Abstract: Syringe systems for mixing and delivery of particles into the body are disclosed. In some embodiments, a mixing and delivery medical syringe system can include a barrel including first and second detachable sections, and first and second compartments communicable through a conduit.

Abstract: A composition includes a plurality of particles. At least some of the plurality of particles include cross-linked polyvinyl alcohol and have a diameter of about 500 microns or less. The particles have a first average pore size in an interior region, and a second average pore size at a surface region. The first average pore size being greater than the second average pore size. The composition also includes a carrier fluid. The plurality of particles being in the carrier fluid.

Abstract: Embolization, as well as related particles, compositions, and methods, are disclosed.

Abstract: Embolization, as well as related particles, compositions, and methods, are disclosed.

Abstract: Particles and related methods are disclosed. In some embodiments, a method of making particles can include forming a stream of a mixture including first and second materials, exposing the stream to a vibration, and treating the stream to form particles. The vibration can have, for example, a sinusoidal, triangular, and/or sawtooth waveform.

Abstract: Embolization, as well as related particles and methods, are described.

Abstract: Embolization, as well as related particles and methods, are described.

Abstract: A method of treating tissue includes placing substantially spherical polymer particles in the tissue. The particles include an interior region having relatively large pores and a first region substantially surrounding the interior having fewer relatively large pores than the interior region.

Abstract: Embolic compositions and methods of delivering the compositions are disclosed. In some embodiments, an embolic composition includes a first collection of particles having a first shape, and a second collection of particles having a second shape different than the first shape.

Abstract: An endoluminal self-expanding prosthesis for placement in a blood vessel, duct or lumen, to hold it open. The prosthesis includes a stent with a graft extending within the stent. The stent is an elongated self-expanding stent with an open tubular wall structure. The graft is an elongated compressible generally tubular graft. One end of the graft is secured to the inside of the stent and the graft extends therethrough. The stent is deployed allowing the free flow of blood through the open-celled structure, and the graft is freely deployed secondarily within the stent by the blood flowing therethrough. The present invention is not subject to significant distal migration during delivery and placement of the prosthesis.

Abstract: A magnetically steerable catheter system and method of using the system is provided. The system comprises an outer elongated, flexible member having a proximal and distal end, an inner elongated, flexible, member having a proximal end and a distal end, the inner member slidably disposed within the outer member. The system further comprises an electromagnet disposed on the distal end of one of the outer member and inner member, and a magnetically attractive element disposed on the distal end of another of the outer member and inner member. The magnetically attractive element is configured for magnetically interacting with the electromagnet to deflect the distal end of the inner member.

Abstract: Embolic particles, as well as their methods of use and manufacture, are described.

Abstract: Embolic particles, as well as their methods of use and manufacture, are described.

Abstract: A valve may include (a) a housing defining a valve lumen adapted for fluid connection with a lumen of a catheter; (b) a substantially conical valve member coupled to the housing and extending across the valve lumen to control flow therethrough; (c) a plurality of slits extending through the valve member and separated from one another circumferentially around the valve member; and (d) a ramp formed within a distal end of the valve lumen extending proximally from a distal tip of the valve member toward a ramp vertex separated from the distal tip by a predetermined distance.

Abstract: Embolization, as well as related particles and methods, are described.

Abstract: A method of treating tissue includes placing substantially spherical polymer particles in the tissue. The particles include an interior region having relatively large pores and a first region substantially surrounding the interior having fewer relatively large pores than the interior region.

Abstract: A particle includes a ferromagnetic material, a radiopaque material, and/or an MRI-visible material.

Abstract: Embolic particles, as well as their methods of use and manufacture, are described.

Abstract: Syringe systems for mixing and delivery of particles into the body.

Abstract: Embolic compositions and methods of delivering the compositions are disclosed. In some embodiments, an embolic composition includes a first collection of particles having a first shape, and a second collection of particles having a second shape different than the first shape.