| US 7,507,223 B2 | ||
| Cannula for dispensing fluid products for vaginal and anal applications | ||
| Antonio Fontana, Carpi (Italy) | ||
| Assigned to LAMEPLAST S.p.A., Frazione Rovereto sul Secchia (Italy) | ||
| Appl. No. 10/569,082 PCT Filed Sep. 14, 2004, PCT No. PCT/EP2004/010257 § 371(c)(1), (2), (4) Date Feb. 21, 2005, PCT Pub. No. WO2005/030313, PCT Pub. Date Apr. 07, 2005. |
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| Claims priority of application No. MO03A0263 (IT), filed on Sep. 26, 2003. | ||
| Prior Publication US 2006/0264802 A1, Nov. 23, 2006 | ||
| Int. Cl. A61M 31/00 (2006.01); A61M 5/00 (2006.01); G01F 11/00 (2006.01) | ||
| U.S. Cl. 604—279 [604/60; 604/187; 604/224; 222/391] | 22 Claims |
| 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.
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