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:
Jul. 03, 2007
Filed:
Dec. 17, 2004
Neal F. Bellet, Walnut Creek, CA (US);
Jeffrey Shindelman, Castro Valley, CA (US);
Thomas E. Worthy, Walnut Creek, CA (US);
Kimberly Haley, Belmont, CA (US);
Richard K-t Lee, Fremont, CA (US);
Jane Eunhee Kyung, Sunnyvale, CA (US);
Suyue Qian, Fremont, CA (US);
Neal F. Bellet, Walnut Creek, CA (US);
Jeffrey Shindelman, Castro Valley, CA (US);
Thomas E. Worthy, Walnut Creek, CA (US);
Kimberly Haley, Belmont, CA (US);
Richard K-T Lee, Fremont, CA (US);
Jane Eunhee Kyung, Sunnyvale, CA (US);
Suyue Qian, Fremont, CA (US);
Cholestech Corporation, Hayward, CA (US);
Abstract
An immunoassay cassette, apparatus, and method for detecting an analyte in a liquid body-fluid sample are disclosed. The cassette has a body and a support mounted on the body, for movement relative to the body to first and second transfer positions. Sample supplied to a sample well in the cassette body is transferred to a reagent reservoir on the cassette body, by moving the support to its first transfer position. Here the sample reacts with a first reagent composition in the reservoir effective to form a modified sample. The modified sample is then transferred to a reagent strip on the support by moving the support to its second transfer position. The reagent strip has a transfer zone at which sample material is transferred to the strip, a second reagent composition effective to react with the modified sample to form a detectable analyte-dependent product, and a detection zone located downstream at which the detectable product can be observed. By controlling movement of the support to its first and second positions, the cassette can effectively handle a variety of samples having different flow rates.