Silicon sensors for catheters and guide wires

Hans F.L. Goosen

doi:10.1117/12.454590

19 November 2001 Silicon sensors for catheters and guide wires

Hans F.L. Goosen

Proceedings Volume 4590, BioMEMS and Smart Nanostructures; (2001) https://doi.org/10.1117/12.454590
Event: International Symposium on Microelectronics and MEMS, 2001, Adelaide, Australia

Abstract

One area that can make use of the miniature size of present day micro electromechanical systems (MEMS) is that of the medical field of minimally invasive interventions. These procedures, used for both diagnosis and treatment, use catheters that are advanced through the blood vessels deep into the body, without the need for surgery. However, once inside the body, the doctor performing the procedure is completely reliant on the information the catheter(s) can provide in addition to the projection imaging of a fluoroscope. A good range of sensors for catheters is required for a proper diagnosis. To this end, miniature sensors are being developed to be fitted to catheters and guide wires. As the accurate positioning of these instruments is problematic, it is necessary to combine several sensors on the same guide wire or catheter to measure several parameters in the same location. This however, brings many special problems to the design of the sensors, such as small size, low power consumption, bio-compatibility of materials, robust design for patient safety, a limited number of connections, packaging, etc. This paper will go into both the advantages and design problems of micromachined sensors and actuators in catheters and guide wires. As an example, a multi parameter blood sensor, measuring flow velocity, pressure and oxygen saturation, will be discussed.

Citation Download Citation

Hans F.L. Goosen "Silicon sensors for catheters and guide wires", Proc. SPIE 4590, BioMEMS and Smart Nanostructures, (19 November 2001); https://doi.org/10.1117/12.454590

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