Devices, systems, and methods for implanting a patient-specific prosthesis at a treatment site in a patient are disclosed herein. In some embodiments, a patient-specific prosthesis includes a tubular graft and a coupling member. A fenestration can be disposed in the tubular graft, the fenestration corresponding to a predicted branch blood vessel location. The coupling member can be disposed about the fenestration. The coupling member can include a coil configured to expand from a first configuration to a second configuration in response to the application of an expanding force. The coil can be configured to contract to a third configuration upon removal of the expanding force.

A system comprising a stent and a stent delivery device configured with a tiny intravascular ultrasound (“IVUS”) transducer on the tip of a delivery catheter which can image the interior of blood vessels. Methods for treating ostial or bifurcated lesions using the system.

A system comprising a stent and a stent delivery device configured with a tiny intravascular ultrasound (“IVUS”) transducer on the tip of a delivery catheter which can image the interior of blood vessels. Methods for treating ostial or bifurcated lesions using the system.

The stent graft includes a main body and an external coupling. The main body extends along a longitudinal axis and includes proximal and distal ends. The external coupling extends away from the main body and defines an opening having a center. The main body includes a first bracketing stent extending about a proximal side of the external coupling. The first bracketing stent includes first and second peaks. The first peak is circumferentially aligned with the center of the external coupling. The first peak is proximal the second peak about the main body along the longitudinal axis.

Provided is a stent that can be easily and reliably placed in a branched portion of a biological lumen. A stent is configured to be placed within a biological lumen and comprises: a first skeleton which is for placement within a first lumen of the biological lumen, and which is made of a wire material and formed into a tubular shape; and second skeletons which are for placement within a plurality of second lumens branched from the first lumen, and which are made of a wire material different from that of the first skeleton and whish are formed into a tubular shape. The plurality of second skeletons are provided so as to branch from one end section of the first skeleton and are engaged with each other at the branched portion.

Provided is a stent that can be easily and reliably placed in a branched portion of a biological lumen. A stent is configured to be placed within a biological lumen and comprises: a first skeleton which is for placement within a first lumen of the biological lumen, and which is made of a wire material and formed into a tubular shape; and second skeletons which are for placement within a plurality of second lumens branched from the first lumen, and which are made of a wire material different from that of the first skeleton and whish are formed into a tubular shape. The plurality of second skeletons are provided so as to branch from one end section of the first skeleton and are engaged with each other at the branched portion.

Methods for crimping a stent on an expandable member of a delivery catheter, and devices and methods for treating a bifurcation are disclosed. A method for crimping includes positioning a stent having a first portion and a second portion over the expandable member, and non-uniformly crimping the stent to the expandable member. The method can include routing an elongate shaft under the second portion of the stent and through the side hole so as to be routed external to the first portion. The stent second portion can be crimped so that the elongate shaft can be slidably disposed relative to the stent second portion prior to deployment of the stent.

Methods for crimping a stent on an expandable member of a delivery catheter, and devices and methods for treating a bifurcation are disclosed. A method for crimping includes positioning a stent having a first portion and a second portion over the expandable member, and non-uniformly crimping the stent to the expandable member. The method can include routing an elongate shaft under the second portion of the stent and through the side hole so as to be routed external to the first portion. The stent second portion can be crimped so that the elongate shaft can be slidably disposed relative to the stent second portion prior to deployment of the stent.

A system for treating a bifurcated vessel that includes a first delivery catheter and a second delivery catheter. The first delivery catheter carries a proximal first stent and a distal second stent. The first delivery catheter also has a first elongate shaft, a proximal first expandable member with the proximal first stent disposed thereover, and a distal second expandable member with the distal second stent disposed thereover. The proximal first expandable member and distal second expandable member are independently expandable of one another. The second delivery catheter carries a third stent. The second delivery catheter also has a second elongate shaft, and a third expandable member with the third stent disposed thereover. The third expandable member is independently expandable of the proximal first expandable member and the distal second expandable member.

A system for treating a bifurcated vessel that includes a first delivery catheter and a second delivery catheter. The first delivery catheter carries a proximal first stent and a distal second stent. The first delivery catheter also has a first elongate shaft, a proximal first expandable member with the proximal first stent disposed thereover, and a distal second expandable member with the distal second stent disposed thereover. The proximal first expandable member and distal second expandable member are independently expandable of one another. The second delivery catheter carries a third stent. The second delivery catheter also has a second elongate shaft, and a third expandable member with the third stent disposed thereover. The third expandable member is independently expandable of the proximal first expandable member and the distal second expandable member.