Valve

• US 20040084647A1
• Filed: 03/13/2003
• Published: 05/06/2004
• Est. Priority Date: 09/20/2000
• Status: Active Grant

• Current Assignee: Fresenius Medical Care Deutschland GmbH (Fresenius SE & Co. KGaA)
• Original Assignee: Fresenius Medical Care Deutschland GmbH (Fresenius SE & Co. KGaA)
• Inventors: Braun, Juergen, Beden, Josef, Schneider, Hans-Peter
• Granted Patent: US 7,044,432 B2
• Time in Patent Office: Days
• US Class Current: 251/61.1
• CPC Class Codes: A61M 1/367 Circuit parts not covered by the preceding subgroups of group A61M1/3621
• CPC Class Codes: A61M 2205/128 with incorporated valves
• CPC Class Codes: A61M 5/16813 by controlling the degree of opening of the flow line
• CPC Class Codes: F16K 7/10 with inflatable member

Abstract

The invention relates to a valve for the closure of fluid channels, in particular for use in disposable cartridges for extracorporeal circulations, with a valve body with a pressure channel, a sealing cap, which can cooperate with the valve body in such a way that it closes off the end of the pressure channel on the valve body side against the surroundings, whereby the valve is designed in such a way that a pressure chamber can be formed between the pressure channel and the sealing cap, and whereby the sealing cap has a deformable sealing area (8) for entry into a fluid channel in order to close the latter. The invention further relates to a device for use with a disposable cartridge for at least one fluid channel, which has a valve according to the invention and respectively a housing for a valve according to the invention. Finally, the invention relates to a disposable cartridge for use with the device according to the invention and a sealing cap for use with a valve according to the invention.

Claims

1. A valve for the closure of fluid channels, in particular for use with disposable cartridges for extracorporeal circulations, which comprises a valve body (2) with a pressure channel (4) and a sealing cap (6), which cooperates with the valve body (2) in such a way that it closes off the end of the pressure channel (4) on the valve body side against the surroundings, and is designed in such a way that a pressure chamber can be formed between the pressure channel (4) and the sealing cap (6), whereby the sealing cap (6) has a deformable sealing area (8) for entry into a fluid channel (22) in order to close the latter.

2. The valve according to claim 1, in which the sealing cap (6) is designed detachable from the valve body (2).

3. The valve according to any one of claims 1 and 2 with a fixing device (18) for fixing the valve body (2) in a housing (26).

4. The valve according to claim 3 with a sealing surface (20) on the valve body (2), which surrounds the sealing cap (6) in such a way that the sealing cap (6) is pressed on the sealing surface (20) when the valve body (2) is fixed in a housing (26).

5. The valve according to any one of claims 1 to 4, whereby the sealing cap (6) has a shoulder (12) for the fitting into a fluid channel (22).

6. The valve according to any one of claims 1 to 5, whereby the sealing cap (6) has a projection (14) for preventing direct contact of the valve body (2) with the sealing area (8).

7. The use of a valve according to any one of claims 1 to 6 for controlling the fluid flow rate in a fluid channel (22) of a disposable cartridge (28).

8. A device for use with a disposable cartridge, in particular for extracorporeal circulations, which has at least one fluid channel (22), with at least one valve (1) according to any one of claims 1 to 6 for controlling the fluid flow rate in the fluid channel (22).

9. The device according to claim 8, with which the valve (1) is provided in a detachable manner in a housing (26).

10. The device for use with a disposable cartridge (28) with at least one fluid channel (22), in particular for use in extracorporeal circulations, with a housing (26) for a valve (1) according to any one of claims 1 to 6, whereby the housing (26) is arranged with respect to a fluid channel (22) in such a way that a valve (1) according to any one of claims 1 to 6 can be inserted in the housing (26) for the closure of the fluid channel (22).

11. A disposable cartridge with at least one fluid channel (22), the flow rate whereof must be able to be controlled, whereby the cartridge (28) is designed in such a way that it can be used with a device according to any one of claims 8 to 10.

12. A sealing cap which is designed such that it can be used with a valve (1) according to any one of claims 1 to 6.