Occlutech PDA occluder

The Occlutech® PDA Occluder consists of a flexible nitinol-braiding, whose form is reminiscent of a “champagne cork”. Distally the braiding has a flat disc shape and the disc is directly connected to the shank (body). On the proximal side the wire braiding ends in a small hub, which serves as adapter for the soft-pusher.
The occluder is enabled to taper down through its flexibility, to be brought into the duct to close with a catheter. Based on the characteristics of the used nitinol material, the product is self-shaping while being released from the sheath.

Because of the higher pressure in the aorta than in the lung artery the occluder is pressed into the duct with the disc preventing a deeper intrusion. The radial expansion forces and the tapered form of the shank support the hold of the implant. Depending on the size of the PDA, PET (polyethylene terephthalate) threads or patches are integrated ductally in the shank and in the disc to assure a better closure of the PDA defect. The PET patches are to support an effective closure of the duct.

Depending on the size of the implant, sheaths from 6F up to 9F are used.