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:
Feb. 17, 2015
Filed:
Dec. 07, 2011
Applicant:
Michele Palmieri, Corvallis, OR (US);
Inventor:
Michele Palmieri, Corvallis, OR (US);
Assignee:
STMicroelectronics, Inc., Coppell, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M 1/00 (2006.01); F04B 17/00 (2006.01); A61M 5/142 (2006.01);
U.S. Cl.
CPC ...
A61M 5/142 (2013.01); A61M 2205/0244 (2013.01);
Abstract
Disclosed herein is a microfluidic pumping device having a piezoelectric member positioned above a displaceable membrane. A voltage is applied across the piezoelectric member causing the piezoelectric member to displace the membrane. Displacement of the membrane increases and decreases pressure in a cavity that is below the membrane. The increases and decreases in pressure actuate cantilevered check valve members to facilitate unidirectional liquid flow through the pumping device.