# US 2021/0330969 A1 · Functional electrical stimulation therapeutic apparatus for foot drop > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0330969 A1 - Document ID: US20210330969A1 - Status: Published application - Kind: A1 - Application number: 16/611,740 - Filed: 2018-08-31 - Published: 2021-10-28 - Earliest claimed: 2018-08-24 - Assignees: Shenzhen XFT Medical Limited - Applicants: Shenzhen XFT Medical Limited - Inventors: Chunhu XIE; Chang LIU - Web page: https://patentgrep.com/patent/US20210330969A1 ## CPC - A61N 1/36003: {of motor muscles, e.g. for walking assistance} - A61N 1/0456: {Specially adapted for transcutaneous electrical nerve stimulation [TENS]} - A61N 1/3603: {Control systems} - A61N 1/37223: {Circuits for electromagnetic coupling} - 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 An integrated functional electrical stimulation therapeutic apparatus for foot drop based on a sequence of electrodes is provided, including an upper casing, a waterproof ring, a control circuit, a lower casing, a support molded integrally with the lower casing, a sequence of small electrodes, and a large electrode; wherein the sequence of small electrodes and the large electrode are embedded in surfaces of the lower casing and the support by using an in-mold injection process, and the sequence of small electrodes and the large electrode are stainless steel metal electrodes. An integrated waterproof design is used in the above therapeutic apparatus. ## Claims ### Claim 1 A functional electrical stimulation therapeutic apparatus for foot drop, comprising an upper casing, a waterproof ring, a control circuit, a lower casing, a support molded integrally with the lower casing, a sequence of small electrodes, and a large electrode, wherein the sequence of small electrodes and the large electrode are embedded in a surface of the lower casing and a surface of the support by using an in-mold injection process, and the sequence of small electrodes and the large electrode are stainless steel metal electrodes. ### Claim 2 (depends on 1) The therapeutic apparatus according to claim 1, wherein the control circuit is connected with a magnetic connector, the magnetic connector is disposed in the lower casing and connected with a charging cable via a charging port of the lower casing, and the charging port is in a closed state when it is idle. ### Claim 3 (depends on 2) The therapeutic apparatus according to claim 2, wherein the control circuit is connected with the magnetic connector via a magnetic connector circuit board. ### Claim 4 (depends on 1) The therapeutic apparatus according to claim 1, wherein an inner surface of the upper casing has a limiting frame, a first flexible circuit board is attached in the limiting frame, a button mark is provided at a location on an outer surface of the upper casing that is corresponding to the first flexible circuit board, and the first flexible circuit board is connected with the control circuit for transmitting, to the control circuit, information on a button pressing by a user. ### Claim 5 (depends on 1) The therapeutic apparatus according to claim 1, wherein the surface of the support is provided with a wiring slot in which a second flexible circuit board having pad locations is mounted, and the second flexible circuit board is connected with the control circuit via the pad locations; the sequence of small electrodes have bumps respectively connected with the pad locations and are connected with the control circuit via the bumps. ### Claim 6 (depends on 5) The therapeutic apparatus according to claim 5, wherein the surface of the support is provided with a cover slot and a cover for flexible circuit matched with the cover slot, and the wiring slot is disposed in the cover slot. ### Claim 7 (depends on 1) The therapeutic apparatus according to claim 1, wherein the sequence of small electrodes comprises at least six small electrodes, the small electrodes are symmetrically distributed, the large electrode has an oblong shape, the small electrodes each have a rectangular shape, and the control circuit, the small electrodes, a human body, and the large electrode constitute an electrical stimulation loop. ### Claim 8 (depends on 1) The therapeutic apparatus according to claim 1, wherein the surfaces of the lower casing and the support are coated with a soft rubber, and the soft rubber is extended to form a strap. ### Claim 9 (depends on 8) The therapeutic apparatus according to claim 8, wherein a front end of the upper casing is provided with a lug, the strap is provided thereon with a Velcro loop material and a Velcro hook material, the Velcro loop material is fixed to an upper end of the strap by a machine sewing process, the Velcro hook material is fixed to a lower end of the strap by the machine sewing process, the strap passes through the lug and is folded back and then fixed by the Velcro, wherein the strap is folded back by a length which is adjusted and fixed by the Velcro. ### Claim 10 (depends on 9) The therapeutic apparatus according to claim 9, wherein the strap is made of TPE (Thermoplastic Elastomer) or TPU (Thermoplastic Polyurethanes). ### Claim 11 (depends on 1) The therapeutic apparatus according to claim 1, wherein the large electrode is configured to cover a junction of the common peroneal nerve, and the small electrodes is configured to cover branches of the common peroneal nerve. ### Claim 12 (depends on 1) The therapeutic apparatus according to claim 1, wherein a rear end of the support has a positioning point, the positioning point is spaced apart from a nearest small electrode by 1 to 5 mm, and the large electrode is spaced apart from a nearest small electrode by 10 to 15 mm. ### Claim 13 (depends on 2) The therapeutic apparatus according to claim 2, wherein the large electrode is configured to cover a junction of the common peroneal nerve, and the small electrodes is configured to cover branches of the common peroneal nerve. ### Claim 14 (depends on 3) The therapeutic apparatus according to claim 3, wherein the large electrode is configured to cover a junction of the common peroneal nerve, and the small electrodes is configured to cover branches of the common peroneal nerve. ### Claim 15 (depends on 4) The therapeutic apparatus according to claim 4, wherein the large electrode is configured to cover a junction of the common peroneal nerve, and the small electrodes is configured to cover branches of the common peroneal nerve. ### Claim 16 (depends on 5) The therapeutic apparatus according to claim 5, wherein the large electrode is configured to cover a junction of the common peroneal nerve, and the small electrodes is configured to cover branches of the common peroneal nerve. ### Claim 17 (depends on 6) The therapeutic apparatus according to claim 6, wherein the large electrode is configured to cover a junction of the common peroneal nerve, and the small electrodes is configured to cover branches of the common peroneal nerve. ### Claim 18 (depends on 7) The therapeutic apparatus according to claim 7, wherein the large electrode is configured to cover a junction of the common peroneal nerve, and the small electrodes is configured to cover branches of the common peroneal nerve. ### Claim 19 (depends on 8) The therapeutic apparatus according to claim 8, wherein the large electrode is configured to cover a junction of the common peroneal nerve, and the small electrodes is configured to cover branches of the common peroneal nerve. ### Claim 20 (depends on 9) The therapeutic apparatus according to claim 9, wherein the large electrode is configured to cover a junction of the common peroneal nerve, and the small electrodes is configured to cover branches of the common peroneal nerve.