Syringe device for simultaneous infusion and withdrawal

An apparatus comprising:

• a syringe including
• a cylindrical barrel;
• a plunger including a shaft and a plunger head disposed within said cylindrical barrel to reciprocate longitudinally within said cylindrical barrel, said plunger head providing a seal between an actuation end of said cylindrical barrel and an administering end of said cylindrical barrel;
• a first hollow needle;
• a first chamber defined by said cylindrical barrel, said plunger head, and said first hollow needle sealed to said administering end of said cylindrical barrel, said first hollow needle providing a fluid communication between said first chamber and an environment outside of said first chamber;
• a second chamber defined by said cylindrical barrel, said plunger head, and a shaft seal sealed to said plunger shaft and to said actuation end of said cylindrical barrel;
• a second hollow needle, wherein said first and second hollow needles are disposed to be substantially parallel to each other and wherein said needles are arranged to perforate in the same direction;
• a receiving container defining a receiving chamber, said receiving container sealed to said syringe and to said second hollow needle so that said receiving chamber is in fluid communication with said second chamber of said syringe and said second hollow needle provides fluid communication between said receiving chamber and an environment outside of said receiving chamber, wherein said receiving container includes a second cylindrical barrel disposed to be substantially parallel to and exteriorly adjacent of said cylindrical barrel of said syringe.