Abstract: A reservoir (10, 26, 80, 126, 226, 380) includes a rigid wall (12, 28, 82, 128, 228, 382), a flexible membrane (14, 34, 134, 234, 334) sealingly secured to the rigid wall (12, 28, 82, 128, 228, 382) to define a variable volume chamber (18, 38, 138, 238, 338), and inlet (40, 140, 240, 340) and exit (42, 142, 242, 342) ports in fluid communication with the chamber (18, 38, 138, 238, 338). A drive surface (24, 50, 150, 250, 350) engages the membrane (14, 34, 134, 234, 334) to position it adjacent the rigid wall (12, 28, 82, 128, 228, 382) to define a minimum volume position. The drive surface (24, 50, 150, 250, 350) may be moved so that the membrane (14, 34, 134, 234, 334) flexes out of the minimum volume position to an expanded volume position. The membrane (14, 34, 134, 234, 334) may be coupled to the drive surface (24, 50, 150, 250, 350) or be uncoupled from the drive surface (24, 50, 150, 250, 350).

Abstract: The holding plate for medical equipment, in particular for medical blood pressure measuring, blood withdrawal, infusion and transfusion apparatuses which have a plate-like fixing device with which they can be fixed to the holding plate, has two parallel guide tracks (3, 4) with grooves (4, 5; 27, 28) for accommodation of the plate-like fixing device. At least one of the grooves (4, 5) has a stop (13). A spring-pretensioned (6) catch stud (10) protrudes from the holding plate (1), the stop (13) and the catch stud (10) having a distance between them, based on the longitudinal direction of the guide tracks (3, 4), which corresponds to the length of the plate-like fixing device.

Abstract: A method for the production of stopcocks for medical devices including a plug and a housing made of plastic. First one of the two parts (1 or 9) is injected and afterwards the other part (9 or 1) is injected into or around the already manufactured part (1 or 9).