I have been doing laparoscopy since 1972. Have use verrres needle with hanging drop technique without any problems. The trocar must be sharp. that why I use disposables. The guards do not prevent injury. Your Technique does. We are starting trials of reusable, respossable trocars to see if we can get the sharpness we need and save costs. For thos cases with large abdominal scars/ I use the hasson Open Procedure. This has prevented trouble. Do what technique you feel most comfotable with. What is good for me may not be good for you. Myer S. Bornstein. M.D. FACOG