| 摘要 |
The disclosure includes systems for performing surgery. In a first aspect, the system includes a trocar (100) having in a nested configuration, an outer cannula (110), an inner cannula (120) disposed within the outer cannula, the inner cannula defining the central longitudinal lumen (106) at least in part to provide access through the trocar, a tube center component (180) disposed within the outer cannula, and a ring jet assembly (190) disposed within the outer cannula. In a further aspect, the system includes an instrument guide (300) disposed in the central longitudinal lumen (106) of the trocar. The instrument guide has a proximal end (302), a distal end (304), and a plurality of channels (306a-306d) defined through the instrument guide from the proximal end (302) to the distal end (304), each channel being adapted and configured to receive a surgical instrument. |
