Abstract: The invention relates to an automatic two-chamber injector for mixing and injecting a medical solution. The injector comprises a barrel (11) having a first end with a receiving portion (15) for an injection needle (17), said portion being sealed prior to use, and a second end with a displaceable plunger (27). The barrel (11) comprises two chambers (29, 30) separated by a migrationproof membrane (28), said membrane (28) being adapted to rupture when the plunger (27) is displaced towards the first end of the barrel (11).The invention also related to a method for mixing and injecting a solution by means of an automatic two-chamber injector and to a cartridge for a two-chamber injector.

Abstract: Valve-provided tube connecting device to connection with a liquid line intended to be connected to a patient, preferably for draining of body liquids. Said connection device consists of a drip chamber house, a connecting house containing a spring loaded valve body, which connecting house is designed to connection with a connector. The valve body consists of a conical upper sealing part, a guide part and a solid, conical lower sealing part. The device attained a closed system, which decreases the risk of bacteria infections and spillage.

Abstract: A head assembly for a vein stripping instrument is described comprising a head lockable over an enlarged portion of a vein stripper cable by means of a snap mechanism and a cap.