Catheter assembly of the hypodermic embedment type

A catheter assembly of the hypodermic embedment type, which is used by being embedded in its entirety under the skin, the assembly comprising:

• a hypodermically embedable medicament infusion implement including a housing and at least one inlet port and at least one outlet port, said at least one inlet port and at least one outlet port being in communication with said housing;
• and
• a balloon catheter having distal and proximal ends, and having a balloon at said distal end thereof;
• said at least one outlet port of said medicament infusion implement connected to said proximal end of said catheter;
• said at least one inlet port has mounted therein a resilient member which allows insertion of a needle and which self closes off after withdrawal of the needle;
• said medicament infusion implement further including a first chamber for balloon inflation and a second chamber for medicament infusion defined in said housing, a first inlet port and a first outlet port in communication with said first chamber, and a second inlet port and a second outlet port in communication with said second chamber;
• said first and second inlet ports having at least one dimension which is different from each other;
• said balloon catheter including a tube body having a distal end, at least one expandable and contractible balloon disposed around the periphery of said tube body near said distal end of said tube body, a first lumen formed in said tube body in communication with said balloon, and a second lumen formed in said tube body and opening at a further distal end portion of said tube body beyond said balloon;
• and
• said first lumen having a proximal end connected to said first outlet port and said second lumen having a proximal end connected to said second outlet port.