PULSATING PERFUSION PUMP Russian patent published in 2002 - IPC

FIELD: transfusion and circulation of blood in artificial circulation apparatus. SUBSTANCE: pump includes quick-detachable hollow housing with elastoflexible magnetosensitive working member which divides pump housing into pumping and drive chambers. Arranged in pumping chamber at rarefied gas medium are elastic blood hoses combined in flexible cassette; these hoses are flat in section and are provided with inlet and outlet channels; secured in drive chamber containing gas medium under pressure are permanent magnets evenly distributed over circumference of chamber; poles of these magnets are oriented over radial directions at alternating polarity. Located along central axis of chamber is revolving ferromagnetic sector-type rotor closing simultaneously magnetic circuits of several adjacent magnets. Electromechanical drive may be replaced, if required, by manual or pneumatic drive working from compressed gas bottle. Pulsating action of blood hoses is effected by means of traveling magnetic wave formed by revolving sector-type rotor which interacts with magnetosensitive elastoflexible working member which performs function of boundary of two zones of gas medium pressure. EFFECT: avoidance of injury of blood elements; possibility of maintaining optimal pulsating of blood and degree of filling of blood hoses. 5 cl, 4 dwg