Ostium Secundum Atrial
Septal Defect Closure
Thomas Hoy
Department of Biomedical Engineering
BME 272 Senior Design
Background

What is a Ostium
Secundum Atrial Septal
Defect?
•
•

congenital heart disease
causes left to right
shunting across interatrial
septum
Why should we care?
• Isolated secundum atrial
septal defects of
significance occur in
approximately 70,000100,000 individuals today.
• Isolated ASDs can cause
congestive heart failure or
Eisenmengers syndrome
Techniques Used Today

Surgical Suture & Surgical Patch
• Both require open heart surgery
• Requires stopping the patient's heart
and utilizing cardiopulmonary bypass

Transcatheter Amplatzer septal
occluder
• Pioneer in 1976
• Minimally invasive with excellent results
Both Cost The Same
Project Definition

To design a device that should:
• Provide more accurate application
• Less strain on the applied interatrial wall
• Stimulate endotheliazation of the device
• Be lower in cost and more simplistic in
design
• Improve the quality of life of the patient
Current Status

Research
• History of device and methods used
• Success rate and cost analysis of those
devices an methods
• Study of the engineering aspects of the
Amplatzer design

Brainstorming possible solutions to
this problem
Future Work




Scheduled meeting with advisor to
discuss progress
Continued brainstorming and
documentation of possible designs
and implementation devices
Study engineering possibilities of
designs and modeling
Model