The invention relates to a medical device, the medical device comprising a balloon catheter, a first stent, and a second stent; the balloon catheter having a shaft and an inflatable balloon mounted to the shaft at the distal end the balloon having a distal portion having a first outer diameter and a proximal portion having a second outer diameter, wherein the first diameter is smaller than the second diameter and a transition region located between the distal portion and the proximal portion, a first stent having a first nominal diameter mounted on the distal portion of the balloon and a second stent having a second nominal diameter mounted on the proximal portion of the balloon, a distal portion of the second stent overlapping a proximal portion of the first stent, wherein the proximal end of the first stent is positioned proximal to the distal end of the second stent, the medical device further comprising a pre-cannulation means providing a passage from the interior of the second stent to the exterior of the first stent passing the stent overlapping portion between the inner surface of the second stent and the outer surface of the first stent.

An elongated catheter assembly defines a catheter lumen configured to receive the distal guidewire section of the guidewire, and also defines an axial portal and a radial portal. A guidewire deflector is mounted to the elongated catheter assembly. The guidewire deflector is configured to selectively deflect urged axial movement of the distal guidewire section of the guidewire away from the axial portal and radially toward the radial portal.

Medical devices and methods for placing a bifurcated stent into a bifurcating blood vessel are described herein. Also, described herein are methods for treating aorto-iliac occlusive disease. The bifurcated stent can be mounted onto a catheter comprising at least two balloons by mounting a first branch stent of the bifurcated stent onto a first balloon and a second branch stent of the bifurcated stent onto a second balloon, and a main body of the bifurcated stent onto the first balloon and second balloon.

An infusion catheter includes a housing, a proximal shaft assembly, a first distal shaft assembly and a second distal shaft assembly. The housing has one or more inflation ports and one or more infusion ports. The proximal shaft assembly supports a first balloon. The first distal shaft assembly extends distally from the proximal shaft assembly and supports a first distal balloon. The second distal shaft assembly extends distally from the proximal shaft assembly and supports a second distal balloon. The first and second distal shaft assemblies define infusion openings in fluid communication with the one or more infusion ports. The infusion catheter may be inserted into a uterine cavity to occlude tubal ostia and an internal cervical OS of the uterine cavity for sealing the uterine cavity. A therapeutic agent may be delivered through the infusion catheter and into the sealed uterine cavity to treat the uterine cavity.

Systems and methods for deploying one or more stents within a bifurcated vessel are disclosed. A bifurcation-stent can include a main-branch portion and first and second side-branch portions each mechanically attached to the main-branch portion. The first and second side-branch portions are mechanically attached together at a branch point proximate the distal end of the main-branch portion. The bifurcation-stent can be disposed on two balloon catheters for deployment to a bifurcation. The bifurcation-stent is advanced within a main branch until it reaches the carina of the bifurcation, such as when the branch point abuts the carina. The bifurcation-stent can be deployed by inflating the balloon catheters such that the main-branch portion is disposed in the main vessel and the first and second side-branch portions are disposed in separate, respective side branches of the bifurcation.

The present disclosure provides an apparatus including a first tubular housing including a first exit port and a second tubular housing including a second exit port. The apparatus also includes a third tubular housing coupled to at least one of the first tubular housing and the second tubular housing such that each of the first tubular housing, the second tubular housing, and the third tubular housing are fixed with respect to one another. The apparatus also includes a first catheter including a first plurality of outlets and is configured to be positioned at least partially within the first tubular housing. The apparatus also includes a second catheter including a second plurality of outlets and is configured to be positioned at least partially within of the second tubular housing. The apparatus also includes a pressure transducer line positioned in the third tubular housing and a pressure transducer coupled to the pressure transducer line.

The present disclosure provides an apparatus including a first tubular housing including a first exit port and a second tubular housing including a second exit port. The apparatus also includes a third tubular housing coupled to at least one of the first tubular housing and the second tubular housing such that each of the first tubular housing, the second tubular housing, and the third tubular housing are fixed with respect to one another. The apparatus also includes a first catheter including a first plurality of outlets and is configured to be positioned at least partially within the first tubular housing. The apparatus also includes a second catheter including a second plurality of outlets and is configured to be positioned at least partially within the second tubular housing. The apparatus also includes a pressure transducer line positioned in the third tubular housing and a pressure transducer coupled to the pressure transducer line.

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.

Balloon catheters with an elongate shaft defining a hollow body have an inflatable balloon at a distal end thereof. The balloon has a plurality of internal chambers that are inflatable to differing pressures. When inflated, the balloon has a generally hourglass shape having a neck between a distal end and a proximal end and a port at the neck that is in open communication the hollow body of the shaft and in open communication with an environment external to the balloon. The balloon catheter is inflated in a lumen of a patient to its hourglass shape with its proximal and distal ends in direct contact with normal endothelium juxtaposed to a target lesion with the neck of the balloon at the target lesion. A cutting tool is deployed through the port and an opening having a flap is cut into the target lesion and the plaque is removed thereof.