초록 ▼

An improved catheter assembly and method are provided for treating bifurcated vessels. The catheter assembly of the present invention includes a tubular sheath for restraining dual balloons normally biased apart. Withdrawal of the sheath allows the balloons to separate and deploy intravascular stent

An improved catheter assembly and method are provided for treating bifurcated vessels. The catheter assembly of the present invention includes a tubular sheath for restraining dual balloons normally biased apart. Withdrawal of the sheath allows the balloons to separate and deploy intravascular stents in a bifurcated vessel. The catheter assembly also includes the feature of containing two guide wire lumens in a single catheter designed to track over a single wire prior to arrival at the bifurcation, thus preventing wire wrapping and crossing of the wires.

대표청구항 ▼

1. A stent delivery assembly for treating bifurcated vessels, comprising: a dual balloon Y-shaped catheter having a proximal end and a distal end, the catheter including a first expandable member having a proximal end and a distal end, the catheter further including a second expandable member having

1. A stent delivery assembly for treating bifurcated vessels, comprising: a dual balloon Y-shaped catheter having a proximal end and a distal end, the catheter including a first expandable member having a proximal end and a distal end, the catheter further including a second expandable member having a proximal end and a distal end; a Y-shaped stent removeably mounted on the first expandable member and the second expandable member; a first guide wire lumen for receiving a first guide wire, the first guide wire lumen extending through at least a portion of the catheter including the first expandable member; a second guide wire lumen for receiving a second guide wire, the second guide wire lumen extending through at least a portion of the catheter including the second expandable member; means for retaining the first and second expandable members and the Y-shaped stent; and wherein the first expandable member and the second expandable member are normally biased apart, but are restrained and releasably held together by the retaining means to provide a low profile during delivery of the Y-shaped stent. 2. The assembly of claim 1, wherein the retaining means is a retractable sheath. 3. The assembly of claim 2, wherein the sheath is formed of a tubular polymer material taken from the group of polymers consisting of polyethylene, polyurethane, nylon, polyetherketone, polytetrafluoroethylene and polyethylene terephthalate. 4. The assembly of claim 2, wherein the second expandable member is longer than the first expandable member, a distal portion of the second expandable member protruding from the sheath to facilitate tracking.