In Vitro Hemolysis Test and Durability Test of Magnetic and Hydrodynamic Levitation Blood Pump
ZHANG Wen
ZHANG Jiemin
LIU Tianwen
LIU Xiaocheng
Abstract：To study the hemolytic performance and durability of magnetic and hydrodynamic levitation blood pump by using vitro circulation loop system.The vitro circulation loop system was established.In vitro hemolysis test,the fresh sheep blood was collected as the circulating medium ,the speed of blood pump was adjusted to 2 900 rmp,the preload and afterload were set at 15,100 mmHg,plas-ma free hemoglobin(FHB)and hematokrit(Hct)were detected,then the normalized index of hemolysis (NIH)was calculated.In the durabilyt test,all the materials and environment settings were as same as them in vitro hemolysis test except the medium replaced by glycerin water.The blood pump had operated for 90 d continuoustly and recorded its performance.In vitro hemolysis test,the NIH was (0.0038 ±0.0008)g/100L.In durability test,the blood pump operated smoothly and stably without being stucked and shut down.The magnetic and hydrodynamic levitation blood pump has good hemolytic performance and stable mechanical property that can meet the need for animal experiments.
Keywords：Blood pumpMagnetic and hydrodynamic levitationHeart failureIn vitroHemolysis testNormalized index of hemol-ysis(NIH)
Publication Date：2014-01-01
Online Publishing Date：2026-09-11(First online date of this platform, not the publication date of the document)
Pages：4( 15-18 )