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:
Oct. 29, 2002
Filed:
Sep. 20, 2000
John P. Pelmulder, Chatsworth, CA (US);
International Remote Imaging Systems, Inc., Chatsworth, CA (US);
Abstract
A flow cell for analysis of particles in a sample fluid buffered by sheath fluid has a sample inlet to receive the sample fluid and a sheath inlet for receiving the sheath fluid. The sample fluid flows in a flow direction from the sample inlet past an examination region to an outlet. A flow distributor is positioned between the sheath inlet and the examination region for distributing the sheath fluid ranging in a first direction substantially paralleled to the flow direction to the second direction substantially perpendicular to the flow direction. The distribution of the sheath fluid at the output of the distributor is vortex-free over a wide range of input directions and input chamber geometries. It eliminates the creation of vortices that could cause mixing and instability of the sample fluid in the examination area and allows greater freedom in shaping the fluid system for optimal hydrodynamic focusing.