Renal failure therapy systems having reduced time between treatments

Patent metadata

Field	Value
Publication number	US-12527899-B2
Application number	US-202118017980-A
Country	US
Kind code	B2
Filing date	Jun 23, 2021
Priority date	Jul 29, 2020
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

A renal failure therapy system includes a fresh dialysis fluid tube having a connector for connecting to a dialyzer, a spent dialysis fluid tube having a connector for connecting to the dialyzer, a dialysis fluid circuit including a fresh dialysis fluid line, a spent dialysis fluid line, at least one of (i) a first disinfection device positioned between the fresh dialysis fluid line and the fresh dialysis fluid tube, or (ii) a second disinfection device positioned between the spent dialysis fluid line and the spent dialysis fluid tube and recirculation circuitry extending to a first machine connector for mating with the connector of the fresh dialysis fluid tube during disinfection and a second machine connector for mating with the connector of the spent dialysis fluid tube during disinfection. The system also includes a control unit configured to cause the first and second disinfection devices to be energized during the disinfection.

First claim

The invention is claimed as follows:

1 . A renal failure therapy system comprising:
a blood treatment unit; a first fresh dialysis fluid tube having a connector for connecting to the blood treatment unit forming a first set with a first spent dialysis fluid tube having a connector for connecting to the blood treatment unit; a second fresh dialysis fluid tube having a connector for connecting to the blood treatment unit forming a second set with a second spent dialysis fluid tube having a connector for connecting to the blood treatment unit; and a control unit configured to cause (i) a first treatment to be run with the first or second set of fresh and spent dialysis fluid tubes connected to the blood treatment unit while the other of the first or second set of fresh and spent dialysis fluid tubes undergoes local disinfection, and (ii) a second treatment to be run with the disinfected set of fresh and spent dialysis fluid tubes in (i) connected to the blood treatment unit, while the set of fresh and spent dialysis fluid tubes used for the first treatment in (i) undergoes local disinfection.

2 . The renal failure therapy system according to claim 1 , wherein at least one of the first or second sets of fresh and spent dialysis fluid tubes that undergoes local disinfection carries dialysis fluid during the local disinfection.

3 . The renal failure therapy system according to claim 1 , wherein at least one of the first or second sets of fresh and spent dialysis fluid tubes that undergoes local disinfection is flushed with purified water prior to the local disinfection.

4 . The renal failure therapy system according to claim 1 , wherein at least one of the first or second sets of fresh and spent dialysis fluid tubes that is connected to the blood treatment unit is primed with dialysis fluid prior to connection to the blood treatment unit.

5 . A renal failure therapy system comprising:
a fresh dialysis fluid tube having a connector for connecting to a dialyzer; a spent dialysis fluid tube having a connector for connecting to the dialyzer, wherein the fresh dialysis fluid tube and the spent dialysis fluid tube form a first set of dialysis fluid tubes; a second set of dialysis fluid tubes including fresh and spent dialysis fluid tubes; a dialysis fluid circuit including
a fresh dialysis fluid line,
a spent dialysis fluid line,
at least one of (i) a first disinfection device positioned between the fresh dialysis fluid line and the fresh dialysis fluid tube, and (ii) a second disinfection device positioned between the spent dialysis fluid line and the spent dialysis fluid tube, and
recirculation circuitry extending to (i) a first machine connector for mating with the connector of the fresh dialysis fluid tube during local disinfection and (ii) a second machine connector for mating with the connector of the spent dialysis fluid tube during local disinfection; and
a control unit configured to cause:
at least one of the first or second disinfection device to be energized during the local disinfection, creating a barrier against bacterial transport;
(i) a first treatment to be run with the first or second set of fresh and spent dialysis fluid tubes connected to the dialyzer while the other of the first or second sets of fresh and spent dialysis fluid tubes undergoes local disinfection, and
(ii) a second treatment to be run with the disinfected set of fresh and spent dialysis fluid tubes in (i) connected to the dialyzer, while the first treatment set of fresh and spent dialysis fluid tubes in (i) undergoes local disinfection.

6 . The renal failure therapy system according to claim 5 , wherein the control unit is further configured to energize the at least one of the first or second disinfection device during treatment.

7 . The renal failure therapy system according to claim 5 , wherein the fresh and spent dialysis fluid tubes are self-heating tubes configured to be energized during the local disinfection.

8 . The renal failure therapy system according to claim 5 , wherein the recirculation circuitry further extends to (iii) a third machine connector for mating with the connector of the second fresh dialysis fluid tube during local disinfection and (iv) a fourth machine connector for mating with the connector of the second spent dialysis fluid tube during local disinfection.

9 . The renal failure therapy system according to claim 5 , further comprising a third disinfection device for operation with the second fresh dialysis fluid tube and a fourth disinfection device for operation with the second spent dialysis fluid tube.

10 . The renal failure therapy system according to claim 9 , wherein the dialysis fluid circuit additionally includes:
a first three-way valve, or first pair of two-way valves, positioned and arranged to direct fresh dialysis fluid to either the first disinfection device or the third disinfection device; and a second three-way valve, or second pair of two-way valves, positioned and arranged to accept spent dialysis fluid from either the second disinfection device or the fourth disinfection device.

11 . The renal failure therapy system according to claim 10 , wherein
a closed way of the first three-way valve, or a closed two-way valve of the first pair of two-way valves, forms an end of a first static disinfection pathway, wherein either the first disinfection device or the third disinfection device is located along the first static disinfection pathway, and a closed way of the second three-way valve, or a closed two-way valve of the second pair of two-way valves, forms an end of a second static disinfection pathway, wherein either the second disinfection device or the fourth disinfection device is located along the second static disinfection pathway.

12 . The renal failure therapy system according to claim 10 , wherein
a closed way of the first three-way valve, or a closed two-way valve of the first pair of two-way valves, aids in defining a first recirculation disinfection pathway, wherein either the first disinfection device or the third disinfection device is located along the first recirculation disinfection pathway, and a closed way of the second three-way valve, or a closed two-way valve of the second pair of two-way valves, forms an end of a second recirculation disinfection pathway, wherein either the second disinfection device or the fourth disinfection device is located along the second recirculation disinfection pathway.

13 . The renal failure therapy system according to claim 12 , wherein at least one of the first or second recirculation disinfection pathways is provided with a pump.

14 . The renal failure therapy system according to claim 12 , wherein at least one of the first or second recirculation disinfection pathways is provided with a disinfection heater.

15 . The renal failure therapy system according to claim 5 , further comprising a local disinfection heater positioned to operate with the fresh dialysis fluid line adjacent to the first disinfection device.

16 . The renal failure therapy system according to claim 5 , wherein at least one of the first or disinfection devices is a UV-disinfection device.

17 . The renal failure therapy system according to claim 5 , further comprising at least one through-port for accepting one of the fresh or spent dialysis fluid tubes.

18 . A renal failure therapy system comprising:
a housing; a fresh dialysis fluid flexible tube having a connector for connecting to a dialyzer; a spent dialysis fluid flexible tube having a connector for conne

Assignees

• Gambro Lundia Ab

Inventors

• Borgqvist Per-Olof
• Jansson Olof

Classifications

• A61M2205/3653

  by Joule effect, i.e. electric resistance · CPC title

• A61M2205/11

  with means for preventing cross-contamination when used for multiple patients · CPC title

• A61M1/1688

  with recirculation of the sterilising fluid · CPC title

• A61M1/1686

  by heat · CPC title

• A61M1/168 Primary

  Sterilisation or cleaning before or after use · CPC title