Procedures for vascular occlusion

摘要

A method of reducing blood flow within an aneurysm includes: injecting a contrast agent into a blood vessel including an aneurysm; deploying an occlusion device across the aneurysm; producing an image of the aneurysm including the contrast agent; and withdrawing the delivery device from the vessel after observing that the aneurysm has been obstructed by a desired amount. The image may be two-dimensional or three-dimensional. Observing that the aneurysm has been obstructed may include determining a degree of obstruction, for example by comparing an area or volume of the contrast agent in a first image and a second image. The desired amount may be a certain degree of obstruction, identification of a shape indicative of stasis such as a flat surface, an approximate hemisphere, a mushroom, or a crescent. If the occlusion device does not achieve the desired amount, a second occluding device may be deployed.

主权项

1. A method of reducing blood flow within an aneurysm, the method comprising:
injecting a contrast agent into a blood vessel comprising an aneurysm; expanding a stent, from a delivery device, across the aneurysm, such that a thrombus forms in the aneurysm; producing an image of the aneurysm including the contrast agent; observing on the image that the thrombus forms a crescent shape; and while the thrombus is in the crescent shape, withdrawing the delivery device from the vessel.