Patent ID: 8939946
Filing Date: 2015-01-27
Classification: A61B,A61J,A61M

Abstract:
1. A cannula assembly, comprising: a cannula including a substantially longitudinal tube having a proximal end, a distal end, an outer surface, an inner surface defining a lumen extending between the proximal end and the distal end, an annular groove on the outer surface of the cannula adjacent the distal end of the cannula, and a fluid conduit formed in the outer surface of the cannula, the fluid conduit extending longitudinally along the length of the cannula distally to a point proximal to the annular groove near the distal end of the cannula; a sleeve including a substantially longitudinal tube having a proximal end, a distal end, a lumen extending between the proximal end and the distal end, the lumen of the sleeve being configured to accept the cannula, the proximal end of the sleeve sealingly engaging the outer surface of the cannula adjacent the proximal end of the cannula, and the distal end of the sleeve positioned proximal the annular groove of the cannula; and a balloon extending from the distal end of the sleeve distally to cover the annular groove on the outer surface of the cannula, the balloon fixed in place to the annular groove, and the balloon comprised of a material that has a non-inflated configuration in which the balloon is folded onto the cannula and the sleeve and an inflated configuration having a relatively large profile.