Minimally Invasive Surgery Small incision Low risk of infection - - PDF document
Elec 331 - Minimally Invasive Surgery Minimally Invasive Surgery Small incision Low risk of infection Short recovery time CO 2 Injected by needle Integrated into instrument Uses Exploratory surgery
– Low risk of infection – Short recovery time
– Injected by needle – Integrated into instrument
– Exploratory surgery – Laparoscopic surgery – Arthroscopic surgery
Pre-Operative Post-Operative Stores bile produced by liver Releases bile into digestive tract to emulsify fat Reduced tolerance to high-fat foods after removal
Laparoscope / Arthroscope Trocar Forceps / Scissors Elevator / Retractor Stapler
Optical Fibres Lens
Camera Light Source
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Navigate Corners
Steerable (dextrous) sleeve Steering cable Spring loaded sleeve Stiff housing Drive cable Rotate to Change direction Retract to change angle
Trocar (pivot point)
– Restricted – Reversed – Scaled by distance to incision – Fixed approach angle – Far from hands
– Backlash – Flexibility – Size – 1 per incision
– Depth perception – Tactile perception – Proprioception – Visual navigation control – Peripheral vision
– Visual transformation – Head position