Patent RU-2205043-C1 (RU)
Title: Method and device for producing magnetotherapeutic treatment signals
Inventor: BORISOV A G
IPC: A61N2/02
Filed: 2001-12-13
Granted: 2003-05-27
Abstract: FIELD: medicine; medical engineering. SUBSTANCE: method involves supplying electric signal as periodically repeating binary impulse sequence with period τ S  = kN S /f 0 , where k is the constant coefficient, f 0  - is the reference frequency and constant length N S  = p 0 +p 1  where p 0  is the number of sequence intervals having logical zero level, p 1  - is the number of sequence intervals having logical unity level to inductor within preset time intervals Δt i , where i=  is the current step number, m is the number of treatment steps within one time period T. The impulse sequence is repeated during each interval Δt i  Δt i /τ S  times. Beside that, two-leveled electric signal defining polarity is built within each time interval Δt i . One of signal levels is associated with direct magnetic induction vector direction produced by field inductor and the other one with the reversed direction. Binary sequence creation in each time interval of Δt i  with frequency f im  = 1/t im  = f 0 /N D , where t im  is the impulse succession frequency, N D  is variable coefficient calculated in automated or manual mode and unity level voltage interval durations are equal to τ p1  = p 1 •t im  = p 1 •N D /f 0 . The so built binary impulse sequence is converted into electric signal having electric current level   of  , where   is the binary impulse sequence voltage mean value at time period of τ S ; U im - is the binary impulse sequence impulse voltage amplitude, R is the inductor winding resistance. τ p1 ≤τ S  being the case (when N D ≤kN S /p 1 ), signal with zero electric current level is supplied to inductor on terminating the binary impulse sequence during time interval lasting until the next impulse of f S  frequency has come. τ p1 >τ S  being the case (when N D >kN S /p 1 ), binary impulse sequence supply starts with the first interval independent of the number of intervals and their levels remained in the current sequence. The device has reference voltage bus connected to potential inputs of magnetic treatment production unit each of which has key, filter and polarity switch unit connected in series. The polarity switch unit is connected to an inductor or inductor section. The potential inputs of the magnetic treatment production unit are potential inputs of the keys. Data line is connected to information processing inputs of binary impulse sequence setter, polarity code memory unit and clock time durations code memory unit. Reference voltage oscillator is connected to device input with its input and to subtracting step duration counter input with its output which information processing inputs are connected to the clock time durations code memory unit. The data bus is connected to binary sequence counter and step counter parallel recording inputs which outputs are connected to polarity memory unit and step duration memory unit address inputs and to address inputs of higher stages of binary sequence memory unit which outputs are connected to some inputs of AND-gates which outputs are connected to control inputs of keys. Polarity memory unit outputs are connected to polarity switch control inputs. Step duration output is connected to counting input of step counter. Reference voltage oscillator output is connected to non-controllable frequency divider input connected to one trigger input with its output and to prohibiting input of binary sequence counter overloading output of which is connected to the other trigger output which information processing outputs are connected to address inputs of lower stages of binary sequence device. Reference voltage oscillator output is also connected to clock time input of controllable frequency divider and its output is connected to counting input of the binary sequence device. Trigger output is connected to the other output of coincidence circuit and to other inputs of the AND-gates. EFFECT: wide range of functional features; enhanced effectiveness of treatment; improved magnetic field intensity control. 3 cl, 3 dwg