Abstract: A pumping apparatus has a peristaltic drive device for pumping a medium through a line that has a compressible portion. The pump contains a one-piece shaft with offset cam segments and lamellae. The shaft may or may not include a core shaft or a continuous core region for an increase in stability. The continuous core region has cam segments offset with respect to one another and contiguous to one another. The ratio between the height and stroke of the lamellae is about 4:1 or less.

Abstract: In a pumping apparatus (1) with a peristaltic drive device (3) for pumping a medium through a line (4) having at least one compressible portion, containing a one-piece shaft (10) with cams arranged so as to be offset with respect to one another and with attached lamellae (14), positive guidance for the lamellae (14) being provided, the cams are cam segments (13) and the ratio between the lamella height (c) and the lamella stroke (h) is about 4:1 or less. In a shaft (10) for a pumping apparatus (1) with a peristaltic drive device (3), the shaft being formed in one piece, the shaft (10) is designed without a core shaft and essentially without a continuous core region or, for an increase in stability, with a thin continuous core region having cam segments (13) offset with respect to one another and contiguous to one another.