Abstract: A self-sealing and self-centering piston has a domed piston plate and a substantially cylindrical skirt section. The skirt section joins the rear of the piston plate. A gap having a depth is formed between a first portion of the skirt section and a front lamella. A rear lamella adjoins the front lamella. In addition, a second section of the skirt section has a first seal and a second seal.

Abstract: A self-sealing and self-centering piston has a domed piston plate and a substantially cylindrical skirt section. The skirt section joins the rear of the piston plate. A gap having a depth is formed between a first portion of the skirt section and a front lamella. A rear lamella adjoins the front lamella. In addition, a second section of the skirt section has a first seal and a second seal.

Abstract: An applicator and applicator kit for particulate bone replacement materials, autologous or heterologous cancellous bone, demineralised bone matrix. The applicator (1) contains a hollow tube (12) including on one end a bladed shutter. The applicator comprises first fastener (15) for engaging a second component. The second component contains a rod (2) with a handle (21) on one end and a plunger (22) on the opposite end. The rod is arranged in a guide sleeve which is moved along the rod (2) and comprises second fastening means (23) that can be connected to the fastener (15) of the applicator (1) in reversible manner. The applicator kit contains a mixing cup connected to the tube (12) instead of the rod such that the material to be applied is filled into the tube (12) easily prior to application.

Abstract: A rigid container made of plastics for receiving a solid or liquid concentrate for the preparation of a dialysis fluid for use in a dialysis machine, the container consisting of a base part and a lid part and being equipped with a first connector for feeding and a second connector for draining a liquid and for connecting to a dialysis machine, and being otherwise closed or closable in an airtight manner, is characterized in that the second connector is connected to an outlet line (3), the feeding opening of which is arranged near the bottom of the base part.

Abstract: A blood-taking device has a comparatively flexible inner tubule and an outer tubule. There is an annular gap between both tubules. The front end of the inner tubule is provided with an end wall pressing against the annular protrusion of an end wall of the outer tubule. In order to fix the inner and outer tubules with respect to each other, the edge of the inner tubule end wall has a locking profile interlocking with a counter profile of the outer tubule. During centrifugation the inwardly directed protrusion sinks into the soft material of the end wall of the inner tubule. Thus, liquid is prevented from entering the annular gap during centrifugation.