A 10-fr Ultrasound Catheter With Integrated Micromotor For 4-d Intracardiac Echocardiography

A 10-fr Ultrasound Catheter With Integrated Micromotor For 4-d Intracardiac Echocardiography

Lee W; Griffin W; Wildes D; Buckley D; Topka T; Chodakauskas T; Langer M; Calisti S; Bergstol S; Malacrida J P; Lanteri F; Maffre J; McDaniel B; Shivkumar K; Cummings J; Callans D; Silvestry F; Packer D

Ieee Transactions on Ultrasonics Ferroelectrics and Frequency Control

2011

2011-07

We developed prototype real-time 3-D intracardiac echocardiography catheters with integrated micromotors, allowing internal oscillation of a low-profile 64-element, 6.2-MHz phased-array transducer in the elevation direction. Components were designed to facilitate rotation of the array, including a low-torque flexible transducer interconnect and miniature fixtures for the transducer and micromotor. The catheter tip prototypes were integrated with two-way deflectable 10-Fr catheters and used in in vivo animal testing at multiple facilities. The 4-D ICE catheters were capable of imaging a 90 degrees azimuth by up to 180 degrees elevation field of view. Volume rates ranged from 1 vol/sec (180 degrees elevation) to approximately 10 vol/sec (60 degrees elevation). We successfully imaged electrophysiology catheters, atrial septal puncture procedures, and detailed cardiac anatomy. The elevation oscillation enabled 3-D visualization of devices and anatomy, providing new clinical information and perspective not possible with current 2-D imaging catheters.

ablation; Acoustics; array; atrial-fibrillation; catheterization; Echocardiography; electrophysiology; Engineering; guidance; in-vivo; pulmonary vein isolation; real-time; transseptal

Journal Article or Conference Abstract Publication

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1478-1491

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