Biofeedback neuromuscular electrical stimulation front-end for dysphagia treatment
2014 (English)In: IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings, IEEE Press, 2014, 612-615 p.Conference paper (Refereed)
A dedicated front-end for biofeedback neuromuscular electrical stimulation (NESM) system is proposed. For controllable dysphagia treatment, the integrated circuit (IC) provides a stimulator front-end with programmable stimulation parameters (2μA-1mA current amplitude, DC-2KHz frequency, and variable duty cycle) and an electromyogram/impedance (EMG/ETI) readout front-end with programmable gain and bandwidth (42-80dB, 0.1Hz-1.2KHz) for biofeedback. Area-efficient, low-power but high precision current controlling is achieved by inducing the sigma-delta modulator technique in the stimulation channel. The measured impedance and EMG signal are used to determine the stimulation parameters, enabling a closed loop optimized treatment. The proposed front-end is fabricated in a 0.18 μm standard CMOS process technology and dissipates a peak power of 2.3 mW at the supply voltage of 1.8 V. Measurement results on a live person are also provided to validate the system's effectiveness.
Place, publisher, year, edition, pages
IEEE Press, 2014. 612-615 p.
, Biomedical Circuits and Systems Conference, ISSN 2163-4025
Biofeedback, EMG, Neuromuscular electrical stimulation, CMOS integrated circuits, Delta modulation, Delta sigma modulation, Electromyography, Modulators, Measured impedance, Programmable gain, Programmable stimulation, Sigma Delta modulator, Standard CMOS process, Stimulation parameters
IdentifiersURN: urn:nbn:se:kth:diva-167590DOI: 10.1109/BioCAS.2014.6981800ISI: 000366049300171ScopusID: 2-s2.0-84920513530ISBN: 9781479923465OAI: oai:DiVA.org:kth-167590DiVA: diva2:815147
10th IEEE Biomedical Circuits and Systems Conference, BioCAS 2014, 22 October 2014 through 24 October 2014
QC 201505292015-05-292015-05-222016-04-04Bibliographically approved