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:
Jan. 27, 1976
Filed:
Apr. 06, 1973
Donald J Bentley, Newport Beach, CA (US);
Bentley Laboratories, Inc., Irvine, CA (US);
Abstract
A device for removing microemboli including microparticles and aggregates of various types including degenerated blood elements from whole blood or other transfusible materials, such as packed red cells and other blood components. The device has a casing with an interior chamber and is provided with externally-connectable flow inlet and flow outlet ports relative to the interior of the chamber, with a plurality of effective layers of microemboli-removing material positioned in the chamber and sealed to the inner periphery of the casing to require blood flow therethrough in travel of the blood from the flow inlet to the flow outlet. Each of said layers of microemboli-removing material consists of a foamed open cell polyurethane to define tortuous flow passages therethrough and with the layers having progressively smaller effective pore sizes whereby the blood in flowing therethrough has substantially all of the microemboli of a size to block passages in a layer prevented from flowing thereto by adherence to the walls of the tortuous passages in a preceding layer of said material. Two different embodiments are shown, with one embodiment having bypass structure.