Coil System(Ton-bridgeMT) for Endovascular Embolization of Cranial Aneurysms

Inclusion Criteria: * Age 18-80 years. * Subject has a target intracranial aneurysm (IA) diagnosed by DSA, and intended to be embolised with coil system. * Subject or guardian is able to understand the purpose of study, agrees to comply with protocol requirements and has provided written informed consent. Exclusion Criteria: * Subject is diagnosed as multiple aneurysms. * Subject is diagnosed as intracranial bulloid, fusiform, false, dissectimng, infective aneurysm or with arteriovenous malformation. * mRS score≥3. * Hunt and Hess classification≥4. * Subject has emergency ruptured aneurysms and needs assisting stent. * The target aneurysm has received endovascular embolization or surgical treatment. * The aneurysm carrier artery has severe stenosis. * PLT\<60×109/L or INR\>1.5. * Subject has nonfunction of important organs or other severe diseases. * Major surgery in the last 30 days, or intending to receive surgical treatment in 90 days after enrollment. * Subject is allergic to antiplatelet drugs, anticoagulants, anesthetics, contrast agents or any related contraindication. * History of allergies to platinum and tungsten. * Expected life \<12 months. * Pregnant or lactating women. * Subject has participated in any other drug or medical device clinical trials in 1 month before writting informed consent . * Other circumstances judged by researchers are not suitable for enrollment .