# US 10,870,012 B2 · Biphasic or multiphasic pulse waveform and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,870,012 B2 - Document ID: US10870012B2 - Status: Granted - Kind: B2 - Application number: 15/811,427 - Filed: 2017-11-13 - Published: 2018-03-08 - Granted: 2020-12-22 - Earliest claimed: 2013-06-14 - Assignees: CardioThrive, Inc. - Applicants: CardioThrive, Inc. - Inventors: Douglas M. Raymond; Peter D. Gray; Walter T. Savage; Shelley J. Savage - Web page: https://patentgrep.com/patent/US10870012B2 ## CPC - A61N 1/3906: {characterised by the form of the shockwave} - A61N 1/3912: {Output circuitry therefor, e.g. switches} - A61N 1/3625: {External stimulators} - 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 novel therapeutic biphasic or multiphasic pulse waveform and method are provided. The novel therapeutic biphasic or multiphasic pulse waveform may be used in a defibrillator, or in another medical device that delivers therapeutic electrical stimulation pulses to a patient. ## Claims ### Claim 1 A system for generating a therapeutic waveform, comprising: a pulse waveform generator that generates a waveform with a length of 1-20 ms and having at least one first phase having a first polarity and at least one second phase having a second polarity opposite of the first polarity, the at least one first phase having a leading edge, a trailing edge and a decay slope between the leading edge and the trailing edge and the decay slope having a phase tilt, the at least one second phase having a leading edge, a trailing edge and a decay slope between the leading edge and the trailing edge and the decay slot having a phase tilt; and wherein an amplitude of the leading edge of the at least one first phase of the waveform is less than an amplitude of the leading edge of the at least one second phase of the waveform and a phase timing of the at least one first phase is less than a phase timing of the at least one second phase. ### Claim 2 (depends on 1) The system of claim 1, wherein the waveform has a plurality of first phases and a plurality of second phases that form a multiphasic waveform. ### Claim 3 (depends on 2) The system of claim 2, wherein the multiphasic waveform has alternating first phases and second phases. ### Claim 4 (depends on 2) The system of claim 2, wherein the multiphasic waveform has the plurality of first phases followed by the plurality of second phases. ### Claim 5 (depends on 1) The system of claim 1, wherein the waveform has a single first phase and a single second phase of a biphasic waveform. ### Claim 6 (depends on 1) The system of claim 1, wherein the first phase has a positive polarity and the second phase has a negative polarity. ### Claim 7 (depends on 1) The system of claim 1, wherein the first phase has a negative polarity and the second phase has a positive polarity. ### Claim 8 (depends on 1) The system of claim 1, wherein the waveform has an inter-phase period between the first phase and the second phase with a duration of between 0 and 1500 microseconds. ### Claim 9 (depends on 1) The system of claim 1, wherein the phase tilt of the at least one first phase is the same as the phase tilt of the at least one second phase. ### Claim 10 (depends on 1) The system of claim 1, wherein the phase tilt of the at least one first phase is different from the phase tilt of the at least one second phase. ### Claim 11 A method for generating a therapeutic pulse waveform, comprising: generating, by the pulse waveform generator, a waveform with a length of 1-20 ms and having at least one first phase having a first polarity and at least one second phase having a second polarity opposite of the first polarity, wherein the first phase of the waveform has an amplitude that is less than an amplitude of the second phase of the waveform; controlling a duration and a shaping of each phase of the waveform, the controlling further comprising generating the at least one first phase having a leading edge, a trailing edge and a decay slope between the leading edge and the trailing edge and the decay slope having a phase tilt and generating the at least one second phase having a leading edge, a trailing edge and a decay slope between the leading edge and the trailing edge and the decay slot having a phase tilt; and wherein generating the waveform further comprises generating a waveform in which a phase timing of the at least one first phase is less than a phase timing of the at least one second phase. ### Claim 12 (depends on 11) The method of claim 11, wherein generating the waveform further comprises forming a multiphasic waveform having a plurality of first phases and a plurality of second phases. ### Claim 13 (depends on 12) The method of claim 12, wherein the multiphasic waveform has alternating first phases and second phases. ### Claim 14 (depends on 12) The method of claim 12, wherein the multiphasic waveform has the plurality of first phases followed by the plurality of second phases. ### Claim 15 (depends on 11) The method of claim 11, wherein generating the waveform further comprises forming a biphasic waveform having a single first phase and a single second phase. ### Claim 16 (depends on 11) The method of claim 11, wherein the first phase has a positive polarity and the second phase has a negative polarity. ### Claim 17 (depends on 11) The method of claim 11, wherein the first phase has a negative polarity and the second phase has a positive polarity. ### Claim 18 (depends on 11) The method of claim 11, wherein generating the waveform further comprises having an inter-phase period between the first phase and the second phase with a duration of between 0 and 1500 microseconds. ### Claim 19 (depends on 11) The method of claim 11, wherein the phase tilt of the at least one first phase is the same as the phase tilt of the at least one second phase. ### Claim 20 (depends on 11) The method of claim 11, wherein the phase tilt of the at least one first phase is different from the phase tilt of the at least one second phase.