# US 10,946,191 B2 · Iontophoretic device having a reservoir > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,946,191 B2 - Document ID: US10946191B2 - Status: Granted - Kind: B2 - Application number: 15/106,226 - Filed: 2014-12-08 - Published: 2016-10-27 - Granted: 2021-03-16 - Earliest claimed: 2013-12-20 - Assignees: L'oreal - Applicants: L'oreal - Inventors: Jennyfer Cazares Delgadillo - Web page: https://patentgrep.com/patent/US10946191B2 ## CPC - A61N 1/303: {Constructional details (electrodes for external use A61N1/0428)} - A45D 34/041: {using a roller, a disc or a ball} - A61M 37/00: Other apparatus for introducing media into the body (for reproduction or fertilisation A61B17/425; apparatus for iontophoresis or cataphoresis A61N1/30); Percutany, i.e. introducing medicines into the body by diffusion through the skin (salt baths A61H33/04) - A61N 1/0428: {Specially adapted for iontophoresis, e.g. AC, DC or including drug reservoirs} - A61M 2037/0007: {having means for enhancing the permeation of substances through the epidermis, e.g. using suction or depression, electric or magnetic fields, sound waves or chemical agents} - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) - A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING - 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)} ## Abstract A device for the cosmetic treatment of keratin materials with an electric current, including: a current generator (1), a reservoir (3) containing a cosmetic composition (P), an end piece (2) comprising an electrode (4) and at least one applicator member (6, 7), said applicator member (6, 7) delimiting an outer wall (61, 71) that is able to be filled with product contained in the reservoir (3), a counter electrode (5), a system for regulating the quantity of composition (P) exiting the reservoir (3) on the basis of the impedance measured between the electrode (4) and the keratin materials, the electrode (4) and the applicator member (6, 7) being designed such that the composition (P) is the only conductive substance in contact with the skin while the device is being used. ## Claims ### Claim 1 A device for the cosmetic treatment of keratin materials with an electric current, comprising: a reservoir containing a cosmetic composition; an end piece configured to receive the cosmetic composition from the reservoir; an applicator member disposed in the end piece, such that a portion of the applicator member is exposed outside of the end piece and configured to contact the keratin materials; a first electrode disposed in the end piece and configured to transmit an electric current to the cosmetic composition disposed on the applicator member; a counter electrode; a current generator configured to generate an electric potential between the first electrode and the counter electrode and measure an impedance between the first electrode and the keratin materials; and a dispensing system configured to regulate an amount of the cosmetic composition that is dispensed from the reservoir onto the applicator member, based on the measured impedance, wherein the first electrode and the end piece are configured such that the first electrode is prevented from directly contacting the keratin materials while the device is being used. ### Claim 2 (depends on 1) The device according to claim 1, wherein the first electrode is at a distance (dmin) of between 0.2 mm and 5 mm from the applicator member. ### Claim 3 (depends on 1) The device according to claim 1, wherein the applicator member can rotate about a rotation axis. ### Claim 4 (depends on 1) The device according to claim 1, wherein the applicator member is a ball. ### Claim 5 (depends on 1) The device according to claim 1, wherein the reservoir has an elastically deformable outer wall. ### Claim 6 (depends on 1) The device according to claim 1, wherein the reservoir comprises a duct configured to supply the cosmetic composition to the end piece. ### Claim 7 (depends on 1) The device according to claim 1, wherein the applicator member further comprises a plurality of applicator members. ### Claim 8 (depends on 1) The device according to claim 1, further comprising a source of light. ### Claim 9 (depends on 1) The device according to claim 1, further comprising a source of heat. ### Claim 10 (depends on 9) The device according to claim 9, wherein the heat source comprises an infrared source or a resistor. ### Claim 11 (depends on 1) The device according to claim 1, wherein the reservoir is removable. ### Claim 12 (depends on 1) The device according to claim 1, wherein the reservoir is a single-use reservoir. ### Claim 13 (depends on 1) The device according to claim 1, wherein the cosmetic composition is chosen from: a face care or body care composition; a composition for making up the face or body; a hair treatment composition; or a composition for the scalp of a user. ### Claim 14 (depends on 1) The device according to claim 1, wherein the cosmetic composition is a face care or body care composition having an active agent chosen from humectant or moisturizing active agents, anti-ageing active agents, active agents that act on cutaneous microcirculation, or seboregulating active agents. ### Claim 15 (depends on 14) The device according to claim 14, wherein the anti-ageing active agent comprises a depigmenting agent. ### Claim 16 (depends on 1) The device according to claim 1, wherein the cosmetic composition is a hair treatment composition chosen from: a composition for washing the hair, for hair care or conditioning, or for temporary form retention or shaping of the hair; a composition for temporary, semi-permanent, or permanent dyeing of the hair; or a composition for relaxing or permanent-waving the hair. ### Claim 17 (depends on 1) The device according to claim 1, wherein the cosmetic composition is a composition for the scalp of a user chosen from an antidandruff composition, a composition for preventing hair loss or for promoting regrowth of the hair, an anti-seborrheic composition, an anti-inflammatory composition, an anti-irritation or soothing composition, a mark-preventing composition, or a composition for stimulating or protecting the scalp.