Title :
Micro-transponder systems for medical applications
Author :
Mokwa, Wilfried ; Schnakenberg, Uwe
Author_Institution :
Fraunhofer-Institute for Microelectron. Circuits & Syst., Duisburg, Germany
fDate :
12/1/2001 12:00:00 AM
Abstract :
The low power consumption of CMOS electronics with on-chip cointegrated sensors or actuators make it ideal for use in implanted systems that need a very low power consumption. Three examples are presented here, which are powered by the energy of an external RF-field. The first microsystem described is a system for measuring the intraocular pressure (IOP). Second, a system for measuring blood pressure will be introduced The third system is used for stimulating the nerve cells of the retina of patients suffering from retinitis pigmentosa. Typical microsystem chip dimensions are about 2.5 mm × 2.5 mm and typical power consumption is about 240 μW
Keywords :
CMOS integrated circuits; biomedical telemetry; blood pressure measurement; capacitive sensors; low-power electronics; microsensors; neuromuscular stimulation; pressure sensors; prosthetic power supplies; transponders; 2.5 mm; 240 muW; CMOS electronics; blood pressure sensor; capacitive sensor; external RF-field; implanted systems; intraocular pressure sensor; long-term operation; medical application; micro-transponder systems; micromachining; microsensor systems; nerve cells stimulation; on-chip cointegrated sensors; retinitis pigmentosa; telemetry; very low power consumption; Actuators; Biomedical equipment; Blood pressure; Cells (biology); Energy consumption; Medical services; Pressure measurement; Semiconductor device measurement; Sensor systems; System-on-a-chip;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
