| 摘要 |
<p>ACCESS APPARATUS INCLUDING INTEGRAL ZERO-CLOSURE VALVE AND CHECK VALVE Abstract An access apparatus (10) for use in surgical procedures is provided. The access 5 apparatus includes a zero-closure valve (20) disposed within a housing (2) associated with the access apparatus and adjacent a longitudinal passage (14) defined by an access member (4) operably associated with the access apparatus. The zero-closure valve is configured to provide a substantially fluid-tight seal in the absence of the surgical instrument inserted therethrough. A check-valve (22) is operably associated with the 1o zero-closure valve and is in fluid communication with the longitudinal passage and an insufflation port operably associated with the access member. The check-valve is configured to provide a fluid-tight seal when a pressure inside the access apparatus is greater than a pressure external thereof. "A"l 29--- -- "H" 23-----------------20 2 26) 19 1 t PRESSURIZED</p> |
