The application relates to a drip chamber for an infusion device, to an infusion device with a drip chamber, and to an arrangement composed of an infusion container and of such an infusion device. The drip chamber has a securing part for securing the drip chamber releasably to the infusion container. The securing part of the drip chamber has securing elements which are arranged along the circumference of a circle and which, on the inner sides facing each other, have grooves extending along the circumference of a circle. The securing elements can be spread from a position in which they engage firmly around the connector part of the infusion container to a position in which they release the connector part of the infusion device. The securing elements secure the piercing spike of the drip chamber against slipping out of the piercing part of the connector part of the infusion container.