Patent ID: 7341572
Filing Date: 2008-03-11
Classification: A61M

Abstract:
1. An ambulatory infusion device for dispensing a fluid into a patient comprising: a bladder enclosure having a length and comprising a sheath of flexible material which is sufficiently flexible and collapsible along a substantial portion of the length, the sheath having a first open end defining a mouth and a second closed end, the first open end being affixed to a rigid closure; a bladder support comprising a stem which extends into an elastic bladder secured in fixed position relative to said closure; the elastic bladder mounted on the bladder support, the bladder being positioned inside the sheath and having an interior volume for storing the fluid under pressure; the sheath extending from said closure toward the closed second end of the sheath spaced beyond said bladder, said closed second end of the sheath being free to conform to the body of the patient so that the device is comfortable when worn; a pressure regulator in fluid communication with the bladder; and a flow restrictor in fluid communication with the pressure regulator and positioned downstream therefrom, the flow restrictor having an inlet for receiving the fluid at an inlet pressure and an outlet for discharging the fluid at an outlet pressure.