Mixing system with side ampule breaker

A device for producing a bone cement, comprising:

• an ampule breaker having a first housing, wherein the first housing comprises a first interior;
• a holder arranged in the first housing for receiving a glass ampule;
• a breaking element which is arranged in the first housing and is designed and configured to break open a glass ampule which can be received in the holder;
• a collection region which is arranged in the first housing and is designed and configured to receive a liquid from a broken-open glass ampule;
• a cartridge configured to receive a powder component of a bone cement, wherein the cartridge comprises a second housing having a second interior;
• and,
• a fluid-conducting channel for dispensing a liquid from the collection region into the second interior, wherein the fluid-conducting channel is arranged and configured to retain the liquid in the collection region, and to dispense the liquid to the second interior as soon as a pressure difference is applied between the collection region and the second interior.