Roller pump

• US 8,734,138 B2
• Filed: 06/15/2010
• Issued: 05/27/2014
• Est. Priority Date: 05/14/2004
• Status: Active Grant

• Current Assignee: Fresenius Medical Care Deutschland GmbH (Fresenius Medical Care AG)
• Original Assignee: Fresenius Medical Care Deutschland GmbH (Fresenius Medical Care AG)
• Inventors: Baumann, Manfred, Breitkopf, Berthold, Huegel, Elmar, Neubauer, Herbert, Nuernberger, Thomas, Schneider, Jochen, Spengler, Gerhard, Wamsiedler, Ralf, Biesel, Wolfgang, Busse, Christian, Caronna, Marco, Jonas, Joerg, Reiter, Reinhold, Apel, Joern, Lauer, Martin
• Primary Examiner(s): Kramer, Devon
• Assistant Examiner(s): BOBISH, CHRISTOPHER S
• Application Number:
  US12/801,561
• Publication Number:
  US 20100329910A1
• Time in Patent Office: 1,442 Days
• Field of Search: 417474-476, 4174771-47714
• US Class Current: 417/477.2
• 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 relates to a roller pump consisting of a stator with a pump bed formed therein and a rotor for acting on a hose inserted into the pump bed in arcuate form. In accordance with the invention, the flow paths associated with the ends of the tube guided out of the pump bed cross.

Claims

1. A roller pump comprising:

a stator with a pump bed formed therein;

a pump bed hose, an inlet hose, and an outlet hose; and

a rotor for acting on the pump bed hose, said pump bed hose being inserted into the pump bed in arcuate form, having an inlet end and an outlet end, and being fixable in the roller pump by a connector to which the pump bed hose, the inlet hose, and the outlet hose are connected,

said connector being configured (i) as an integrated cassette having a pressure measuring element integrated in the cassette and (ii) such that a path of fluid flow within the connector associated with the inlet end of the pump bed hose and a path of fluid flow within the connector associated with the outlet end of the pump bed hose cross in the connector.

2. The roller pump in accordance with claim 1, wherein the connector is configured as an adapter.

3. The roller pump in accordance with claim 1, further comprising a housing for receiving the connector, the housing having a shape that corresponds to a shape of the connector, and having a first and a second clip receiver at each side thereof for clippably engaging the connector.

4. The roller pump in accordance with claim 3, wherein the first clip receiver is configured as a round arc and the second clip receiver is configured as an angled portion.

5. The roller pump in accordance with claim 3, wherein an upper end of each of the clip receivers has nose-like projections.

6. The roller pump in accordance with claim 1, further comprising in the housing a pin for ejection of the connector.

7. The roller pump in accordance with claim 1, further comprising a device arranged at the connector to cooperate with a sensor integrated in the roller pump.

8. The roller pump in accordance with claim 1, wherein the connector has a soft plastic construction.

9. The roller pump in accordance with claim 1, wherein the connector is arranged laterally at the pump bed with a horizontal alignment of an axle of the rotor.

10. The roller pump in accordance with claim 1, further comprising a control unit which sets a direction of rotation of the rotor clockwise with an opening of the pump bed on a left side and counterclockwise with an opening on a right side.

11. The roller pump in accordance with claim 1, wherein hose segments of different diameter can be inserted in the connector, with a transition region being arranged between the hose segments within the connector which provides a constant transition between two hose segments of different inner diameter.

12. The roller pump in accordance with claim 1, wherein the paths of fluid flow associated with each of the ends of the pump bed hose cross at right angles in the connector.

16. The roller pump according to claim 3, wherein the first and the second clip receivers are of different shapes.

17. The roller pump according to claim 7, wherein the device that cooperates with the sensor is a pimple.

18. The roller pump according to claim 8, wherein the plastic is PVC.

20. The roller bump according to claim 1, wherein the pressure measuring element is associated with at least one of the inlet hose and the outlet hose.

13. A connector for fixing a pump bed hose having an inlet end and an outlet end in a roller pump that includes an inlet hose and an outlet hose, and a stator with a pump bed formed therein and a rotor for acting on the pump bed hose inserted into the pump bed in arcuate form, said connector comprising:

an integrated cassette having a pressure measuring element integrated in the cassette, with the connector being configured such that a path of fluid flow within the cassette associated with the inlet end of the pump bed hose and a path of fluid flow within the cassette associated with the outlet end of the pump bed hose cross in the connector, and with the pump bed hose, the inlet hose, and the outlet hose being connected to the connector.

21. The connector according to claim 13, wherein the path of fluid flow in the connector associated with the inlet end of the hose is connectable to the inlet hose, and the path of fluid flow in the connector associated with the outlet end of the hose is connectable to the outlet hose.

22. The connector according to claim 21, wherein the pressure measuring element is associated with at least one of the inlet hose and the outlet hose.

14. A hose set for a roller pump that includes a stator with a pump bed formed therein and a rotor for acting on a pump bed hose inserted into the pump bed in arcuate form, said hose set comprising:

an inlet hose, an outlet hose, and the pump bed hose, said pump bed hose having an inlet end and an outlet end; and

a connector that is connectable to the inlet hose, the outlet hose, and the pump bed hose, and that fixes the pump bed hose in the roller pump, the connector being (i) configured as an integrated cassette having a pressure measuring element integrated in the cassette and (ii) configured such that a path of fluid flow within the cassette associated with the inlet end of the pump bed hose and a path of fluid flow within the cassette associated with the outlet end of the pump bed hose cross in the connector.

15. The hose set in accordance with claim 14, wherein the connector and the pump bed hose are connected to one another in, a firmly bonded manner.

19. The hose set according to claim 15, wherein the connector and the pump bed hose are adhesively bonded or welded.

23. The hose set according to claim 14, wherein the inlet hose is connectable to the path of fluid flow in the connector associated with the inlet end of the pump bed hose, and the outlet hose is connectable to the path of fluid flow in the connector associated with the outlet end of the pump bed hose.

24. The hose set according to claim 14, wherein the pump bed hose, the inlet hose, and the outlet hose are adhesively bonded or welded to the connector.

25. The hose set according to claim 14, wherein the pressure measuring element is associated with at least one of the inlet hose and the outlet hose.