Patent attributes
Embodiments of the invention include a fluid transfer device, for example, for medical fluids. The device includes a housing, two piercing elements mounted in the housing, and a slide arranged between the piercing elements. The slide may be displaced with respect to the piercing elements such that, in a first position, a flow connection is established between the two piercing elements, and, in a second position, a flow connection is established between one of the piercing elements and a lateral opening of the housing. In the area of the lateral opening, the housing may have a connector for insertion of a syringe cone of a syringe. When the syringe cone is inserted into the connector, the front end of the syringe cone may move the slide from the first position to the second position.