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. 26, 2013
Filed:
Oct. 08, 2008
Michael A. Spohn, Butler, PA (US);
Thomas P. Joyce, Wilkins Township, PA (US);
Michael A. Spohn, Butler, PA (US);
Thomas P. Joyce, Wilkins Township, PA (US);
Medrad, Inc., Indianola, PA (US);
Abstract
Methods for capacitance volume correction in fluid-containing expandable bodies and associated fluid pathways are disclosed. The methods may be applied in fluid delivery systems used to supply fluids to patients during radiographic imaging procedures, including angiography. The methods control delivery of fluid to a downstream process, including providing a fluid-delivery expandable body and a pressurizing element in fluid communication with the downstream process, pressurizing the expandable body by moving the pressurizing element in the expandable body to reduce volume therein, determining an over-travel distance for the pressurizing element, and ceasing movement of the pressurizing element after allowing the pressurizing element to over-travel the over-travel distance to compensate for expansion of the expandable body under pressure. The expandable body may be a syringe and the pressurizing element may be a plunger disposed within the syringe. Movement of the pressurizing element may be controlled by an algorithm associated with a computer.