The invention relates to a device having an endovascular implant (1) for the introduction into blood vessels or body cavities of the human or animal body and an insertion aid (2), wherein the implant (1) and the insertion aid (2) being connected to each other via a detachment element (3) designed to be electrolytically corrodible so that after the implant (1) has been inserted into the body and a voltage has been applied an at least partial dissolution of the detachment element (3) takes place causing the implant (1) to be separated from its the insertion aid (3), with the detachment element (3) being made of a cobalt-chrome alloy containing at least 20% w/w cobalt and 10 to 40% w/w chrome.