Infusion pump

US8282602B2 · kind B2 · utility

Assignee

• Danby Scientific Limited · GB

Inventors

• Julian Swan · London, GB
• John Charles Danby · Witham, GB

Key dates

• Filing date: May 19, 2008
• Grant date: Oct 9, 2012
• Expiry date: May 19, 2028

Classification

• Technology area (CPC —): General

Abstract

An infusion pump for administering controlled doses of a fluid comprises: a receptacle (2) for storing the fluid (6), the receptacle having an outlet (8) for dispensing the fluid; a plunger (12); a propulsion mechanism (14) which urges the plunger (12) in a direction to pressurise the fluid (6) and dispense it through the outlet (8); and a retaining member (16) which acts on the plunger (12) to control or prevent travel of the plunger (12); characterised in that the retaining member (16) is operably connected to a stepper motor (24) via a worm (22) and worm-wheel (18) drive.