Spring ring embolization for cerebral aneurysm:material and security outcomes / 中国组织工程研究

ABSTRACT

OBJECTIVE:To summarize and analyze the clinical outcomes of coil embolization for treating cerebral aneurismal METHODS:Authors retrieved PubMed Database(http//www.ncbi.nlm.nih.gov/PubMed)and Wanfang Database(http//www wanfangdata.com.cn)by using a computer for articles concerning coil embolization for treating cerebral aneurismal published from 1990 to 2008.The key words were"aneurysm of brain,spring ring interventional therapy,embolism"in English,and"cerebral aneurysm,embolism,circlip ring,endovascular treatment"in Chinese Duplicated studies were excluded.A total of54 articles were obtained by primary screening.According to inclusion criteria,14 articles were further summarized.RESULTS:The included 14 articles exhibited that aortocranial angiography was conducted before embolism to understand intracalvarium circulation and to measure aneurysm neck and size.Following microtubular in position,superselective angiography was not performed to avoid aneurysm rupture.It was important to select suitable catheter and guide wire.Spring ring with the same diameter as aneurysm size was selected When placed it,it should be twisted around the wall of aneurysm to form a primary"frame",which was beneficial for spiral of other spring rings in the"frame".Try to make spring ring densely plugged in aneurysm to avoid aneurysm relapse.The last spring ring should not be too long so as to avoid difficulty in complete filling-in.Before disengage,the spring ring should undergo visualization to verify that it was in the aneurysm to ensure the patency of parent artery.The operation should be light and soft Following proceeding a path,the guide wire and catheter should be slightly withdrawn a part to unload the tension induced by bending,resulting in avoiding"negligence-induced leaping forwards"that may pierce the aneurysm.CONCLUSION:Spring ring endovascular embolization is an ideal method to treat cerebral aneurysm,with characteristics of microinvasion,security,reliability and definite outcomes .