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:
Mar. 06, 2018
Filed:
Oct. 02, 2013
William D. Dunfee, Newark, DE (US);
William D. Dunfee, Newark, DE (US);
Siemens Healthcare Diagnostics Inc., Tarrytown, NY (US);
Abstract
A method adapted to allow aspiration verification of a liquid such as a biological liquid or liquid reagent at low aspiration volumes (e.g., less than 25 μL). The method includes attempting to aspirate a volume of a liquid into a probe at an aspiration frequency, measuring an aspiration pressure associated with the attempted aspiration of the liquid and providing a measured pressure signal, and filtering the measured pressure signal with a filter. The filter has a passband frequency containing the aspiration frequency and excluding the frequencies of a disturbance causing noise in the measured pressure signal. Apparatus for carrying out the method are provided, as are other aspects.