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Figure 1: In patients with smaller margins, an atrial septal occluder device deployed may be precariously held by the deficient margins (a) and supported by the delivery cable. Once the cable is unscrewed, the device slips to the natural lie of the septum and this exposes the deficient margins (b) and makes the device at risk for embolization. A snare is passed alongside the delivery cable to grip the screw end of the device before unscrewing the device. (c) This helps to retrieve the device if it slips out of the deficient margins

Figure 1: In patients with smaller margins, an atrial septal occluder device deployed may be precariously held by the deficient margins (a) and supported by the delivery cable. Once the cable is unscrewed, the device slips to the natural lie of the septum and this exposes the deficient margins (b) and makes the device at risk for embolization. A snare is passed alongside the delivery cable to grip the screw end of the device before unscrewing the device. (c) This helps to retrieve the device if it slips out of the deficient margins