System for performing fluid administration

• US 7,497,840 B2
• Filed: 08/02/2004
• Issued: 03/03/2009
• Est. Priority Date: 07/31/2003
• Status: Active Grant

• Current Assignee: Debiotech S.A.
• Original Assignee: Debiotech S.A.
• Inventors: Junod, Florent, Vecten, Didier, Neftel, Frederic
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): Bouchelle; Laura A
• Application Number:
  US10/565,782
• Publication Number:
  US 20060189923A1
• Time in Patent Office: 1,674 Days
• Field of Search: 604/151, 604/39, 604/40, 604/19, 604/21, 604/28, 604/29, 417/477.1, 417474-476, 417/247, 417/346
• US Class Current: 604/29
• CPC Class Codes: A61M 1/1524 the interface providing means for actuating on functional elements of the cassette, e.g. plungers
• CPC Class Codes: A61M 1/154 with sensing means or components thereof
• CPC Class Codes: A61M 1/155 with treatment-fluid pumping means or components thereof
• CPC Class Codes: A61M 1/1561 at least one cassette surface or portion thereof being flexible, e.g. the cassette having a rigid base portion with preformed channels and being covered with a foil
• CPC Class Codes: A61M 1/1565 Details of valves
• CPC Class Codes: A61M 1/159 specially adapted for peritoneal dialysis
• CPC Class Codes: A61M 1/28 Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
• CPC Class Codes: A61M 2205/128 with incorporated valves
• CPC Class Codes: A61M 5/44 having means for cooling or heating the devices or media
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Abstract

The invention concerns a system and a method of use of said system for performing fluid administration on a patient, the system comprising:

• • a liquid pump (1),
  • a liquid distribution system (2) connected to said pump (1) in such a way that liquid can flow from the liquid distribution system (2) to the pump (1) and vice versa,
  • liquid supply means (3) for supplying liquid to a patient (4) via said liquid distribution system (2) and said pump (1),
  • a patient conduit (5) adapted for connecting said liquid distribution system (2) to a patient (4),
    the system being characterized by the fact that said liquid pump (1) is unidirectional and that said liquid distribution system (2) comprises switching means designed to alternatively connect the pump enter line (56) with the supply means (3) or with the patient conduit (5).

Claims

1. A system for performing fluid administration on a patient comprising:

a single liquid pump,

a liquid distribution system connected to said pump in such a way that liquid can flow from the liquid distribution system to the pump via a pump enter line and vice versa via a pump exit line,

liquid supply means for supplying liquid to a patient via said liquid distribution system and said pump,

a patient conduit adapted for connecting said liquid distribution system to a patient,

a drain collector,

wherein said liquid pump is unidirectional and said liquid distribution system comprises switching means comprising valves designed to alternatively connect the pump enter line with the supply means or with the patient conduit, said system further comprising two distinct lines, namely;

a first line including successively said liquid supply means, said liquid distribution system, said liquid pump, said liquid distribution system and said patient conduit, and

a second line including successively said patient conduit, said liquid distribution system, said liquid pump, said liquid distribution system and said drain collector.

2. A system according to claim 1 wherein the liquid pump is a peristaltic pump.

3. A system according to claim 2 wherein the peristaltic pump is rotatable.

4. A system according to claim 1 wherein said liquid distribution system comprises two distinct hub chambers, the first hub chamber including at least one liquid supply port with dedicated valve means, one patient port with dedicated valve means and one pump inlet, the second hub chamber including at least, one patient port or warmer port with dedicated valve means and one pump outlet, said system further comprising control means arranged to close said patient port of the first hub chamber when said liquid supply port is open and vice versa.

5. A system according to claim 4 wherein said second hub chamber further includes at least one drain port with dedicated valve means, said control means being also arranged to close said patient port of the second hub chamber when said drain port is open and vice versa.

6. A system according to claim 5 wherein said liquid distribution system only includes two hub chambers.

7. A system according to claim 1 further comprising a warmer system, a cavity including a warmer port and a patient port, said patient port of the second hub chamber being connected to said warmer port via said warmer system.

8. A system according to claim 4 wherein said first hub chamber includes several liquid supply ports with respective valve means.

9. A system according to claim 8 wherein said liquid supply ports are connected to respective liquid supply means having each a different kind of liquid.

10. A system according to claim 1 wherein said liquid pump is composed of a tubing and rolling surface on which the tubing is compressed once the cartridge is inserted into a pumping device containing rollers.

11. A system according to claim 1 wherein said liquid pump and said liquid distribution system are fixed together to form a single cartridge.

12. A system according to claim 11 wherein said liquid pump is fixed to said liquid distribution system by vibration attenuation means in order to minimize the vibration on the liquid distribution system when the pump is operating.

13. A system according to claim 1 wherein all hub chambers, including ports, are made within one single part.

14. A system according to claim 13 wherein said single part is an injected part of plastic material.

15. A system according to claim 1 wherein each hub chamber is closed with an upper wall made of a flexible membrane, said membrane including valve elements situated above each of said port or port with valve means, said valve elements being designed to close said port or port when the membrane moves downwardly.

16. A system according to claim 1 wherein said liquid distribution system includes liquid tight joints arranged in such a manner that they allow a liquid tight connection between said liquid distribution system and a membrane situated on it.

17. A system according to claim 1 wherein said liquid distribution system includes an air sensor situated on the patient conduit side.

18. A system according to claim 1 comprising a cartridge loading mechanism which allows a tight connection between the membrane and the valves and the liquid distribution system.

19. A liquid distribution system for a system performing fluid administration on a patient as defined in any one of the previous claims.

20. A pressure sensor for a system for performing fluid administration on a patient as defined in claim 1.

21. A system according to claim 1 further comprising a window for detecting correct positioning of a pump flexible tube.