A microfabricated intravascular ultrasound scanner for intravascular interventions

David Henchi Liang; Byong-Ho Park; Aditya Koolwal; Friedrich Prinz

doi:10.1117/12.597160

22 January 2005 A microfabricated intravascular ultrasound scanner for intravascular interventions

David Henchi Liang, Byong-Ho Park, Aditya Koolwal, Friedrich Prinz

Proceedings Volume 5721, MOEMS Display and Imaging Systems III; (2005) https://doi.org/10.1117/12.597160
Event: MOEMS-MEMS Micro and Nanofabrication, 2005, San Jose, California, United States

Abstract

Minimally invasive medical therapy can reduce both healthcare costs and patient suffering. The development of submillimeter scale instruments falls in a gap of manufacturing technologies between traditional machining and microfabrication techniques. To address this need we have developed a fabrication technique based upon laser machining of tubular structures combined with shaped-memory alloy actuators to create compliant devices for minimally invasive interventions. The initial application of this approach has been to develop a forward viewing intravascular ultrasound scanner for use in guiding intravascular interventions in situations where traditional angiography and intravascular ultrasound are unable to provide adequate guidance. The ultrasound device is less than 1.5 mm in diameter and provides imaging at 20 frames per second. Imaging currently is performed with a 20 MHz 800 micron diameter transducer producing axial resolutions of approximately 150 microns. Device optimization has resulted in peak strains of less than 1% within the compliant structure resulting in device life greater than 200,000 cycles providing usable times greater than twice the anticipated procedure length. The design concepts embodied in this initial implementation will serve as a platform for a variety of self actuated minimally invasive tools.

Citation Download Citation

David Henchi Liang, Byong-Ho Park, Aditya Koolwal, and Friedrich Prinz "A microfabricated intravascular ultrasound scanner for intravascular interventions", Proc. SPIE 5721, MOEMS Display and Imaging Systems III, (22 January 2005); https://doi.org/10.1117/12.597160

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available