Urinary catheter and system

A urinary catheter arrangement, comprising:

• a catheter including a distal end, a proximal end, and inner and outer surfaces, said catheter including a continuous layer of a first metal extending over at least one of said inner and outer surfaces, said continuous layer of first metal extending from a point on said catheter to said distal end, said laxer of first metal underlying a discontinuous layer of a second, dissimilar metal to thereby define contiguous exposed patches of said first and second dissimilar metals;
• a flow restriction device including an input port and an output port, the exposed interior surfaces of which flow restriction device include an oligodynamic metal;
• a container including at least an input port, the exposed interior surfaces of which container include an oligodynamic metal;
• first flow coupling means coupled to said proximal end of said catheter and to said input port of said flow restriction device for allowing flow therebetween, said first flow coupling means including exposed interior surfaces of oligodynamic metal;
• and
• second flow coupling means coupled to said output port of said flow restriction device and to said input port of said container for allowing flow therebetween, said second flow coupling means including exposed interior surfaces of oligodynamic metal.