DIRECTIONAL SHEATH AND RELATED METHOD OF USE

摘要

A directional sheath for use in angiography, thrombectomy and/or chemotherapy procedures. The sheath includes a distal end and proximal end, defines aperture(s) between the ends, and includes an occlusion balloon adjacent the distal end. An inflation lumen is in fluid communication with the balloon, so the balloon can be inflated to occlude a blood vessel. The sheath can include a dilator. In one method, the sheath is inserted in a blood vessel, and the balloon is inflated to occlude it. A substance is introduced through the sheath, while the distal end remains occluded by a dilator distal end. The substance passes a dilator intermediate portion and exits the sheath through the apertures, whereby the substance is introduced retrograde in the blood vessel. In another method, the sheath is introduced into a vessel having a thrombus, the balloon is inflated to occlude it, and the thrombus is pulled into the sheath.

主权项

1. A method of performing an angiography procedure comprising:
providing an introducer sheath including a sheath distal end and a sheath proximal end, the introducer sheath defining an internal sheath lumen bounded by an exterior sheath wall, the exterior sheath wall including a sheath exterior surface and a sheath interior surface, the internal sheath lumen being in fluid communication with a contrast fluid port adjacent the proximal end, the exterior sheath wall defining a plurality of apertures, the introducer sheath including an occlusion balloon located adjacent the sheath distal end; providing a dilator including a dilator distal end and a dilator proximal end, with a dilator intermediate portion located therebetween, the dilator distal end having a first dimension, the dilator intermediate portion having a second dimension, less than the first dimension, the dilator being located within the internal sheath lumen so that the dilator distal end occludes the internal sheath lumen; inserting the sheath distal end into a blood vessel of a subject; inflating the occlusion balloon so that the balloon occludes the blood vessel; and introducing an angiography dye through the contrast fluid port so the contrast dye flows into the internal sheath lumen, between the dilator intermediate portion and the sheath interior surface; wherein the angiography dye exits the introducer sheath through the plurality of apertures so that the angiography dye is introduced retrograde in the blood vessel.