Disclosed herein are proximally-flaring stents and balloon catheter systems and methods for using the same to restore patency to a side branch and its ostium at a vessel bifurcation, where the side branch can only be approached from the direction of the main artery. The system and methods include a proximally-flaring stent and one or more balloon catheters with inflatable balloons that are able to push a flanged proximal portion of the proximally-flaring stent entirely against the artery walls of the main artery of the side branch so that blood flow is not occluded.

The present disclosure provides an apparatus that includes a first catheter having a proximal end and a distal end. The apparatus also includes a first tubular housing having a proximal end and a distal end. The first tubular housing is coupled to the first catheter proximal to at least one first outlet. The apparatus also includes one or more pressure sensors coupled to the distal end of the first tubular housing. The apparatus also includes a second catheter having a proximal end and a distal end. The distal end of the second catheter is configured to be positioned substantially within a second tubular housing coupled to one or more of the first catheter and the first tubular housing, when the second catheter is in a first position.

A balloon catheter for treating a condition of a vessel near a bifurcation comprises a shaft including a proximal and distal end, and a side surface, at least one guide wire lumen extending longitudinally, a distal port extending from the guide wire lumen through the distal end, a side port extending transversely from the guide wire lumen through the side surface, and a balloon mounted on the shaft. The balloon comprises a first end sealed to the shaft proximally of the side port, a second end sealed to the shaft distally of the side port and an aperture aligned with the side port. A portion of the balloon surrounding the aperture is sealed to the shaft around the side port. The balloon may be guided to the bifurcation on a first and a second guide wires pre-positioned in main and in side branch vessel, respectively.

A multi-purpose balloon intra-cavity catheter includes a catheter having a proximal end portion, a central portion and a non-branching distal end portion, a plurality of lumens associated with the catheter extending from the proximal end portion, and a plurality of inflatable balloons positioned in the central portion and/or the non-branching distal end portion. Each of the plurality of inflatable balloons is communicatively associated with a corresponding one of the plurality of lumens, the plurality of inflatable balloons being selectively inflated or deflated to position and stabilize the catheter in a cavity for delivery of a medical treatment. The catheter can include an extraction opening associated with a lumen to remove fluids and materials from the cavity, and a connector associated with a corresponding lumen adapted to selectively receive one or more of a fluid medium or a radioactive isotope provided to a corresponding lumen for delivery of the medical treatment.

The invention relates to a balloon catheter, in particular for the widening of stents in fenestrations, being provided with a first inner balloon (4), a second outer balloon (5), with said second balloon (5) completely enclosing the first balloon (4), separate supply lines in the catheter (2) leading to the first (4) and second balloon (5), which allow the balloons (4, 5) to be pressurized independently of one another, a central lumen (3) for a guidewire, wherein in the expanded state, both balloons (4, 5) in the proximal region (P) have a diameter which is enlarged in relation to that of the distal region (D).

A stent insertion apparatus including a guide member in which a fixing part is formed includes a guide member configured to guide movement of a first stent inserted into a human body along a first guide wire inserted into a main area of stenosis to be installed in the main area of stenosis, wherein the guide member includes a fixing part configured to fix a leading end portion of a guide tube into which a second guide wire for installing a second stent is inserted, the second stent being inserted into a branched area of stenosis, which branches from the main area of stenosis, to be installed in the branched area of stenosis.

Disclosed is a system for vascular access, where the system allows for transitions between retrograde and antegrade access without generation of multiple access sites and without inducing extensive vascular damage. In embodiments, the system can include a vascular access portion including a body with a first lumen for preferentially providing access in a retrograde direction into a vessel, and a second lumen for preferentially providing access in an antegrade direction into the vessel. The body can be transitioned (e.g., by way of expansion, contraction, or other deformation mode) between a retrograde delivery mode and an antegrade delivery mode.

A multi-purpose balloon intra-cavity catheter includes a catheter having a proximal end portion, a central portion and a non-branching distal end portion, a plurality of lumens associated with the catheter extending from the proximal end portion, and a plurality of inflatable balloons positioned in the central portion and/or the non-branching distal end portion. Each of the plurality of inflatable balloons is communicatively associated with a corresponding one of the plurality of lumens, the plurality of inflatable balloons being selectively inflated or deflated to position and stabilize the catheter in a cavity for delivery of a medical treatment. The catheter can include an extraction opening associated with a lumen to remove fluids and materials from the cavity, and a connector associated with a corresponding lumen adapted to selectively receive one or more of a fluid medium or a radioactive isotope provided to a corresponding lumen for delivery of the medical treatment.

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.

A system for use in prevention of stroke is provided that has a shaft that carries an occluding balloon. The occluding balloon is inflated to occlude blood flow through at least one of a right carotid artery and a left carotid artery. An actuation device for causing inflation of the occluding balloon is present. The inflation is applied in a cyclical nature based upon a cardiac cycle. The cyclical inflation of the occluding balloon in turn causes a resulting cyclical occlusion.