Combination of radiofrequency and magnetic treatment methods

• US 10,124,187 B2
• Filed: 05/10/2016
• Issued: 11/13/2018
• Est. Priority Date: 04/28/2015
• Status: Active Grant

• Current Assignee: BTL Medical Solutions As
• Original Assignee: BTL Holdings Limited
• Inventors: Schwarz, Toma{hacek over (s)}, Prouza, Ondra
• Primary Examiner(s): Gilbert, Samuel
• Application Number:
  US15/151,012
• Publication Number:
  US 20160317827A1
• Time in Patent Office: 917 Days
• Field of Search: 600 9- 15
• CPC Class Codes: A61B 18/1815 using microwaves
• CPC Class Codes: A61B 18/20 using laser
• CPC Class Codes: A61B 2018/00464 Subcutaneous fat, e.g. liposuction, lipolysis
• CPC Class Codes: A61B 2018/00476 Hair follicles
• CPC Class Codes: A61B 2018/147 Electrodes transferring energy by capacitive coupling, i.e. with a dielectricum between electrode and target tissue
• CPC Class Codes: A61N 1/403 for thermotherapy, e.g. hyperthermia
• CPC Class Codes: A61N 2/002 in combination with another treatment
• CPC Class Codes: A61N 2/006 for magnetic stimulation of nerve tissue
• CPC Class Codes: A61N 2/02 using magnetic fields produced by coils, including single turn loops or electromagnets A61N2/12 takes precedence
• CPC Class Codes: A61N 2/06 using magnetic fields produced by permanent magnets A61N2/12 takes precedence
• CPC Class Codes: A61N 5/025 Warming the body, e.g. hyperthermia treatment

Abstract

Devices and methods for contactless skin treatment use feedback power control for non-invasive treatment of skin and human tissue. Electromagnetic energy heats skin or tissue. A feedback system measures an output physical quantity before the output of electromagnetic waves from the device into the patient. Alternatively the feedback system scans values of a physical quantity on or near the patient. The devices and methods allow for delivering the optimum amount of energy to the patient while reducing the thermal load of the device. Methods and an apparatus for treatment of target biological structure by combination of magnet treatment and electromagnetic treatment. The method and apparatus may be used for aesthetic applications, e.g. cellulite treatment, body shaping, skin rejuvenation or enhancing skin appearance.

Claims

1. A method of treatment of a target biological structure of a patient using a treatment device which includes a connection to an energy source, a high-frequency generator, a radiofrequency electrode, an energy storage device electrically connected to a switching device and a magnetic field generating device, comprising:

a. charging the energy storage device from the energy source;

b. providing energy from the energy storage device to the magnetic field generating device to generate a time-varying magnetic field;

c. applying the time-varying magnetic field to the patient;

d. providing energy from the energy source to the high-frequency generator in order to provide the energy to the radiofrequency electrode;

e. generating radiofrequency waves with a frequency of at least 1 MHz by the radiofrequency electrode;

f. applying the radiofrequency waves to the patient; and

g. heating the target biological structure by the radiofrequency waves;

h. wherein the magnetic field has a repetition rate in a range of 1 to 100 Hz;

i. wherein a voltage drop between successive peak amplitudes in the energy storage device is up to 21%.

2. A method for treating a biological structure of a patient by a time-varying magnetic field and radiofrequency waves, comprising:

a. providing energy from an energy source to an energy storage device and/or to a high-frequency generator;

b. providing energy from the energy storage device to a magnetic field generating device in order to generate the time-varying magnetic field with a magnetic flux density in a range of 0.1 to 7 T, a repetition rate in a range of 1 to 700 Hz and with an impulse duration in a range of 10 to 900 μ

s;

wherein the magnetic field generating device includes a conductor diameter less than 3 mm;

c. providing energy from the high-frequency generator to a balun transformer in order to convert an unbalanced radiofrequency signal to a balanced radiofrequency signal and providing the balanced radiofrequency signal to a transmatch in order to adjust an impedance of at least one radiofrequency electrode to correspond with an impedance of the biological structure of the patient; and

d. generating radiofrequency waves with a frequency in a range of 1 MHz to 900 GHz and with energy up to 400 W by the at least one radiofrequency electrode;

e. applying the radiofrequency waves simultaneously with the time-varying magnetic field to the patient; and

f. remodeling a target biological structure by simultaneous heating the biological structure and contracting a muscle of a target body area.

3. The method of claim 2 wherein the magnetic field generating device includes a litz-wire.

4. The method of claim 2 wherein a voltage drop between two successive peak amplitudes output from the energy storage device is not higher than 21%.

5. The method of claim 2 wherein the energy storage device is in a serial connection with the magnetic field generating device.

6. The method of claim 2 further comprising directing a cooling media in a direction parallel to the magnetic field generating device.

7. The method of claim 2 further comprising directing a cooling media over at least upper and lower sides of the magnetic field generating device.

8. The method of claim 2 with the magnetic field generating device including a blower for directing a cooling media and wherein the blower is on a circumference of the magnetic field generating device.

9. The method of claim 2 further comprising operating the device including the magnetic field generating device in order to maintain a temperature of a casing of the magnetic field generating device up to 43°

C.

10. A method for treatment of a biological structure of a patient by a time-varying magnetic field and radiofrequency waves, comprising:

a. providing energy from an energy source to an energy storage device and/or to a high-frequency generator;

b. providing energy from the energy storage device to a magnetic field generating device in order to generate the time-varying magnetic field;

c. applying the time-varying magnetic field to the patient;

d. providing energy from the high-frequency generator to a transmatch in order to adjust an impedance of a radiofrequency electrode to correspond with an impedance of a biological structure of the patient;

e. generating the radiofrequency waves by the radiofrequency electrode with a frequency of at least 1 MHz;

e. applying the radiofrequency waves to the patient; and

f. heating the biological structure by the radiofrequency waves.

11. The method of claim 10 wherein the magnetic field generating device includes a litz-wire having a conductor diameter less than 3 mm.

12. The method of claim 10 wherein a voltage drop between two successive peak amplitudes output from the energy storage device is not higher than 21%.

13. The method of claim 10 wherein the energy storage device is in a serial connection with the magnetic field generating device.

14. The method of claim 10 wherein the magnetic field generating device includes a litz-wire, further comprising providing energy from the high-frequency generator to a balun transformer in order to convert an unbalanced radiofrequency signal to a balanced radiofrequency signal.

15. The method of claim 10 further comprising directing a cooling media in a direction parallel to the magnetic field generating device.

16. The method of claim 10 further comprising directing a cooling media over at least upper and lower sides of the magnetic field generating device.

17. The method of claim 10 further comprising directing a cooling media on a circumference of the magnetic field generating device.

18. The method of claim 10 further comprising operating a treatment device including the magnetic field generating device in order to maintain a temperature of a casing of the magnetic field generating device up to 43°

C.

19. A method for treating a biological structure of a patient by a time-varying magnetic field and radiofrequency waves comprising:

a. providing energy from an energy source to an energy storage device and/or to a high-frequency generator;

b. providing energy from the energy storage device to a magnetic field generating device in order to generate the time-varying magnetic field with a magnetic flux density in a range of 0.15 to 7 T, a repetition rate in a range of 1 to 700 Hz, and with an impulse duration in a range of 10 to 900 μ

s;

c. providing energy from the high-frequency generator to a radiofrequency electrode in order to generate the radiofrequency waves with a frequency in a range of 1 MHz to 900 GHz;

d. applying the time-varying magnetic field to at least one body region including thighs, buttocks, abdomen, hips or arms of the patient in order to cause a muscle contraction and the radiofrequency waves heating the at least one body region of the patient; and

e. using a signal from a sensor measuring a physical quantity including one or more of voltage, current, a phase shift, a magnetic flux density, a temperature, an electric field intensity, a distance or an impedance in order to adjust an output power applied to the patient.

20. The method of claim 19 wherein the magnetic field generating device includes a conductor diameter less than 3 mm.

21. The method of claim 19 wherein the magnetic field generating device includes a litz-wire.

22. The method of claim 19 wherein a voltage drop between two successive peak amplitudes output from the energy storage device is not higher than 21%.

23. The method of claim 19 wherein the energy storage device is in a serial connection with the magnetic field generating device.

24. The method of claim 19 further comprising directing a cooling media in a direction parallel to the magnetic field generating device.

25. The method of claim 19 further comprising directing a cooling media by a blower on a circumference of the magnetic field generating device.

26. The method of claim 19 further comprising operating a treatment device including the magnetic field generating device to maintain a temperature of a casing of the magnetic field generating device up to 43°

C.

27. The method of claim 19 wherein the sensor is in a treatment device including the magnetic field generating device and/or the radiofrequency electrode.

28. The method of claim 19 further comprising causing a repeated muscle contraction.

29. The method of claim 19 further comprising applying the radiofrequency waves with energy up to 400 W.

30. The method of claim 19 further comprising providing energy from the high-frequency generator to a balun transformer in order to convert an unbalanced radiofrequency signal to a balanced radiofrequency signal and providing the balanced radiofrequency signal to a transmatch in order to adjust an impedance of a radiofrequency electrode to correspond with an impedance of the biological structure of the patient.