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Proceedings Paper

Miniaturized pulse oximeter sensor for continuous vital parameter monitoring
Author(s): Jens Fiala; Stephan Reichelt; Armin Werber; Philipp Bingger; Hans Zappe; Katharina Förster; Rolf Klemm; Claudia Heilmann; Friedhelm Beyersdorf
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Paper Abstract

A miniaturized photoplethysmographic sensor system which utilizes the principle of pulse oximetry is presented. The sensor is designed to be implantable and will permit continuous monitoring of important human vital parameters such as arterial blood oxygen saturation as well as pulse rate and shape over a long-term period in vivo. The system employs light emitting diodes and a photo transistor embedded in a transparent elastic cu. which is directly wrapped around an arterial vessel. This paper highlights the specific challenges in design, instrumentation, and electronics associated with that sensor location. In vitro measurements were performed using an artificial circulation system which allows for regulation of the oxygen saturation and pulsatile pumping of whole blood through a section of a domestic pig's arterial vessel. We discuss our experimental results compared to reference CO-oximeter measurements and determine the empirical calibration curve. These results demonstrate the capabilities of the pulse oximeter implant for measurement of a wide range of oxygen saturation levels and pave the way for a continuous and mobile monitoring of high-risk cardiovascular patients.

Paper Details

Date Published: 13 July 2007
PDF: 9 pages
Proc. SPIE 6633, Biophotonics 2007: Optics in Life Science, 663313 (13 July 2007); doi: 10.1117/12.728216
Show Author Affiliations
Jens Fiala, Univ. of Freiburg (Germany)
Stephan Reichelt, Univ. of Freiburg (Germany)
Armin Werber, Univ. of Freiburg (Germany)
Philipp Bingger, Univ. of Freiburg (Germany)
Hans Zappe, Univ. of Freiburg (Germany)
Katharina Förster, Univ. Hospital Freiburg (Germany)
Rolf Klemm, Univ. Hospital Freiburg (Germany)
Claudia Heilmann, Univ. Hospital Freiburg (Germany)
Friedhelm Beyersdorf, Univ. Hospital Freiburg (Germany)

Published in SPIE Proceedings Vol. 6633:
Biophotonics 2007: Optics in Life Science
Jürgen Popp; Gert von Bally, Editor(s)

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