Title :
Pacing and sensing performance of fractally coated leads
Author :
Bolz, A. ; Fröhlich, R. ; Schaldach, M.
Author_Institution :
Dept. for Biomed. Eng., Friedrich-Alexander-Univ., Erlangen, Germany
Abstract :
During the past few years, a variety of new pacing leads has been developed to minimize energy consumption and to enhance cardiac signals. In particular the new fractal coatings improve the pacing and sensing performance of pacing Beads. In this study fractally coated bipolar and unipolar pacing leads having different geometrical surface areas were implanted. Then initial and chronic thresholds as well as R-wave amplitudes were measured, Fractally coated leads show very low threshold voltages (0.33±0.13 V) and high R-wave amplitudes (13.1±4.6 mV) (SD 60-UP, BIOTRONIK), These leads have comparable pacing thresholds in both unipolar and bipolar configurations. In addition, the results show, that fractally coated leads are “low polarization” leads. After the autoshort time of 50 ms no polarization artifact distorts the measurement of the ventricular evoked response
Keywords :
fractals; pacemakers; vapour deposited coatings; wires (electric); 0.33 V; 13.1 mV; 50 ms; BIOTRONIK; R-wave amplitude; autoshort time; bipolar pacing leads; cardiac signals enhancement; chronic threshold; energy consumption minimization; fractally coated leads; measurement distortion; pacing performance; polarization artifact; sensing performance; threshold voltage; unipolar pacing leads; ventricular evoked response; Biomedical measurements; Charge transfer; Coatings; Distortion measurement; Electrodes; Energy consumption; Fractals; Pacemakers; Polarization; Surface impedance; Threshold voltage; Time measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.412106
