Implant for fixing a cranial bone flap in a cranial opening

An implant for fixing a cranial bone flap in a cranial opening, the implant comprising:

• a longitudinal axis configured to align along an axial direction of the cranial opening;
• a transverse axis configured to align along a radial direction of the cranial opening;
• a first portion designed to transfer force to the cranial bone flap;
• a second portion designed to transfer force to a skull bone encircling the cranial opening;
• and
• a mechanism operatively connected to the first portion and the second portion,
• the mechanism being configured such that a transverse spacing, projected onto the transverse axis, between the first portion and the second portion, is enlargeable, such that the first portion is pressable radially inwardly against the cranial bone flap, and such that the second portion is pressable radially outwardly against the skull bone,
• the first portion and/or the second portion being designed for arrangement in an annular gap formed between an outer circumference of the cranial bone flap and an inner circumference of the skull bone, and
• wherein the mechanism has at least one clamping element and a cone element, wherein the at least one clamping element is movably mounted along the transverse axis and has an inner cone surface and an end face forming the first portion or the second portion, wherein the cone element is movably mounted along the longitudinal axis and has an outer cone surface interacting with the inner cone surface, and wherein the at least one clamping element is displaceable by a movement of the cone element along the transverse axis.