# US 11,992,672 B2 · Mask pad having electrical muscle stimulation electrode pad > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,992,672 B2 - Document ID: US11992672B2 - Status: Granted - Kind: B2 - Application number: 18/469,271 - Filed: 2023-09-18 - Published: 2024-01-04 - Granted: 2024-05-28 - Earliest claimed: 2020-07-02 - Assignees: Lutronic Corporation - Applicants: Lutronic Corporation - Inventors: Kwang Chon Ko; James Bartholomeusz - Web page: https://patentgrep.com/patent/US11992672B2 ## CPC - A61N 1/0492: {Patch electrodes (A61N1/0412, A61N1/0428 take precedence)} - A61N 1/0452: {Specially adapted for transcutaneous muscle stimulation [TMS]} - A61N 1/0476: {Array electrodes (including any electrode arrangement with more than one electrode for at least one of the polarities)} - A61N 1/06: for high-frequency therapy - A61N 1/36003: {of motor muscles, e.g. for walking assistance} - A61N 1/3603: {Control systems} - A61N 1/36034: {specified by the stimulation parameters} - 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) ## Abstract The present disclosure relates to a mask pad having EMS electrode pads. Each electrode of the EMS electrode pad may be provided to correspond to the shape and size of the divided area according to the virtual line. The mask pad according to the present invention may minimize the edge current effect by the shape of the electrode to which electric energy is applied. In addition, energy transfer efficiency may be improved by capacitive coupling between the electrode and the skin. In addition, due to the coating of the electrode, a rate of contact with an affected part may be increased so that current may be applied evenly to each part. ## Claims ### Claim 1 A mask pad comprising: a pad sheet configured to be attached to a face; and at least one electrical muscle stimulation (EMS) electrode pad provided at a position corresponding to a facial muscle when the pad sheet is attached to the face, wherein the EMS electrode pad comprises: a base having a plate-like shape; a plurality of electrodes arranged on a lower surface of the base; a plurality of first connection portions penetrating the base in a thickness direction and having one side electrically connected with each of the plurality of electrodes; and a second connection portion disposed on an upper surface of the base and connected with the other side of the plurality of first connection portions, wherein the plurality of electrodes is provided in virtual sections divided by a plurality of first virtual lines and a plurality of second virtual lines on the lower surface of the base, the first line forms a path directing toward an edge from a center portion of the lower surface of the base, and the second line is configured as an annular path based on which a center portion of the base is an inner side. ### Claim 2 (depends on 1) The mask pad of claim 1, wherein the pad sheet is configured such that the EMS electrode is exposed to a surface in contact with the face. ### Claim 3 (depends on 2) The mask pad of claim 2, wherein the EMS electrode pad is provided at a position of the patch sheet in which at least one of Frontalis, Temporalis, Procerus, Orbicularis oculi, Lavator labii superioris, Zygomaticus, Masseter, Buccinator, Risorius, Platysma, Oibicularis oris, Depressor labii inferioris, and Depressor anguli oris is stimulated. ### Claim 4 (depends on 3) The mask pad of claim 3, wherein the EMS electrode pad is provided in plurality, and the plurality of EMS electrodes are configured to independently perform electrical stimulation on each contacted muscle. ### Claim 5 (depends on 4) The mask pad of claim 4, wherein the EMS electrode pad comprises at least some of the plurality of first lines formed along a curved path and at least some of the plurality of first lines formed along a path of a sinusoidal wave. ### Claim 6 (depends on 5) The mask pad of claim 5, wherein an interval between one second line and another second line adjacent thereto increases so that a size of the section increases in a direction toward the edge portion from the center portion, wherein at least some of the plurality of electrodes are configured to increase in size in the direction toward the edge portion from the center portion. ### Claim 7 (depends on 5) The mask pad of claim 5, wherein each of the plurality of electrodes of the EMS electrode pad is configured in a shape that fits a shape of a virtual region divided by the first and second virtual lines. ### Claim 8 (depends on 7) The mask pad of claim 7, wherein the plurality of electrodes of the EMS electrode pad is insulated from each other on the lower surface of the base. ### Claim 9 (depends on 7) The mask pad of claim 7, wherein the plurality of electrodes of the EMS electrode pad is spaced apart from each other by a predetermined distance on the lower surface of the base. ### Claim 10 (depends on 7) The mask pad of claim 7, wherein the electrodes of the EMS electrode pad are formed in a flat plate shape. ### Claim 11 (depends on 2) The mask pad of claim 2, wherein the EMS electrode pad further comprises: a shielding layer configured to cover the second connection portion and formed of an insulating material. ### Claim 12 (depends on 11) The mask pad of claim 11, further comprising: a connector configured to receive RF energy from the outside and electrically connected to one side of the second connection portion. ### Claim 13 (depends on 1) The mask pad of claim 1, wherein the base and the pad sheet of the EMS electrode pad are formed of different flexible materials. ### Claim 14 (depends on 1) The mask pad of claim 1, wherein the base is formed of a rigid material. ### Claim 15 (depends on 2) The mask pad of claim 2, wherein the EMS electrode pad further comprises: a dielectric layer covering the plurality of electrodes. ### Claim 16 (depends on 15) The mask pad of claim 15, wherein, when a lower surface of the dielectric layer comes into contact with a skin, capacitive coupling is formed between the plurality of electrodes in contact with an upper surface of the dielectric layer and the contacted skin. ### Claim 17 (depends on 16) The mask pad of claim 16, wherein the EMS electrode pad is configured as a pair to receive bipolar RF energy. ### Claim 18 (depends on 16) The mask pad of claim 16, wherein the dielectric layer is formed of ceramic or polytetrafluoroethylene (PTFE). ### Claim 19 (depends on 2) The mask pad of claim 2, wherein the EMS electrode pad further comprises: a conductive layer provided on a surface of the plurality of electrodes which comes into contact with the skin. ### Claim 20 (depends on 19) The mask pad of claim 19, wherein the conductive layer is configured to cover the plurality of electrodes.