Sandra Claire Hooper

US Patent:

7338464, Mar 4, 2008

Filed:

Jul 25, 2003

Appl. No.:

10/626902

Inventors:

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

Assignee:

Advanced Neuromodulation Systems, Inc. - Plano TX

International Classification:

A61M 31/00
A61K 9/22

US Classification:

604 65, 6048921

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.

US Patent:

20020156464, Oct 24, 2002

Filed:

Mar 1, 2001

Appl. No.:

09/796969

Inventors:

Brian Blischak - Plano TX, US
John Erickson - Plano TX, US
Terry Daglow - Allen TX, US
Sandra Hooper - Allen TX, US
Bruce Wigness - Minneapolis MN, US

International Classification:

A61K009/22

US Classification:

604/892100

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.