Intracardiac ultrasound catheter using a micromachine (MEMS) actuator

Author

Zara, J.M. ; Bobbio, S. ; Goodwin-Johansson, S. ; Smith, S.W.

Author_Institution

Dept. of Biomed. Eng., Duke Univ., Durham, NC, USA

Volume

2

fYear

1999

fDate

1999

Firstpage

1173

Abstract

Catheter based intracardiac ultrasound offers the potential for improved guidance of interventional cardiac procedures. The objective of this work is the development of catheter based, forward-looking mechanical sector scanners incorporating high frequency ultrasound transducers operating at frequencies up to 20 MHz. The current transducer assembly consists of a single 20 MHz PZT piston mounted on a polyimide table that pivots on gold plated polyimide hinges. This table-mounted transducer is tilted using a linear MEMS actuator to produce a sector scan. The prototype transducer/actuator assembly was fabricated and interfaced with a personal computer to create a single channel ultrasound scanner. This paper discusses the development of and results obtained by this real time scanning system

Keywords

biomedical transducers; biomedical ultrasonics; cardiology; microactuators; ultrasonic transducers; 20 MHz; high frequency ultrasound transducers; interventional cardiac procedures; intracardiac ultrasound catheter; medical diagnostic imaging; micromachine actuator; personal computer; polyimide table; real time scanning system; sector scan; single 20 MHz PZT piston; table-mounted transducer; transducer assembly; Assembly; Catheters; Fasteners; Frequency; Gold; Micromechanical devices; Pistons; Polyimides; Ultrasonic imaging; Ultrasonic transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE

Conference_Location

Caesars Tahoe, NV

ISSN

1051-0117

Print_ISBN

0-7803-5722-1

Type

conf

DOI

10.1109/ULTSYM.1999.849206

Filename

849206