Duphar International Research Bv

Jan W Mijers

Gillis P Van Der Wal

Johannes E Steenhuisen

The invention relates to a device for taking liquid from a reservoir by inward suction with simultaneous filtration, comprising a flexible tube having at one end a filtering unit, which can be immersed in the liquid through an opening in the reservoir, and having a mouthpiece at its other end. The mouthpiece is connected to the tube in a sealing manner via a flexible hollow member which forms an internal connection between tube and mouthpiece, and before use of the device the mouthpiece may be enveloped hygienically by a detachable protective cap.

Device for inward suction of liquid

The invention relates to an automatic injection device comprising an assembly of a discharge mechanism, a cartridge holder of synthetic material and a cartridge which is slidably accommodated in the cartridge holder. The cartridge includes a glass ampoule, if desired, enveloped by a sheath of shrinkable sheet, the ampoule consisting of an ampoule cylinder in which an injection liquid or various injection liquids separated from each other by stoppers and a piston which can be moved in the ampoule cylinder are provided. The assembly also includes a connection means for an injection needle in which or to which the injection needle, if desired, covered by a guard to maintain the needle in a sterile condition, is connected, and a shoulder between the ampoule cylinder and the needle connection means. The cartridge holder consists of a sleeve-like rear portion which is open at each end and which, after actuating the injection device, is traversed by the ampoule cylinder and the inner surface of which has substantially the same transverse dimensions over the whole length, and a front portion which forms one assembly with the sleeve-like portion and, after actuating the syringe, serves to discontinue the forward movement of the cartridge in the holder and to allow passage of the needle. The sleeve-like portion of the cartridge holder has a five-sided to fourteen-sided cross-section over a length which is at least equal to the length of the ampoule cylinder and is proportioned such that the ampoule cylinder engages the inner side surfaces of the sleeve-like portion with friction. The invention furthermore relates to a cartridge holder for the injection device.

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Olst, Netherlands

Jan W Mijers