Double lumen catheter tip

Claim 1

A double lumen catheter comprising: a flexible, open-ended, multichannel tube having a fluid intake lumen and fluid return lumen of equal cross-sectional area separated by means of an internal divider, said tube having a plurality of apertures positioned rearward of the distal end and opening into said intake lumen, said apertures communicating with or among one another to prevent the accumulation of fibrin or other matter within the channel, and a pair of spaced apertures opening into said fluid return lumen positioned rearward of the distal end and communicating with the fluid return lumen, said apertures communicating with or among one another to prevent the accumulation of fibrin or other matter within the channel as fluid exits from the channel through said apertures; and a preformed tip having a beveled distal end and stepped proximal end, said proximal end having a first portion adaptable for insertion into and in sealing relationship with the fluid intake lumen and terminating just forward of the apertures opening into the fluid intake lumen, said first portion having a beveled end to prevent the occlusion of fluid entering the fluid intake lumen, and a second portion adaptable for insertion into and in sealing relationship with the fluid return lumen and terminating just forward of the apertures opening into the fluid return lumen, said second portion having an open-ended channel communicating with the fluid return lumen to allow for the flow of fluid outwardly from said fluid return lumen.