Pump with crossing lines

• US 9,046,095 B2
• Filed: 06/16/2010
• Issued: 06/02/2015
• 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): BOBISH, CHRISTOPHER S
• Application Number:
  US12/801,590
• Publication Number:
  US 20110150668A1
• Time in Patent Office: 1,812 Days
• Field of Search: 417474-476, 4174771-47714
• US Class Current: 1/1
• 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

A roller pump includes a stator with a pump bed formed therein, and a rotor for acting on a hose inserted into the pump bed in arcuate form. The ends of the hose are guided out of the pump bed in a crossed configuration.

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;

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 connectable, the connector being arranged laterally at the pump bed with a horizontal alignment of a rotor axle, and being configured 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; and

a control unit which sets a direction of rotation of the rotor, said control unit setting the direction of rotor rotation to be clockwise for a configuration in which an opening of the pump bed is on a left hand side, and setting the direction of rotor rotation to be counterclockwise for a configuration in which the opening of the pump bed is on a right hand side.

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 3, 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 configured as an integrated cassette.

10. The roller pump in accordance with claim 1, wherein the pump bed hose has a different inner diameter than the inlet hose and the outlet hose, the path of fluid flow within the connector associated with the inlet end of the pump bed hose having a transition region providing a constant transition between the different inner diameters of the pump bed hose and the inlet hose, and the path of fluid flow within the connector associated with the outlet end of the pump bed hose having a transition region providing a constant transition between the different inner diameters of the pump bed hose and the outlet hose.

11. The roller pump in accordance with claim 1, wherein the path of fluid flow within the connector associated with the inlet end of the pump bed hose and the path of fluid flow within the connector associated with the outlet end of the pump bed hose cross at right angles in the connector.

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

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

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

17. The roller pump according to claim 1, wherein the inlet end of the pump bed hose is located above the outlet end of the pump bed hose when the pump bed hose is connected to the pump bed via the connector.

12. A method of operating a roller pump that includes 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 connectable, the connector being arranged laterally at the pump bed with a horizontal alignment of a rotor axle, and being configured 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, the method comprising:

rotating the rotor in a clockwise direction for a configuration in which an opening of the pump bed is on a left hand side, and rotating the rotor in a counterclockwise direction for a configuration in which the opening of the pump bed is on a right hand side.

13. The method according to claim 12, wherein the roller pump includes

a control unit which sets the direction of rotation of the rotor, and further comprising a step of said control unit setting the direction of rotor rotation to be clockwise for the configuration in which the opening of the pump bed is on the left hand side, and setting the direction of rotor rotation to be counterclockwise for the configuration in which the opening of the pump bed is on the right hand side.

18. The method according to claim 12, wherein the inlet end of the pump bed hose is located above the outlet end of the pump bed hose during operation of the pump when the pump bed hose is connected to the pump bed via the connector.