Abstract: A connector of an implantable medical device is connectable to a mating connector of an assembly to be connected to the implantable medical device along an insertion direction. The connector comprises a contacting device for making electrical contact with an electrical contact element of the mating connector, wherein the contacting device comprises a housing and a contact spring arranged in the housing. The contact spring forms a multiplicity of head sections for electrically contacting the electrical contact element of the mating connector, a multiplicity of first foot sections electrically contacting the housing and a multiplicity of second foot sections electrically contacting the housing, the first foot sections being arranged at a first axial position and the second foot sections at a second axial position different than the first axial position, when viewed along the insertion direction.

Abstract: A spring sleeve for an electrical contact element, in particular for a medical implant, including a connector bore for receiving an electrical mating contact in an insertion direction; at least one spring accommodating region, which is disposed around the connector bore, at least in regions, and is open, at least in regions, toward the connector bore, said spring accommodating region being provided to receive a spring element for the electrical contacting of the electrical mating contact, wherein an open space is provided in the spring accommodating region such that a properly inserted spring element can deflect into the open space when the mating contact is inserted. Furthermore, an electrical contact element comprising a spring sleeve is proposed, as well as a method for producing a contact element.