Abstract: A device suited for dispensing a dental substance comprises a cartridge 20 or receiving the substance, with a curved dispensing nozzle 22 disposed at the front end and a flange 21 of octagonal cross-section provided at the rear end of the cartridge. The flange 21 serves to engage a slide-in socket 16 of an applicator 10 which includes a piston rod 12 for advancing a dispensing piston 23 disposed in the cartridge 20. In the retracted position of the piston rod 12, the cartridge 20 may be laterally inserted into the slide-in socket 16 of the applicator 10. The socket has two parallel walls spaced by a distance which is between the largest and the smallest diameter of the octagonal flange 21.

Abstract: A shaped article, specifically an artificial tooth, is made of two parts. individually shaped first part 18, specifically the head part or superstructure of the artificial tooth, has a standardized locking portion 26 for engagement with a standardized counter-locking portion 24 provided on a pre-fabricated second part 16, specifically the shaft part of the tooth to be implanted in a patient's jaw. The individually shaped part 18 is manufactured by using a pre-fabricated sonotrode 38 for producing the configuration of the locking portion 26 and one or more individually produced shaping sonotrodes 44 are used for generating the parts of the surface other than the locking portion 26. This permits the individually shaped part to be produced in an economic way yet with high precision of the locking portion.

Abstract: The container herein described protects a sterile capsule containing predrmined amounts of a multi-component curable material (such as bone cement) against contamination. The container allows externally applied pressure to be transmitted to the capsule. The material components contained in the capsule are thereby brought into contact and may be mixed in an oscillating mixer. Even when the mixer is not operated in a sterile environment, the capsule remains sterile, which is essential for use such as in an operating room.For transmitting the pressure required for actuating the capsule, the container consists of two shell portions 1 and 2 which can be moved against each other by application of external compression forces. When the container is opened, the capsule is protected by means of a ring 3 or apron against contacting non-sterile container surfaces.

Abstract: The container includes a film tube 11 for flowable substances. The film t is opened and placed in a cylindrical housing 31 between a cap 33 and a movable piston 32. At the end facing the cap 33, the tube 11 is provided with a ring 20 which has a conical sealing surface 21. When the piston 32 is advanced to dispense the content of the tube 11, the sealing surface 21 is forced against a complementary conical counter surface 35 formed in the cap 33 and surrounding an outlet. The content of the tube 11 is thus prevented from reaching the inner wall of the housing.

Abstract: An apparatus for mixing and dispensing two-component substances comprises o cartridges 12, 13 with pistons 15, 16 which are displaceable in the cartridges and are advanced in common by an electrical motor via a magnetic clutch 30. When the motor is switched off and the clutch 30 disengaged, the pistons 15, 16 may be manually retracted and re-advanced by means of a handwheel 33. At the end of the manual retracting motion, the pistons 15, 16 entrain a shaft 18 which serves to drive a mixer head 14, so that when the pistons 15, 16 become free of the cartridges 12, 13, the shaft 18 disengages from the mixer head 14. The cartridges 12, 13 including the mixer head 14 connected thereto may then be removed as a unit from the apparatus and replaced by another unit in order to exchange the emptied cartridges or, with the cartridges being still filled partially, to use the apparatus for preparing a different substance.

Abstract: A pressure vessel includes a body 10 and a cover 12. An O-ring 20 surroung the upper opening 11 of the vessel body 10 cooperates with a diaphragm 21 sealingly inserted in the cover 12. The diaphragm 21 extends beyond the O-ring 20 in the radial direction inside the cover 12. When the vessel is pressurized, a pressure difference acts on the diaphragm 21 to press an annular plate 23 driven by the diaphragm 21 against the O-ring 20, while the cover 12 is secured by a bayonet locking 24, 25 against being lifted off the vessel body. The pressure inside the vessel is thus used to produce the sealing force. In the unpressurized condition, the cover 12 may be easily placed on the vessel body 10 without effort, and rotation about a small angle is sufficient for securing the cover. In case the bayonet locking has not been completely closed, pressure applied to the vessel will lift the cover 12 by a certain amount, thereby automatically releasing the seal.

Abstract: A granules syringe, particularly for impregnating granules of a bone cement with blood and for dispensing the impregnated granules, includes a transparent tubular barrel for receiving the granules between a porous front cover and a porous plug. A piston which is separate from the plug and has an integrated seal is disposed behind the plug. When the piston is retracted, the seal is closed so that the vacuum is generated to suck the blood through the porous cover into the granules. When the piston is subsequently advanced, the seal opens so that air has been removed from the granules and passed through the porous plug is permitted to escape rewardly. Upon removal of the cover, the plug is then advanced by the piston to dispense the impregnated granules.

Abstract: A container for preparing a substance mixed from components which are inilly separated comprises two chambers (54, 56) separated from each other by a partitioning structure (52). One chamber (54) holds a liquid component and is closed by a sheet (53) of plastics material, and the other chamber (56) holds a powdery component and forms a mixing chamber. An actuating member (58) is movably disposed within the partitioning structure (52). The actuating member (58) includes a seal (64, 66) which is locked in the rest and storage position of the container and is released when the actuating member is moved into its actuated position in which the sheet (53) is perforated. In the actuated position, the seal (64, 66) functions as a valve to permit the liquid component to enter the mixing chamber (56) while preventing parts of the mixture or components thereof from flowing back from the mixing chamber (56) into the first chamber (54).