Christopher A Gregory

US Patent:

6723072, Apr 20, 2004

Filed:

Jun 6, 2002

Appl. No.:

10/163690

Inventors:

J. Christopher Flaherty - Topsfield MA
Christopher Carter Gregory - Newtown PA
Derek Dwayne Mahoney - Manalapan NJ
John Michael Margicin - Levittown PA

Assignee:

Insulet Corporation - Beverly MA

International Classification:

A61M 3100

US Classification:

604131, 604 67

Abstract:

A device for delivering fluid, such as insulin, to a patient. The device includes an exit port assembly, a syringe-like reservoir including a side wall extending along a longitudinal axis towards an outlet connected to the exit port assembly, and a plunger assembly received in the reservoir. The plunger assembly includes a two-way shape memory element connecting first and second lateral segments, and having a changeable length decreasing from an uncharged length to a charged length when at least one charge is applied to the shape memory element. Successively applying a charge and removing the charge from the two-way shape memory element causes longitudinal movement of the plunger assembly towards the outlet of the reservoir in order to cause fluid to be dispensed from the reservoir to the exit port assembly.

US Patent:

20040078028, Apr 22, 2004

Filed:

Sep 15, 2003

Appl. No.:

10/662761

Inventors:

J. Flaherty - Topsfield MA, US
Christopher Gregory - Newtown PA, US
Derek Mahoney - Manalapan NJ, US
John Margicin - Langhorne PA, US

International Classification:

A61K009/22

US Classification:

604/892100

Abstract:

A device for delivering fluid, such as insulin, to a patient. The device includes an exit port assembly, a syringe-like reservoir including a side wall extending along a longitudinal axis towards an outlet connected to the exit port assembly, and a plunger assembly received in the reservoir. The plunger assembly includes a two-way shape memory element connecting first and second lateral segments, and having a changeable length decreasing from an uncharged length to a charged length when at least one charge is applied to the shape memory element. Successively applying a charge and removing the charge from the two-way shape memory element causes longitudinal movement of the plunger assembly towards the outlet of the reservoir in order to cause fluid to be dispensed from the reservoir to the exit port assembly.