Systems and methods for priming hemodialysis using dialysis fluid

Patent metadata

Field	Value
Publication number	US-2016263306-A1
Application number	US-201615163128-A
Country	US
Kind code	A1
Filing date	May 24, 2016
Priority date	Nov 5, 2003
Publication date	Sep 15, 2016
Grant date	—

Abstract

A method for priming a hemodialysis treatment includes: providing a disposable cassette including at least a portion of a dialysate circuit and at least a portion of a blood circuit; placing a dialyzer in fluid communication with the dialysate circuit via a to-dialyzer dialysate line and a from-dialyzer dialysate line; placing the dialyzer in fluid communication with the blood circuit via an arterial blood line and a venous blood line; placing a source of dialysis fluid in fluid communication with the dialyzer; priming the dialysate circuit with dialysis fluid from the source while both the to-dialyzer dialysate line and the from-dialyzer dialysate line are connected at their dialyzer ends to the dialyzer; and priming the blood circuit with dialysis fluid from the source by actuating at least one valve provided by the disposable cassette.

First claim

The invention is claimed as follows:

1 . A method for priming a hemodialysis treatment comprising:
providing a disposable cassette including at least a portion of a dialysate circuit and at least a portion of a blood circuit; placing a dialyzer in fluid communication with the dialysate circuit via a to-dialyzer dialysate line and a from-dialyzer dialysate line; placing the dialyzer in fluid communication with the blood circuit via an arterial blood line and a venous blood line; placing a source of dialysis fluid in fluid communication with the dialyzer; priming the dialysate circuit with dialysis fluid from the source while both the to-dialyzer dialysate line and the from-dialyzer dialysate line are connected at their dialyzer ends to the dialyzer; and priming the blood circuit with dialysis fluid from the source by actuating at least one valve provided by the disposable cassette.

2 . The method of claim 1 , wherein priming the blood circuit includes reversing a blood pump at least one time.

3 . The method of claim 2 , which includes reversing the blood pump after a drip chamber is filled with fluid.

4 . The method of claim 1 , wherein priming the blood circuit includes connecting patient ends of the arterial blood line and the venous blood line together.

5 . The method of claim 1 , which includes actuating at least one valve in the blood circuit to prime the blood circuit.

6 . The method of claim 1 , wherein priming the blood circuit includes directing the dialysis fluid at one time in a first direction away from the dialyzer and at another time in a second direction towards the dialyzer.

7 . The method of claim 1 , wherein priming the blood circuit includes directing the dialysis fluid at one time in a treatment operation direction and at another time in a reverse of the treatment operation direction.

8 . The method of claim 1 , wherein priming the blood circuit includes pumping the dialysis fluid through the dialyzer.

9 . A dialysis machine configured and arranged to perform the method of claim 1 .

10 . A method for priming a hemodialysis treatment comprising:
providing a sorbent cartridge for cleaning used dialysis fluid returning from a dialyzer; preparing a batch of dialysis fluid in a quantity commensurate with being recycled through the sorbent cartridge multiple times; priming a dialysate circuit in fluid communication with the dialyzer using the batch of dialysis fluid, while both a to-dialyzer dialysate line and a from-dialyzer dialysate line are connected at their dialyzer ends to the dialyzer; and priming a blood circuit in fluid communication with the dialyzer using the batch of dialysis fluid.

11 . The method of claim 10 , wherein preparing the batch of dialysis fluid includes mixing water and concentrate.

12 . The method of claim 10 , wherein priming the blood circuit includes pumping dialysis fluid from the batch of dialysis fluid through the dialyzer.

13 . The method of claim 10 , wherein priming the blood circuit includes connecting patient ends of the arterial blood line and the venous blood line together.

14 . A dialysis machine configured and arranged to perform the method of claim 10 .

15 . A dialysis system comprising:
a dialyzer; a disposable cassette including at least a portion of a dialysate circuit and at least a portion of a blood circuit, the dialysate circuit in fluid communication with the dialyzer via a to-dialyzer dialysate line and a from-dialyzer dialysate line, the blood circuit in fluid communication with the dialyzer via an arterial blood line and a venous blood line; a source of dialysis fluid in fluid communication with the dialyzer; at least one dialysis fluid pump configured to pump dialysis fluid from the source of dialysis fluid through the dialysate circuit; at least one blood pump configured to pump blood from a patient through the blood circuit; and at least one processor configured to operate a sequence in which (i) the dialysate circuit is primed with dialysis fluid from the source of dialysis fluid while both the to-dialyzer dialysate line and the from-dialyzer dialysate line are connected at their dialyzer ends to the dialyzer; and (ii) the blood circuit is primed with dialysis fluid from the source of dialysis fluid by actuating at least one valve provided by the disposable cassette.

16 . The dialysis system of claim 15 , wherein the source of dialysis fluid includes regenerated dialysis fluid from a sorbent cartridge.

17 . The dialysis system of claim 15 , wherein the at least one processor reverses the at least one blood pump at least one time to prime the blood circuit.

18 . The dialysis system of claim 15 , wherein the at least one valve is located in the portion of the blood circuit included in the disposable cassette.

19 . The dialysis system of claim 15 , wherein the at least one valve is in fluid communication with the arterial blood line.

20 . The dialysis system of claim 15 , wherein the at least one processor is configured to prime the blood circuit with patient ends of the arterial blood line and the venous blood line connected together.

Assignees

• Baxter Int
• Baxter Healthcare Sa

Inventors

• Kelly Thomas
• Childers Robert W
• Busby Don
• Roger Rodolfo
• El Sayyid Waleed Musatem
• Din Shahid

Classifications

• A61M1/3486

  Biological, chemical treatment, e.g. chemical precipitation; treatment by absorbents · CPC title

• A61M2205/505

  Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches · CPC title

• A61M1/3465

  using dialysate as substitution fluid · CPC title

• A61M2205/18

  with alarm · CPC title

• A61M1/1613

  Profiling or modelling of patient or predicted treatment evolution or outcome · CPC title