From my experience , i would prefer you to not to go for device closure…Many of those people who shared their experience with me, are on medicines even after 2 -3 years and are having frequent migranes and many other issues.
In my case i had a 3.1cm ASD which was closed through a least invasive surgery…I am doing well,it has short recovery .Read my experience here
There is robotic as well as manual surgery performed in this way…It took me almost 2 years to make a right decision…