Patent ID: 9173998
Filing Date: 2015-11-03
Classification: A61M

Abstract:
1. An ambulatory infusion system, comprising: a disposable infusion cartridge, the infusion cartridge including a collapsible reservoir for containing a fluid and a substantially rigid shell disposed over the collapsible reservoir and forming, an interior volume between an outside surface of the collapsible reservoir and an inside surface of the shell, the disposable infusion cartridge further including a delivery mechanism having a spool slidingly disposed in a bore, the spool including as main section and a distal section axially displaceable relative to the main section with a collapsible volume formed between a seal on the main section and a seal on the distal section; a pump device configured to selectively receive the infusion cartridge and cooperate with the infusion cartridge to deliver fluid from the reservoir to the patient, the pump device including a drive mechanism powered by a motor and selectively engageable with the spool to impart controlled axial movements to the spool to deliver fluid from the cartridge to the patient a pressure sensor located in one of the infusion cartridge and the pump, the pressure sensor in communication with the interior volume of the infusion cartridge; and a processor located in one of the infusion cartridge and the pump wherein the processor is adapted to: