Abstract: A cannula assembly, which can be used in a catheterization process, has an elongate cannula tube with a proximal inlet opening, a distal outlet opening, a lumen extending continuously between the inlet opening and outlet opening, and a sharpened cannula tip delimiting the outlet opening. The cannula tube is configured to receive and guide a flexible medical functional section, which is insertable into the lumen and movable along the lumen. A blocking device with a blocking element is assigned to the lumen. The blocking element is configured to interact with the flexible medical functional section and, depending on a movement direction of the flexible medical functional section, is automatically transferred between a blocking position, in which the blocking element blocks a withdrawal movement of the flexible medical functional section by acting on the functional section, and a release position, in which the blocking element releases an advancing movement.

Abstract: The invention relates to the use of polymeric or oligomeric active ingredients having a biocidal effect as additives in the composition of medical articles. The invention further relates to medical articles that comprise such additives.

Abstract: The invention relates to a wound dressing comprising a polymer substrate and a compound comprising a) at least one antimicrobial active agent and b) an agent that reduces the cytotoxicity, comprising an oil-in-water emulsion that additionally has one or more alkanediol(s) and/or one or more glyceryl ether(s).

Abstract: The invention relates to the use of polymeric or oligomeric active ingredients having a biocidal effect as additives in the composition of medical articles. The invention further relates to medical articles that comprise such additives.

Abstract: The invention relates to the use of at least one polymeric guanidine derivative having a biocidal effect, which can be obtained by polycondensating a guanidine acid addition salt with an amine mixture containing at least one diamine, which is selected from the group consisting of alkylene diamine and oxyalkylene diamine, as an additive in a composition for medical articles. The invention further relates to medical articles containing polyguanidines as an additive.