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  • Trocars designed to puncture the abdominal wall in order to provide access to the gallbladder. These instruments typically consist of a manual, handheld device with a sharp pyramidal or conical strong and solid pointed rod and a proximal large handle. Gallbladder trocars are usually fitted into a cannula, or sleeve; the trocar is used to pierce the skin and the abdominal wall (i.e., percutaneously) reaching the gallbladder and then removed, leaving the cannula and the aspiration tube in place. The cannula usually includes a lateral secondary tube (e.g., Ochsner trocar) for external aspiration. Gallbladder trocars are intended to provide access to the gall bladder, permit the aspiration of fluids, and/or to instill medications or solutions. They are used for diagnostic procedures or to empty an enlarged bladder prior to surgery.
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