# US 12,758,787 B2 · Monophasic magnetic stimulator for transcranial magnetic stimulation

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- Number: US 12,758,787 B2
- Document ID: US12758787B2
- Status: Granted
- Kind: B2
- Application number: 18/577,320
- Filed: 2022-07-08
- Published: 2024-10-31
- Granted: 2026-10-13
- Earliest claimed: 2021-07-09
- Assignees: Deymed Diagnostic S.R.O.
- Applicants: Deymed Diagnostic S.R.O.
- Inventors: Miroslav Moravec
- Web page: https://patentgrep.com/patent/US12758787B2

## CPC

- A61N 2/006: {for magnetic stimulation of nerve tissue}
- A61N 2/02: using magnetic fields produced by coils, including single turn loops or electromagnets (A61N2/12 takes precedence)
- 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 circuit wiring arrangement of a monophasic stimulator for transcranial magnetic stimulation is described. A stimulation capacitor is connected via a switch and a limiting medium to a source of a stimulation energy while the stimulation capacitor is connected in parallel with a diode and with a braking resistor. The braking resistor is connected in series with the diode. A stimulation coil is further connected in parallel to the stimulation capacitor via a switching thyristor. A braking capacitor is also connected in series with the diode. A discharging resistor is connected in parallel to the braking capacitor. The discharging resistor is connected in series with the diode.

## Claims

### Claim 1

A circuit wiring arrangement of a monophasic stimulator for transcranial magnetic stimulation, comprising:
a stimulation capacitor (C1) connected via a switch(S) and a limiting means (Rp) to a source (U) of a stimulation energy,
a stimulation coil (L1) connected in parallel to the stimulation capacitor (C1) via a switching thyristor (T), wherein
a braking capacitor (C2) connected in series with a diode (D), the braking capacitor (C2) and the diode (D) connected in parallel to the stimulation capacitor (C1), the braking capacitor (C2) arranged to speed up the closing of the diode (D), and
a discharging resistor (R2) connected in parallel to the braking capacitor (C2), the braking capacitor (C2) having an electrical capacity at least equal to or greater than the electrical capacity of the stimulating capacitor (C1).

### Claim 2 (depends on 1)

The circuit wiring arrangement of the monophasic stimulator for transcranial magnetic stimulation according to claim 1, wherein the braking capacitor (C2) has an electrical capacity at least four times bigger than the electrical capacity of the stimulating capacitor (C1).

### Claim 3 (depends on 1)

The circuit wiring arrangement of the monophasic stimulator for transcranial magnetic stimulation according to claim 1, wherein a braking resistor (R1) is connected in series between the diode (D) and the brake capacitor (C2), wherein the discharging resistor (R2) is connected in parallel to both the braking resistor (R1) and the brake capacitor (C2).

### Claim 4 (depends on 1)

The circuit wiring arrangement of the monophasic stimulator for transcranial magnetic stimulation according to claim 1, wherein a snubber (S) is connected in parallel to the switching thyristor (T).

### Claim 5 (depends on 1)

The circuit wiring arrangement of the monophasic stimulator for transcranial magnetic stimulation according to claim 1, wherein the braking capacitor (C2) has a braking capacitor (C2) electrical capacity in the range of four times to ten times the electrical capacity of the stimulation capacitor (C1).

### Claim 6 (depends on 1)

The circuit wiring arrangement of the monophasic stimulator for transcranial magnetic stimulation according to claim 1, wherein a braking resistor (R1) is connected in series between the diode (D) and the brake capacitor (C2), wherein the discharging resistor (R2) is connected in parallel only to the brake capacitor (C2).