CARDIAC VALVE DELIVERY CATHETER AND DELIVERY SYSTEM

Disclosed are a delivery catheter (10) capable of retrieving a valve and a delivery system including the delivery catheter (10). The delivery catheter (10) includes an outer tube assembly (12) and an inner tube assembly (11). The outer tube assembly (12) includes a stent segment sheath (121) capable...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: GUI, Baozhu, CHEN, Guoming, LIU, Ming, LI, Yu, LI, Longfei, LIU, Shihong
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Disclosed are a delivery catheter (10) capable of retrieving a valve and a delivery system including the delivery catheter (10). The delivery catheter (10) includes an outer tube assembly (12) and an inner tube assembly (11). The outer tube assembly (12) includes a stent segment sheath (121) capable of accommodating a valve (30) and a delivery segment outer tube (122) connected to a proximal end of the stent segment sheath (121). The inner tube assembly (11) is disposed in a cavity of the outer tube assembly (12), so that the inner tube assembly (11) is axially movable relative to the outer tube assembly (12). The delivery segment outer tube (122) includes a polymer tube (1221) and a hollow tubular structure (1222) disposed in the polymer tube (1221). The stent segment sheath (121) includes a metal reinforced sheath (1211), so that the stent segment sheath (121) can more easily pass through multi-direction curved pathways and has a good compressive property. In addition, a plastically deformable wave structure is disposed in a distal end of the delivery segment outer tube (122), and can retain a particular curved shape after entering the ascending aorta, as a result, coaxiality between the stent segment sheath (121) and an annulus in the ascending aorta can be adjusted, to ensure deploy effect of the valve (30), therefore repeatable retrieval and deploy of the valve (30) in the human body can be achieved without affecting the effect in deploy of the valve (30).