Abstract: A device for introduction into a body vessel includes a main elongated element, a balloon positioned at the main elongated element distal end, a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use, and a longitudinally movable sheath positioned external to the main elongated element, a position of the sheath distal end with respect to the balloon defining an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen.

Abstract: Embolization particles can be safely delivered to the left gastric artery of a patient by introducing the distal end of a catheter in the patient's left gastric artery, inflating a balloon located near the distal end of the catheter so that the balloon prevents blood from flowing through the left gastric artery, and injecting a mixture of particles and contrast agent into the proximal end of the catheter so that they flow through the catheter. In addition, a path is provided for blood to flow into the catheter through an opening in the sidewall of the catheter at a position that is proximal to the balloon, and out through the distal end of the catheter. This blood flow helps to carry the particles along to their destination in the distal portion of the left gastric artery. The particles are also prevented from flowing into portions of the patient's artery system that are proximal of the balloon.

Abstract: Methods and apparatuses for embolizing an artery in a living subject using a catheter are disclosed. The catheter has a lumen and also has a balloon located near the distal end of the catheter. The distal end of the catheter is introduced into the artery, and the balloon is inflated to form a seal that prevents blood in the artery from flowing past the balloon. A mixture that includes embolic particles and contrast agent is injected through the lumen into the portion of the artery that is distally beyond the balloon. The subject's own blood or another fluid that contains platelets is injected through the lumen into the portion of the artery that is distally beyond the balloon. Subsequently, the balloon is deflated and the distal end of the catheter is withdrawn.

Abstract: A device for introduction into a body vessel includes a main elongated element, a balloon positioned at the main elongated element distal end, a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use, and a longitudinally movable sheath positioned external to the main elongated element, a position of the sheath distal end with respect to the balloon defining an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen.

Abstract: A device for introduction into a body vessel includes a main elongated element, a balloon positioned at the main elongated element distal end, a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use, and a longitudinally movable sheath positioned external to the main elongated element, a position of the sheath distal end with respect to the balloon defining an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen.

Abstract: A catheter system for treating lesions is provided. The system is suitable for treatment of bifurcation lesions, has a low profile and provides substantially predictable translational and rotational positioning. In one embodiment, the system includes a fixed wire balloon catheter and a partially attached guidewire lumen, wherein the guidewire lumen is attached to the catheter at a crotch point. The location of the crotch point is predetermined so as to provide substantially predictable positioning. Several embodiments of the system are described for various types of lesions and vessel configurations.

Abstract: Methods and apparatuses for embolizing an artery in a living subject using a catheter are disclosed. The catheter has a lumen and also has a balloon located near the distal end of the catheter. The distal end of the catheter is introduced into the artery, and the balloon is inflated to form a seal that prevents blood in the artery from flowing past the balloon. A mixture that includes embolic particles and contrast agent is injected through the lumen into the portion of the artery that is distally beyond the balloon. The subject's own blood or another fluid that contains platelets is injected through the lumen into the portion of the artery that is distally beyond the balloon. Subsequently, the balloon is deflated and the distal end of the catheter is withdrawn.

Abstract: A catheter system for treating lesions is provided. The system is suitable for treatment of bifurcation lesions, has a low profile and provides substantially predictable translational and rotational positioning. In one embodiment, the system includes a fixed wire balloon catheter and a partially attached guidewire lumen, wherein the guidewire lumen is attached to the catheter at a crotch point. The location of the crotch point is predetermined so as to provide substantially predictable positioning. Several embodiments of the system are described for various types of lesions and vessel configurations.

Abstract: A device for positioning a catheter at an ostium. The device includes an attachment mechanism for direct attachment to the catheter at a location proximal to a treatment device positioned on the catheter, the attachment mechanism having a proximal end, a distal end, and a longitudinal axis extending from the proximal end to the distal end. The device also including a stopper element extending from the distal end of the attachment mechanism and projecting away from the longitudinal axis, the stopper element being bendable in a direction toward the proximal end of the attachment mechanism.

Abstract: A catheter system for treating lesions is provided. The system is suitable for treatment of bifurcation lesions, has a low profile and provides substantially predictable translational and rotational positioning. In one embodiment, the system includes a fixed wire balloon catheter and a partially attached guidewire lumen, wherein the guidewire lumen is attached to the catheter at a crotch point. The location of the crotch point is predetermined so as to provide substantially predictable positioning. Several embodiments of the system are described for various types of lesions and vessel configurations.

Abstract: A catheter system for treating lesions is provided. The system is suitable for treatment of bifurcation lesions, has a low profile and provides substantially predictable translational and rotational positioning. In one embodiment, the system includes a fixed wire balloon catheter and a partially attached guidewire lumen, wherein the guidewire lumen is attached to the catheter at a crotch point. The location of the crotch point is predetermined so as to provide substantially predictable positioning. Several embodiments of the system are described for various types of lesions and vessel configurations.

Abstract: A device for positioning a catheter at an ostium. The device includes an attachment mechanism for direct attachment to the catheter at a location proximal to a treatment device positioned on the catheter, the attachment mechanism having a proximal end, a distal end, and a longitudinal axis extending from the proximal end to the distal end. The device also including a stopper element extending from the distal end of the attachment mechanism and projecting away from the longitudinal axis, the stopper element being bendable in a direction toward the proximal end of the attachment mechanism.

Abstract: A device for positioning a catheter at an ostium. The device includes an attachment mechanism for direct attachment to the catheter at a location proximal to a treatment device positioned on the catheter, the attachment mechanism having a proximal end, a distal end, and a longitudinal axis extending from the proximal end to the distal end. The device also including a stopper element extending from the distal end of the attachment mechanism and projecting away from the longitudinal axis, the stopper element being bendable in a direction toward the proximal end of the attachment mechanism.

Abstract: A device for introduction into a body vessel includes a main elongated element, a balloon positioned at the main elongated element distal end, a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use, and a longitudinally movable sheath positioned external to the main elongated element, a position of the sheath distal end with respect to the balloon defining an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen.

Abstract: A device for introduction into a body vessel includes a main elongated element, a balloon positioned at the main elongated element distal end, a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use, and a longitudinally movable sheath positioned external to the main elongated element, a position of the sheath distal end with respect to the balloon defining an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen.

Abstract: A device for introduction into a body vessel includes a main elongated element, a balloon positioned at the main elongated element distal end, a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use, and a longitudinally movable sheath positioned external to the main elongated element, a position of the sheath distal end with respect to the balloon defining an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen.

Abstract: A system and method for localized delivery of a therapeutic or diagnostic agent within a vessel is provided. The system and method provide for adjustability of the length of the treatment area and for reducing of pressure within the treatment area. A catheter system includes an inner elongated element, an outer elongated element positioned coaxially with respect to the inner elongated element, and a blood-release element at a distal end of the inner elongated element. A proximal occlusion element is positioned at the distal end of the outer elongated element, proximal to an outlet port. A distal occlusion element is positioned at a distal end of the inner elongated element. The distal end of the inner elongated element is distal to and movable with respect to the outer elongated element distal end.

Abstract: A device for introduction into a body vessel includes a main elongated element, a balloon positioned at the main elongated element distal end, a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use, and a longitudinally movable sheath positioned external to the main elongated element, a position of the sheath distal end with respect to the balloon defining an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen.

Abstract: Devices and methods for treating an aneurysm include a single unit having an access element and an occlusion element, the access element providing access to the aneurysm for introducing treatment objects such as coils therethrough while the occlusion element blocks the treatment objects from protruding into the vessel. The access element is an elongated element having an access lumen for direct introduction of coils or for introduction of coils via a microcatheter. The occlusion element is a balloon or an elongated element for introduction of blocking objects such as coils therethrough. In embodiments of the present invention, a distal end of the access element is preshaped at an angle to a longitudinal axis of the device, wherein upon introduction of the device into the vessel, the access element is aligned with the longitudinal axis and at placement of the device adjacent the aneurysm, the access element assumes its pre-shaped configuration.

Abstract: Devices and methods for treating an aneurysm include a single unit having an access element and an occlusion element, the access element providing access to the aneurysm for introducing treatment objects such as coils therethrough while the occlusion element blocks the treatment objects from protruding into the vessel. The access element is an elongated element having an access lumen for direct introduction of coils or for introduction of coils via a microcatheter. The occlusion element is a balloon or an elongated element for introduction of blocking objects such as coils therethrough. In embodiments of the present invention, a distal end of the access element is preshaped at an angle to a longitudinal axis of the device, wherein upon introduction of the device into the vessel, the access element is aligned with the longitudinal axis and at placement of the device adjacent the aneurysm, the access element assumes its pre-shaped configuration.