Hydro-and hemodynamic effects of catheterization of vessels. I. An experimental model.

A mechanical model for experiments on the influence on pressure and volumetric flow rate arising from catheterization is described. It is possible under controlled conditions to determine the static and dynamic pressure together with the volumetric flow rate as a function of flow type, repetition frequency, shape and amplitude of pressure surges in pulsatile flow, peripheral resistance, geometry and dimensions of a stenosis or a catheter, and physical properties of the vessel wall materials and of the fluid employed.