Abstract: An embolic coil conveying device and a preparation method thereof are disclosed. The embolic coil conveying device includes a pusher and an embolic coil. A distal end of the pusher and a proximal end of the embolic coil are connected to serve as a detachment section. A stretch-resistant thread is disposed in the embolic coil. The stretch-resistant thread is fixed at the proximal end of the embolic coil. A conductive wire is disposed in the pusher. The stretch-resistant thread is connected to the conductive wire. Compared with the prior art, the present invention has the advantages that the stretch-resistant thread is fixed at the proximal end of the embolic coil, so that the stretch-resistant thread is connected to the conductive wire, thereby reducing the length of the detachment section, making the detachment section more flexible, and avoiding kick-out of a microcatheter due to release of the embolic coil.

Abstract: An embolization device and a coil thereof (10, 20, 30) are disclosed. The coil (10, 20, 30) is formed by joining together at least four structural elements arranged in different planes, which include at least two C-shaped elements (12) and at least one O-shaped element (13) or ?-shaped (11) element. The at least two C-shaped elements (12) are arranged in two adjacent planes and are sequentially joined together to form an S-shaped structure. The embolization device preferably includes plurality of coils (10, 20, 30) which are joined together side-by-side and end-to-end, wherein in any adjacent two coils (10, 20, 30), one is swivelable about an axis of the embolization device with respect to the other. The ?-shaped element is structurally stable, allowing the coil (10, 20, 30) to maintain good structural stability. At the same time, the three-dimensional S-shaped structure has good deflectability, which imparts high compliance to the coil (10, 20, 30).

Abstract: An embolic coil conveying device and a preparation method thereof are disclosed. The embolic coil conveying device includes a pusher and an embolic coil. A distal end of the pusher and a proximal end of the embolic coil are connected to serve as a detachment section. A stretch-resistant thread is disposed in the embolic coil. The stretch-resistant thread is fixed at the proximal end of the embolic coil. A conductive wire is disposed in the pusher. The stretch-resistant thread is connected to the conductive wire. Compared with the prior art, the present invention has the advantages that the stretch-resistant thread is fixed at the proximal end of the embolic coil, so that the stretch-resistant thread is connected to the conductive wire, thereby reducing the length of the detachment section, making the detachment section more flexible, and avoiding kick-out of a microcatheter due to release of the embolic coil.