<論文>心臓内埋込軸流型血液ポンプのIn Vitro特性

概要

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The intracardiac axial flow pump has heen developed. This device has several advantages; it fits well anatomically, its blood-contacting surface is small, and it is implanted as easily as an artificial heart valve replacement. The axial flow pump consists of an impeller and a motor, both of which are encased in a housing. Two impellers with 4 vanes and 6 vanes are used. Sealing of the motor shaft is achieved by means of a ferrofluidic seal. A flow of 5L/min was obtained at a differential pressure of 100 mmHg with a motor speed of 7091 rpm with the 4-vane impeller and 6402 rpm with the 6-vane impeller. Sealing was kept against a pressure of 150 mmHg at 7000 rpm over 24 hours. The index of hemolysis was 0.056 with the 4-vane impeller and 0.214 with the 6-vane impeller. The intracardiac axial flow pump is a very promising circulatory support.
北海道東海大学の論文
1995-03-25