Abstract:
The invention relates to a pump comprising a piston (1) which slides in a body (3) having a chamber (5) defined between an inlet valve (11) and an outlet valve (12), comprising an outlet valve element sliding during actuation in a sealed manner in the chamber (5), which comprises passage means (40) such that, at the end of the actuation, said outlet valve element (39) cooperates in a non-sealing manner with said passage means (40) in order to open said outlet valve (12), said inlet valve (11) comprising an inlet valve element (10) which slides after closure of the inlet valve (11) in a sleeve (9) of the body (3) having a reduced diameter and containing a spring (20) bearing on said inlet valve element (10) and on a bottom of said sleeve (9), said spring (20) returning the piston (1) into its rest position, said sleeve (9) having an inner diameter of less than 4.2 mm, said spring (20) having a force of at least 20 N, so that said pump delivers said fluid product at a pressure (P) of at least 15 bars.
Abstract:
A fluid dispenser device comprising a body (10) that supports, in stationary manner, a reservoir (20) containing fluid, a dispenser head (30) being assembled on said body (10) so as to be axially movable relative to said reservoir (20), said dispenser head (30) being provided with a dispenser orifice (31), said dispenser head (30) including a proximal bearing surface (35) that, during actuation, receives at least one, and typically two, of the user's fingers, and said body (10) including a distal bearing surface (15) that, during actuation, is suitable for receiving one of the user's fingers, and typically the thumb, said device including a removable actuator member (40) that is fastened in removable manner on said body (10) at said distal bearing surface (15), said removable actuator member (40) having a radial dimension that is greater than the radial dimension of said bearing surface (15).
Abstract:
A nasal fluid dispenser assembly (100) having a first reservoir (110) of fluid, a metering pump (120) mounted on the first reservoir (110) and including a piston (121); a compressed gas flow generator system; a nasal endpiece (150) having a connection portion (151) fastened to the outlets of the pump and valve (140), a fluid chamber (153) that receives the dose of fluid and the flow of compressed gas, and a nasal insertion element (152 that extends longitudinally along an axis (B) and contains a dispenser channel (154) connected to the fluid chamber and has a dispenser orifice (155). The axis (B) forms an angle (α) relative to the longitudinal axis (A). The dose of fluid is dispensed into the fluid chamber and then expelled under pressure by the flow of compressed gas out from the fluid chamber through the dispenser channel (154) the dispenser orifice (155).
Abstract:
A fluid injection device including a syringe with a body (1), a piston (3), and a needle (2) with an injection tip (20); a piston rod (5); and a sleeve (10) around the syringe and axially movable between a non-projecting position in which said sleeve (10) does not cover the injection tip (20) and a projecting position. The sleeve (10) urged, while in said non-projecting position, towards its projecting position by a spring (30). The sleeve (10) has an inner portion (11) extending inside the body, and an outer portion (12) extending outside the body (1), the inner portion (11) including a radially-deformable tab (110) snap-fastened in a window (6) of the body (1), blocking the sleeve in its non-projecting position. A hollow member (40) co-operates, after injection, with the radially-deformable tab (110), so that after the fluid is injected, the sleeve is moved automatically towards its projecting position.
Abstract:
A fluid dispenser device with a body (1), and an axially movable dispenser head (2). The body receives a reservoir (10) having a tube (11) with a proximal axial opening (12) closed by a stopper (20) and adapted to slide in leaktight manner in the tube (11). The dispenser head includes a cannula (4) connected at one end to the dispenser orifice (3), and provided at its other end with a perforating tip (5) for perforating the stopper. The cannula is inserted into a cannula support (9) secured to the dispenser head and including a borehole with an inside diameter equal to, or a little greater than, the outside diameter of the cannula. The distal end of the cannula support (9) has a projection extending inwards and an inside diameter equal to, or a little less than, the outside diameter of the cannula.
Abstract:
A fluid dispenser valve including a valve body extending along a longitudinal axis between a first axial end and a second axial end, the valve body containing a metering chamber; and a valve member that slides axially in the valve body between a rest position and a dispensing position, for selectively dispensing the contents of the metering chamber. The metering chamber is connected, in the valve member rest position, to a fluid reservoir, to fill the metering chamber by gravity when the valve is upsidedown with the metering chamber below the reservoir while the valve member is in the rest position, and to empty the metering chamber by gravity when the valve is upright. The valve body includes a first hole and a second hole, to fill and to empty the metering chamber, the first hole being axially offset along the longitudinal axis relative to the at second hole.
Abstract:
A fluid dispenser pump having a piston secured to an actuator rod that slides in a pump body that includes a pump chamber defined between an inlet valve and an outlet valve. The outlet valve has an outlet valve member, wherein, during actuation, the outlet valve member slides in leaktight manner in the pump body, the pump body including a passage formed by at least a pump body portion of greater inside diameter, so that, at the end of actuation of the pump, the outlet valve member co-operates in non-leaktight manner with the passage so as to open the outlet valve, so as to enable the fluid contained in the pump chamber to be expelled.
Abstract:
Metering valve for dispensing a fluid product, having a valve body containing a metering chamber, the metering chamber defined by a chamber insert and two O-rings, a valve stem seal and a chamber seal. The chamber insert has a cylindrical wall, an upper edge that cooperates with the valve stem seal and a lower edge that cooperates with the chamber seal, a valve stem sliding axially in the valve body between a rest position and a dispensing position, to selectively dispense the contents of said metering chamber. The said valve stem is urged towards its rest position by a spring that cooperates, on the one hand, with the valve body and on the other hand with the valve stem. The upper edge of the chamber insert has an opening connecting the metering chamber to an external volume arranged outside the chamber insert, between the valve body and the cylindrical wall.
Abstract:
A nasal delivery device for a powder, having a reservoir, a delivery head and an air discharge system generating a flow of compressed air. The air discharge system has an air chamber, formed by a hollow axial cylinder, and a piston that sealingly slides in the air chamber to compress the air. The hollow axial cylinder has a radial shoulder connecting a first cylinder portion and a second cylinder portion. Before actuation, the piston is at the first cylinder portions and, during actuation, the piston sealingly cooperates with the second cylinder portion. The radial shoulder defines a profile that the piston overcomes at start of actuation. The piston has an upper lip and a lower lip, a skirt around the hollow axial cylinder with a lower flange projecting radially inward. The skirt has a profile radially projecting towards the inside, cooperating before actuation with the lower lip of the piston.
Abstract:
A fluid dispenser device having a reservoir (10) containing fluid; a dispenser head (20) provided with a dispenser orifice (21); and a piston (45; 70) for dispensing at least a portion of the fluid through the dispenser orifice (21). The reservoir (10) is closed in leaktight manner by a closure element (25) before actuation. The device includes a passage (40) for connecting the reservoir (10) to the dispenser orifice (21) during actuation, the passage (40) including a hollow sleeve (41) that is stationary relative to the dispenser head (20), for sliding around the closure element (25) during actuation, so as to open the passage (40).