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. 04, 2008
Filed:
Jul. 25, 2003
Brian Blischak, Plano, TX (US);
John H. Erickson, Plano, TX (US);
Terry Daglow, Allen, TX (US);
Sandra M. Hooper, Allen, TX (US);
Bruce D. Wigness, Minneapolis, MN (US);
Brian Blischak, Plano, TX (US);
John H. Erickson, Plano, TX (US);
Terry Daglow, Allen, TX (US);
Sandra M. Hooper, Allen, TX (US);
Bruce D. Wigness, Minneapolis, MN (US);
Advanced Neuromodulation Systems, Inc., Plano, TX (US);
Abstract
The present invention relates to an implantable infusion pump having a refillable infusate reservoir in fluid communication with a delivery site via a flow path. This flow path includes a flow resistance. The infusion pump includes a sensing device(s), positioned relative to the flow path, to provide data regarding a flow rate along the flow path. The infusion pump effects a division of a total flow period into at least a plurality of unit dose periods, each unit dose period effecting delivery of a unit dose of infusate. The cumulative effect of delivering the total number of unit dose periods is the delivery of a desired dose over the total flow period. The present invention permits a reservoir pressure to vary over any portion of total flow period but effects a constant-pressure state over each unit dose cycle.