| 摘要 |
OPTICAL OBTURATOR An optical obturator (14) for penetrating tissue and being at least partially positionable within a cannula assembly (12). The obturator (14) may include an obturator housing (38) at a proximal end of the obturator (14) and may be configured to be grasped by a user. The obturator housing (38) may define an opening for receiving an endoscope, the obturator housing (38) including an endoscope retention mechanism (205) adapted for securing and stabilizing an endoscope inserted therethrough. The obturator housing (38) may also include at least one attachment mechanism (383) for enabling selective attachment and detachment of the obturator housing (38) to the cannula assembly (12). The obturator (14) may also include an obturator shaft (40) integrally formed with the obturator housing (38). The obturator shaft (40) may define a hollow interior (403) configured to receive the endoscope inserted through the opening (382). A penetrating member (2) is disposed at the distal end (402) of the obturator shaft (40). The obturator (14) may be formed as a single component, preferably from transparent material. 12-/- 36 24 |
