Patent ID: 7914497

Claim:
A catheter comprising: a) a catheter tube having a proximal end and a distal end, said tube having a fluid passage lumen therein extending to a port in said distal end; b) a retention bolster comprising an annular balloon mounted on said tube adjacent said distal end and normally extending radially outwardly from said tube, said radially extending balloon normally being inflated by air trapped therein; and c) a bolus mounted on said distal end of said tube, said bolus being fastened to said tube adjacent said port and cantilevered to one side of said tube and the axis of the distal end port, said bolus normally extending substantially parallel to said retention bolster and, when relaxed, being spaced from said retention bolster and movable independently of said bolster, said bolus also including a tip extending radially to one side of said tube and a resiliently flexible arm connecting said tip to said tube; d) said bolus tip having an external nose and containing a socket opposite said nose for receiving a stylet.