Abstract: This dialysis-fluid supply system, which mixes a diluent and at least two drugs to generate a dialysis fluid, and outputs said dialysis fluid, is provided with: a mixing tank which mixes the drugs and the diluent to generate the dialysis fluid; a storage tank which stores and outputs the dialysis fluid generated by the mixing tank; a transport mechanism for transporting, to the storage tank, the dialysis fluid generated by the mixing tank; an output mechanism for outputting, to a dialysis device, the dialysis fluid stored in the storage tank; and a control unit for controlling the driving of the transport mechanism and the output mechanism.

Abstract: A diaphragm pump, in which a working fluid control valve (D) opens a working fluid make-up passage (B24) to prevent a diaphragm (C) from being damaged when an excessive discharge pressure acts on the diaphragm. The working fluid control valve (D) for opening and closing the working fluid make-up passage (B24) is provided with a valve disc formed to be capable of reciprocating relative to the diaphragm (C) in a valve disc receiving chamber (B2) to close an opening of the valve disc receiving chamber (B2), means for biasing the valve disc toward the diaphragm, and means for closing the working fluid make-up passage (B24) when a distance, over which the valve disc extends from the opening of the valve disc receiving chamber, exceeds a predetermined value.

Abstract: A stroke length regulator of small dimensions and simple construction, provided with a cam for converting an eccentric movement into a reciprocating movement, a cylindrical body around which this cam is fitted, and a crank member fitted slidably in this cylindrical body and having a cam guide portion for varying an eccentric position of the cam and an outer circumferential surface portion contacting an inner circumferential surface of the cylindrical body.