Patent ID: 9050437
Filing Date: 2015-06-09
Classification: A61F,A61M

Abstract:
1. A method for positioning a catheter in the ostium of a vessel branching off from a main vessel, the method comprising: providing a device having an attachment mechanism and a stopper element, the attachment mechanism for attachment to a catheter shaft, and the stopper element located at a distal end of the attachment mechanism and projecting away from the longitudinal axis of the attachment mechanism; providing a catheter having a shaft along its length and a treatment device at a distal end thereof; attaching the attachment mechanism to the shaft of the catheter such that the stopper element is positioned proximal of the treatment device; positioning a guiding catheter in a vessel to a location proximal of the ostium; placing a guidewire through the guiding catheter and into the ostium; advancing the catheter with the device attached thereto over the guidewire and through the guiding catheter, wherein the stopper element is folded back proximally within the guiding catheter; advancing the catheter with the device attached thereto past a distal end of the guiding catheter, causing the stopper element to be released from the guiding catheter and to project outwardly with respect to the longitudinal axis of the attachment mechanism; pushing the catheter into the ostial vessel until the stopper element pushes against a wall of the main vessel at the ostium, preventing further advancement of the catheter; deploying the treatment device once the catheter is in position in the ostial vessel; and pulling the catheter and the attached treatment device proximally through the guiding catheter.