Abstract: It is described an instrument feeder device (201) for use in an endoscope system, for feeding a medical instrument (202) into a body or withdrawing the medical instrument from the body, the instrument feeding device comprising: a connector (302) for connecting the instrument feeding device (201) to a motor 5 (203) for moving the medical instrument (202) through the instrument feeding device (201); a drive wheel (303) arranged to be rotated by the motor, wherein the drive wheel (303) is positioned on one side of the medical instrument (202), an idler wheel (310) positioned on an opposite side of the medical instrument 10 relative the drive wheel (303), a clutch mechanism adapted to push the idler wheel (310) against the medical instrument (202), the clutch mechanism including a rotary button (1012) connected to a spindle (1111), the spindle including a main part (1111b) and an eccentric part (1111a) which is arranged offset relative a centre line through the main part, 15 wherein the idler wheel is rotatable m

Abstract: A tube for mixing, diluting and preserving a sample includes a hollow first container for receiving and storing a solution, the first container having first and second ends, wherein at least the first end has a through-hole, and a transport-pin located in the through-hole of the first end having a shape closely matching to the through-hole, the transport-pin including a recess with a predetermined size. The recess is suitable to be filled by a sample, wherein the transport-pin is movable between an initial position in which the recess is positioned at least partially on the outer side of the first container, and an end position in which the recess is positioned at least partially on the inner side of the first container.

Abstract: A tube for extracting, diluting and discharging a sample: able to control the amount of discharged diluted solution in the tube, after the sample has been diluted; that improves the hygienic conditions of discharging the sample; that enables introduction of a predetermined amount of a sample in any liquid or solid state; and that is able to transfer a specific amount of a diluted sample into another tube for further processing without any hygienic problems and with no risk of accidents.