US-12623088-B2 - Aesthetic method of biological structure treatment by magnetic field

Abstract

In methods for treating a patient, a time varying magnetic field is applied to a patient's body and causes a muscle contraction. The time-varying magnetic field may be monophasic, biphasic, polyphasic and/or static. The method may reduce adipose tissue, improve metabolism, blood and/or lymph circulation. The method may use combinations of treatments to enhance the visual appearance of the patient.

Inventors

• Tomás Schwarz
• Ondra Prouza

Assignees

• BTL MEDICAL SOLUTIONS A.S.

Dates

Publication Date

20260512

Application Date

20230417

Claims (20)

1. 1 . A device for treating a patient, the device comprising: an applicator comprising: a magnetic field generating device configured to generate a time-varying magnetic field, wherein the time-varying magnetic field comprises a plurality of biphasic magnetic impulses, wherein the plurality of biphasic magnetic impulses comprises a biphasic magnetic impulse having an impulse duration in a range of 3 μs to 1000 μs; and an electrode configured to apply a radiofrequency treatment to the patient; an energy storage device comprising a capacitor configured to provide energy to the magnetic field generating device to generate the time-varying magnetic field; and a switching device configured to discharge the energy storage device to the magnetic field generating device in order to generate the time-varying magnetic field, wherein the radiofrequency treatment is configured to cause heating of a body region of the patient.
2. 2 . The device of claim 1 , further comprising a belt configured to couple the applicator to the patient.
3. 3 . The device of claim 1 , wherein the applicator is configured to be coupled to the patient by an adhesive layer.
4. 4 . The device of claim 1 , wherein the device is configured to apply a treatment sequence having a repetition rate of the magnetic impulses in a range of 5 Hz to 50 Hz.
5. 5 . The device of claim 1 , wherein the magnetic field generating device comprises a flat magnetic coil.
6. 6 . The device of claim 5 , wherein the time-varying magnetic field has a magnetic flux density in a range of 0.8 Tesla to 7 Tesla, and wherein the time-varying magnetic field is configured to cause a muscle contraction within the body region of the patient.
7. 7 . The device of claim 1 , wherein the time-varying magnetic field comprises a second plurality of magnetic impulses having a first repetition rate and a third plurality of magnetic impulses having a second repetition rate that is different than the first repetition rate, and wherein an amplitude of a magnetic flux density of the second plurality of magnetic impulses is modulated such that the amplitude of the magnetic flux density of the second plurality of magnetic impulses has a trapezoid shape.
8. 8 . A device for treating a patient, the device comprising: an applicator comprising: a radiofrequency electrode configured to provide a radiofrequency treatment to the patient; and a magnetic field generating device configured to generate a time-varying magnetic field having a magnetic flux density in a range of 0.1 Tesla to 7 Tesla, wherein the time-varying magnetic field comprises a plurality of biphasic magnetic impulses including a magnetic impulse with an impulse duration in a range of 3 μs to 1000 μs; an inlet configured to direct a cooling fluid into the applicator to cool the magnetic field generating device; an energy storage device configured to provide energy to the magnetic field generating device; and a switching device configured to discharge the energy storage device to the magnetic field generating device, wherein the radiofrequency treatment is configured to provide heating of a body region of the patient.
9. 9 . The device of claim 8 , wherein the time-varying magnetic field is configured to cause a muscle contraction within the body region of the patient.
10. 10 . The device of claim 8 , wherein the device is configured to modulate a magnetic flux density of the biphasic magnetic impulses such that an amplitude of the magnetic flux density forms a trapezoidal envelope.
11. 11 . The device of claim 8 , wherein the device is configured to modulate a magnetic flux density of the biphasic magnetic impulses such that an amplitude of the magnetic flux density forms a rectangular envelope.
12. 12 . The device of claim 8 , wherein the applicator is configured to be coupled to the patient by an adhesive layer.
13. 13 . The device of claim 8 , wherein the applicator is configured to be coupled to the patient by a belt.
14. 14 . The device of claim 13 , wherein the cooling fluid comprises air or water.
15. 15 . A device for treating a patient, the device comprising: an applicator comprising: a magnetic coil configured to apply a time-varying magnetic field to a body region of the patient; and a radiofrequency electrode configured to provide a radiofrequency treatment, wherein the radiofrequency treatment is configured to provide heating of the body region of the patient; an energy storage device configured to provide energy to the magnetic coil; an inlet configured to direct a cooling fluid into the applicator to cool the magnetic coil; and a switching device configured to discharge the energy storage device to the magnetic coil, wherein the time-varying magnetic field comprises a plurality of magnetic impulses, the magnetic impulses comprising a magnetic impulse having an impulse duration in a range of 3 μs to 1000 μs.
16. 16 . The device of claim 15 , wherein the device is configured to heat the body region of the patient by the radiofrequency treatment to a temperature in a range of 39° C. to 50° C.
17. 17 . The device of claim 15 , wherein the device is configured to apply the plurality of magnetic impulses in a protocol, and wherein the protocol comprises a treatment sequence having a repetition rate of the magnetic impulses in a range of 5 Hz to 50 Hz.
18. 18 . The device of claim 15 , wherein the applicator further comprises an adhesive material configured to fix the applicator in contact with the patient.
19. 19 . The device of claim 15 , wherein the cooling fluid comprises an oil, water, or air.
20. 20 . The device of claim 19 , further comprising a flexible belt configured to couple the applicator to the patient.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This Application is a Continuation of U.S. patent application Ser. No. 17/752,400, filed May 24, 2022, which is a Continuation of U.S. patent application Ser. No. 16/827,330, filed Mar. 23, 2020 and now U.S. Pat. No. 11,524,171, which is a Continuation of U.S. patent application Ser. No. 15/601,719, filed May 22, 2017 now patented as U.S. Pat. No. 10,596,386, which claims priority to each of U.S. Provisional Patent Application Nos. 62/357,679 filed Jul. 1, 2016, 62/440,905 filed Dec. 30, 2016, and 62/440,922 filed Dec. 20, 2016. These applications are incorporated herein by references. FIELD OF THE INVENTION The present invention generally relates to methods using the influence of magnetic and induced electric field on biological structure. The magnetic field is time-varying and high powered therefore the method is based on a value of magnetic flux density sufficient to induce at least partial muscle contraction. BACKGROUND OF THE INVENTION Aesthetic medicine includes all treatments resulting in enhancing a visual appearance and satisfaction of the patient. Patients want to minimize all imperfections including body shape and effects of natural aging. Indeed, patients request quick, non-invasive procedures providing satisfactory results with minimal risks. The most common methods used for non-invasive aesthetic applications are based on application of mechanical waves, e.g. ultrasound or shock wave therapy; or electromagnetic waves, e.g. radiofrequency treatment or light treatment, such as intense pulsed light or laser treatment. The effect of mechanical waves on tissue is based especially on cavitation, vibration and/or heat inducing effects. The effect of applications using electromagnetic waves is based especially on heat production in the biological structure. Skin tissue is composed of three basic elements: epidermis, dermis and hypodermis or so called subcutis. The outer and also the thinnest layer of skin is the epidermis. The dermis consists of collagen, elastic tissue and reticular fibers. The hypodermis is the lowest layer of the skin and contains hair follicle roots, lymphatic vessels, collagen tissue, nerves and also fat forming a subcutaneous white adipose tissue (SWAT). The adipose cells create lobules which are bounded by connective tissue, fibrous septa (retinaculum cutis). Another part of adipose tissue, so called visceral fat, is located in the peritoneal cavity and forms visceral white adipose tissue (VWAT) located between parietal peritoneum and visceral peritoneum, closely below muscle fibers adjoining the hypodermis layer. Existing devices have low efficiency and they waste energy, which limits their use. Eddy currents induced within the coil create engineering challenges. Existing devices contain coils which are made of metallic strips, electric wires or hollow conductors. Since the therapy requires large currents, significant losses are caused by induced eddy currents within the coil. Eddy currents lead to production of unwanted heat and therefore there is need to sufficiently cool the coil. Also, the energy source must be protected during reverse polarity of resonance. This requires using protective circuits which consume significant amounts of energy. Current magnetic aesthetic methods are limited in key parameters which are repetition rate and/or magnetic flux density. All known methods use low values of magnetic flux density and/or low repetition rates which does not allow satisfactory enhancement of visual appearance. As a result, new methods are needed to enhance the visual appearance of the patient. The currently used aesthetic applications don't provide any treatment combining the effect of time-varying magnetic field treatment and conventional treatment, e.g. treatment by electromagnetic field such as radiofrequency treatment. The currently used radiofrequency treatment includes many adverse events such as non-homogenous thermal temperature, insufficient blood and/or lymph flow during and/or after the treatment. Additionally several adverse event such as panniculitis may occur after the treatment. SUMMARY OF THE INVENTION The present methods and devices as described below produce a time varying magnetic field for patient treatment which better optimizes energy use, increases the effectiveness of the treatments and provide a new treatment. The magnetic pulses may be generated in monophasic, biphasic or polyphasic regimes. In a first aspect, the device has one or more coils; a switch; an energy storage device and a connection to an energy source. The coil may be made of insulated wires with a conductor diameter less than 3 mm even more preferably less than 0.5 mm and most preferably less than 0.05 mm. Smaller diameter and individual insulation of the wires significantly reduces self-heating of the coil and therefore increase efficiency of magnetic stimulation device. The coil may be flexibly attached in a casing of device. The casing may