초록 ▼

A portable, ambulatory infusion pump for use with standard pre-filled infusion medicament containers is powered by a miniature compressed gas cylinder coupled to a mechanical pressure regulator which supplies regulated gas at a substantially constant pressure to an inflatable bladder. The bladder is

A portable, ambulatory infusion pump for use with standard pre-filled infusion medicament containers is powered by a miniature compressed gas cylinder coupled to a mechanical pressure regulator which supplies regulated gas at a substantially constant pressure to an inflatable bladder. The bladder is positioned between a substantially rigid pressure surface and a moveable pressure transfer plate and pushes against the transfer plate when inflated. A pre-filled medicament container is positioned over the pressure transfer plate and is squeezed between the transfer plate and the pump housing cover as the plate is displaced in response to inflation of the flexible bladder. A safety interlock assembly is connected between the pressure regulator and the inflatable bladder and prevents inflation of the bladder unless the housing cover is completely closed. Upon inadvertent opening of the pump, the internal pressurization system is vented to atmosphere.

대표청구항 ▼

[ I claim:] [1.] A portable, ambulatory infusion pump comprising:a housing defining an interior volume, the housing having exterior dimensions so as to be held comfortably in a human hand, the housing further comprising;a base;a cover, configured to be slidably mounted on the base;an end portion, th

[ I claim:] [1.] A portable, ambulatory infusion pump comprising:a housing defining an interior volume, the housing having exterior dimensions so as to be held comfortably in a human hand, the housing further comprising;a base;a cover, configured to be slidably mounted on the base;an end portion, the end portion including an access opening communicating with the interior volume, the access opening configured to receive an infusion set access spike therethrough;a pressurization system, further comprising;a replaceable, miniature compressed gas cylinder;a mechanical pressure regulator coupled to the cylinder by a bushing;a flexible inflatable bladder connected to receive pressure-regulated gas, whereby the bladder is pressurized upon introduction of pressure-regulated gas and volumetrically expands in response thereto;a pressure member angularly disposed within the housing and having a substantially flat pressure surface;a pivotally movable pressure plate, the flexible inflatable bladder disposed between the pressure surface and the pivotally movable pressure plate, the bladder expansion causing the movable pressure plate to rotatable displace in response thereto, the pressure surface and rotatably movable pressure plate defining an area therebetween sized to accept a standard, disposable pre-filled infusion medicament container; anda safety interlock assembly, coupled between the pressure regulator and the inflatable bladder, the safety interlock assembly operatively responsive to the cover being completely mated to the housing base, the safety interlock assembly preventing introduction of the pressure-regulated gas to the bladder unless the cover is completely mated to the base.