| 摘要 |
A wound protector and retractor device 1 comprises a sleeve 2 , a distal member provided by a distal ring 3 of resilient material and a proximal member provided by a proximal ring 4 . The sleeve 2 is led around the ring 3 and is free to move axially relative to the distal ring 3 somewhat in the manner of a pulley. The proximal ring 4 is fixed to the sleeve 2 , in this case at the proximal inner end thereof. The sleeve 2 terminates in a handle or gripping portion which is reinforced by a gripping ring 15 . The sleeve extends from the proximal ring 4 and the distal ring 3 is contained between inner and outer layers 2 a, 2 b of the sleeve 2 . The resilient distal ring 3 is scrunched up and inserted through the incision 6 . The sleeve 2 is then pulled upwardly. On pulling of the sleeve 2 upwardly the outer layer 2 b is pulled up while the inner layer 2 a is drawn around the proximal ring 3 . This results in shortening the axial extent between the proximal ring 4 and the distal ring 3 , tensioning the sleeve and applying a retraction force to the margins of the incision 6 . As the incision is being retracted the margins are also protected by the sleeve. On retraction, an access port is provided, for example for a surgeon to insert his hand and/or an instrument to perform a procedure. The device may be used as a retractor in open surgery or as a base for a valve/seal to allow it to be used in hand assisted laparoscopic surgery or for instrument access or hand access generally.
|
