#$%^&*AU2011250675B220140320.pdf#####ABSTRACT An insufflation gas warmer and humidifier apparatus comprising: an inlet arranged to 5 receive insufflation gas; an outlet; a passage having at least one channel winding throughout an interior of the passage and connected to the outlet; a warmer connected to the passage and including a permeable envelope containing a chemically reactive agent and a surface arranged to transfer heat to the passage; a holding member housing the passage and the warmer, the holding member 10 comprising an opening dimensioned to receive a trocar cannula therethrough; and a humidifying reservoir connected to the passage. (Figure 25)25/25 60 61 167 101d 101d 151d 151d 200d ' 200d 245d 245d FIG. 23