PUMP HEAD CARTRIDGE

摘要

An actuating means (107) for a self-adjusting pump head assembly (101), including a variable position pump shoe (102) slideably attached to a base (103), wherein the assembly (101) is used to pump liquides through a tube (104) introduced into a peristaltic pump, including (a) means (107) for translating rotational motion into linear motion, and (b) cranking means (107), including means (107) for automatically compensating for the manufacturing tolerances of a tube (104) introduced into the pump, pivotally attached to both the means (107) for translating and the shoe. The means (107) for automatically compensating preferably includes a pair of links, carrying a helical compression spring (328), pivotally anchored to both the means (107) for translating and the shoe. A peristaltic pump is also described. The pump includes (a) a self-adjusting pump head, including a variable position pump shoe (102) slideably attached to a base (103); and (b) a control for positioning, locking and applying a continuous reaction force on the shoe to compress the tube (104) between the shoe and at least one roller located on the periphery of a mandrel (150), wherein the control further comprises means (107) for translating rotational motion into linear motion, and cranking means (107), including means (107) for automatically compensating for the manufacturing tolerances of a tube (104) introduced into the pump, pivotally attached to both the means (107) for translating and the shoe. The pump may be alternatively characterized as including a disposable manifold (400) safety cartridge (505), removably attached to the base (103), to which the ends of the tube (104) are attached; with the cartridge (505) being formed to include an asymmetrical tie bar (412) that is keyed onto the base (103) to ensure that the cartridge (505) is oriented in an acceptable manner and that the tube (104) introduced into the pump will be properly installed.