Drug delivery device for delivering at least one drug, optionally at least one reconstituted drug, medical device and medical system

A method of using a drug delivery device, wherein the drug delivery device comprises:

• a case,
• at least one interface portion being part of an interface to a medical device,
• a retaining space within the case, the retaining space comprising at least a portion of a fluid guide system,
• wherein the case comprises at least one drug container,
• wherein the at least one interface portion of the drug delivery device comprises at least one inflow port of the fluid guide system of the drug delivery device,
• wherein the fluid guide system is fluidically coupled to the at least one drug container,
• wherein the drug delivery device is detachably connectable to the medical device via the at least one interface portion,
• wherein the drug delivery device is configured to receive the at least one drug from the medical device into the at least one drug container,
• wherein the fluid guide system and the at least one drug container are replaceable,
• wherein the at least one drug container comprises at least one flexible portion or movable portion which defines at least a portion of at least one reservoir within the at least one drug container,
• wherein the drug delivery device is configured to receive mechanical energy from the medical device,
• wherein the drug delivery device comprises a storage element or is configured to comprise a storage element,
• wherein the storage element is configured to store the mechanical energy, and
• wherein the mechanical energy is generated in the medical device (1) by an electrically driven pump that transfers the at least one drug, or (2) by an electric motor that transfers the mechanical energy without using pressure of the at least on drug,
• wherein the method comprises:
• connecting the drug delivery device and the medical device via the at least one interface portion,
• after connecting, transferring the at least one drug from the medical device to the drug delivery device via the at least one inflow port of the at least one interface portion, and
• after transferring, detaching the drug delivery device from the medical device for delivery of the at least one drug.

A method of delivering at least one drug from a drug delivery device, wherein the drug delivery device comprises:

• a case,
• at least one interface portion being part of an interface to a medical device,
• a retaining space within the case, the retaining space comprising a fluid guide system,
• wherein the case comprises at least one drug container,
• wherein the at least one interface portion of the drug delivery device comprises at least one inflow port of the fluid guide system of the drug delivery device,
• wherein the fluid guide system is fluidically coupled to the at least one drug container,
• wherein the drug delivery device is detachably connectable to the medical device via the at least one interface portion,
• wherein the drug delivery device is configured to receive the at least one drug from the medical device into the at least one drug container,
• wherein the at least one drug is a reconstituted drug which is reconstituted in the medical device by mixing of a diluent and at least one lyophilized drug of the at least one drug,
• wherein the fluid guide system and the at least one drug container are replaceable,
• wherein the at least one drug container comprises at least one flexible portion or movable portion which defines at least a portion of at least one reservoir within the at least one drug container,
• wherein the drug delivery device is configured to receive mechanical energy from the medical device,
• wherein the drug delivery device comprises a storage element or is configured to comprise a storage element,
• wherein the storage element is configured to store the mechanical energy,
• wherein the mechanical energy is generated in the medical device (1) by an electrically driven pump that transfers the at least one drug or (2) by an electric motor that transfers the mechanical energy without using pressure of the at least one drug, and wherein the method comprises:
• connecting the drug delivery device and the medical device via the at least one interface portion,
• after connecting, transferring the at least one drug from the medical device to the drug delivery device via the at least one inflow port of at least one interface portion,
• after transferring, detaching the drug delivery device from the medical device, and
• after detaching, using the stored mechanical energy for delivering of the at least one drug.