Abstract: An embolization microcatheter for embolization of peripheral arteries including an elongated tubular member comprising a distal end having a length of 150-500 mm and an outer diameter of less than 0.8 mm, wherein the elongated tubular member comprises a multiplicity sections, each having a length of 5 mm -150 mm, wherein a wall of each of the multiplicity of sections comprises a braid, a polymer formed around the braid and an inner liner coating an inner surface thereof; wherein the polymer of the multiplicity sections differ; and a distal tip having a length of 1 mm - 3 mm and extending between a proximal end of a first radiopaque marker of the elongated tubular member and a distal end opening of the elongated tubular member; the wall of the distal tip is devoid of braid.

Abstract: An embolization microcatheter with a wall including a braid, a polymer formed around the braid and an inner liner coating an inner surface of the wall, a radiopaque marker located in proximity to the distal end opening; wherein the part of the microcatheter extending between the proximal end of the radiopaque marker and the distal end opening is devoid of the liner and wherein the wall has a thickness of about 120 microns or less.

Abstract: An embolization microcatheter is configured to deliver embolization particles to a target area and minimize or prevent embolization of a non-target area. The microcatheter includes a section, located between the distal and proximal ends of the microcatheter, having a skeleton formed of braided wires and a polymeric layer intercalated into and/or overlaying the skeleton. This section includes a plurality of axial slits, each slit having a smallest cross-sectional dimension configured to prevent outflow of the embolization particles.

Abstract: An embolization microcatheter for delivery of embolization beads to a target area, the microcatheter including a proximal end and a distal end, the distal end terminating in an end opening sized and shaped to allow delivery of a suspension of embolization beads, and a filter section located between in proximity to the distal end opening; the filter section including a large plurality of openings distributed circumferentially around a wall thereof, the filter section configured to allow outflow of the suspension fluid while preventing outflow of the embolization beads.

Abstract: An embolization microcatheter is configured to deliver embolization particles to a target area and minimize or prevent embolization of a non-target area. The microcatheter includes a section, located between the distal and proximal ends of the microcatheter, having a skeleton formed of braided wires and a polymeric layer intercalated into and/or overlaying the skeleton. This section includes a plurality of axial slits, each slit having a smallest cross-sectional dimension configured to prevent outflow of the embolization particles.