#$%^&*AU2019232924A120191010.pdf#####ABSTRACT An implantable heart help device for assisting the pump function of the heart by exerting an external force on the heart, wherein said implantable device comprises a first fixating member adapted to be fixated to at least one of at least one vertebra, and at least one rib, and a second fixating member in contact with said heart pump device, wherein said second fixating member is displaceable in relation to said first fixating member for changing the position of said heart pump device, and a locking member adapted to lock said second fixating member in a position in relation to said first fixating member.