| 摘要 |
In one aspect, the present disclosure concerns a percutancously delivered adapter stent that is deployed within a previously implanted prosthetic val ve and serves as an anchor or platform for implanting a percutaneously deliv ered replacement valve within the previously implanted valve. The adapter st ent can be delivered to the implantation site via the patient's vasculature and positioned within the previously implanted valve. The stent can then be deployed to cause the stent to expand and become anchored to the inner surfa ce of the previously implanted valve. Subsequently, the replacement valve ca n be positioned within the adapter stent and deployed to cause the replaceme nt valve to expand and become anchored to the adapter stent. The adapter ste nt and the replacement valve can be mounted on the same catheter for deliver y to the implantation site. |
