Magnetic stimulation device

• US 10,471,270 B2
• Filed: 12/24/2015
• Issued: 11/12/2019
• Est. Priority Date: 12/25/2014
• Status: Active Grant

• Current Assignee: Teijin Limited
• Original Assignee: Teijin Pharma Limited (Teijin Limited)
• Inventors: Hotani, Yurika
• Primary Examiner(s): Matthews, Christine H
• Application Number:
  US15/524,324
• Publication Number:
  US 20170333725A1
• Time in Patent Office: 1,419 Days
• CPC Class Codes: A61N 2/006 for magnetic stimulation of nerve tissue
• CPC Class Codes: A61N 2/008 for pain treatment or analgesia
• CPC Class Codes: A61N 2/02 using magnetic fields produced by coils, including single turn loops or electromagnets A61N2/12 takes precedence

Abstract

A magnetic stimulation device includes an excitation coil, a coil driving power supply configured to supply a current having a specific current waveform pattern to the excitation coil, and a coil type detection device configured to distinguish a type of the excitation coil connected to the coil driving power supply, among a plurality of excitations coils. The coil driving power supply includes a control unit configured to control the coil driving power supply to select the specific current waveform pattern among a plurality of current waveform patterns predetermined for each of the plurality of excitation coils, based on the type of the excitation coil distinguished by the coil type detection device and supply the current with the specific current waveform pattern to the excitation coil.

Claims

1. A magnetic stimulation device for providing a magnetic stimulation to a body of a patient, the magnetic stimulation device comprising:

an excitation coil;

a coil driving power supply to which the excitation coil is configured to be connected and which is configured to supply a current having a specific current waveform pattern to the excitation coil, wherein a magnetic field is generated by applying the specific current waveform pattern to the excitation coil, and wherein the excitation coil is configured to be selected from a plurality of excitations coils of different coil types; and

a coil type detection device configured to distinguish a type of the excitation coil connected to the coil driving power supply, among the plurality of excitation coils,

wherein the coil driving power supply comprises a control unit configured to control the coil driving power supply to select the specific current waveform pattern among a plurality of current waveform patterns predetermined for each of the plurality of excitation coils, based on the type of the excitation coil distinguished by the coil type detection device and supply the current with the selected specific current waveform pattern to the excitation coil.

2. The magnetic stimulation device according to claim 1, wherein the coil type detection device comprises:

coil type identification terminal disposed at a connector of the excitation coil; and

a coil type identification terminal detector disposed in the coil driving power supply, and configured to connect to the coil type identification terminal of the connector of the excitation coil and detect information related to the connected coil type identification terminal,

wherein the control unit is further configured to identify the specific current waveform pattern to be supplied to the excitation coil based on the information detected by the coil type identification terminal detector.

3. The magnetic stimulation device according to claim 2, wherein the coil type identification terminal comprises a resistor, and

the control unit is further configured to identify the specific current waveform pattern to be supplied to the excitation coil based on a divided voltage potential due to resistance of the resistor.

4. The magnetic stimulation device according to claim 1, wherein the coil type detection device comprises an excitation coil impedance measurement device, and

the control unit is further configured to identify the specific current waveform pattern to be supplied using a measurement result provided by the excitation coil impedance measurement device.

5. The magnetic stimulation device according to claim 1, wherein the coil type detection device comprises a connector shape identification device,

each of the plurality of excitation coils is provided with a connector comprising a connector shape feature having a different shape for each of the plurality of current waveform patterns, the connector of each of the plurality of excitation coils is configured to connect the plurality of excitation coils to the coil driving power supply,

wherein the connector shape identification device is configured to identify the connector shape feature of the connector of the excitation coil connected to the coil driving power supply, and

the control unit is further configured to identify the specific current waveform pattern to be supplied to the excitation coil based on the identified connector shape feature.

6. The magnetic stimulation device according to claim 1, wherein the coil type detection device comprises a current waveform pattern code storage device disposed at a connector of the excitation coil, the connected configured to connect with the coil driving power supply,

the coil type detection device is further configured to read a current waveform pattern code stored in the current waveform pattern code storage device, and transmit the current waveform pattern code representing the specific current waveform pattern of the excitation coil, to the control unit, through a cable, a radio, or an optical signal, and

the control unit is further configured to control the coil driving power supply to supply the current with the specific current waveform pattern based on the current waveform pattern code.

7. The magnetic stimulation device according to claim 1, wherein the specific current waveform pattern is a biphasic wave that flows the current in a specific direction followed by flowing the current in a reverse direction.

8. The magnetic stimulation device according to claim 1, wherein a frequency of the specific current waveform pattern is variable.

9. A transcranial magnetic stimulation system comprising the magnetic stimulation device according to claim 1, the transcranial magnetic stimulation system further comprising:

a memory configured to store, as a treatment log, information related to the magnetic field induced in the patient by the specific current waveform pattern supplied by the coil driving power supply together with biological information of the patient.

10. The magnetic stimulation device according to claim 2, wherein the plurality of excitation coils comprises a plurality of coil type identification terminals, respectively, the plurality of coil type identification terminals being different from each other, and

the coil type identification terminal is one of the plurality of coil type identification terminals.

11. The magnetic stimulation device according to claim 1, wherein each of the plurality of excitation coils comprises a plurality of coil type identification terminals, respectively, the plurality of coil type identification terminals being different from each other,

each of the plurality of coil type identification terminals is disposed at a connector of each of the plurality of excitation coils, respectively, and provides information related to the type of the excitation coil, each connector configured to connect to the coil driving power supply, and

the control unit is further configured to identify the specific current waveform pattern to be supplied to the excitation coil based on the information detected by the coil type detection device from a coil type identification terminal of the connector of the excitation coil connected to the coil driving power supply, among the plurality of coil type identification terminals.