Energy based fat reduction

• US 10,603,519 B2
• Filed: 02/11/2019
• Issued: 03/31/2020
• 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 Joseph
• Application Number:
  US16/272,427
• Publication Number:
  US 20190184203A1
• Time in Patent Office: 414 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 probe, comprising:

a motion mechanism and a piezoelectric ultrasound transducer,

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

wherein the piezoelectric ultrasound transducer is configured for focusing energy at a temperature sufficient to coagulate a plurality fat cells in one or more fat lobuli at a depth under a skin surface,

wherein the piezoelectric ultrasound transducer is mechanically connected to the motion mechanism,

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

wherein the motion mechanism is configured for connection to an encoder to determine movement and position of the piezoelectric ultrasound transducer,

wherein the motion mechanism moves the piezoelectric ultrasound transducer to form a plurality of thermal foci at the depth for coagulating the plurality of fat cells in the one or more fat lobuli.

2. The probe of claim 1,

wherein the piezoelectric ultrasound transducer is configured for a spherical focus or a cylindrically focus,

wherein the probe is disposable,

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 probe of claim 1, further comprising a control system, a user control switch to activate the piezoelectric ultrasound transducer, 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 probe of claim 1,

wherein the probe is disposable,

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 transducer.

5. The probe of claim 1, further comprising further comprising a storage system comprising probe identification and probe usage history, and 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 transducer within the ultrasound probe.

6. The probe of claim 1,

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

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

7. The probe 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 transducer 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,

wherein the probe is reusable.

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

9. An ultrasound probe, comprising:

a housing, a piezoelectric ultrasound transducer, and a motion mechanism,

wherein the piezoelectric ultrasound transducer is spherically or cylindrically focused,

wherein the piezoelectric ultrasound transducer delivers ultrasound energy at a frequency of between 750 kHz to 20 MHz,

wherein the piezoelectric ultrasound transducer is configured for delivery of ultrasound energy at a temperature sufficient to coagulate fat cells in fat lobuli at one or more depths under a skin surface,

wherein the piezoelectric ultrasound transducer is connected to the motion mechanism,

wherein the motion mechanism is configured for connection to an encoder,

wherein the motion mechanism moves the piezoelectric ultrasound transducer inside the housing to coagulate the fat cells.

10. The probe of claim 9, further comprising a storage system comprising probe identification and probe usage history,

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 cells in fat lobuli.

11. The probe of claim 9,

wherein the probe is disposable,

wherein the piezoelectric ultrasound transducer 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 piezoelectric ultrasound transducer is configured to deliver the ultrasound energy in a line focus at a depth of 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 probe, comprising:

a piezoelectric ultrasound therapy transducer connected to a motion mechanism,

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

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

wherein the piezoelectric ultrasound therapy transducer is configured to coagulate a plurality of fat cells at one or more depths under the skin surface,

wherein the motion mechanism is configured to operate with an encoder,

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

14. The probe of claim 13,

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

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

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

16. The probe 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 ultrasound probe is configured for connection to a control system, 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 cells at the depth under the skin surface.

17. The probe of claim 13, further comprising a storage system comprising probe identification and probe usage history, and a user switch to activate the piezoelectric ultrasound therapy transducer 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 probe of claim 13, further comprising a storage system comprising probe identification and probe usage history, wherein the probe is reusable and is configured to connect to an input device and a power supply.

19. The probe of claim 13, wherein the piezoelectric therapy transducer is spherically focused.

20. The probe of claim 13, wherein the piezoelectric therapy transducer is cylindrically focused.