Abstract: A medical injection device has a syringe. The syringe has a container for the medium to be injected and an injection cannula, which communicates with the container. A needle guard of the injection device can be moved between an injection position and a safe position. In the injection position, the injection cannula can be uncovered in order to inject the medium. In the safe position, a cannula tip of the injection cannula is recessed in a protective component of the needle guard. A securing device securely fixes the protective component in the safe position. The result is an injection device having a needle guard that can be manipulated intuitively and operated safely.

Abstract: A syringe adapter is used for connecting a dosing syringe to a container in order to take up a fluid. The syringe adapter has a fluid delivery channel for creating a flow connection between the inside of the container and the inside of the dosing syringe. At least one ventilation channel of the syringe adapter is used for creating an air connection between the inside of the container and the container surroundings. In at least one of the channels a non-return valve is arranged, which allows the passage of media in an open position and in a closed position closes the channel. This results in a syringe adapter which has improved handing and in particular provides sufficient dosing precision.

Abstract: A medical injection device has an injection unit and an anti-rotation device. Said anti-rotation device is non-rotationally connected to a port and connection portion of the injection device so as to surround the outside thereof in the manner of a sleeve. As a result, an intuitively usable and operationally safe injection device is obtained. When a protective cap for an injection cannula of the injection unit is being removed from the port and connection portion, an unwanted rotation of the port and connection portion relative to the container about components of a plug-in connection arranged therebetween is safely prevented.

Abstract: A syringe adapter is used for connecting a dosing syringe to a container in order to take up a fluid. The syringe adapter has a fluid delivery channel for creating a flow connection between the inside of the container and the inside of the dosing syringe. At least one ventilation channel of the syringe adapter is used for creating an air connection between the inside of the container and the container surroundings. In at least one of the channels a non-return valve is arranged, which allows the passage of media in an open position and in a closed position closes the channel. This results in a syringe adapter which has improved handing and in particular provides sufficient dosing precision.

Abstract: A medical injection device has an injection unit and an anti-rotation device. Said anti-rotation device is non-rotationally connected to a port and connection portion of the injection device so as to surround the outside thereof in the manner of a sleeve. As a result, an intuitively usable and operationally safe injection device is obtained. When a protective cap for an injection cannula of the injection unit is being removed from the port and connection portion, an unwanted rotation of the port and connection portion relative to the container about components of a plug-in connection arranged therebetween is safely prevented.

Abstract: A medical injection device has a syringe. The syringe has a container for the medium to be injected and an injection cannula, which communicates with the container. A needle guard of the injection device can be moved between an injection position and a safe position. In the injection position, the injection cannula can be uncovered in order to inject the medium. In the safe position, a cannula tip of the injection cannula is recessed in a protective component of the needle guard. A securing device securely fixes the protective component in the safe position. The result is an injection device having a needle guard that can be manipulated intuitively and operated safely.