Abstract: A system for delivering a drug to a patient according to the preferred embodiment of the present invention is shown as being of modular construction including a control module and a reservoir module. The reservoir module is removably secured to the control module by a removable hinge member at one end and a locking member at the other end. The reservoir module includes a pressure plate upon which a tube extending from a drug container bag to the patient is supported. The control module includes a pumping mechanism including a camshaft which reciprocates valves and an expulsor in the control module engaging and interacting with the tube located on the pressure plate for forcing the drug from the drug container bag to the patient. In its most preferred form, the pressure plate includes standoffs which abut with the pump chassis for insuring proper spacing maintenance between the pressure plate of the reservoir module and the control module.

Abstract: A locking mechanism according to the preferred embodiment of the present invention is shown in use with a drug delivery system having a control module and a reservoir module. The reservoir and control modules are removably hinged together at one end and are held by the locking mechanism of the present invention at the other end. The locking mechanism includes a latch button rotatably and slideably mounted about a longitudinal axis in the control module. A locking bolt is further provided rotatably received on an eccentric portion of the latch button. The locking bolt is prevented from sliding on the latch button by a pin extending in the latch button and is also prevented from rotating with the latch button by its slideable receipt in tracks formed in the control module.

Abstract: A system for delivering a drug to a patient according to the preferred embodiment of the present invention is shown as being of modular construction including a control module and a reservoir module. The reservoir module is removably secured to the control module by a removable hinge member at one end and a locking member at the other end. The reservoir module includes a pressure plate upon which a tube extending from a drug container bag to the patient is supported. The control module includes a pumping mechanism including a camshaft which reciprocates valves and an expulsor in the control module. The valves and expulsor engage and interact with the tube located on the pressure plate for forcing the drug from the drug container bag to the patient. In its most preferred form, the pressure plate includes standoffs which abut with the pump chassis for insuring proper spacing maintenance between the pressure plate of the reservoir module and the control module.