Blood treatment cassette having a dented film valve and a blood treatment apparatus

Patent metadata

Field	Value
Publication number	US-2017189596-A1
Application number	US-201515126261-A
Country	US
Kind code	A1
Filing date	Mar 13, 2015
Priority date	Mar 14, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

The present invention relates to a blood treatment cassette having a cassette body, embodied as a hard part, and a film, wherein the film is connected with the hard part and covers the hard part at least partially, wherein the hard part comprises at least one valve seat or valve section or one valve base of a valve, wherein the valve is embodied to take, in addition to a first, open position of the valve in which the valve base and the section of the film positioned above it do not touch each other, a second, closed position of the valve when applying force on the section of the film and wherein the valve base, in its longitudinal extension, comprises or is a non-straight section. The present invention also relates to a blood treatment apparatus connected with a blood treatment cassette.

First claim

1 - 8 . (canceled)

9 . A blood treatment cassette comprising:
a cassette body comprising a hard part and a film, wherein the film is connected to the hard part and at least partially covers the hard part, and wherein the hard part comprises at least one valve base of a valve, wherein the valve is configured to take a first, open position in which the valve base and a section of the film arranged above the valve base do not touch each other, and a second, closed position when applying force on the section of the film, in which second position the valve base and the section of the film touch each other, and wherein the longitudinal extension of the valve comprises a non-straight section.

10 . The blood treatment cassette according to claim 9 , wherein the valve is configured to be transferrable from the first position into the second position by pressure applied on the valve by an actuator of a blood treatment apparatus connected to the blood treatment cassette for performance.

11 . The blood treatment cassette according to claim 10 , wherein the valve is a film or phantom valve.

12 . The blood treatment cassette according to claim 9 , wherein the valve is a film or phantom valve.

13 . The blood treatment cassette according to claim 9 , wherein a dent depth (T) of the valve base is 1 to 3 times the thickness of the film or wherein the valve base is reset behind adjacent channel edge bars to 1 to 3 times the thickness of the film, towards the interior of the cassette.

14 . A blood treatment apparatus according to claim 13 , wherein the dent depth (T) is increasing or decreasing.

15 . The blood treatment cassette according to claim 9 , wherein the valve base is convex or concave.

16 . A blood treatment apparatus connected or provided, configured or suitable to be connected with the blood treatment cassette according to claim 9 , and further comprising an actuator-sensor-plate, wherein the actuator-sensor-plate comprises at least one actuator having at least two part-actuators arranged to apply force, independently of one another, on the section of the film.

17 . The blood treatment apparatus according to claim 16 , wherein the actuator-sensor-plate comprises an actuator-sensor-mat facing the blood treatment cassette, wherein said actuator-sensor-mat comprises a section which is thinner than its adjacent sections and which faces the valve base of the blood treatment cassette.

Assignees

• Fresenius Medical Care Deutschland Gmbh
• Fresenius Medical Care Deutschland Gmbh

Inventors

• Lauer Martin

Classifications

• F16K7/12

  with flat, dished, or bowl-shaped diaphragm · CPC title

• A61M1/16 Primary

  with membranes · CPC title

• A61M39/12

  for joining a flexible tube to a rigid attachment · CPC title

• A61M2205/3584

  using modem, internet or Bluetooth® · CPC title

• F16K7/126

  the seat being formed on a rib perpendicular to the fluid line · CPC title