Container for collection of concentrate

• US 5,540,265 A
• Filed: 06/23/1993
• Issued: 07/30/1996
• Est. Priority Date: 06/26/1992
• Status: Expired due to Term

• Current Assignee: Fresenius AG (Fresenius SE & Co. KGaA)
• Original Assignee: Fresenius AG (Fresenius SE & Co. KGaA)
• Inventors: Weber, Daniel, Polaschegg, Hans-Dietrich, Pieper, Walter
• Primary Examiner(s): JACYNA, J CASIMER
• Application Number:
  US08/081,747
• Time in Patent Office: 1,133 Days
• Field of Search: 141/2, 141/9, 141/10, 141/18, 141/21, 141/67, 141/68, 141/91, 141/92, 141/100, 141/114, 141/285, 141/286, 141/313, 141/314, 141/324-326, 141/301, 141/357, 141/346-349 , 141/351-354, 604/416, 222/105, 222/106, 222/395, 222/400.7, 285/131, 285/132, 285/133.1, 366/136, 366/137, 138/111, 138/114, 138/115, 210/646, 210/647, 137/268, 251/149.6
• US Class Current: 141/301
• CPC Class Codes: A61M 1/1656 Apparatus for preparing dialysates
• CPC Class Codes: A61M 1/1666 by dissolving solids
• CPC Class Codes: A61M 1/167 Flexible packaging for solid concentrates
• CPC Class Codes: A61M 2039/1005 Detection of disconnection
• CPC Class Codes: A61M 2205/6045 having complementary physical shapes for indexing or registration purposes
• CPC Class Codes: A61M 39/26 Valves closing automatically on disconnecting the line and opening on reconnection thereof check valves A61M39/24
• CPC Class Codes: F16L 37/32 at least one of two lift valves being opened automatically when the coupling is applied

Abstract

The invention concerns a bag to accommodate solid or fluid concentrate which is used to prepare dialysis fluid using a dialysis machine. The bag consists of a bag body and at least one opening, whereby the opening is sealingly surrounded by a plug component (220). In the coupled state with a second plug component (210), the plug component (220) forms a flow connection with the interior of the bag. The plug component also has coupling means (276, 278) which are suitable to be connected with a second complementary plug component (210), which is disposed on the dialysis machine. By means of the plug connector, in the coupled state, a first flow path is formed from the dialysis machine to the interior of the bag and a second flow path is formed back from the interior of the bag to the dialysis machine.

Claims

1. A bag for use in apparatus for dialysis to accommodate solid or fluid concentrate for preparation of dialysis fluid using a dialysis machine, the bag having a bag body and at least one opening, wherein a first plug component is provided on the opening of the bag, which first plug component is an elongate tube extending from a first end to a second end and which sealingly surrounds the opening at said second end, whereby in a coupled state the first plug component produces a flow connection with the bag, the first plug component including coupling means at said first end, which arc connectable with a second complementary plug component provided on the dialysis machine, creating a first flow path from the dialysis reaching to the bag and a second flow path back from the bag to the dialysis machine, wherein the first plug component having an inlet for fluid flowing from the dialysis machine to the bag, and an outlet for diluted concentrate going back from the bag to the dialysis machine located at said first end adjacent said coupling means.

2. The bag according to claim 1, characterized in that said tube is projecting into the interior of the bag.

3. The bag according to claim 2, characterized in that the second end of the tube is provided on its free end with a filter.

4. The bag according to claim 1, characterized in that the first and the second flow paths are disposed concentrically.

5. The bag according to claim 4, characterized in that the first and the second flow paths open respectively into an inlet and an outlet, which are likewise disposed concentrically.

6. The bag according to claim 4, characterized in that the first and the second flow paths open respectively into an inlet and an outlet, which are disposed in parallel.

7. The bag according to claim 1, characterized in that the first and the second flow paths are disposed in parallel.

8. The bag according to claim 1, characterized in that the plug component has coding which characterizes specific bag contents in each case.

9. The bag according to claim 1, characterized in that the plug component has catch means which assure the leak-proof connection with the second plug component.

10. A plug connector for use with a bag to accommodate solid or fluid concentrate for the preparation of dialysis fluid using a dialysis machine, having two plug components, whose first plug component is attached on the opening of the bag, and whose second plug component is disposed on the dialysis machine and is connected to a dialysis fluid feed line, wherein the second plug component consists of a socket body, in which an essentially cylindric recess open to the surroundings is designed, into which the first plug component can be inserted, and in which, in a valve chamber, a valve element is shiftably disposed, the valve chamber is linked to an outlet channel, and an inlet channel opens into a region of the recess, in which the valve element is shiftable, the valve element being shiftable toward the input side of the second plug component in a forward position, in which the inlet channel and the outlet channel are in fluid communication with each other and in which the inlet channel and the outlet channel are not in fluid communication with the input side of the second plug component, and the valve element being shiftable away from the input side in a backward position, in which the inlet channel and the outlet channel are in fluid communication with the input side of the second plug component and the valve element is preloaded by means of an elastic element in the forward position.

11. The plug connector according to claim 10, characterized in that a sealing liner is inserted in the valve chamber through which the inlet channel is guided such that it opens into the region, in which the valve element is shiftable.

12. The plug connector according to claim 11, characterized in that the sealing liner is sealed against the socket body with at least one O-ring.

13. The plug connector according to claim 10, characterized in that sealing means are provided in the valve chamber, in the region of the recess in which the valve element is shiftable or both.

14. The plug connector according to claim 13, characterized in that the sealing means comprise a movable O-ring which is disposed depending on the position of the valve element respectively sealingly alternatively between the inlet channel and the outlet channel, or seals the valve chamber between the valve element and the sealing liner against the input side of the second plug component.

15. The plug connector according to claim 13, characterized in that the sealing means further comprise an O-ring, which seals the valve chamber between the socket body and the valve element in the closed position against the input side of the second plug component.

16. The plug connector according to claim 13, characterized in that the sealing means comprise two O-rings placed at an interval from each other in the recess or disposed on the sealing liner, between which O-rings the inlet channel opens, and can respectively be engaged alternatively with the valve element.

17. The plug connector according to claim 10, characterized in that the valve element is provided on its side region facing the valve chamber with a smaller diameter.

18. The plug connector according to claim 17, characterized in that the valve element has a radial boring on its side region facing the valve chamber.

19. The plug connector according to claim 10, characterized in that the valve element is provided on the side facing the recess or the input side with valve activation means.

20. The plug connector according to claim 10, characterized in that the valve chamber is partitioned off from the elastic element by means of an elastic wall.

21. The plug connector according to claim 10, characterized in that in the recess at least one seal is disposed to seal the first plug component when the two plug components are coupled with each other.

22. The plug connector according to claim 10, characterized by a sensor means to determine the position of the valve element.

23. The plug connector according to claim 10, characterized by catch means to lock the first plug component in the recess.

24. The plug connector according to claim 10, characterized in that for the cleaning of the second plug component a complementary cap is attached to its input side, which cap moves the valve element out of the closed position, and by means of which the first and second flow path are short-circuited.

25. The plug connector according to claim 10, characterized in that the second plug component has codes which correspond in each case with codes on the first plug component.

26. The plug connector according to claim 10, characterized in that a second inlet channel opens into the valve chamber, which channel, depending on the operating state, is linked either with an additional concentrate container or with the dialysis fluid circuit.

27. The plug connector according to claim 26, characterized in that the second inlet channel is sealed against the valve chamber by sealing means installed on the valve element, when the first and the second plug components are coupled with each other.

28. The plug connector according to claim 10, characterized in that the valve element can be brought into a first position, in which the valve chamber is sealed against the input side of the recess, but is linked with at least one inlet channel and the outlet channel, and into a second position in which the inlet channel is linked with the recess and the valve chamber with the outlet channel, and a channel of the first plug component opens into the valve chamber.

29. The plug connector according to claim 10, characterized in that the valve element can be brought into a position in which the inlet channel is locked, and one channel of a plug in the form of a tube opens into the valve chamber linked with the outlet channel.

30. Apparatus for dialysis, comprising:

a dialysis machine having a dialysis fluid feed line;

a bag to accommodate solid or fluid concentrate for preparation of dialysis fluid, said bag including a bag body and at least one opening;

a first plug component provided on the opening, which plug sealingly surrounds the opening, the first plug component having an inlet for fluid flowing out of the dialysis machine and an outlet for diluted concentrate flowing back to the dialysis machine;

a second plug component disposed on the dialysis machine and connected to the dialysis fluid feed line, the second plug component comprising a socket body in which an essentially cylindrical recess open to its environment is provided into which the first plug component is insertable and in which a valve element preloaded in a closed position by means of an elastic element is shiftably disposed in a valve chamber, the valve chamber being linked to an outlet channel and an inlet channel opening into a region of the recess in which the valve element is shiftable; and

detachable means for coupling the first and second plug components, whereby when the first and second plug components are connected a first flow path from the dialysis machine to the bag and a second flow path back from the bag to the dialysis machine are formed.

31. Apparatus according to claim 30, wherein the inlet of the first plug component for fluid of the dialysis machine and the outlet plug component for diluted concentrate flowing back to the dialysis machine are respectively linked with a tube projecting into the bag.

32. Apparatus according to claim 31, wherein the tube linked to the outlet is provided at a free end thereof with a filter.

33. Apparatus according to claim 30, wherein a sealing liner is inserted in the valve chamber through which the inlet channel is guided such that it opens into the region in which the valve element is shiftable.

34. Apparatus according to claim 33, wherein the sealing liner is sealed against the socket body with at least one O-ring.

35. Apparatus according to claim 30, wherein sealing means are provided in at least one of the valve chamber and the region of the recess in which the valve element is shiftable.