# US 11,439,779 B2 · Device for dispensing a fluid product > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,439,779 B2 - Document ID: US11439779B2 - Status: Granted - Kind: B2 - Application number: 16/955,972 - Filed: 2018-12-18 - Published: 2020-10-08 - Granted: 2022-09-13 - Earliest claimed: 2017-12-22 - Assignees: Aptar France SAS - Applicants: Aptar France SAS - Inventors: Ludovic Petit - Web page: https://patentgrep.com/patent/US11439779B2 ## CPC - A61M 15/08: Inhaling devices inserted into the nose - A61M 5/283: {by telescoping of ampoules or carpules with the syringe body} - A61M 5/315: Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod {or piston}; Appliances on the rod for facilitating dosing {; Dosing mechanisms} - A61M 5/31591: {Single dose, i.e. individually set dose administered only once from the same medicament reservoir, e.g. including single stroke limiting means} - A61M 11/007: {Syringe-type or piston-type sprayers or atomisers} - A61M 15/0028: {using prepacked dosages, one for each application, e.g. capsules to be perforated or broken-up} - A61M 15/0043: {Non-destructive separation of the package, e.g. peeling} - B05B 11/0008: {Sealing or attachment arrangements between sprayer and container (between pump and container B05B11/1043)} - B05B 11/02: Membranes or pistons acting on the contents inside the container, e.g. follower pistons - A61M 5/30: Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules - A61M 2005/3118: {via the distal end of a syringe, i.e. syringe end for mounting a needle cannula} - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) ## 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). ## Claims ### Claim 1 A fluid dispenser device comprising: a reservoir (10) containing fluid; a dispenser head (20) that is provided with a dispenser orifice (21); a piston (45; 70) for dispensing at least a portion of said fluid through said dispenser orifice (21); said reservoir (10) being closed in leaktight manner by a closure element (25) before actuation; said device including passage means (40) for connecting said reservoir (10) to said dispenser orifice (21) during actuation, the device being characterized in that said passage means (40) comprise a hollow sleeve (41) that is stationary relative to said dispenser head (20), for sliding around said closure element (25) during actuation, so as to open said passage means (40). ### Claim 2 (depends on 1) A device according to claim 1, wherein a radial gasket (70) is assembled on said hollow sleeve (41) so as to form a piston of the device, which piston co-operates in leaktight manner with said reservoir (10) during actuation, so as to drive the fluid towards said dispenser orifice (21). ### Claim 3 (depends on 1) A device according to claim 1, wherein said hollow sleeve (41) is formed integrally with a piston-forming lip (45) that co-operates in leaktight manner with said reservoir (10) during actuation, so as to drive the fluid towards said dispenser orifice (21). ### Claim 4 (depends on 3) A device according to claim 3, wherein said lip (45) is formed at a proximal axial edge of said hollow sleeve (41). ### Claim 5 (depends on 3) A device according to claim 3, wherein said hollow sleeve (41) and said lip (45) are formed integrally with a hollow member (60) that is arranged in said dispenser head (20), upstream from said dispenser orifice (21), said hollow member (60) defining an expulsion channel (61). ### Claim 6 (depends on 5) A device according to claim 5, wherein said hollow member (60) defines a spray profile directly upstream from said dispenser orifice (21). ### Claim 7 (depends on 1) A device according to claim 1, wherein said hollow sleeve (41) is assembled in a hollow member (60) that is arranged in said dispenser head (20), upstream from said dispenser orifice (21), said hollow member (60) defining an expulsion channel (61). ### Claim 8 (depends on 1) A device according to claim 1, wherein said hollow sleeve (41) includes an inner profile, such as one or more grooves or splines, so that when said hollow sleeve (41) is arranged around said closure element (25), said inner profile creates one or more fluid passages around said closure element (25), so as to open said passage means (40). ### Claim 9 (depends on 1) A device according to claim 1, wherein the outer cylindrical wall of said hollow sleeve (41) has an outer profile, such as one or more grooves or splines, so that when said hollow sleeve (41) is arranged around said closure element (25), said outer profile creates one or more fluid passages around said closure element (25), between the outside of said hollow sleeve (41) and an inner wall of said reservoir (10), so as to open said passage means (40). ### Claim 10 (depends on 9) A device according to claim 9, wherein said hollow sleeve (41) is formed integrally with a piston-forming lip (45) that co-operates in leaktight manner with said reservoir (10) during actuation, so as to drive the fluid towards said dispenser orifice (21); wherein said hollow sleeve (41) and said lip (45) are formed integrally with a hollow member (60) that is arranged in said dispenser head (20), upstream from said dispenser orifice (21), said hollow member (60) defining an expulsion channel (61); and wherein said hollow sleeve (41) includes a radial channel (42) for guiding the liquid towards said expulsion channel (61), with said piston (45, 70) arranged axially in proximal manner relative to said radial channel (42). ### Claim 11 (depends on 1) A device according to claim 1, wherein said closure element (25) is a ball. ### Claim 12 (depends on 1) A device according to claim 1, wherein said closure element (25) is a cylindrical stopper. ### Claim 13 (depends on 1) A device according to claim 1, wherein said closure element (25) is made out of elastomer or thermoplastic material. ### Claim 14 (depends on 1) A device according to claim 1, wherein said reservoir (10) contains a single dose of fluid for dispensing during a single actuation of the device. ### Claim 15 (depends on 1) A device according to claim 1, wherein said reservoir (10) contains two doses of fluid for dispensing during two successive actuations of the device.