Energy based fat reduction

• US 9,833,639 B2
• Filed: 07/14/2017
• Issued: 12/05/2017
• Est. Priority Date: 10/06/2004
• Status: Active Grant

• Current Assignee: Guided Therapy Systems Llc
• Original Assignee: Guided Therapy Systems Llc
• Inventors: Slayton, Michael H., Barthe, Peter G.
• Primary Examiner(s): Peng, Bo J
• Application Number:
  US15/650,525
• Publication Number:
  US 20170312549A1
• Time in Patent Office: 144 Days
• CPC Class Codes: A61B 2090/378 using ultrasound
• CPC Class Codes: A61B 5/4869 Determining body composition
• CPC Class Codes: A61B 8/0858 involving measuring tissue layers, e.g. skin, interfaces
• CPC Class Codes: A61B 8/14 Echo-tomography
• CPC Class Codes: A61B 8/429 characterised by determining or monitoring the contact between the transducer and the tissue
• CPC Class Codes: A61B 8/4455 Features of the external shape of the probe, e.g. ergonomic aspects
• CPC Class Codes: A61B 8/4483 characterised by features of the ultrasound transducer
• CPC Class Codes: A61B 8/483 involving the acquisition of a 3D volume of data
• CPC Class Codes: A61N 2007/0008 Destruction of fat cells
• CPC Class Codes: A61N 2007/0052 using the same transducer for therapy and imaging
• CPC Class Codes: A61N 2007/027 with multiple foci created simultaneously
• CPC Class Codes: A61N 7/00 Ultrasound therapy lithotripsy A61B17/22, A61B17/225; massage using supersonic vibration A61H23/00 ; using ultrasound for introducing media into the body A61M37/0092
• CPC Class Codes: A61N 7/02 Localised ultrasound hyperthermia hyperthermia in general A61F7/00
• CPC Class Codes: B06B 1/0607 using multiple elements B06B1/064 and B06B1/0688 take precedence
• CPC Class Codes: B06B 1/0622 on one surface
• CPC Class Codes: G01S 15/8906 Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
• CPC Class Codes: G01S 15/899 Combination of imaging systems with ancillary equipment
• CPC Class Codes: G01S 15/8993 Three dimensional imaging systems
• CPC Class Codes: G01S 7/5208 with integration of processing functions inside probe or scanhead
• CPC Class Codes: H05K 999/99 dummy group

Abstract

Methods for non-invasive fat reduction can include targeting a region of interest below a surface of skin, which contains fat and delivering ultrasound energy to the region of interest. The ultrasound energy generates a thermal lesion with said ultrasound energy on a fat cell. The lesion can create an opening in the surface of the fat cell, which allows the draining of a fluid out of the fat cell and through the opening. In addition, by applying ultrasound energy to fat cells to increase the temperature to between 43 degrees and 49 degrees, cell apoptosis can be realized, thereby resulting in reduction of fat.

Claims

1. An ultrasound treatment device for treatment of fat, the device comprising:

an ultrasound probe comprising a motion mechanism and a therapy component,

wherein the therapy component comprises;

a piezoelectric ultrasound therapy element that delivers ultrasound energy at a frequency of between 2 MHz to 10 MHz,

wherein the piezoelectric ultrasound therapy element is spherically focused or cylindrically focused,

wherein the piezoelectric ultrasound therapy element is configured for delivery of energy at a temperature sufficient to coagulate at least a portion of a plurality of fat lobuli at a depth under a skin surface,

wherein the piezoelectric ultrasound therapy element is connected to the motion mechanism,

wherein the ultrasound probe is configured for acoustic coupling to the skin surface,

wherein the motion mechanism comprises an encoder configured to determine movement and position of the piezoelectric ultrasound therapy element,

wherein the motion mechanism moves the piezoelectric ultrasound therapy element to form a plurality of thermal foci at the depth for coagulating the at least a portion of the plurality of fat lobuli.

2. The device of claim 1, further comprising a user control switch to activate the piezoelectric ultrasound therapy element,

wherein the ultrasound energy increases a speed at which fat metabolizes according to Arrhenius Law:

Y=A·

e<sup>−

B/T</sup>, where Y is a yield of metabolic reaction, A and B are constants, and T is a temperature in degrees Kelvin.

3. The device of claim 1, further comprising a control system and a monitoring system,

wherein the control system comprises a processor,

wherein the monitoring system is configured to monitor a treatment parameter, wherein the treatment parameter measured comprises a temperature of a tissue below the skin surface.

4. The device of claim 1,

wherein the motion mechanism is configured to form a plurality of thermal lesions along a line at the depth in a region of interest by moving the piezoelectric ultrasound therapy element.

5. The device of claim 1, further comprising an acoustic coupler between the ultrasound probe and the skin surface,

wherein the motion mechanism is configured for any one of the group consisting of linear, rotational, and variable movement of the piezoelectric ultrasound therapy element within the ultrasound probe.

6. The device of claim 1,

wherein the encoder is configured for monitoring a position of the piezoelectric ultrasound therapy element on the motion mechanism inside the ultrasound probe,

wherein the piezoelectric ultrasound therapy element is configured to deliver the energy at the depth below the skin surface.

7. The device of claim 1, further comprising a monitoring system,

wherein the monitoring system is configured to monitor a treatment parameter, wherein the treatment parameter comprises a temperature of a tissue below the skin surface,

wherein the ultrasound probe further comprises a temperature monitoring sensor,

wherein the piezoelectric ultrasound therapy element is configured to increase the temperature of the tissue to a range of 43 to 49 degrees Celsius,

wherein the ultrasound energy is delivered with a treatment power of between 1 W and 50 W.

8. The device of claim 1, further comprising a piezoelectric ultrasound imaging element and an image display.

9. An ultrasound treatment probe for treatment of fat, the probe comprising a housing, a therapy component, and a motion mechanism,

wherein the therapy component comprises a cylindrically focused piezoelectric ultrasound therapy element,

wherein the cylindrically focused piezoelectric ultrasound therapy element delivers ultrasound energy at a frequency of between 750 kHz to 20 MHz,

wherein the cylindrically focused piezoelectric ultrasound therapy element is configured for delivery of ultrasound energy at a temperature sufficient to coagulate one or more fat lobuli at a depth under a skin surface,

wherein a portion of the housing is configured for acoustic coupling to the skin surface;

and

wherein the cylindrically focused piezoelectric ultrasound therapy element is connected to the motion mechanism,

wherein the motion mechanism comprises an encoder,

wherein the motion mechanism moves the cylindrically focused piezoelectric ultrasound therapy element to coagulate the fat lobuli.

10. The probe of claim 9,

wherein the housing further comprises a piezoelectric ultrasound imaging element,

wherein the piezoelectric ultrasound imaging element is configured for imaging a region of interest under the skin surface, wherein the region of interest comprises the fat lobuli.

11. The probe of claim 9,

wherein the cylindrically focused piezoelectric ultrasound therapy element delivers ultrasound energy at a frequency of between 2 MHz to 10 MHz, and

wherein the ultrasound energy increases a speed at which fat metabolizes according to Arrhenius Law:

Y=A·

e<sup>−

B/T</sup>, where Y is a yield of metabolic reaction, A and B are constants, and T is a temperature in degrees Kelvin.

12. The probe of claim 9,

wherein the cylindrically focused piezoelectric ultrasound therapy element is configured to deliver the ultrasound energy up to 5.5 cm below the skin surface,

wherein the ultrasound energy is delivered with a treatment power of between 1 W and 50 W.

13. An ultrasound treatment device for treatment of fat, the device comprising:

an ultrasound probe comprising a motion mechanism and a therapy component,

wherein the therapy component comprises a piezoelectric ultrasound therapy element,

wherein a portion of the ultrasound probe is configured for acoustic coupling to a skin surface;

wherein the piezoelectric ultrasound therapy element is configured for delivery of ultrasound energy to a region of interest under the skin surface,

wherein the piezoelectric ultrasound therapy element is configured to coagulate at least a portion of a plurality of fat lobuli at a depth under the skin surface,

wherein the piezoelectric ultrasound therapy element is connected to the motion mechanism,

wherein the motion mechanism comprises an encoder,

wherein the motion mechanism moves the piezoelectric ultrasound therapy element to form a plurality of thermal lesions at the portion of the plurality of fat lobuli at the depth for reducing an appearance of fat.

14. The device of claim 13,

wherein the piezoelectric ultrasound therapy element delivers the ultrasound energy at a frequency of between 2 MHz to 10 MHz,

wherein the piezoelectric ultrasound therapy element is configured to deliver the ultrasound energy at the depth below the skin surface.

15. The device of claim 13, wherein the ultrasound energy is configured for heating the plurality of fat lobuli to a temperature in a range of 43 to 49 degrees Celsius.

16. The device of claim 13, further comprising a monitoring system,

wherein the monitoring system is configured to monitor a treatment parameter, wherein the treatment parameter measured comprises a temperature of the tissue below the skin surface,

wherein the ultrasound probe further comprises a temperature monitoring sensor,

wherein the control system comprises a spatial control and a temporal control, the spatial control and the temporal control controlling the delivery of energy to heat the plurality of fat lobuli at the depth under the skin surface.

17. The device of claim 13, further comprising a user control switch to activate the piezoelectric ultrasound therapy element and wherein the ultrasound energy increases a speed at which fat metabolizes according to Arrhenius Law:

Y=A·

e<sup>−

B/T</sup>, where Y is a yield of metabolic reaction, A and B are constants, and T is a temperature in degrees Kelvin.

18. The device of claim 13, wherein the control system comprises:

an input device and a power supply.

19. The device of claim 13, wherein the piezoelectric therapy element is a spherically focused.

20. The device of claim 13, wherein the piezoelectric therapy element is a cylindrically focused.