Device and method for electromagnetic stimulation of a process within living organisms
AssigneeQisc B.V.
InventorJohannes Josephus Maria Cuppen
Life of this patent
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Abstract
Device for applying an electromagnetic field for stimulation of a process within a living organism when applied to at least part of a body, comprising a driver for generating a time varying drive signal and a transducer responsive to said drive signal for generating a time varying electromagnetic field signal B(t). The signal B(t) comprises a superposition of two or more periodic base signals bi(t) (i=1, 2, 3, . . . ). The signal bi(t) is defined as: bi(t)=ai*(2exp(−ωit)−(1+exp(−ωiTi/2)) for 0≦t≦Ti/2 and bi(t)=−bi(t−Ti/2) for Ti/2≦t≦Ti, wherein Ti is the period of bi(t), ai is an amplitude of bi(t) and wi is a characteristic frequency determining the shape of the signal bi(t).
Claims14
A device for applying an electromagnetic field for stimulation of a process within a living organism when applied to at least part of a body, comprising:
- a driver configured to generate a time varying drive signal,
- at least one transducer responsive to said drive signal configured to generate a time varying signal B(t) comprising said electromagnetic field, and
- wherein said signal B(t) comprises a superposition of two or more periodic signals bi(t) (i=1, 2, 3, . . . ), each signal bi(t) being defined as:
- bi(t)=ai*(2exp(−ωit)−(1+exp(−ωiTi/2)) for 0≦t≦Ti/2
- bi(t)=−bi(t−Ti/2) for Ti/2≦t≦Ti
- wherein Ti is the period of bi(t), ai is an amplitude of bi(t) and ωi is a characteristic frequency determining the temporal shape of the signal bi(t).
A device for electromagnetic field stimulation of a process within a living organism when applied to at least part of a body, comprising:
- driver configured to generate a time varying drive signal,
- at least one transducer responsive to said drive signal configured to generate a time varying electromagnetic field and wherein said electromagnetic field contains a superposition of at least two periodic functions, each of said functions having a characteristic frequency ωo determining the shape of said functions,
- wherein said device further comprises a pulse width modulation amplifier and/or a signal compensator configured to compensate said drive signal for deviations in the characteristic frequency of said transducer ωi=R/L from said characteristic frequency ωo arranged between said driver and said transducer.
A method for applying an electromagnetic field for stimulation of a process within a living organism when applied to at least part of a body, comprising:
- generating a time varying drive signal,
- using at least one transducer responsive to said drive signal for generating a time varying signal B(t) comprising said electromagnetic field, and
- wherein said signal B(t) comprises a superposition of at least two periodic signals bi(t) (i=1, 2, 3, . . . ), each signal bi(t) being defined as:
- bi(t)=ai*(2exp(−ωit)−(1+exp(−ωiTi/2)) for 0≦t≦Ti/2
- bi(t)=−bi(t−Ti/2) for Ti/2≦t≦Ti
- wherein Ti is the period of bi(t), a, is an amplitude of bi(t) and ωi is a characteristic frequency determining the shape of the signal bi(t).
Dependencies are inferred from the claim text.