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PT  - JOURNAL ARTICLE
AU  - Chaloupka, J C
AU  - Viñuela, F
AU  - Malanum, R P
AU  - Ji, C
AU  - Goller, D E
AU  - Robert, J
AU  - Duckwiler, G
TI  - Technical feasibility and performance studies of a Doppler guide wire for potential neuroendovascular applications.
DP  - 1994 Mar 01
TA  - American Journal of Neuroradiology
PG  - 503--507
VI  - 15
IP  - 3
4099  - http://www.ajnr.org/content/15/3/503.short
4100  - http://www.ajnr.org/content/15/3/503.full
SO  - Am. J. Neuroradiol.1994 Mar 01; 15
AB  - PURPOSE To conduct technical feasibility and performance studies on a new Doppler-tipped, 0.014-inch micro-guide wire for potential neuroendovascular applications. METHODS In vivo microcatheterizations of brachiocephalic arteries were performed in two swine using the 0.014-inch Doppler guide wire and a commonly used microcatheter. A standardized, bench-top method of evaluating basic mechanical properties of micro-guide wires was also used to compare the 0.014-inch Doppler guide wire with a commonly used micro-guide wire. RESULTS The 0.014-inch Doppler guide wire had similar steerability, tractability, torque control, and distal tip flexibility to the commonly used micro-guide wire in the in vivo simulations. Frequent micro-guide wire exchanges were possible without loss of superselective positioning of the microcatheter. Bench-top testing showed the 0.014-inch Doppler guide wire to have comparable distal tip flexibility and stiffness to the commonly used micro-guide wire. CONCLUSION The comparable subjective and objective mechanical properties of the 0.014-inch Doppler guide wire to that of a commonly used micro-guide wire further establishes the possibility of clinical implementation of the device.