A device for producing a spacer (42, 92, 142, 192) by curing bone cement paste (36) in a casting mold, wherein the spacer (42, 92, 142, 192) is provided to temporarily replace a joint or a part of a joint comprising an articulating surface of the joint in the medical field, in particular to temporarily replace a hip joint, a knee joint or a shoulder joint, the device having
- a casting mold lower part (1, 51, 101, 151), wherein the casting mold lower part (1, 51, 101, 151) has a cavity (2, 52, 102, 152) for receiving a bone cement paste (36) and for molding a first surface region of the spacer (42, 92, 142, 192) from the bone cement paste (36);
- a casting mold wall (3, 53, 103, 153) which extends peripherally from a peripheral edge of the cavity (2, 52, 102, 152) of the casting mold lower part (1, 51, 101, 151) away from the cavity (2, 52, 102, 152) and which is open on the side opposite from the cavity (2, 52, 102, 152), such that the cavity (2, 52, 102, 152) is accessible through an interior (4, 54, 104, 154) delimited by the casting mold wall (3, 53, 103, 153);
- a casting mold upper part (5, 55, 105, 155), wherein the casting mold upper part (5, 55, 105, 155) has a shaping surface (6, 56, 106, 156) for molding a second surface region of the spacer (42, 92, 142, 192) from the bone cement paste (36), wherein the casting mold upper part (5, 55, 105, 155) is insertable through the open side of the casting mold wall (3, 53, 103, 153) opposite from the cavity (2, 52, 102, 152) into the interior (4, 54, 104, 154) and is displaceable in the direction of the cavity (2, 52, 102, 152), such that a hollow space is formed which is delimited by the cavity (2, 52, 102, 152) of the casting mold lower part (1, 51, 101, 151), the shaping surface (6, 56, 106, 156) of the casting mold upper part (5, 55, 105, 155) and the casting mold wall (3, 53, 103, 153) and in which the spacer (42, 92, 142, 192) is moldable;
- at least one container (7, 57, 107, 157) for receiving excess bone cement paste (38);
- and
- at least one opening (8, 58, 108, 158) in the shaping surface (6, 56, 106, 156) of the casting mold upper part (5, 55, 105, 155) and/or in the cavity (2, 52, 102, 152) of the casting mold lower part (1, 51, 101, 151), wherein the at least one opening (8, 58, 108, 158) opens into the at least one container (7, 57, 107, 157) for receiving excess bone cement paste (38), wherein
- the device has one or two lid(s) (9, 59, 109, 159),
- with which the casting mold upper part (5, 55, 105, 155) is closed or closable to the outside on the side opposite from the shaping surface (6, 56, 106, 156) of the casting mold upper part (5, 55, 105, 155), such that an upper container closed to the outside is formed as one of the at least one containers (7, 57, 107, 157) for receiving bone cement paste (36) between the casting mold upper part (5, 55, 105, 155) and the lid (9, 59, 109, 159), and/or
- with which the casting mold lower part (1, 51, 101, 151) is closed or closable to the outside on the side opposite from the cavity (2, 52, 102, 152) of the casting mold lower part (1, 51, 101, 151), such that a lower container closed to the outside is formed as one of the at least one containers (7, 57, 107, 157) for receiving bone cement paste (36) between the casting mold lower part (1, 51, 101, 151) and the lid (9, 59, 109, 159),
- wherein the or one of the lid(s) (9, 59, 109, 159) is placed or placeable into or onto the casting mold upper part (5, 55, 105, 155) or into or onto an internal wall (11, 61, 111, 161) of the casting mold upper part (5, 55, 105, 155) in order to close the side opposite from the shaping surface (6, 56, 106, 156) of the casting mold upper part (5, 55, 105, 155) to the outside and there form a closed container (7, 57, 107, 157) for receiving excess bone cement paste (38), and/or the or one of the lid(s) (9, 59, 109, 159) is placed or placeable into or onto the casting mold lower part (1, 51, 101, 151) in order to close the side opposite from the cavity (2, 52, 102, 152) of the casting mold lower part (1, 51, 101, 151) to the outside and there forms a closed container (7, 57, 107, 157) for receiving excess bone cement paste (38).