CONTRAST FLUID DELIVERY SYSTEM

• US 20080086094A1
• Filed: 11/26/2007
• Published: 04/10/2008
• Est. Priority Date: 05/26/2005
• Status: Active Grant

• Current Assignee: Jean-Pierre Peters
• Original Assignee: Jean-Pierre Peters
• Inventors: PETERS, Jean-Pierre
• Granted Patent: US 8,231,584 B2
• Time in Patent Office: Days
• US Class Current: 604/246
• CPC Class Codes: A61M 39/10 Tube connectors; Tube couplings A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014
• CPC Class Codes: A61M 39/26 Valves closing automatically on disconnecting the line and opening on reconnection thereof check valves A61M39/24
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: A61M 5/24 Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic ampoules or carpules A61J1/06
• CPC Class Codes: Y10S 604/905 Aseptic connectors or couplings, e.g. frangible, piercable

Abstract

The present invention relates to 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 comprises a length of a tubing (15) for establishing a fluid connection from the 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) is provided to establish a connection to the second tubing part (10) and to the fluid dispensing unit. The second tubing part (10) is provided to establish a connection towards the dosing device and the patient and to the first tubing part (1). The first tubing part (1) comprises a one-way valve (3) which permits a fluid flow from the dispensing unit (17, 18) towards the dosing device and the patient and to prevent a backward fluid flow from the dosing device towards the dispensing unit. The first and second tubing part are in fluid connection with each other in a liquid tight manner by means of a releasable connection device (11, 12), which is adapted to permit a back flow from the patient in the direction of the releasable connection device in the released position of the releasable connection and to prevent a back flow from the patient in the direction of the releasable connection device (11, 12) in the closed position of the releasable connection.

Claims

1. A disposable set (5) for establishing a fluid connection between a fluid dispensing unit (17) and a dosing device which is adapted to dispense the fluid into a patients'"'"' vein, the disposable set consisting essentially of a length of a tubing (15) for establishing a 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) 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 the 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 releasable connection in the released position of the releasable connection is adapted to permit a back flow from the patient into the second tubing part (10) and to prevent a back flow from the patient in the direction of the releasable connection device (11, 12) in the closed position of the releasable connection.

2. A disposable set as claimed in claim 1, characterised in that the releasable connection device comprises a first (11) and a second connector part (12), in that the second connector part (12) is fastened to a second end part (9) of the second tubing part (10) and in that the first connector part (11) is mounted to an outlet side (2) of the one-way valve (3) along which the fluid flows from the one way valve in the direction of the second tubing part (10).

3. A disposable set as claimed in claim 2, characterised in that the first connector part (11) is positioned on an end part of the one-way valve on a side of the one way valve that points towards the second tubing part (10).

4. A disposable set as claimed in claim 1, characterised in that the releasable connection device (11, 12) is a luer connector.

5. A disposable set as claimed in claim 2, characterised in that the first connector part (11) comprises a first luer lock flange which is adapted to be at least partly received within in a corresponding duct (13) of the second connector part (12) in a liquid tight manner, to establish the fluid connection between the first and the second connector part.

6. A disposable set as claimed in claim 5, characterised in that the liquid tight connection of the first and second connector part (11, 12) is achieved by means of a bayonet coupling or a threaded connection on an outer wall of the duct (13) and an inner face of a circumferential wall (16) surrounding the first luer lock flange.

7. A disposable set as claimed in claim 1, characterised in that the second tubing part (10) has a length which is longer as compared to a length of the first tubing part (1).

8. A disposable set as claimed in claim 1, characterised in that the tubing (1, 10) has a reduced diameter.

9. A disposable set as claimed in claim 1, characterised in that the dosing device is a injection needle.

10. A fluid dispensing system containing the disposable set as claimed in claim 1.

11. A method for verifying blood back flow from a patient towards a fluid dispensing reservoir using the disposable set of claim 1, characterized in that the dosing device is inserted into the patients'"'"' vein, in that the dosing device is connected to the second tubing part (10) at the second end part (6), in that the releasable connection (11, 12) is opened to permit a back flow from the patients'"'"' vein into the second tubing part (10), in that the releasable connection is re-connected after the back flow of blood into the second tubing part has occurred and has been observed.

12. Use of the disposable set of claim 1, for dispensing a fluid into a vein of a patient.

13. Use of the disposable set of claim 1, for dispensing a fluid to a patient.