Abstract: A dental preparation cuff is used to expose a transition region (preparation margin) between a tooth neck of a prepared tooth and surrounding gums. The preparation cuff has a tooth opening to place on the tooth, having a peripheral wall with a cross-sectionally wedge-shaped, radially inwardly tapering edge region. The preparation cuff is manufactured from a material with a Shore hardness in the range between 70A and 95A. This results in a preparation cuff providing improved patient tolerability.

Abstract: An adaptation device is used for coupling at least one sensor to a tube shell wall of a tube for measuring a property of a fluid conveyed through the tube. The adaptation device has an adapter passage opening for providing a fluid connection via a tube shell wall passage opening between a tube lumen and the sensor. A sensor receptacle is used to accommodate the sensor in the region of the adapter passage opening. An adapter sealing portion extends around the adapter passage opening for circumferential sealing of the adaptation device around the adapter passage opening with respect to the tube shell wall. This results in an adaptation device which makes sensors which are basically suitable for measuring a fluid property of fluid conveyed through a tube accessible for such fluid measurement within a sensor device.

Abstract: An infusion cannula unit made of plastic has a cannula for insertion in a blood vessel. A housing of the unit has a supply line portion the line axis of which runs at an angle relative to a cannula longitudinal axis, said angle being greater than 10°. The supply line portion is in fluid communication with a lumen of the cannula. The infusion cannula unit has a one-piece design. This results in a unit which is easy to produce and in particular suitable for mass production.

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 device serves for transferring a fluid between a storage container and at least one further container for use. Said transfer device comprises a sealing section by means of which a main part of the transfer device sealingly rests on the storage container. A hollow-needle assembly comprises a hollow needle which can be moved between a retracted resting position and a deployed connecting position, the assembly, in the connecting position, providing a fluid connecting channel between the storage container and the transfer device. The hollow-needle assembly can be moved by means of a pressure actuating element. During said movement, the pressure actuating element is primarily connected to the sleeve of the hollow needle so as to be resistant to shear forces. A guiding device serves to axially guide the pressure actuating element on the main part. Said guiding device has at least one guiding pin. Said guiding pin slides in at least one associated guiding groove during movement.

Abstract: An apparatus for transferring a liquid between a storage container and at least one further use container has a storage-container sealing portion for leaktight abutment of a main body of the transfer apparatus against the storage container. A hollow-needle assembly has a hollow needle. The hollow-needle assembly can be displaced in a linear manner along a movement axis relative to the main body by means of a gear mechanism between a retracted rest position and an extended connecting position. In the latter, the hollow needle creates a liquid connecting duct between the storage container and the transfer apparatus. A connecting portion serves to connect the transfer apparatus to the use container in a leaktight manner. A rotary-actuation element is operatively connected to the hollow-needle assembly via the gear mechanism. The gear mechanism has a driver ring that is mounted in the main body axially and so as to be rotatable about the movement axis.

Abstract: A hollow-needle assembly is part of a transfer apparatus that serves for transferring a liquid between a storage container and a further use container. The hollow-needle assembly has a hollow needle having a pointed needle end. A liquid duct for transporting liquid through the hollow needle and out of the latter leads out via at least one liquid-duct opening in the region of the free needle end. An aeration gas duct that likewise leads out via a gas-duct opening in the region of the free needle end serves for transporting gas through the hollow-needle assembly. Duct paths of the at least one liquid duct and of the at least one aeration gas duct extend separately from one another. The ducts lead out adjacently to one another axially along the hollow needle and in a manner offset from one another in the circumferential direction.

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 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 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.