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The demonstration will show ECG signal acquisition and processing on a dedicated System-on-a-Chip (SoC) [1], and display of the raw and processed data on the screen of a laptop. This SoC has been developed within the European project IcyHeart [2]. The objective of the IcyHeart project was to investigate and demonstrate a highly integrated and power-efficient microelectronic solution for remote monitoring...
This paper reports on the design, development, and test of a compact battery-powered wireless electrocorticography (ECoG) system. The system benefits from a new design for capacitive links that allows for bidirectional data exchange between the implant unit and the external world. A stainless steel package is designed and machined to contain a rigid 8-channel microelectrode array (MEA), a main electronic...
This paper proposes a power harvest circuit design to combine the received power from three orthogonal receiving coils for the wireless capsule endoscopy. The inductive coupling power harvest circuit consists of three orthogonal coils with parallel LC resonant tank, three rectifiers and an output filtering capacitor. The topology of LC resonant tank and rectifier are discussed. The theoretical expression...
This paper proposes a new coil structure for inductive powering to wearable/implantable biomedical devices. This structure is virtually independent from the direction (and alignment) of the receiving coil relative to the transmitting coil. In addition to conducting experimental tests and characterizations, the proposed coil structure (energized by a transmitting coil) has been used to power up a real...
This paper presents a programmable wireless platform for biomedical signal acquisition application. The platform includes 8-channel programmable low-noise frontend circuits, a 12-bit SAR ADC, a digital control and processing unit (DCPU), and a RF transceiver. The number of the readout channels in the platform can be programmable according to the requirements of the applications. And the platform can...
Neuromuscular stimulation (“NMS”) is frequently caused by application of various types of energy (radiofrequency, ultrasonic, or even mechanical) during surgical procedures. Neuromuscular blocking drugs do not always provide complete paralysis, resulting in potentially dangerous muscle stimulation events. In the case of radiofrequency energy, modification of the spectral content may serve to minimize...
The wireless body area network (WBAN) includes up to ten sensor nodes and an external control unit to synchronize the wireless power transfer and communication. A battery operated sensor node is designed using discrete components and tested on standard FR4 substrate. The board dimensions are 2.7 × 4.9 cm2 which fits inside the Kinetra neurostimulator casing provided by Medtronic, wherein a six elements...
This paper introduces a new impulse-radio ultra-wideband (IR-UWB) technique, combined with pulse-width modulation (PWM), to be referred to as PWM-IR-UWB, for low-power data transmission. Power saving is achieved at the transmitted (Tx) side by reducing the number of transmitted pulses for each sample. Amplitude information is encoded in the time and modulated within a sampling period, similar to PWM...
This paper details the development of a multi-sensor platform designed to support functional monitoring and knee rehabilitation via its integration into a smart garment. The system incorporates flexible conductive polymer sensors, interfaced to a customized body sensor node with embedded accelerometer and gyroscope sensors. The body node was specifically developed for unobtrusive sensor data acquisition...
Advanced testing of medical treatments involves experimentation on small laboratory animal subjects, such as genetically modified mice. These subjects are used to help researchers develop medication and cures for humans. Thus, in order to understand the effects of the treatments on the subject's body the researchers have the need to monitor various bio-signals during these experiments including blood...
In this demo, a wireless multichannel measurement system based on an ASIC designed for bioelectrical impedance (BI) measurements in a wide frequency range is presented. The on-chip spectrometer provides powerful measuring capabilities and, together with a commercial ZigBee device, constitutes a wireless node to develop portable health monitoring applications.
Monitoring of bladder pressure, known as cystometry, is a key diagnostic tool in urodynamic studies of patients that exhibit lower urinary tract symptoms. Over the past few years, there has been an increased interest in ambulatory urodynamics due to the increased convenience and more realistic monitoring environment. This paper presents an ultra-low power implantable wireless platform, UP-Link, for...
This paper introduces a noncoherent low-power BPSK demodulator and clock recovery circuit for wirelessly-powered biomedical implants. The received data are detected using a pulse width measurement technique, which is based on complementary analog voltage slopes generated by charging two capacitors with constant currents. In addition to low power consumption and simple circuit implementation, the proposed...
This article presents integration of a wireless power transmission and bidirectional data communication system for implantable neural recording applications. Wireless power transfer is realized by means of magnetic coupling at 10 MHz achieving 36% efficiency. Downlink communication at 1 Mbps is realized on the same frequency as the wireless power transmission by changing the amplitude of the source...
In this paper a photovoltaic energy harvesting system for wireless body area network applications is presented. The device is able to store the energy produced by the harvester in a storage element, acquire data from a generic body sensor and transmit the information wirelessly to an external receiver. The system is supplied by a thin-film photovoltaic energy harvester, which is capable of ensuring...
This paper presents a multi-receiver wireless inductive power link for freely moving animal research systems. The proposed system includes a power transmitter chamber, employing a novel resonance-based multicoil array structure, and two power receivers. This system features a uniform power transmission in 3D and provides natural power localization mechanism without additional circuitry to locate the...
Current methods in treating chronic wounds have had limited success in large part due to the open loop nature of the treatment. In turn, we have created a localized smart wound dressing platform that will allow for real time data acquisition of oxygen concentration at the wound site. This will serve as the first leg of a feedback loop for a fully optimized treatment mechanism tailored to the individual...
This paper presents the electrical and in-vivo validation of a compact, low-noise and low-power integrated circuit for the acquisition of cortical signals in a high-density implantable system. Using a three-stage topology, the proposed architecture enables a compact implementation of the analog front-end, while preserving a low-noise and lower-power performance. A wireless energy transfer module is...
Rodents are the most widely used animal model in the study of human disease and drug administration technologies suitable for use in rodents are therefore critically important in the development of new treatments. Implantable drug delivery devices provide site specific and controlled drug administration while eliminating frequent handling, tethers, and stress induction associated with other drug delivery...
Feeding and swallowing disorders are relatively common in early infancy. In Clinical, it shows negative impacts on growth and neurodevelopmental, therefore it has become a high risk of neurodevelopmental delays in preterm infants. Oral feeding that requires suckling, swallowing, and breathing coordination, and it is the most complex sensorimotor process for the newborn infant. Currently, both preterm...
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