| abstract |
(57) [Summary] A method and apparatus for using a vascular system as a conduit to reach a blood vessel in a body or a part other than a blood vessel. And methods of re-angiogenesis for the purpose of forming It also includes a method of performing a transvascular tissue surgery (TVIS) to form an extravascular passage from a blood vessel to another blood vessel or a site in the body other than the blood vessel. Also, according to the present invention, there is disclosed a device used in forming an extravascular passage, a device used in modifying the extravascular passage, and a device used in providing a valve in the extravascular passage. Devices that are used to maintain extravascular passages and devices that are used to close extravascular passages are disclosed. |