Abstract: A perfusion-type dilatation catheter which can be rapidly exchanged for another catheter without the need for exchange wires or guidewire extension wires. The dilatation catheter has an elongated catheter body with a distal guidewire port in the distal end of the catheter and a proximal guidewire port at least 10 cm but not more than 50 cm from the distal port. The catheter body has a first inflation lumen which extends from the proximal end of the catheter body to the interior of a dilatation balloon adjacent the distal end of the catheter body. A second, much shorter inner lumen is disposed between the proximal and distal guidewire ports and is adapted to slidably receive a guidewire.

Abstract: An intravascular filter for capturing embolic particles entrained in blood flowing in an arterial vessel during an interventional procedure. The filter is intended to be used as a primary filtering device in conjunction with interventional treatment procedures such as balloon angioplasty and/or stenting. The filter may also be used as a secondary filtering device in conjunction with suction in atherectomy and other interventional procedures. The filter is capable of capturing embolic particles at least as small as 150 microns in diameter, thereby increasing the safety of balloon angioplasty and stenting. The filter includes a spring-like expandable strut assembly and a filtering medium composed of a plurality of complex passageways. The filter assembly is compressible to an initial low profile delivery diameter and is expandable to a larger deployed diameter.

Abstract: A perfusion-type dilatation catheter which can be rapidly exchanged for another catheter without the need for exchange wires or guidewire extension wire. The dilatation catheter has an elongated catheter body with a distal guidewire port in the distal end of the catheter and a proximal guidewire port at least 10 cm but not more than 50 cm from the distal port. The catheter body has a first inflation lumen which extends from the proximal end of the catheter body to the interior of a dilatation balloon adjacent the distal end of the catheter body. A second, much shorter inner lumen is disposed between the proximal and distal guidewire ports and is adapted to slidably receive a guidewire.

Abstract: A perfusion-type dilatation catheter which can be rapidly exchanged for another catheter without the need for exchange wires or guidewire extension wires. The dilatation catheter has an elongated catheter body with a distal guidewire port in the distal end of the catheter and a proximal guidewire port at least 10 cm but not more than 50 cm from the distal port. The catheter body has a first inflation lumen which extends from the proximal end of the catheter body to the interior of a dilatation balloon adjacent the distal end of the catheter body. A second, much shorter inner lumen is disposed between the proximal and distal guidewire ports and is adapted to slidably receive a guidewire.

Abstract: A perfusion-type dilatation catheter which can be rapidly exchanged for another catheter without the need for exchange wires or guidewire extension wires. The dilatation catheter has an elongated catheter body with a distal guidewire port in the distal end of the catheter and a proximal guidewire port at least 10 cm but not more than 50 cm from the distal port. The catheter body has a first inflation lumen which extends from the proximal end of the catheter body to the interior of a dilatation balloon adjacent the distal end of the catheter body. A second, much shorter inner lumen is disposed between the proximal and distal guidewire ports and is adapted to slidably receive a guidewire.

Abstract: A perfusion-type intravascular catheter having an outer sheath disposed about the catheter body with a sealing element on the distal end of the sheath to seal off the distal end thereof at a location distal to perfusion ports provided in the wall of the catheter body proximal to an expandable working member such as an inflatable balloon whereby blood can be directed through the proximal perfusion ports into an inner lumen extending through the working member and out of perfusion ports provided into the walls of the catheter distal to the expandable working member to ensure that ischemic conditions do not occur distal to the catheter when the working member is expanded to perform a vascular procedure therein.

Abstract: A steerable dilatation catheter with perfusion holes for use in coronary angioplasty. The catheter has inner and outer tubular members, with an inflatable balloon near the distal end of the outer tubular member. The guidewire extends through a lumen in the inner tubular member, and the distal end portions of the tubular members are sealed to the guidewire to close the distal end of this passageway. An annular lumen is formed between the inner and outer tubular members for the passage of inflating fluid to the interior of the balloon. The sidewalls of the tubular members are sealed together completely around the inner periphery of the distal ends thereof and over a limited area proximal to the balloon. Perfusion holes extend through the sealed sidewalls of the tubular members on both the proximal and distal of the balloon.

Abstract: A balloon dilatation catheter for PCTA and other vascular procedures which provides for the perfusion of blood when the balloon is inflated to dilate the artery or otherwise impede blood flow. The catheter comprises an elongated tubular member having an inner lumen extending along the length thereof, a perfusion body secured to the distal end of the tubular member having a small diameter lumen in fluid communication with the inner lumen of the tubular member, and a large diameter lumen which allows for the perfusion of blood through the perfusion body, and a balloon disposed about the perfusion body and secured around the periphery thereof in at least two circular locations. An inflation/deflation port connects the small diameter lumen in the perfusion body to the interior of the balloon to pass inflation fluid therebetween. A guidewire is disposed within the small diameter inner lumen of the tubular member and facilitates the advancement of the catheter across the stenosis.