Rotary blood pump and control system therefor

   
   

A pump assembly and estimation and control system therefor, the pump adapted for continuous flow pumping of blood. In a particular form, the pump is a centrifugal pump wherein the impeller is entirely sealed within the pump housing and is exclusively hydrodynamically suspended therein against movement in three translational and two rotational degrees of freedom as the impeller rotates within the fluid urged by electromagnetic means external to the pump cavity. Hydrodynamic suspension is assisted by the impeller having deformities therein such as blades with surfaces tapered from the leading edges to the trailing edges of bottom and top surfaces thereof.

Um conjunto da bomba e o estimation e o sistema de controle therefor, a bomba adaptaram-se para bombear contínuo do fluxo do sangue. Em um formulário particular, a bomba é uma bomba centrífuga wherein o impulsor é selado inteiramente dentro da carcaça da bomba e exclusivamente suspendido hydrodynamically nisso de encontro ao movimento em três translational e dois graus de liberdade rotatórios porque o impulsor gira dentro do líquido incitado pelos meios eletromagnéticos externos à cavidade da bomba. A suspensão hydrodynamic é ajudada pelo impulsor que tem deformities nisso como as lâminas com as superfícies afiladas das bordas principais às bordas arrastando das superfícies inferiores e superiores disso.

 
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