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:
Apr. 22, 2008
Filed:
Jul. 22, 2003
Steven R. Nelson, Grove City, OH (US);
Chad E. Bouton, Delaware, OH (US);
Dale M. Radcliff, Dublin, OH (US);
Roger W. Smith, Grove City, OH (US);
Clark E. Fortney, Gahanna, OH (US);
Steven R. Nelson, Grove City, OH (US);
Chad E. Bouton, Delaware, OH (US);
Dale M. Radcliff, Dublin, OH (US);
Roger W. Smith, Grove City, OH (US);
Clark E. Fortney, Gahanna, OH (US);
Abbott Laboratories, Abbott Park, IL (US);
Abstract
A medical pump, for use with a cassette having a pumping chamber, includes a pumping element with a piston slider assembly which intermittently pressurizes the pumping chamber during a pumping cycle and has a piston head connected to a main body with a single pressure sensor positioned therebetween. A camshaft is associated with the pumping element, an inlet control element, and an outlet control element for closing the pumping chamber to flow when the pumping chamber is pressurized. A processing unit receives pressure and position data from the pressure sensor and a position sensor associated with the pumping element, and processes this data to determine the operating condition of the pump. The operating conditions determined include: blocked fluid flow, no fluid in the line, no cassette associated with the pump, proper pump priming, or proper valve sealing.