Inhalation therapy unit with valve for limiting the...

Details Inhalation therapy unit with valve for limiting the... Inhalation therapy unit with valve for limiting the...

A - Human Necessities

61

M

A61M 15/00 (2006.01)

Patent

CA 2244707

A limiting valve (4) is provided in an inhalation therapy unit with a valve member (13) which closes an air through opening (12) in the idle state and corresponding to the pressure difference occurring over the valve opens same substantially proportionally up to a threshold value. If the threshold value is exceeded, the valve member (13) abuts against a limiting member (16) which limits the movement of the valve member (13) and the air passage orifices (17) of which are partially closed by the valve member (13) so that air can only flow through the air passage auxiliary orifices remaining free. In this manner the patient using the inhalation therapy unit is urged to breath in the range below the threshold value, as his respiration above the threshold value is opposed by a considerably higher resistance.

Valve régulatrice (4) pour unité d'inhalothérapie comprenant un élément de valve (13) qui ferme une ouverture d'écoulement d'air (12) en position de repos, selon la différence de pression sur la valve, et qui ouvre cette ouverture de façon essentiellement proportionnelle à la différence de pression seulement jusqu'à une valeur de seuil. Si cette valeur est dépassée, l'élément de valve (13) bute contre un élément régulateur (16) qui limite le mouvement de cette valve (13) et des orifices de passage de l'air (17) qui sont partiellement fermés par l'élément de valve (13), afin que l'air ne s'écoule que par les orifices auxiliaires de passage d'air demeurant libres. De cette façon, le patient qui utilise l'unité d'inhalothérapie est amené à respirer à un niveau sous la valeur du seuil, puisque son effort respiratoire au-dessus de cette valeur s'oppose à une résistance considérablement plus élevée.

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