Abstract: The invention relates to a thermal combustion engine which converts thermal energy into mechanical energy, comprising at least one vapour producing device which at least partially vaporises a first liquid working medium by means of thermal energy supplied to the combustion engine, at least one rotor which can be driven by means of a vaporised first working medium in order to produce mechanical energy and rotated with respect to at least one stator around a first rotational axis, and at least one condensation device for condensation of the vaporised first working medium after the rotor has been driven. The rotor surrounds the stator in an essentially complete manner. The invention also relates to the use of the inventive thermal combustion engine.

Abstract: Blood pump comprising an inlet valve, an outlet valve, and a displacement chamber being portions of a common flexible tubing being squeezable between fixed wall means and two spaced, movable valve plungers and a displacement plunger arranged on the portion of the tubing therebetween, wherein the valve plungers in the flow direction of the tubing have a dimension exceeding 5 mm and that in the tubing, with the valve plungers in closed position, a slot is left with a height less than 0.5 mm.