Dialysis device for use with interface media, dialysis systems, use of dialysis device, method for establishing dialysis system, method for filling and/or priming dialysis system and method for removing air from dialysis system

Patent metadata

Field	Value
Publication number	US-12403229-B2
Application number	US-201817280621-A
Country	US
Kind code	B2
Filing date	Sep 29, 2018
Priority date	Sep 29, 2018
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

A dialysis device comprises at least a first membrane and a second membrane, wherein a first chamber formed by the first membrane is configured to receive a first fluid; a second chamber formed by the second membrane is configured to receive a second fluid; a third chamber formed in between a housing, the first membrane and the second membrane is configured to receive a third fluid; the first fluid flowing through the first membrane can be indirectly communicated with the second fluid flowing through the second membrane via the third fluid. A dialysis system, use of the dialysis device, a method for establishing the dialysis system, a method for filling and/or priming the dialysis system and a method for removing air are further disclosed. The dialysis device and the dialysis system are suitable for viscous biological dialysis fluid and no direct flow occurs between the patient and the dialysis fluid.

First claim

The invention claimed is:

1. A dialysis system comprising:
an electrolyte solution;
a first membrane comprising at least a first plurality of hollow fibers;
a second membrane comprising at least a second plurality of hollow fibers;
a first chamber formed by the first membrane, the first chamber being configured to receive a first fluid;
a second chamber formed by the second membrane, the second chamber being configured to receive a second fluid;
a third chamber formed in between a housing, the first membrane, and the second membrane, the third chamber being configured to receive the electrolyte solution;
a dialysate regeneration device fluidly coupled to the second chamber, the dialysate regeneration device configured to regenerate the second fluid after the second fluid passes through the second chamber;
a pump fluidly coupled to the third chamber, the pump configured to recirculate the electrolyte solution from an inlet port coupled with the housing at a first end of the third chamber to an outlet port coupled with the housing at a second end of the third chamber, wherein the second end is opposite the first end; and
a blood detector fluidly coupled to the third chamber, the blood detector configured to detect a blood leak into the electrolyte solution,
wherein a material and a structure of each fiber of the first plurality of hollow fibers are the same as those of the second plurality of hollow fibers.

2. The dialysis system according to claim 1 , wherein:
the first plurality of hollow fibers are configured as a first bundle of hollow fibers, and the second plurality of hollow fibers are configured as a second bundle of hollow fibers separate from the first bundle of hollow fibers.

3. The dialysis system according to claim 1 , wherein a number of fibers of the first plurality of hollow fibers is different from a number of fibers of the second plurality of hollow fibers.

4. The dialysis system according to claim 1 , wherein:
the first fluid is a patient's or animal's blood to be treated; and/or
the second fluid is a biological dialysis fluid.

5. The dialysis system according to claim 1 , wherein the dialysis system further comprises:
at least a first pair of ports coupled to the housing and configured to be communicated with the first chamber;
at least a second pair of ports coupled to the housing and configured to be communicated with the second chamber; and
at least a third pair of ports coupled to the housing and configured to be communicated with the third chamber, the third pair of ports comprising the inlet port and the outlet port.

6. The dialysis system according to claim 1 , wherein:
a direction of the first fluid flowing through the first plurality of hollow fibers is opposite to that of the second fluid flowing through the second plurality of hollow fibers; or
the electrolyte solution fully fills the third chamber.

7. The dialysis system according to claim 1 , wherein the first fluid flowing through the first membrane can be indirectly communicated with the second fluid flowing through the second membrane via the electrolyte solution.

Assignees

• Fresenius Medical Care Deutschland Gmbh

Inventors

• Jor Kee

Classifications

• A61M2205/3334

  Measuring or controlling the flow rate · CPC title

• A61M1/1696

  with dialysate regeneration · CPC title

• A61M1/1692

  Detection of blood traces in dialysate · CPC title

• A61M1/341

  by measuring the filtrate rate or volume · CPC title

• A61M1/1633

  with more than one dialyser unit · CPC title