| 摘要 |
POSITIONING CATHETER A catheter guide assembly (70), comprising an extended working channel (80) including a proximal portion (82) adjacent a proximal end (86) and a distal portion (84) adjacent a distal end (88), the extended working channel (80) having a lumen (83) configured to enable translation of an instrument (102-108) therethrough, the extended working channel (80) defining a radius formed on the distal portion (84), wherein the distal portion (84) of the extended working channel (80) is formed of a material having a durometer rating sufficient such that deflection of the distal portion (84) is limited as an instrument is translated therethrough; a control handle (90) disposed at the proximal end (86) of the extended working channel (80) and operably coupled to the extended working channel (80), thereby enabling the extended working channel (80) to advance and rotate. |
