Patent ID: 8287585

Claim:
A catheter device for administering a stent in an ostial vessel, the catheter device comprising: an expandable balloon have a proximal end and a distal end, the expandable balloon having an inflation channel extending past the proximal end for delivering inflation pressure to the expandable balloon; a catheter guidewire channel extending from a proximal end of the catheter device to a distal end of the catheter device, a distal end of the catheter guidewire channel extending past the distal end of the expandable balloon and providing a pathway for a catheter guidewire; and a radiopaque marker positioned proximal to the proximal end of the expandable balloon, the radiopaque marker having a base portion that extends around a tubular body of the catheter device and a ring channel coupled to the base portion, the ring channel being external to the tubular body of the catheter device, and the ring channel defining an opening for receiving a marker wire proximal to the expandable balloon, wherein the catheter guidewire channel is disposed external to the opening of the ring channel, wherein the base portion of the radiopaque marker is coupled to the ring channel of the radiopaque marker to form a figure-eight shape when viewed along a longitudinal axis of the catheter device.