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Concept of the smart canula Print E-mail
The smart canula ® can be stretched over a mandrel and collapsed prior to intra-vascular insertion. In its “low- profile” configuration, the smart canula ® is slid over a guidewire and positioned within the target vessel.

Once in position, the guide wire and the mandrel are removed. Due to its memory, the smart canula ® expands and provides an unsurpassed lumen. Simple traction is enough for reduced diameter and removal.

Mathematical simulation of velocity contours for a standard 18F cannula with a flow of 4 l/min by computational fluid dynamics (CFD): Pressure drop accounts for 140 mmHg

For the same 18F access aperture and flow, CFD shows for an expanding design significantly lower velocity contours. Pressure drop in this setting accounts only for 49 mmHg.

Schematic cranio-caudal view of the inferior vena cava, the iliac and the femoral veins. At the target level, which is defined as the position providing optimal drainage, standard cannulas use only a cannula small fraction of the available cross sectional area.

The diameter of a self-expanding cannula is not limited by the diameter of the access vessel. As a result, drainage is superior and a pump or vacuum is not necessary for augmentation of venous return.

In vivo assessment of a standard cannula within the inferior vena cava by intra-vascular ultrasound (IVUS=*). The luminal diameter of the standard accounts for 7.2 mm. The cross-sectional area accounts for 40.7 mm2 (a fraction of the vein).

The smart canula ® in vivo as seen by IVUS* (same vena cava as shown above). The lumen of smart canula ™ is 10 mm and the cross-section- al area accounts for 78.5 mm2 : almost the double!
Patents: US 6626859, WO 015273, AU770989, JP5059305, EP1248571, US8679053, EP1651121, HK1091109, US7967776, CN02149340, US8992455, US8679053
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