The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2018
Filed:
Jul. 27, 2015
Applicant:
Asahi Kasei Medical Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
ASAHI KASEI MEDICAL CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M 1/36 (2006.01); B04B 5/04 (2006.01); A61M 1/02 (2006.01); A61M 1/34 (2006.01);
U.S. Cl.
CPC ...
A61M 1/3696 (2014.02); A61M 1/0209 (2013.01); A61M 1/0218 (2014.02); A61M 1/34 (2013.01); A61M 1/341 (2014.02); A61M 1/3693 (2013.01); B04B 5/0442 (2013.01); A61M 2202/0439 (2013.01);
Abstract
In the removal of white blood cells from blood, the efficiency of white blood cell removal by a filter is improved. Centrifugal force is applied to blood placed in a blood bag by centrifugal separation to form a plurality of separation layers having a concentration gradient of white blood cells. The separation layers are passed through a filter in ascending order of white blood cell concentration to remove the white blood cells from the separation layers. The separation layers from which the white blood cells have been removed are received in a first blood component bag.