Keyed steerable catheter device

Devices, systems, and methods related to steerable catheters are disclosed herein. The steerable conduit (100) includes a first actuation wire, an inner conduit (120), and an outer conduit (110). The inner conduit has an outer surface defining a longitudinally extending keyway. The outer conduit has an inner surface defining a lumen and a longitudinally extending spline projecting radially inward into the outer conduit lumen. The outer catheter lumen is operable to receive the inner catheter, wherein the splines of the outer catheter are operable to keyed with the keyways of the inner catheter. The spline defines a spline lumen operable to receive the first actuation wire. 本文公开了与可转向导管有关的装置、系统和方法。可转向导管(100)包括第一致动线、内导管(120)和外导管(110)。内导管具有限定纵向延伸的键槽的外表面。外导管具有限定内腔的内表面和纵向延伸的花键，花键径向向内突出到外导管内腔中。外导管内腔可操作成接纳内导管，其中外导管的花键可操作成与内导管的键槽键接。花键限定可操作成接纳第一致动线的花键内腔。