Transcatheter occlusion has become the procedure of choice for the majority of secundum atrial septal defects (ASDs), using a variety of devices. In contrast, non-secundum ASD correction is usually performed by surgery. Percutaneous correction of these defects may be preferable in certain instances, but the association of critical structures including partial anomalous pulmonary veins in sinus venosus ASDs or the proximity to the mitral valve in ostium primum ASDs makes commonly used devices inappropriate.

The Transcatheter Patch including its latest model, the Immediate Release Patch (IRP), has been used successfully for the occlusion of Non-Secundum ASDs including Sinus Venosus and Ostium Primum ASDs. The IRP is a wireless bio-absorbable device with a spherical shape and minimal rim requirements. Therefore, defects with deficient superior or inferior rims can be occluded without impinging on critical structures.

The purpose of this clinical investigation is to determine the efficacy of Non-Secundum ASD occlusion using the IRP. A video of a Sinus Venosus ASD occlusion performed live by professor Sievert can be seen in our Notable Case Reports section.  If you are interested in participating in this clinical investigation please contact us.