2010 Design of Medical Devices Conference Abstracts

Hydraulic Remotely Adjustable Pulmonary Artery Banding PUBLIC ACCESS

[+] Author and Article Information
Davide Dal Pozzo, Martin Deterre, Damien Eggenspieler, Maxim Lobovsky


Frank Pigula

Boston Children Hospital

Alexander H. Slocum

Massachusetts Institute of Technology

J. Med. Devices 4(2), 027526 (Aug 10, 2010) (1 page) doi:10.1115/1.3443318 History: Published August 10, 2010


Each year approximately 2000 children are born with a form of congenital heart disease that would benefit from mechanical restriction, or banding, of the pulmonary artery. [1,2] Installing or changing the setup of the banding requires an open chest surgery and during the first 6 months of the patient’s life, physiological parameters evolve rapidly, resulting in need for frequent reoperations. Mortality for those treated patients may be as high as 10–20%. [3] While many devices have been patented, none of them have been adopted due to size, adjustability, or reliability constraints with regard to implantation in newborns, especially below 6 months of age. Here we present the conception, design, and scale model testing of a novel pulmonary banding system for infants. This system features a hydraulic mechanical stepper actuator that offers great advantages in both reliability and compactness. As a proof of concept, we built a 5:1 scale working prototype that demonstrated the desired functionality of the device. Further steps involve scaling down the device so first porcine trials can be started.

Copyright © 2010 by American Society of Mechanical Engineers
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