Abstract: A cannula adapter for converting a trocar insufflator into a two-phase or two-mode insufflation system. In the needle insufflation mode the insufflation gas flows through a trocar cannula, a cannula adapter and an insufflation needle before entering a body cavity and in the trocar insufflation mode gas flows directly into the body cavity from the trocar cannula. The cannula adapter although sealingly attachable to the trocar cannula during the needle insufflation mode is removable therefrom for a seamless transfer between the needle insufflation mode and the trocar insufflation mode.

Abstract: A method for facilitating the listing in an ad of items within an electronic catalog of an online ad repository, comprising a process of providing an item category tree, which contains a plurality of nodes arranged in a plurality of levels, wherein the plurality of nodes are made up of distal nodes to represent items of the catalog and non-distal nodes to represent categories of items, and presenting successive non-distal nodes for selection until a user places the ad according to item categories and subcategories that represent characteristics of the item for sale.