1, spring coil system products are used for intracranial aneurysms and other neurovascular anomalies such as arteriovenous malformations and arteriovenous aneurysms, such as the implementation of endovascular embolization. They can also be used to obstruct vessels of the neurovascular system to permanently block blood flow to aneurysms or other vascular malformations, and to perform embolization of arteries and veins of the peripheral vascular system.
2. Spring coils are medical devices used in the treatment of aneurysms. Spring coils were first reported in 1991 embolization treatment of intracranial aneurysms. The distal end of the spring coil of platinum, and stainless steel guidewire connected to the aneurysm can be sent directly into the aneurysm. When direct current is applied, the spring coil attracts negatively charged blood components (red blood cells, white blood cells, platelets, etc.) and electrocoagulation occurs, resulting in the formation of a thrombus within the aneurysm, while the spring coil is connected to the stainless steel guidewire and partially dissolves due to electrolysis, and the spring coil is released and left in the aneurysm. The spring coil is extremely soft and has good compliance in the aneurysm, and can be readjusted if the placement is unsatisfactory, so it is not easy for occlusion of the aneurysm-carrying artery to occur.