Abstract: A method of inserting a stent includes inserting a unitary, monolithic catheter assembly into a cardiac artery. The catheter assembly includes a body having a proximal end and a distal end, a distal balloon mounted on the distal end, and a proximal balloon mounted on the body, proximally of the distal balloon. A balloon expandable stent is mounted on the distal balloon. The method further includes the steps of advancing the catheter assembly to a blockage in the artery until the distal balloon and the stent both extend across the blockage; inflating the distal balloon and expanding the stent; deflating the distal balloon; advancing the catheter body distally until the proximal balloon extends within the stent; expanding the proximal balloon to post-dilate the stent; deflating the proximal balloon; and withdrawing the catheter body from the artery.

Abstract: A coronary predilatation and stent deployment catheter assembly includes a single sheathless unitary catheter body having a proximal end and a distal end, a predilatation balloon located at the distal end of the body, and a stent inflation balloon located along the body a distance of between about 5 millimeters and about 15 millimeters proximally of the predilatation balloon. An expandable stent is disposed over the stent balloon. A predilatation balloon inflation connection is located proximally of the stent inflation balloon and in fluid communication with the predilatation balloon through a predilatation inflation lumen. A stent balloon inflation connection is located proximally of the stent inflation balloon and in fluid communication with the stent inflation balloon through a stent balloon inflation lumen. At least one radiopaque marker is disposed on the predilatation balloon and at least one radiopaque marker is disposed on the stent inflation balloon.

Abstract: A coronary predilatation and stent deployment catheter assembly includes a single sheathless unitary catheter body having a proximal end and a distal end, a predilatation balloon located at the distal end of the body, and a stent inflation balloon located along the body a distance of between about 5 millimeters and about 15 millimeters proximally of the predilatation balloon. An expandable stent is disposed over the stent balloon. A predilatation balloon inflation connection is located proximally of the stent inflation balloon and in fluid communication with the predilatation balloon through a predilatation inflation lumen. A stent balloon inflation connection is located proximally of the stent inflation balloon and in fluid communication with the stent inflation balloon through a stent balloon inflation lumen. At least one radiopaque marker is disposed on the predilatation balloon and at least one radiopaque marker is disposed on the stent inflation balloon.

Abstract: A coronary predilatation and stent deployment catheter assembly includes a sheathless unitary catheter body having a proximal end and a distal end. A predilatation balloon is located at the distal end of the body. A stent inflation balloon is located along the body proximally of the predilatation balloon and an expandable stent is disposed over the stent inflation balloon. A predilatation balloon inflation connection is located proximally of the stent inflation balloon and in fluid communication with the predilatation balloon and a stent balloon inflation connection is located proximally of the stent inflation balloon and in fluid communication with the stent inflation balloon. A method of operating the catheter assembly is also disclosed.