Prosthesis delivery system

摘要

Disclosed herein are implantable, radially expandable medical prostheses, including but not limited to stents, and delivery and loading systems applicable to the same, including disposable, detachable distal chambers, and methods for using the same.

主权项

1. A prosthesis delivery system, comprising:
an elongate tubular body having a proximal end, tubular body, distal end, and a central lumen therethrough, the distal end comprising a distal chamber detachable from the remainder of the elongate tubular body, the distal chamber having a first rigid distal segment and a second flexible proximal transition segment, the first distal segment having an inner diameter, the inner diameter of the first distal segment being substantially constant and configured to house therethrough a prosthesis in a less than fully compressed configuration, the second proximal transition segment having an inner diameter that generally decreases from the distal end to the proximal end of the transition segment, the second proximal transition segment having an axial length that is at least 1.5× the inner diameter of the first distal segment, the tubular body having an inner diameter smaller than the inner diameter of the first distal segment of the chamber, and a retrieval element configured to move the prosthesis proximally from the chamber, through the transition segment into the tubular body, thereby transforming the prosthesis from the less than fully compressed configuration when stored in the chamber to a fully compressed configuration.