Device for the connection of fluid conduits for medical purposes

A fluid conduit connecting device for medical purposes for connecting in the blood circuit of a patient, said connecting device comprising:

• a housing having an interior chamber;
• two coupling means extending outwardly from said housing for connecting to the blood circuit of a patent;
• a first connecting member insertable into said housing chamber;
• a protective member mounted on said first connecting member in relative movable relationship therewith;
• inward sealing surfaces on the inside of said housing between said first connecting member and said housing;
• first channels in said coupling means having inner end portions extending through said housing and said inner sealing surfaces for communication with the interior chamber of said housing;
• first and second openings in said first connecting member each having one end positionable for communicating respectively with one of said first channels of said two coupling means and another end opening outwardly of said first connecting member and said housing for connecting with an external circuit including equipment for blood treatment;
• at least one outward sealing surface on said first connecting member engageable in sealing relationship with said inward sealing surfaces on said housing in areas surrounding said one ends of said first and second openings and said inner end portions of said first channels;
• said movable protective member having at least one protective surface thereon in relative movable engagement with said at least one outward sealing surface on said first connecting member for protecting said at least one outward sealing surface from the external ambient environment when said first connecting member is not inserted into said housing, said protective member being insertable into said housing chamber when said first communicating member is inserted into said housing chamber for cooperative relationship between said inward sealing surfaces on said housing and said at least one outward sealing surface on said first connecting member for obtaining a leak proof connection between said first and second openings and said inner end portions of said first channels;
• and
• valve means movably mounted within said housing for adjustment therein between a first position for closing said first channels in said outward coupling means and a second position for opening said first channels in said outward coupling means, said valve means comprising a valve member having valve surfaces engageable with said inward sealing surfaces on said housing in said first position and disengageable from said inward sealing surfaces in said second position.