The coil is advanced and retracted before final placement in the vessel, providing the possibility to withdraw the coil prior to deployment.
The difference in visualization between the bright platinum coil and the different material of the pusherwire is clear and easy to see under various imaging techniques, which aids in precise delivery of Interlock™.
The interlocking connection is a simple coupling that remains attached while inside the lumen of the catheter. Detachment of the coil requires no additional devices, simply a push outside of the catheter.
Different coils to help achieving cross sectional occlusion:
Dudeck, et al, Embolization of the Gastroduodenal Artery Before Selective Internal Radiotherapy:
A prospectively Randomized Trial Comparing Standard Pushable Coils with fibered Interlock Detachable Coils. CVIR, April 14, 2010.