Chamber for a blood treatment system, blood tubing system, and blood treatment system

• US 10,251,992 B2
• Filed: 12/18/2014
• Issued: 04/09/2019
• Est. Priority Date: 06/24/2009
• 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: Spickermann, Reiner, Wiesen, Gerhard
• Primary Examiner(s): Cecil, Terry K
• Application Number:
  US14/575,275
• Publication Number:
  US 20150182683A1
• Time in Patent Office: 1,573 Days
• CPC Class Codes: A61M 1/1601 Control or regulation
• CPC Class Codes: A61M 1/3627 Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
• CPC Class Codes: A61M 2205/7536 allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
• CPC Class Codes: B01D 19/0031 by filtration

Abstract

A chamber for a blood treatment system having a blood inlet and a blood outlet, a filter element for air separation which is arranged at the head side with respect to the position of the chamber in the operating state, and which can be decoupled from the blood present in the chamber in the operating state via a further liquid.

Claims

1. A chamber for a blood treatment system, said chamber comprising:

a blood inlet and a blood outlet;

a roof provided at a top end of the chamber, the roof including a dome having a sidewall and a lower end fluidly connected with an interior of the chamber, with the dome being located axially atop the roof along a longitudinal axis of the chamber; and

a filter element for air separation, said filter element being

(i) arranged at the top end of the chamber with respect to a position of the chamber in an operating state thereof and

(ii) decouplable during the operating state from blood (B) present in the chamber by a liquid (D) therein,

with the blood inlet being arranged at the top end of the chamber and through the roof thereof, and

with the filter element being located axially atop the dome at a highest point of the chamber.

2. The chamber in accordance with claim 1, wherein the blood outlet is arranged in the chamber at the bottom end with respect to the position of the chamber in the operating state.

3. The chamber in accordance with claim 1, wherein the liquid (D) is suppliable continuously or at predefined time intervals, and/or the filter element is a hydrophobic filter membrane, or includes a hydrophobic filter membrane.

4. The chamber in accordance with claim 1, further comprising a screen element arranged in front of the blood outlet.

5. The chamber in accordance with claim 1, wherein the chamber has a substantially cylindrical base body,

the chamber is formed eccentrically and/or in a flared manner in an upper end thereof such that the blood entering into the chamber via the blood inlet is dripped on to an oblique wall formed thereby, with the blood inlet being arranged eccentrically and parallel to the longitudinal axis of the chamber so that the blood is supplied to the chamber in an off-center manner, and/or

an outlet opening of the blood inlet is located beneath a blood level (S) present in the chamber during operation.

6. The chamber in accordance with claim 1, wherein the chamber is a venous drip chamber of a blood hose system.

7. The chamber according to claim 6, wherein the blood hose system is a dialysis blood hose system.

8. A blood hose system comprising at least one chamber in accordance with claim 1.

9. A blood treatment system comprising at least one chamber in accordance with claim 1.

10. The blood treatment system in accordance with claim 9, wherein the blood treatment system is a dialysis machine, and

the liquid (D), which is supplied via a supply port, is a filtered and pyrogen-free dialysate which is at least one of provided by and treated by the dialysis machine.

11. A chamber for a blood treatment system, said chamber comprising:

a blood inlet and a blood outlet;

a roof provided at a top end of the chamber, the roof including a dome having a sidewall and a lower end fluidly connected with an interior of the chamber, with the dome being located axially atop the roof along a longitudinal axis of the chamber;

a filter element for air separation, said filter element being

(i) arranged at the top end of the chamber with respect to a position of the chamber in an operating state thereof and

(ii) decouplable during the operating state from blood (B) present in the chamber by a liquid (D) therein; and

a supply port via which the liquid (D) is supplied to the chamber,

with the filter element being located axially atop the dome at a highest point of the chamber, and

with the supply port being located in the sidewall of the dome, below and adjacent the filter element.

12. The chamber according to claim 11, wherein the blood inlet is arranged at the top end of the chamber.

13. The chamber in accordance with claim 11, wherein the supply port includes an element that prevents a backflow therein.

14. The chamber according to claim 13, wherein the element that prevents the backflow is a check valve.

15. The chamber in accordance with claim 11, wherein an outlet of the supply port is arranged in the dome directly next to the filter element.

16. The chamber in accordance with claim 11, wherein the liquid (D) which is supplied via the supply port is a filtered and pyrogen-free liquid.

17. The chamber according to claim 16, wherein the filtered and pyrogen-free liquid is at least one of a pyrogen-free and filtered dialysate, and a saline solution.

18. A chamber for a blood treatment system, said chamber comprising:

a blood inlet and a blood outlet;

a roof provided at a top end of the chamber, the roof including a dome having a sidewall, and a lower end fluidly connected with an interior of the chamber, with the dome being located axially in the roof along a longitudinal axis of the chamber;

a filter element for air separation, said filter element being

(i) arranged axially in the dome at a highest position of the chamber, above an outlet opening of the blood inlet, with respect to a position of the chamber in an operating state thereof and

(ii) decouplable during the operating state from blood (B) present in the chamber by a liquid (D) therein; and

a supply port in a side of the dome, via which the liquid (D) is supplied to the chamber.

19. The chamber according to claim 18, wherein the supply port is arranged in the dome to supply the liquid (D) such that the liquid (D) washes the filter element.