Endovascular embolization of intracranial aneurysms with electrolytically detachable coils made in China: A clinical application / 中国脑血管病杂志

ABSTRACT

Objective: To compare Sunruifa electrolytically detachable coil (SEDC; developed and produced by Huanhu Medical Apparatus and Instrument, Inc., Tianjin, China) with Sapphire detachable coil (SDC; produced by Micro Therapeutics, Inc, USA) in embolization of intracranial aneurysms in clinical application. Methods: Of the 91 patients with intracranial aneurysms, 30 were treated with SEDC (SEDC group), and 61 were treated with SDC (SDC group) for the embolization of intracranial aneurysms. Both groups were treated at the same time period, by the same surgeon, and with the same type of microcatheter. The visibility of both coils, easiness of deployment through microcatheter, uncoiling, flexibility, effect of forming a basket, dense packing, and time needed for detachment were observed under the fluoroscopy during the procedures. The patients were followed up by telephone, outpatient appointment and digital subtraction angiography. Results: A total of 108 and 271 coils were used in the SEDC group and SDC group, respectively. Both kinds of coils could be clearly visible under the fluoroscopy. Friction was observed when 2 of the coils in the SEDC group and 9 in the SDC group were pushed through the microcatheter. Five coils in the SEDC group and 8 in the SDC group were stretched during the repositioning. Electrolytically detaching time of 6 coils was more than 5 minutes in the SEDC group and 10 in the SDC group. All the outcome measures in both groups were not statistically significant. The densely packed aneurysms were 25 patients in the SEDC group, and 49 in the SDC group; neck remnant in the SEDC group and SDC group was 2 and 5 patients, respectively; the loosely packed aneurysms were 3 patients in the SEDC group, and 7 in the SDC group. There was no significant difference between the two groups. Both groups were followed up for 3 to 22 months, and no rebleeding occurred. Two patients in each group were followed up with DSA, and no recurrence of aneurysm was observed. Conclusion: SEDC can replace SDC for the occlusion of intracranial aneurysms.