Device and method for controlling injection of liquid embolic composition

摘要

A liquid embolic delivery system is provided for trapping an injected liquid embolic composition to prevent the liquid embolic from solidifying or otherwise passing outside of an embolization area. The delivery system includes a catheter for delivery of a liquid embolic composition and a containment member positioned at a distal end of the catheter which is shaped to trap the liquid embolic composition delivered through the lumen of the catheter. The containment member is formed as a brush, nest, sponge, swab, flexible sack, or other shape into and around which the liquid embolic composition is injected. The liquid embolic composition is trapped or meshes with the containment member during solidification containing the liquid embolic and preventing the embolic composition from passing into the blood stream.

主权项

1. A system comprising:
an inner catheter defining an inner catheter lumen; an outer catheter defining an outer catheter lumen and a plurality of side ports, wherein the outer catheter surrounds the inner catheter, a distal end of the outer catheter forming a fluid tight seal with an exterior surface of the inner catheter when a distal end of the inner catheter extends past the distal end of the outer catheter, wherein the inner catheter is slideable with respect to the outer catheter to adjust a distance between the distal end of the inner catheter and the side ports; a liquid embolic composition source fluidically connected to the inner catheter lumen; and a disruption fluid source fluidically connected to the outer catheter lumen, the disruption fluid comprising saline, a contrast medium, or a mixture of saline and the contrast medium.