Procedure for the perfusion of cavities in objects and device for executing the procedure

An apparatus for the perfusion of body cavities with a fluid, comprising:

• a dispenser reservoir;
• a perfusion line connected to said reservoir;
• a medical instrument connected to said perfusion line at an opposite end from said dispenser reservoir;
• pump means connected to said perfusion line;
• a pressure sensor connected to said perfusion line between said pump means and said medical instrument;
• and
• control means, connected to said pump means and connected to said pressure sensor for determining the pressure P.sub.GEM sensed by the pressure sensor, for determining the volumetric flow of the fluid V, or determining the conductance of the fluid line between the pressure sensor and the medical instrument and determining the conductance of the medical instrument to determine an overall conductance value G, for determining the actual fluid pressure in the body cavity P.sub.IST based on the pressure sensed P.sub.GEM, the volumetric rate of flow V and the overall conductance G and for maintaining the pressure P.sub.IST equal to a present value P.sub.SOLL through continuous adjustment of the volumetric rate of flow V of the pump based on the conductance G.