Importance

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Abstract

The invention lies in the domain of medical technology and relates to a method and devices, which permit a patient to control and dose the administration of a liquid medicament from a container via a tube (4) and a catheter into the vascular system, by regulating the rate of flow of the medicament by means of a variable clamping of the tube ranging from a total block to a complete release and/or by regulating specific flow periods. To achieve this, a dosing element, preferably in the form of a mechanical rocker control switch (3), comprising a rocker (10) is put onto the tube (4), whereby the rocker (10) pivots about the rocker axis (13) pressing against the tube with its longitudinal end, by means of an adjusting coil spring (9), the flow cross-section of the tube (4) is regulated by an adjusting screw (8) on the adjusting coil spring (9) and the medicament flow through the tube (4) can also be regulated by a manually operated trigger switch (11). An electronically controlled, electrically driven radial motor (16) can be used as the dosing element in place of the rocker switch (3), said motor acting on the tube (4) and regulating the flow cross-section of the latter by means of a clamping lever (19) comprising a nose-shaped clamp (20). The method and devices for carrying out said method are illustrated by the accompanying figures.

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First Claim