Disposable fluid circuits and methods for cell washing

Patent metadata

Field	Value
Publication number	US-9956337-B2
Application number	US-201715618952-A
Country	US
Kind code	B2
Filing date	Jun 9, 2017
Priority date	Sep 22, 2011
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

Systems and methods for the washing and processing of biological fluid/biological cells are disclosed. The systems and methods utilize a disposable fluid circuit including a spinning membrane separation device to wash the biological cells.

First claim

The invention claimed is:

1. A method for the sterile sequential treatment of a biological fluid comprising:
(a) obtaining a reusable cell processing apparatus comprising a separator element for receiving a separation device for effecting the separation of biological fluid into two or more fractions;
(b) obtaining a first disposable fluid processing circuit comprising a separation device in fluid communication with a pre-attached first product container and an access device for sterile connection to a source of biological fluid;
(c) mounting said first disposable fluid processing circuit onto said reusable cell processing apparatus;
(d) sterilely joining a first source container of biological fluid to said first disposable fluid processing circuit;
(e) introducing said biological fluid from said first source container into said separation device to separate a desired biological cell component from a remainder of said biological fluid;
(f) collecting said separated biological fluid component in said first product container;
(g) transferring said collected biological fluid of said first product container to a pre-attached separation chamber;
(h) separating said collected biological fluid in said pre-attached separation chamber into first and second fractions;
(i) decanting one of said fractions from said pre-attached separation chamber and introducing one of said fractions into a second source container;
(j) removing said first disposable fluid processing circuit from said reusable cell processing apparatus;
(k) obtaining a second disposable fluid processing circuit, comprising a separation device in fluid communication with a pre-attached second product container and an access device for sterile connection to said second source container;
(l) mounting said second disposable fluid processing circuit onto said reusable cell processing apparatus;
(m) introducing the contents of said second source container into said separation device of said second disposable fluid processing circuit to separate a desired biological fluid component from a remainder of said biological fluid; and
(n) collecting a desired separated biological fluid fraction in said second product container of said second disposable fluid processing circuit.

2. The method of claim 1 further comprising:
(a) transferring the collected fraction of said second product container of said second disposable fluid processing circuit to a pre-attached separation chamber;
(b) obtaining a third disposable fluid processing circuit, said third disposable fluid processing circuit comprising a separation device in fluid communication with a pre-attached third product container and an access device for sterile connection to a third source container of biological fluid; and
(c) introducing a biological fluid from said third source container into said separation device of said third disposable fluid processing circuit to separate a desired biological fluid component from a remainder of said third source container contents.

3. The method of claim 2 further comprising combining the contents of said second product container with a treating agent.

4. The method of claim 3 wherein said treating agent is combined with said second product container contents in said second product container.

5. The method of claim 3 wherein said treating agent is combined with a carrier solution prior to combination with said second product container contents.

6. The method of claim 2 further comprising separating the contents of said second product container into first and second fractions and collecting said desired biological fluid component in said third product container.

7. The method of claim 6 further comprising transferring one of said first and second fractions to an auxiliary container set including two more containers.

8. The method claim 2 wherein said treating agent comprises a separation enhancing agent.

9. The method claim 8 wherein said separator enhancing agent comprises a buoyant density solution.

10. The method claim 1 further comprising drawing a sample from said first source container.

11. The method of claim 10 further comprising drawing a sample of said biological fluid of said first product container.

Assignees

• Fenwal Inc

Inventors

• Min Kyungyoon
• Wegener Christopher

Classifications

• A61M1/3496

  Plasmapheresis; Leucopheresis; Lymphopheresis (A61M1/3472 takes precedence) · CPC title

• A61M1/265

  inducing Taylor vortices · CPC title

• C12M37/02

  Filters · CPC title

• A61M1/3472

  with treatment of the filtrate · CPC title

• A61M1/262

  rotating · CPC title