Summary of failed cases with the Contour Neurovascular System
| ID | Lesion location | Aneurysm dimensions | AR | DNR | Procedural difficulties | ||
| Neck (mm) | Width (mm) | Height (mm) | |||||
| 12 | MCA | 3.3 | 4.6 | 4.4 | 1.3 | 1.4 | Unable to catheterize with XT 27 catheter so coils were attempted. Despite eventual catheterization with Echelon 10 microcatheter, balloon inflation and attempts with multiple coils, the procedure was felt to be high risk of stroke and abandoned |
| 13 | Pericallosal | 3.7 | 6.6 | 5.5 | 1.5 | 1.8 | Inability to catheterize aneurysm with XT 27 catheter therefore successfully reverted to coiling |
| 14 | MCA | 5.1 | 6.3 | 7.2 | 1.4 | 1.2 | An XT 27 was navigated into the aneurysm. There were two failed trials with two 11 mm Contour devices. Subsequently a 9×4 mm WEB was used but was not suitable and an 8×3 mm WEB was used instead with good clinical and radiological outcomes |
AR, aspect ratio (height/neck); DNR, dome/neck ratio (width/neck); MCA, middle cerebral artery.