title: Development of an implantable pulse oximeter.
abstract: A long-term implantable photoplethysmographic sensor system is proposed. The system employs an elastic cuff which is directly wrapped around an arterial blood vessel. The optically transparent cuff is equipped with light emitting diodes and a photo transistor including the technology of pulse oximetry. The sensor will permit real-time, continuous monitoring of important vital parameters such as arterial blood oxygen saturation and pulse rate over a long-term period in vivo. We emphasize on the specific requirements for design and instrumentation of the implantable sensor and discuss first in vitro data acquired with that new photonics-based sensor.
authors.affiliation: Micro-Optics Laboratory, Department of Microsystems Engineering--IMTEK, University of Freiburg, Freiburg, Germany. stephan.reichelt@gmx.de
authors.forename: Stephan
authors.initials: S
authors.lastname: Reichelt
authors.forename: Jens
authors.initials: J
authors.lastname: Fiala
authors.forename: Armin
authors.initials: A
authors.lastname: Werber
authors.forename: Katharina
authors.initials: K
authors.lastname: Förster
authors.forename: Claudia
authors.initials: C
authors.lastname: Heilmann
authors.forename: Rolf
authors.initials: R
authors.lastname: Klemm
authors.forename: Hans
authors.initials: H
authors.lastname: Zappe
mesh_terms: D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008029:Lighting / Q000295:instrumentation / Q000379:methods; D018670:Monitoring, Ambulatory / Q000295:instrumentation* / Q000379:methods; D010092:Oximetry / Q000295:instrumentation* / Q000379:methods; D019736:Prostheses and Implants; D015203:Reproducibility of Results; D012666:Semiconductors; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014159:Transducers