DRIVE SHAFT DESIGN, CONDITIONING AND STABILIZATION METHODS FOR ROTATIONAL MEDICAL DEVICES

A flexible drive shaft assembly is provided for an intravascular medical device, for example and without limitation, a blood pump, a rotational atherectomy device, or a rotational thrombectomy device. The blood pump embodiment provides an electric motor and a rotational impeller, with a rotational d...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	HASELMAN, Benjamin D, HANSON, Matthew W, VAN DE MOORTELE, Tristan A
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BEARINGS BLASTING DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HUMAN NECESSITIES HYGIENE LIGHTING MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A flexible drive shaft assembly is provided for an intravascular medical device, for example and without limitation, a blood pump, a rotational atherectomy device, or a rotational thrombectomy device. The blood pump embodiment provides an electric motor and a rotational impeller, with a rotational drive shaft disposed therebetween and configured to rotationally drive the impeller. The drive shaft is moved from an undeformed length to a deformed length when connected between the electric motor and the rotational impeller to provide a biasing force on the rotational impeller in the proximal direction to maintain the impeller in a desired axial or linear location. In other embodiments, drive shaft comprises a proximal section with a length and a spring constant and a distal section of relatively longer length and a relatively higher spring constant. In other embodiments, hypotube(s) and/or support mandrel(s) may be provided.