Léandre Bolomey

Design, Realization and Measurements of a Miniature Antenna for Implantable Wireless Communication Systems

The design procedure, realization and measurements of an implantable radiator for telemetry applications are presented. First, free space analysis allows the choice of the antenna typology with reduced computation time. Subsequently the antenna, inserted in a body phantom, is designed to take into account all the necessary electronic components, power supply and bio-compatible insulation so as to realize a complete implantable device. The conformal design has suitable dimensions for subcutaneous implantation (10 × 32.1 mm). The effect of different body phantoms is discussed. The radiator works in both the Medical Device Radiocommunication Service (MedRadio, 401-406 MHz) and the Industrial, Scientific and Medical (ISM, 2.4-2.5 GHz) bands. Simulated maximum gains attain -28.8 and - 18.5 dBi in the two desired frequency ranges, respectively, when the radiator is implanted subcutaneously in a homogenous cylindrical body phantom (80 × 110 mm) with muscle equivalent dielectric properties. Three antennas are realized and characterized in order to improve simulation calibration, electromagnetic performance, and to validate the repeatability of the manufacturing process. Measurements are also presented and a good correspondence with theoretical predictions is registered.

Implanted antenna for biomedical applications

In this paper we present the design, realization and measurements of a first prototype of a complete implantable device. The RF system, working over the medical implanted communication systems (MICS) bandwidth and composed of the antenna, the battery, the transceiver for the data communication and the insulation material, has been designed and realized in order to be integrated with an implanted glucose sensor.

Remote System for Monitoring Animal Models With Single-Metabolite Bio-Nano-Sensors

A novel system for remote monitoring of metabolism in an animal model is proposed in this paper. The system is obtained by integrating bio-nano-sensors to detect single-metabolites, an electrochemical front-end made with off-the-shelf components, a radio frequency communication sub-system, and an antenna of new design. The system has been calibrated and tested for continuous monitoring of four different metabolites: glucose, lactate, glutamate, and adenosine triphosphate. Tests using animal models (mice) have been conducted to investigate tissue inflammation induced by the implanted bio-nano-sensors. These tests confirm that our system is suitable and reliable for remote monitoring of single-metabolites in experiments with animal models.

Example of Data Telemetry for Biomedical Applications: An In Vivo Experiment

This letter describes a data telemetry biomedical experiment. An implant, consisting of a biometric data sensor, electronics, an antenna, and a biocompatible capsule, is described. All the elements were co-designed in order to maximize the transmission distance. The device was implanted in a pig for an in vivo experiment of temperature monitoring.

Dual band antenna for subcutaneous telemetry applications

The use of telemetry with implantable medical devices improves the quality of the health-care system facilitating home therapy. For this purpose, small biocompatible antennas are necessary to establish reliable communication systems [1–5]. In this work we present a dual band antenna conceived to operate in vivo in a subcutaneous environment. The selected working frequencies are: the Medical Device Radiocommunication Service band (MedRadio, 401–406 MHz) [6] and the Industrial, Scientific and Medical band (ISM, 2.4–2.5 GHz). This radiator matches the requirements of a MedRadio transceiver produced by Zarlink Semiconductors [7]. The antenna together with its electronics and power supply [8] forms a versatile im-plantable telecommunication system that can be integrated with the desired medical device.

Single-metabolite Bio-Nano-Sensors and system for remote monitoring in animal models

A novel system for remote monitoring of metabolism in animal model is proposed in this paper. The system is obtained by integrating Bio-Nano-Sensors to detect single-metabolites, an electrochemical front-end made with off-the-shelf components, an RF communication sub-system, and an antenna of new design. The system has been calibrated and tested for continuous monitoring of four different metabolites: glucose, lactate, glutamate, and adenosine triphosphate (ATP). Tests with animal models (mice) have been conducted to investigate tissue inflammation induced by the implanted Bio-Nano-Sensors. The tests confirmed that our system is suitable and reliable for remote monitoring of single-metabolites in experiments with animal models.

In Vitro and In Vivo Operation of a Wireless Body Sensor Node

A wireless Body Sensor Node (BSN) and its operations are presented. The BSN comprises all the necessary components (i.e., antenna, electronics, batteries and bio-sensor) to allow continuous monitoring of physiological data. In vitro characterization validates the simulated performances, while in vivo experiment shows the capability of the system for real life telemedicine applications.