Spacer mould and method for producing hip spacers

A spacer mould for producing a hip spacer, the spacer mould comprising:

• a base element having a height defined between a top side and a bottom side, wherein a hollow mould is provided on the top side of the base element as a negative image of one side of a femoral stem of the hip spacer to be generated, wherein a recess is provided on the top side of the base element, arranged on an end of the hollow mould in the base element and connected to the hollow mould, wherein the top side of the base element comprises an inclined surface, adjacent to the hollow mound and the recess, that slopes upwardly from a perimeter of the top side to a perimeter of the hollow mould and a perimeter of the recess;
• a semi-spherical insert comprising a femoral head mould as a negative image of one side of a femoral head of the hip spacer to be generated, wherein the semi-spherical insert is arrangeable in the recess of the base element at a side of the recess that is opposite to the hollow mould, such that the femoral head mould is aligned in a direction towards the hollow mould;
• an adapter insert designed as a hollow body that is open on two sides and that is arrangeable in the recess of the base element between the semi-spherical insert and the hollow mould such that the recess exerts a pressure onto the adapter insert and the semi-spherical insert when the adapter insert and the semi-spherical insert are inserted into the recess, wherein the hollow body of the adapter insert connects the femoral head mould of the semi-spherical insert to the hollow mould in the base element;
• a punch comprising a punch hollow mould in a form of the negative image of another side of the femoral stem and that is at least one of arrangeable and pressable onto a top side of the base element;
• a first cutting edge bounding a first connection of the hollow mould of the base element to the punch hollow mould of the punch is arranged on at least one of an edge of the hollow mould of the base element and an edge of the punch hollow mould of the punch;
• and
• a second cutting edge bounding a second connection of the femoral head mould to the opening of the hollow body of the adapter insert is arranged on at least one of an edge of the femoral head mould and an edge of said opening of the hollow body of the adapter insert to the femoral head mould.