Cassette module having an integrated centrifugal pump unit

Patent metadata

Field	Value
Publication number	US-2016067394-A1
Application number	US-201414787114-A
Country	US
Kind code	A1
Filing date	Apr 16, 2014
Priority date	Apr 25, 2013
Publication date	Mar 10, 2016
Grant date	—

Abstract

The invention relates to a cassette module for processing blood and therapeutic fluids in an extracorporeal blood treatment, dialysis or infusion technology, comprising a base body ( 302 ), with a first side and a second side, fluid channels integrated into the base body, a receiving unit ( 304 ) to receive a centrifugal pump means for delivering fluids, characterized in that at least some of the fluid channels are arranged on a first side of the base body, and the receiving unit for the centrifugal pump means is arranged on the second side, and the receiving unit for the centrifugal pump means is in fluid connection with the fluid channels on the first side during operation.

First claim

1 . A cassette module for processing blood and therapeutic fluids in an extracorporeal blood treatment, dialysis or infusion technology, comprising:
a base body ( 202 , 302 , 402 , 502 , 602 , 702 , 802 , 902 , 1002 ) having a first side and a second side, fluid channels ( 207 , 207 a , 307 , 307 a , 407 , 407 a , 507 , 507 a , 607 , 707 , 707 a , 907 , 907 a , 1007 , 1007 a ) integrated into the base body, a receiving unit ( 204 , 304 , 404 , 504 , 704 , 804 , 904 , 1004 ) for receiving a centrifugal pump means for delivering fluids, characterized in that at least some of the fluid channels are arranged on a first side of the base body, and the receiving unit for the centrifugal pump means is arranged on a second side, and the receiving unit for the centrifugal pump means is in fluid connection with the fluid channels on the first side during operation.

2 . The cassette module according to claim 1 , characterized in that the fluid channels ( 207 , 207 a , 307 , 307 a , 407 , 407 a , 507 , 507 a , 607 , 707 , 707 a , 907 , 907 a , 1007 , 1007 a ) on the first side of the base body form inlet and outlet lines for the fluid flows to and from the centrifugal pump means.

3 . The cassette module according to claim 1 , characterized in that the receiving unit ( 204 , 404 , 504 , 704 , 804 , 904 , 1004 ) for the centrifugal pump means on the second side of the base body has an outlet for fluids, and this outlet is connected to a fluid ramp ( 305 ), which brings the receiving unit ( 204 , 404 , 504 , 704 , 804 , 904 , 1004 ) on the second side of the base body into a fluid connection with a fluid channel on the first side ( 207 , 307 , 407 , 507 , 607 , 707 , 907 , 1007 ) of the base body.

4 . The cassette module according to claim 1 , characterized in that the receiving unit has an outlet on the second side of the base body, this outlet being in fluid connection with a fluid channel on the second side of the base body.

5 . The cassette module according to claim 4 , characterized in that a fluid channel for conducting a fluid to the centrifugal pump means is arranged on the first side of the base body, and a fluid channel for removing a fluid is arranged on the one second side of the base body.

6 . The cassette module according to claim 1 , characterized in that the receiving unit is integrally connected to the base body.

7 . The cassette module according to claim 6 , characterized in that the base body together with the receiving unit for the centrifugal pump means and the fluid channels is an injection-molded part.

8 . The cassette module according to claim 7 , characterized in that the base body with the fluid channels and the receiving unit for the centrifugal pump means form two separate parts, which are connected to one another.

9 . The cassette module according to claim 1 , characterized in that the fluid channels are partially formed by side walls, which are mounted on the base body at a right angle to the extension surface of the base body and border the fluid channels at the sides.

10 . The cassette module according to claim 1 , characterized in that the receiving unit for the centrifugal pump means on the second side of the base body is formed in part by side walls, which are mounted on the base body at a right angle to the extension surface of the base body and border the receiving unit at the sides.

11 . The cassette module according to claim 1 , characterized in that the fluid channels on the first side or the second side of the base body are covered by a film and together with the vertical side walls bordering the channels at the side they are at least partially connected and border the fluid channels.

12 . The cassette module according to claim 11 , characterized in that multiple fluid channels on one side of the base body are covered by a film and together with the bordering vertical side walls at the sides they are at least partially connected and border the fluid channels.

13 . The cassette module according to claim 1 , characterized in that the receiving unit of the centrifugal pump means forms a receiving pot in which the rotor of the centrifugal pump means is accommodated, and the vertical side walls are covered with a film and are connected and border the receiving pot.

14 . An arrangement of a cassette module and a machine console of a machine for extracorporeal blood treatment or dialysis, characterized in that
the cassette has a base body with
a receiving unit for a magnetic centrifugal pump means on a second side of the base body which is assigned to the machine console in the arrangement,
fluid channels on a first side of the cassette module which face away from the machine console in the arrangement,
a molded part on the machine console which is in form-fitting engagement with a complementary molded part on the cassette,
an impeller drive which is integrated into the machine console,
such that the cassette in the arrangement is in form-fitting and magnetic engagement with the centrifugal pump means of the cassette module.

15 . Use of a cassette module according to claim 1 in dialysis.

16 . Use of a cassette module according to claim 15 .

17 . Use of a cassette module according to an arrangement according to claim 14 .

Assignees

• Fresenius Medical Care De Gmbh

Inventors

• Wiktor Christoph
• Heide Alexander
• Weis Manfred
• Oerter Goekhan
• Wenke Marina
• Waeber Udo

Classifications

• F04D1/00

  Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (adapted for pumping specific fluids F04D7/00; priming or boosting F04D9/00) · CPC title

• A61M2205/12

  with interchangeable cassettes forming partially or totally the fluid circuit · CPC title

• A61M1/14 Primary

  Dialysis systems; Artificial kidneys; Blood oxygenators (semi-permeable membranes characterised by the material, manufacturing processes therefor B01D71/00){; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis} · CPC title

• A61M1/101 Primary

  Human Necessities · mapped topic

• A61M60/847

  arranged in a cassette · CPC title