ROTARY VALVE BODY FOR BONE CEMENT DISPENSING DEVICE

The invention relates to a rotary valve body for a bone cement dispensing device that can be arranged in rotatable manner in a matching valve seat in the dispensing device, whereby the rotary valve body is rotationally symmetrical about the rotation axis of the rotary valve body at least within a region intended for the valve seat, and in that at least one sealing cam made of an elastic plastic material is arranged on the rotationally symmetrical jacket surface of said region and is raised above the radius of the rotationally symmetrical jacket surface such that the sealing cam renders the circumference of the rotary valve body larger than the internal diameter of the valve seat, and whereby at least one feed-through is arranged in the rotary valve body and extends from a first opening in the rotationally symmetrical jacket surface of the rotary valve body in the region of the sealing cam into a second opening in the rotationally symmetrical jacket surface of the rotary valve body. The invention also relates to a valve system comprising a rotary valve body of this type and a valve seat, in which the rotary valve body is supported like in a bearing such that it can rotate, whereby the sealing cam or sealing cams of the rotary valve body are compressed by the valve seat. And lastly, the invention also relates to a medical dispensing device for single-use, in particular pressurised gas-driven medical bone cement dispensing device, spraying device or vacuum-generating device having a valve system of this type for regulating the gas flow. Linvention concerne un corps de soupape tournante pour un dispositif de distribution de ciment osseux qui peut être placé de manière rotative dans un siège de soupape correspondante dans le dispositif de distribution, alors que le corps de soupape tournante est symétrique en rotation autour de laxe de rotation du corps de soupape tournante au moins à lintérieur dune région prévue pour le siège de soupape, et quau moins une came détanchéité fabriquée à partir dun matériau en plastique élastique est placée sur la surface denveloppe symétrique en rotation de ladite région et est soulevée au-dessus du rayon de la surface denveloppe symétrique en rotation de sorte que la came détanchéité rend la circonférence du corps de soupape tournante plus large que le diamètre interne du siège de soupape, et par lequel au moins une traversée est placée dans le corps de soupape tournante et se prolonge à partir dune première ouverture dans la s