# US 8,771,163 B2 · Transcranial magnetic stimulation system and methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,771,163 B2 - Document ID: US8771163B2 - Status: Granted - Kind: B2 - Application number: 13/783,427 - Filed: 2013-03-04 - Published: 2013-07-11 - Granted: 2014-07-08 - Earliest claimed: 2005-06-16 - Assignees: Brainsway, Ltd.; Yeda Research and Development Co. Ltd. at the Weizmann Institute of Science; The United States of America, as represented by the Secretary, Department of Health and Human Services - Applicants: Brainsway, Inc.; Government of the United States of America, as Represented by the Secretary, Depart; Yeda Research & Development Co. Ltd. at the Weizmann Institute of Science - Inventors: Abraham Zangen; Yiftach Roth; Pedro C. Miranda; David Hazani; Mark Hallett - Web page: https://patentgrep.com/patent/US8771163B2 ## CPC - A61N 2/02: using magnetic fields produced by coils, including single turn loops or electromagnets (A61N2/12 takes precedence) - A61N 2/006: {for magnetic stimulation of nerve tissue} - 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 A system and methods for transcranial magnetic stimulation, the system including a helmet, a positioning portion, a stimulator and a cooling system, are disclosed. The helmet includes a coil for deep brain magnetic stimulation. The coil has a base portion, and return portions, which may include a protruding return portion and a contacting return portion. The coil is designed to minimize unintended stimulation of portions of the brain, while reducing accumulation of surface charges. The coil is stimulated at several locations and/or at different times so as to focus the electrical field on a specific deep neuronal structure. ## Claims ### Claim 1 A coil for magnetic stimulation, the coil comprising: a first base portion, said first base portion comprising first base portion multiple stimulating elements configured to carry current in substantially a first direction, said first base portion multiple stimulating elements substantially parallel to one another, said first base portion configured to be positioned on a first area of a body part, wherein said first base portion multiple stimulating elements are flexible so as to conform to the first area of the body part; a second base portion, said second base portion comprising second base portion multiple stimulating elements configured to carry current in substantially a second direction, said second base portion multiple stimulating elements substantially parallel to one another, said second base portion configured to be positioned on a second area of the body part, wherein said second base portion multiple stimulating elements are flexible so as to conform to the second area of the body part; a protruding return portion comprising multiple return elements, said multiple return elements substantially parallel to one another, wherein each of said multiple return elements corresponds to one of said second base portion multiple stimulating elements, and wherein each of said multiple return elements is configured to carry electrical current in substantially a third direction, wherein said third direction is an opposite direction to said second direction, wherein said protruding return portion is positioned higher than said first base portion; and multiple connecting elements for connecting said first base portion to said second base portion and said second base portion to said protruding return portion. ### Claim 2 (depends on 1) The coil of claim 1, wherein said protruding return portion is positioned higher than said first base portion at a distance of between 4-10 cm. ### Claim 3 (depends on 1) The coil of claim 1, wherein said body part is a head, and wherein said first area of the body part is a left side of the head and wherein said first direction is an anterior/posterior direction. ### Claim 4 (depends on 1) The coil of claim 1, wherein said second area of the body part is a front portion of the head, and wherein said second direction is a lateral/medial direction. ### Claim 5 (depends on 1) The coil of claim 1, further comprising a contacting return portion comprising multiple contacting return elements, said multiple contacting return elements substantially parallel to one another, wherein each of said multiple return elements corresponds to one of said first base portion multiple stimulating elements, and wherein each of said multiple contacting return elements is configured to carry electrical current in substantially a fourth direction, wherein said fourth direction is an opposite direction to said first direction, wherein said contacting return portion is configured to be positioned on a third area of the body part. ### Claim 6 (depends on 5) The coil of claim 5, wherein said third area is at a distance of between 7-15 cm from said first area. ### Claim 7 (depends on 5) The coil of claim 5, wherein said third area of the body part is a right side of the head and said fourth direction is a posterior/anterior direction. ### Claim 8 (depends on 1) The coil of claim 1, further comprising a protruding return portion comprising multiple protruding return elements, said multiple protruding return elements substantially parallel to one another, wherein each of said multiple return elements corresponds to one of said first base portion multiple stimulating elements, and wherein each of said multiple protruding return elements is configured to carry electrical current in substantially a fourth direction, wherein said fourth direction is an opposite direction to said first direction. ### Claim 9 (depends on 1) The coil of claim 1, further comprising: a contacting return portion comprising multiple contacting return elements, said multiple contacting return elements substantially parallel to one another, wherein each of said multiple return elements corresponds to one of said first base portion multiple stimulating elements, and wherein each of said multiple contacting return elements is configured to carry electrical current in substantially a fourth direction, wherein said fourth direction is an opposite direction to said first direction, wherein said contacting return portion is configured to be positioned on a third area of the body part; and a protruding return portion comprising multiple protruding return elements, said multiple protruding return elements substantially parallel to one another, wherein each of said multiple return elements corresponds to one of said first base portion multiple stimulating elements, and wherein each of said multiple protruding return elements is configured to carry electrical current in substantially said fourth direction, wherein said fourth direction is an opposite direction to said first direction. ### Claim 10 (depends on 1) The coil of claim 1, wherein each of said first base portion multiple stimulating elements has a length of between 7-12 cm. ### Claim 11 (depends on 1) The coil of claim 1, wherein said first base portion multiple stimulating elements are spaced from one another with a spacing of between 0.5-1.5 cm. ### Claim 12 (depends on 1) The coil of claim 1, wherein said multiple return elements are spaced apart from one another with a spacing of between 0.1-1.2 cm. ### Claim 13 (depends on 1) The coil of claim 1, wherein at least some of said connecting elements are ascending/descending connectors. ### Claim 14 A coil for magnetic stimulation of a target area, the coil positionable on a body part, the coil comprising: a base portion comprising at least two substantially parallel spaced apart members for providing electrical current flow in a direction tangential to the target area, said base portion positioned at a first level with respect to the target area; a contacting return portion for carrying returning current in a direction opposite the direction of current flow of said base portion, said contacting return portion in electrical communication with said base portion members and positioned substantially in the first level and spaced at a distance from the target area, wherein said first level is configured for placement on a skull, and a protruding connecting portion for carrying current from said base portion to said contacting return portion, wherein said protruding connecting portion is positioned at a second level, wherein said second level is higher than said first level. ### Claim 15 (depends on 14) The coil of claim 14, wherein said second level is between 4 and 10 cm higher than said first level. ### Claim 16 (depends on 14) The coil of claim 14, wherein said base portion has a base portion spacing distance between said at least two base portion members and said return portion has a return portion spacing distance between said at least two return portion members, and wherein said base portion spacing distance is different than said return portion spacing distance. ### Claim 17 (depends on 14) The coil of claim 14, wherein said distance of said contacting return portion from said target area is 3-20 cm. ### Claim 18 (depends on 14) The coil of claim 14, wherein said distance of said contacting return portion from said target area is 7-15 cm. ### Claim 19 (depends on 14) The coil of claim 14, wherein at least two substantially parallel spaced apart base portion members comprises three or more members. ### Claim 20 A coil for magnetic stimulation, the coil comprising: a base portion comprising multiple stimulating elements positioned along a length axis and configured to carry current in a stimulating direction, wherein said stimulating direction is substantially a lateral/medial direction along said length axis, said multiple stimulating elements substantially parallel to one another, said base portion configured to be positioned on a first area of a body part, wherein said multiple stimulating elements are flexible so as to conform to the first area of the body part; a return portion comprising multiple return elements positioned along the length axis and configured to carry current in a return direction, wherein said return direction is substantially a lateral/medial direction along said length axis and opposite said stimulating direction, said multiple return elements substantially parallel to one another and, wherein each of said multiple return elements corresponds to one of said multiple stimulating elements; and multiple protruding connecting elements for connecting said base portion to said return portion, wherein said multiple protruding connecting elements are configured to be positioned at a vertical distance from the body part. ### Claim 21 (depends on 20) The coil of claim 20, wherein said base portion multiple stimulating elements are spaced apart at a base portion spacing distance, and wherein said return portion multiple stimulating elements are spaced apart at a return portion spacing distance, and wherein said base portion spacing distance is different than said return portion spacing distance. ### Claim 22 (depends on 20) The coil of claim 20, wherein said return portion is positioned at a distance of at least 5 cm from said base portion. ### Claim 23 (depends on 20) The coil of claim 20 wherein said return portion is positioned at a distance of approximately 7-10 cm from said base portion. ### Claim 24 (depends on 20) The coil of claim 20 wherein said body part is a head, and wherein said first area of the body part is a front portion of the head. ### Claim 25 (depends on 24) The coil of claim 24, wherein said base portion is configured to stimulate a prefrontal region of the brain. ### Claim 26 (depends on 20) The coil of claim 20, wherein said return portion is a contacting return portion. ### Claim 27 (depends on 20) The coil of claim 20 wherein said return portion is a protruding return portion. ### Claim 28 (depends on 20) The coil of claim 20, wherein said return portion comprises a contacting return portion and a protruding return portion.