| 摘要 |
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 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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