Patent ID: 7507223
Filing Date: 2009-03-24
Classification: A61M

Abstract:
1. A cannula for dispensing fluid products for vaginal and anal applications, comprising an inner tubular body for containing a fluid product, which is provided, at a first end, with an outlet for dispensing said product and, at a second end that lies opposite the first end, with a grip at least one rectilinear longitudinal slot that is formed on the lateral surface of said inner tubular body, and outer tubular body, which is open at its two opposite ends and is fitted substantially coaxially over said inner tubular body and is associated therewith a rotary coupling, a helical guide formed on an inner lateral surface of said outer tubular body, and a plunger which is accommodated in said inner tubular body, with which it is associated so that it can slide axially, and is provided with at least one pin which is inserted so that it can slide within said rectilinear longitudinal slot and is provided with an end that extends beyond said rectilinear longitudinal slot and couples to said helical guide, the relative rotation of said inner tubular body and of said outer tubular body being adapted to move said plunger so that t slides along said inner tubular body in order to expel said product from said outlet; wherein said grip comprises a tang fixed to and extending into the said second end of the inner tubular body and rotatably engaged to said outer tubular body and a cap fixed to said tang and over one end of said outer tubular body by a plurality of first knurlings, which run longitudinally on at least one portion of the inner lateral surface of said cap and mesh with corresponding second knurlings formed on a respective portion of the outer lateral surface of said tang to preclude rotation between said cap and said tang, and at least one ring that protrudes from said outer lateral surface of the tang and is coupled by interlocking with a corresponding annular groove formed in said inner lateral surface of the cap to preclude relative sliding along the length of the cannula between said cap and said tang.