Patent ID: 8231584

Claim:
A fluid dispensing system containing a fixed, re-used part and a disposable set ( 5 ) connected to the fixed part for establishing a fluid connection between a fluid dispensing unit ( 17 ) and a dosing device which is adapted to dispense a fluid into a patient's vein, the disposable set consisting essentially of a length of a tubing ( 15 ) for establishing the fluid connection from the dispensing unit towards and into the dosing device, characterized that the tubing ( 15 ) consists essentially of a first ( 1 ) and a second ( 10 ) tubing part, wherein the first tubing part ( 1 ) comprises a first end connector ( 2 , 11 , 16 , 22 ) to establish at a first end part ( 4 ) a connection to a third end connector ( 12 , 13 ) at a second end part ( 9 ) of the second tubing part ( 10 ), and a second end connector ( 7 ) at a second end part ( 14 ) connected to the fixed part to establish a connection towards the fluid dispensing unit, wherein the second tubing part ( 10 ) comprises a fourth end connector ( 8 ) which is provided to establish at a first end part ( 6 ) of the second tubing part a connection towards the dosing device and a patient and a third end connector ( 12 , 13 ) at a second end part ( 9 ) of the second tubing part ( 10 ) to establish a connection to the first tubing part ( 1 ), wherein the first tubing part ( 1 ) comprises a one-way valve ( 3 ) which is provided to permit a fluid flow from the dispensing unit ( 17 , 18 ) towards the dosing device and to prevent a backward fluid flow from the dosing device towards the dispensing unit, wherein the first end part ( 4 ) of the first tubing part and the second end part ( 9 ) of the second tubing part ( 10 ) are in fluid connection with each other in a liquid tight manner by means of a releasable connection device ( 11 , 12 ), which a releasable connection thereof in the released position of the releasable connection is adapted to permit a back flow from the patient into the second tubing part ( 10 ) so as to allow a back flow of blood from the patient's vein into the second tubing part and a so-called reflux blood control of blood from the vein into the dosing device and part of the tubing to permit verification of whether the dosing device has been correctly inserted into the patient's vein and so as to prevent a back flow from the patient in a direction of the releasable connection device ( 11 , 12 ) in the closed position of the releasable connection so as to avoid contamination of the fixed, re-used part of the fluid dispensing system when dispensing the fluid to the patient.