Hamilton Bailey's Intravenous Cannula This is a gold intravenous cannula designed by British surgeon H. Hamilton Bailey (1894-1961). This instrument was used to introduce air, fluid, or a device into a body cavity. The cannula features a luer lock plug and lateral fenestrated wings, along with a curved shaft that has two lateral fenestrations at its end. Hamilton described the cannula as follows: ‘Cannula for venoclysis. It is gold-plated to prevent corrosion. There are two lateral holes in addition to the terminal opening. The collar allows the straight portion of the cannula to be tied snugly into the vein. The sloping neck can be bent to any angle suitable for varying depths of subcutaneous fat in individual cases. The perforations in the wings permit anchoring the apparatus to the skin by means of sutures.’ 1900-1949