| 摘要 |
Surgical device ( 1 ) is used fir in minimally invasive surgery using an inflated body cavity ( 2 ) accessible to a surgeon through an access port defined by a sleeve ( 4 ) passing through an incision in a patient's abdominal wall ( 3 ). The device is held in position by a distal ring ( 5 ) and a proximal ring ( 6 ). The device ( 1 ) is sealed by cuff valve ( 8 ), self sealing valve ( 18 ), spring valve ( 28 ) or snap open/snap shut valve ( 38 ).
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