| 摘要 |
A disposable set (5) for establishing a fluid connection between a fluid dispensing unit (17) and a dosing device adapted to dispense the fluid into a patients' vein, the disposable set comprising a length of a tubing (15) for establishing a fluid connection from the fluid dispensing unit towards and into the dosing device, wherein the tubing (15) comprises a first (1) and a second (10) tubing part, and a releasable connection (11,12), wherein the first tubing part (1) comprises two or more one-way valves (3, 24) which are provided to prevent a backflow from the patient in the direction of the fluid dispensing unit (17) in the closed position of the releasable connection. |
| 主权项 |
1. A disposable set (5) for establishing a fluid connection between a fluid dispensing unit (17) and a dosing device adapted to dispense a fluid into a patient's vein, the disposable set comprising a length of a tubing (15) for establishing the fluid connection from the fluid dispensing unit towards and into the dosing device, wherein the tubing (15) comprises a first (1) and a second (10) tubing part, the first tubing part (1) being provided to establish at a first end part (4) a connection to a second end part (9) of the second tubing part (10), and at a second end part (14) a connection towards the fluid dispensing unit, the second tubing part (10) being provided to establish at a first end part (6) a connection towards the dosing device and the patient and at a second end part (9) a connection to the first tubing part (1), wherein the first tubing part (1) comprises a first 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 fluid 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), of which a releasable connection is adapted to permit a backflow from the patient into the second tubing part (10) in a direction of the releasable connection device in a released position of the releasable connection and to prevent a backflow from the patient in the direction of the releasable connection device (11, 12) in a closed position of the releasable connection, characterized in that the first tubing part comprises one or more second one-way valves (24) which are provided to permit a fluid flow from the second end (14) of the first tubing part (1) towards the first end (4) of the first tubing part (1) and to prevent a backward fluid flow from the first end (4) of the first tubing part (1) towards the second end (14) of the first tubing part (1);
wherein the second end (14) of the first tubing part (1) comprises a connector (7) to connect the dosing device to a manifold (20), which intervenes in dosing the fluid contained in the fluid dispensing unit (17) and wherein said one or more second one-way valves (24) are arranged at a distance of 3 cm or more from the first one-way valve (3). |
