GRAVITY INFUSION SET FOR MEDICAL INFUSIONS

摘要

A gravity infusion set for medical infusions having a drip chamber which by means of a hollow spike can be connected to a bottle containing the infusion liquid. A flexible line with one end is connected to the drip chamber and includes at its other end a coupling device for the infusion needle. Between the drip chamber and the coupling device in the flexible line there is provided a pressure compensator which includes at least one inlet and at least one outlet for the infusion liquid and which dependent on variations of the hydrostatic pressure at the inlet maintains the chosen flow rate at the outlet constant. The pressure compensator includes a compensator chamber having the inlet and the outlet. Between the inlet and the outlet there is provided a thin diaphragm being tensioned and clamped basically over the entire cross section of the housing, wherein a lateral bypass-opening is provided connecting the top side of the diaphragm with the bottom side thereof. The diaphragm adjusts the flow path during variations of the hydrostatic pressure existing on the side of the inlet in such a way that the flow rate on the side of the outlet remains constant.