challenge being the capacity ...

The Microbead: A 0.009 Formula: see text implantable wireless neural stimulator.

Wirelessly powered implants are increasingly being developed to interface with neurons in the brain. They often rely on microelectrode arrays which are limited by their scalability and long-term stabi...

Biointegrated and Wirelessly Powered Implantable Brain Devices: A Review.

Implantable neural interfacing devices have added significantly to neural engineering by introducing the low-frequency oscillations of small populations of neurons known as local field potential as we...

Clinical Trials [3290 Associated Clinical Trials listed on BioPortfolio]

Efficiency of the Super Inductive System in Spasticity Treatment

The aim of the study is to see whether a physical therapy program can relieve pain, decrease spasticity and increase muscle contraction force by using the super inductive system (high freq...

Stroke Rehabilitation Program Based on a Powered Lower Extremity Exoskeleton in Chile

This research will study the effects of a rehabilitation program assisted by a powered lower extremity exoskeleton in patients after stroke. It will compare clinical and biomechanical feat...

EEG Analysis During Light Propofol Sedation

The hypothesis of this study is that propofol sedation does not affect the detectability of a movement intention in the EEG motor cortex signal. EEG signals will be recorded during the rea...

Subjective Evaluation of Auditory Distance Perception With Hearing Aids

Within the course of this study, a signal processing algorithm has been developed at Ecole Polytechnique Fédérale de Lausanne (EPFL), in collaboration with Sonova AG, in order to enhance...

Remote Observed Dosing of Suboxone to Improve Clinical Practice

This is a 15-week, outpatient study of remote observed dosing to improve suboxone compliance in opiate dependent subjects.The main purpose of this study is to see if watching patients take...

Medical and Biotech [MESH] Definitions

Psychophysical technique that permits the estimation of the bias of the observer as well as detectability of the signal (i.e., stimulus) in any sensory modality. (From APA, Thesaurus of Psychological Index Terms, 8th ed.)

Consultation via remote telecommunications, generally for the purpose of diagnosis or treatment of a patient at a site remote from the patient or primary physician.

Procedures for enhancing and directing tissue repair and renewal processes, such as BONE REGENERATION; NERVE REGENERATION; etc. They involve surgically implanting growth conducive tracks or conduits (TISSUE SCAFFOLDING) at the damaged site to stimulate and control the location of cell repopulation. The tracks or conduits are made from synthetic and/or natural materials and may include support cells and induction factors for CELL GROWTH PROCESSES; or CELL MIGRATION.

A preparation consisting of PLATELETS concentrated in a limited volume of PLASMA. This is used in various surgical tissue regeneration procedures where the GROWTH FACTORS in the platelets enhance wound healing and regeneration.

A nervous tissue specific protein which is highly expressed in NEURONS during development and NERVE REGENERATION. It has been implicated in neurite outgrowth, long-term potentiation, SIGNAL TRANSDUCTION, and NEUROTRANSMITTER release. (From Neurotoxicology 1994;15(1):41-7) It is also a substrate of PROTEIN KINASE C.

Quick Search

DeepDyve research library

Searches Linking to this Article