Patent ID: 7846125

Claim:
A sprayer used in a medical procedure and having a front end, the sprayer comprising: a sprayer body on which are mounted a first liquid-containing tube containing a first liquid and a second liquid-containing tube containing a second liquid whose composition differs from a composition of the first liquid; a nozzle extending forwardly from the sprayer body, the nozzle comprising: a first inner tube connected to the liquid-containing first tube and through which is to flow the first liquid; a second inner tube connected to the liquid-containing second tube and through which is to flow the second liquid; an outer tube having an interior in which are positioned the first and second tubes, the outer tube being adapted to be connected to a gas source to supply gas to the interior of the outer tube; the outer tube comprising a front wall positioned at a front tip of the outer tube, the front wall being provided with a through opening forming a gas orifice through which the gas supplied to the interior of the outer tube is to be ejected, the gas orifice possessing an inner periphery possessing a shape; the first inner tube having a first tip end positioned in the gas orifice and possessing an outer periphery; the inner periphery of the gas orifice and the outer periphery of the first tip end being differently configured relative to one another such that the outer periphery of the first tip end and the inner periphery of the gas orifice contact one another at a plurality of circumferentially spaced apart contact points separated from one another by spaces between the outer periphery of the first tip end and the inner periphery of the gas orifice, wherein the gas orifice includes a first lumen in which the first tip end is disposed, an inner periphery of the first lumen having a polygonal cross-section, the outer periphery of the first tip end being of circular cross-section, wherein said contact points lie at equal angular intervals about a center of the first lumen, and said spaces have equal respective dimensions.