Patent ID: 6971390

Claim:
A catheter connection system for effecting a fluid-tight coupling and a mechanical joinder between a medical device that accommodates fluid flow therethrough and an end of a catheter having an outer wall with an exterior surface and an interior surface, the interior surface of the outer wall of the catheter defining a longitudinally extending fluid flow lumen therein, said connection system being capable of being manipulated by a user into an assembled condition, said connection system comprising: a coupling hub including a catheter connection stem attached at the proximal end thereof to the medical device and having a distal end remote therefrom configured to be receivable in an end of the lumen of the catheter, said connection stem enclosing a fluid passageway extending between a proximal end and a distal end of the connection stem, said fluid passageway communicating with the medical device at said proximal end of said connection stem; an enlargement formed on an exterior of the connection stem, the enlargement extending between a distal end and a proximal end thereof and terminating at the proximal end in a barrier wall encircling the connection stem; a catheter securement collar having an internal bore sized to receive said connection stem and to advance proximally relative to the exterior of the connection stem via coupling to the coupling hub into said assembled condition of said connection system; and a catheter locking ring formed on the internal bore of the securement collar at the distal end thereof, wherein a distal end of the locking ring in the assembled condition of the connection system is positioned proximal to the barrier wall of the connection stem.