Protective Barrier and Negative Pressure Chamber
We constructed a chamber around the patients head which consisted of a
transparent plastic film used to cover a patient’s head. The plastic
film was a 112 cm x 112 cm fluid warmer drape (Ecolab; St. Paul, MN)
placed over a Lone Star disposable ring retractor (Cooper Surgical;
Product #3308; Trumbull, CT) that was suspended by a Bookwalter
Retractor Laparoscopic Support Set (Symmetry Surgical; Product
#50-5730; Nashville, TN) (Figure 1A). A space between the patients head
and the barrier was created to prevent the drape from being pulled into
the suction port (Figure 1B). Non-penetrating towel clamps were used to
secure the plastic film to the Lone Star and the bed to keep the drape
taught over the surgical field. Fenestrations were created in the
plastic barrier drape to allow passage of instruments for either an
endonasal or endo-oral procedure (Figure 1C). These materials were
readily available at our institution and are likely used by most general
surgeons performing laparoscopic abdominal surgery.