VENTRICULAR ASSIST DEVICE WITH IMPELLER-STABILIZING SPRING

Apparatus and methods are described including a ventricular assist device that includes an axial shaft and an impeller disposed on the axial shaft, the impeller being configured to pump blood. A frame is disposed around the impeller. The distal end of the axial shaft is configured to engage with a d...

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Bibliographische Detailangaben
Hauptverfasser: Friedland, Ori, Rosenblum, Daniel, Tuval, Yosi, Lubinsky, Gad, Troshin, Victor, Zemer Harel, Hagit, Rozenfeld, Avi
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Apparatus and methods are described including a ventricular assist device that includes an axial shaft and an impeller disposed on the axial shaft, the impeller being configured to pump blood. A frame is disposed around the impeller. The distal end of the axial shaft is configured to engage with a distal thrust bearing such as to prevent the axial shaft from undergoing axial motion in response to variations in the pressure gradient against which the impeller pumps blood. An impeller-stabilizing spring is disposed around the axial shaft between a distal end of the impeller and the thrust bearing, the impeller-stabilizing spring being configured to stabilize the distal end of the impeller. Other applications are also described.