Single-puncture haemodialysis system for renal insufficiency patient - has single pump, expansion chamber with apical air pressure and infusion connections, pressure gauge, and control alternately reversing pump

摘要

The system is intended for treating renal insufficiency using an artificial kidney with one side connected, via a pump and a catheter, with the blood stream of the patient whilst the other side connects to a closed expansion chamber with an apical air pressure line and, a few millimetres lower, to an infusion line. This line permits preliminary rinsing-out of the kidney, administering medication, and adapting blood level by air injection, whereby pressure fluctuations in the chamber or in a compliance chamber are indicated on a pressure gauge. - The feeding of a pre-determd. vol. of (arterial) blood to the chamber via the artificial kidney and also the return of the purified blood to the bloodstream are effected alternately through the same system using a reversible pump of which the operation is automatically controlled by a measuring and control unit.