Connection for catheters, perfusion units and flasks of liquid to be perfused

Claim 1

Connection means for connecting catheter units to perfusion units or perfusion units to container units containing liquids to be perfused, especially liquids used for parenteral administration, comprising: wall means defining a chamber containing an antimicrobial product adapted to be connected between two of said units, i.e. between the outlet of the container and a perfusion unit or between the latter and the inlet of a catheter, said wall means having opposed portions sealingly penetrable by a hollow needle, said wall means being attached to one of said two units with one of said wall portions being exposed to the interior of said one unit; rigid coupling means detachably connectable to said wall means and extending over the other of said wall portions, said coupling means being adapted to be connected to the other of said two units; and means defining a flow path through said coupling means for flow of liquid between said two units, said path including a hollow needle having its base secured to said coupling means, the length of said needle being greater than the distance between the outer sides of said opposed wall portions, and said needle being positioned to penetrate both of said wall portions when said coupling means is connected to said wall means.