Roller pump

• US 7,758,324 B2
• Filed: 05/12/2005
• Issued: 07/20/2010
• 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: Schneider, Jochen, Apel, Joern, Caronna, Marco, Wamsiedler, Ralf, Neubauer, Herbert, Breitkopf, Berthold, Lauer, Martin, Spengler, Gerhard, Biesel, Wolfgang, Jonas, Joerg, Busse, Christian, Reiter, Reinhold, Nuernberger, Thomas, Baumann, Manfred, Huegel, Elmar
• Primary Examiner(s): Kramer; Devon
• Assistant Examiner(s): BOBISH, CHRISTOPHER S
• Application Number:
  US11/596,353
• Publication Number:
  US 20070286756A1
• Time in Patent Office: 1,895 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

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, a pump bed formed in the stator, and a rotor for acting on a hose inserted into the pump bed in arcuate form;

an insertable and ejectable connector that fixes the hose in the pump, the connector having a rounded recess on a first side thereof and an angled recess on a second side thereof; and

a housing for receiving the connector, the housing having a shape that corresponds to a shape of the connector such that the connector is receivable in the housing, and having a first and a second clip receiver attached to opposed sides of the housing, each of the first and second clip receivers being configured to releasably engage the connector,

the first clip receiver having a rounded portion configured to receive the rounded recess of the connector, and

the second clip receiver having an angled portion configured to receive the angled recess of the connector.

2. The roller pump in accordance with claim 1, wherein ends of the hose that extend out of the pump bed cross each other.

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

4. The roller pump in accordance with claim 1, wherein a hose piece that is insertable into the pump bed, an infeeding hose, and an outgoing hose are connected to the connector.

5. The roller pump in accordance with claim 1, 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 that cooperates 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 9, 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 the connector is configured as an integrated cassette.

12. 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 connectors of different inner diameter.

13. The roller pump in accordance with claim 1, wherein segments of the hose cross at right angles in the connector.

14. An assembly comprising a connector and a roller pump in accordance with claim 1, the connector fixing the hose in the pump and having a shape that matingly corresponds to a shape of the first clip receiver and a shape of the second clip receiver.

15. A hose set comprising a connector in accordance with claim 14 and hose segments that are insertable into the pump bed and connected to the connector.

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

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

18. The hose set according to claim 16, wherein the connector and the hose segments are adhesively bonded or welded.

19. A roller pump comprising:

a stator, a pump bed provided in the stator, and a rotor for acting on a hose inserted into the pump bed in arcuate form;

an insertable and ejectable connector that secures the hose in the pump, the connector (i) being configured such that a transition region extending from an inlet portion of the hose and an outlet portion of the hose crosses at right angles in the connector and (ii) having a rounded recess on a first side thereof and an angled recess on a second side thereof; and

a housing for receiving the connector, the housing having a shape that corresponds to a shape of the connector such that the connector is receivable in the housing, and having a first and a second attachable clip receiver attached to opposed sides of the housing, each of the first and second clip receivers being configured to releasably engage the connector,

the first clip receiver including a rounded portion configured to receive the rounded recess of the connector, and

the second clip receiver including an angled portion configured to receive the angled recess of the connector,

the first side of the connector that has the rounded recess being ejectable from the housing before the second side of the connector that has the angled recess.

20. The roller pump according to claim 19, wherein the first and the second clip receivers are separable from the housing, and the connector is separable from the first and the second clip receivers.