Patent ID: 7597688
Filing Date: 2009-10-06
Classification: A61B

Abstract:
1. A cannula comprising: a tubular body having a proximal end and a distal end with a longitudinal channel extending therebetween, said tubular body having a first branch tube extending outwardly therefrom, said tubular body having a second branch tube extending outwardly therefrom, said tubular body having a threaded section adjacent said proximal end; an inflatable ring affixed within said tubular body adjacent said proximal end, said tubular body having a channel extending so as to be in fluid communication with said inflatable ring; a first valving means connected to said channel, said first valving means for allowing a liquid to be selectively passed into and from said inflatable ring, said inflatable ring being expandable into said longitudinal channel when the liquid is introduced thereinto; a second valving means cooperative with said second branch tube, said second valving means for allowing a vacuum to be passed through said second branch tube and into said longitudinal channel of said tubular body; and a cap threadedly engaged with said threaded section, said cap retaining said inflatable ring within said tubular body.