Method and system for combined ultrasound treatment

• US 7,530,958 B2
• Filed: 09/24/2004
• Issued: 05/12/2009
• Est. Priority Date: 09/24/2004
• Status: Active Grant

• Current Assignee: Guided Therapy Systems Llc
• Original Assignee: Guided Therapy Systems Llc
• Inventors: Slayton, Michael H., Makin, Inder Raj S., Barthe, Peter G.
• Primary Examiner(s): Winakur; Eric F
• Assistant Examiner(s): BOR, HELENE CATHERINE
• Application Number:
  US10/950,112
• Publication Number:
  US 20060074355A1
• Time in Patent Office: 1,691 Days
• Field of Search: 601 2- 4, 600/437, 600/439
• US Class Current: 601/2
• CPC Class Codes: A61B 8/4472 Wireless probes
• CPC Class Codes: A61B 8/483 involving the acquisition of a 3D volume of data
• CPC Class Codes: A61H 2201/5007 computer controlled
• CPC Class Codes: A61H 23/0245 with ultrasonic transducers, e.g. piezoelectric
• CPC Class Codes: A61N 2007/0008 Destruction of fat cells
• CPC Class Codes: A61N 2007/0073 using multiple frequencies
• CPC Class Codes: A61N 2007/0078 with multiple treatment transducers
• 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

Abstract

A non-invasive method and system for combined ultrasound treatment are provided. An exemplary combined ultrasound treatment system comprises a transducer configured to deliver ultrasound energy to provide two or more energy effects to a region of interest. The energy effects facilitate the initiation of one or more responses in the region of interest. In accordance with an exemplary embodiment of the present invention, a transducer is configured to deliver energy over varying temporal and/or spatial distributions in order to provide energy effects and initiate responses in a region of interest.

Claims

1. An ultrasound system configured for providing treatment comprising:

a single ultrasound transducer comprising a first portion providing a first ultrasound energy effect and a second portion providing a second ultrasound energy effect to a region of interest, wherein said first portion and said first ultrasound energy effect are different from said second portion and said second ultrasound energy effect, and said first ultrasound energy effect comprises an ablative or a hemostatic effect and said second ultrasound energy effect comprise at least ˜

one of non-thermal streaming, hydrodynamic, diathermic, and resonance induced tissue effects;

a control system that is connected to said first portion and to said second portion and configured to operatively control said first portion independently of said second portion; and

wherein said first energy effect and said second energy effect are configured to effect said region of interest to facilitate at least one response in said region of interest and said control system controls said second portion to provide said second energy effect after a delay period after said first energy effect.

2. The ultrasound treatment system according to claim 1, wherein said first portion and said second portion simultaneously provide said first energy effect and said second energy effect to achieve a simultaneous response in said region of interest.

3. The ultrasound treatment system according to claim 1, wherein said region of interest comprises at least one of a superficial, subcutaneous, and an inner region of a patient.

4. The ultrasound treatment system according to claim 1, wherein said single ultrasound transducer comprises a variable-thickness transduction element.

5. The ultrasound treatment system according to claim 1, wherein said first portion comprises a transduction element configured for low frequency treatment and said second portion comprises a transduction element configured for high-frequency treatment.

6. The ultrasound treatment system according to claim 1, wherein said single ultrasound transducer comprises an array configured for providing a focused treatment.

7. The ultrasound treatment system according to claim 1, wherein said ultrasound transducer comprises am electronic focusing array.

8. The ultrasound treatment system according to claim 1, wherein said single ultrasound transducer comprises an annular array.

9. An ultrasound treatment system according to claim 1, wherein said at least two ultrasound energy effects are configured to facilitate at least two responses in said region of interest.

10. An ultrasound system according to claim 1, wherein said ultrasound treatment system further comprises a coupling system configured for acoustic coupling between said single ultrasound transducer and the region of interest.

11. An ultrasound system according to claim 10, wherein said coupling system is configured for controlled cooling of an interface surface proximate to a region of interest to facilitate control of thermal energy effects of said ultrasound treatment system.

12. An ultrasound system according to claim 1, wherein said ultrasound treatment system is configured for providing at least one of therapy, imaging and tissue parameter monitoring.

13. An ultrasound system according to claim 10, wherein said ultrasound treatment system is configured for providing combined therapy and imaging treatment.

26. The ultrasound system according to claim 1, wherein said single ultrasound transducer further comprises a backing layer and a matching layer attached to said first portion.

27. The ultrasound system according to claim 1, wherein said single ultrasound transducer further comprises a first backing layer and a first matching layer attached to said first portion and a second backing layer and second matching layer attached to said second portion wherein said first backing layer and matching layer are structurally different from said second backing layer and second matching layer.

14. A method for providing non-invasive ultrasound treatment to a patient, said method comprising:

operating a transducer emitting ultrasound energy at a first frequency range to provide a first energy effect comprising an ablative or a hemostatic effect to produce a first response in a region of interest; and

operating said transducer emitting ultrasound energy at a second frequency range to provide a second energy effect comprising a non-thermal streaming effect that is distinct from and independent of said first energy effect and occurs after one or more delay periods after said first energy effect.

15. The method according to claim 14, wherein said ultrasound energy emitted at said second frequency range and amplitude is emitted by a control system applying more power to said transducer than occurs when said ultrasound energy at said first frequency range and amplitude is emitted.

16. The method according to claim 15, wherein said method further comprises combining said first response and said second response to produce an overall response in said region of interest.

17. The method according to claim 14, wherein said further comprises a cavitational, hydrodynamic, and a resonance induced tissue effect.

18. The method according to claim 14, wherein said second energy effect further comprises a cavitational, and hydrodynamic, tissue effect.

19. The method according to claim 14, wherein said step of operating a transducer emitting ultrasound energy at a first frequency range and amplitude to provide said first energy effect to produce a first response in a region of interest comprises operating a transducer emitting ultrasound energy to produce at least one of a hemostasis, subsequent revascularization/angiogenesis, coagulative necrosis, growth of interconnective tissue, tissue reformation, ablation of existing tissue, collagen reformation, enhanced delivery and activation of medicants, stimulation of protein synthesis and increased cell permeability response.

20. The method according to claim 14, wherein said step of operating a transducer emitting ultrasound energy at a second frequency range and amplitude to provide a second energy effect to produce a second response in a region of interest comprises operating a transducer emitting ultrasound energy to produce at least one of a second hemostasis, subsequent revascularization/angiogenesis, growth of interconnective tissue, tissue reformation, ablation of existing tissue, collagen reformation, enhanced delivery and activation of medicants, stimulation of protein synthesis and increased cell permeability response, and wherein said second response is the same as or different from said first response.

28. The method according to claim 14, wherein said ultrasound energy is emitted at said first frequency range and amplitude and also emitted at a harmonic frequency range.

21. A method for providing non-invasive ultrasound treatment to a patient, said method comprising:

providing one of a first planar, defocused, or focused ultrasound energy beam to a region of interest to produce a first energy effect comprising an ablative or hemostatic effect and a corresponding first response;

allowing a delay period to occur after producing said first energy effect; and

providing one of a second planar, defocused, or focused ultrasound energy beam to said region of interest to produce a second energy effect comprising a non-thermal streaming effect and a corresponding second response wherein said first planar, defocused, or focused ultrasound energy beam and said second planar, defocused, or focused ultrasound energy beam are capable of creating said first response and said second response.

22. The method according to claim 21, wherein said first energy effect further comprises providing one of a first planar, defocused, and focused ultrasound energy beam to a region of interest to produce one of a thermal, cavitational, hydrodynamic, and a resonance induced tissue effect.

23. The method according to claim 21, wherein said second energy effect further comprises providing one of a second planar, defocused, and focused ultrasound energy beam to a region of interest to produce one of a thermal, cavitational, hydrodynamic, and a resonance induced tissue effect, and wherein said second energy effect is the same as or different from said first energy effect.

24. The method according to claim 21, wherein said step of providing one of a first planar, defocused, and focused ultrasound energy beam to a region of interest to produce a first response comprises providing one of a first planar, defocused, and focused ultrasound energy beam to a region of interest to produce one of a hemostasis, subsequent revascularization/angiogenesis, growth of interconnective tissue, tissue reformation, ablation of existing tissue, collagen reformation, enhanced delivery and activation of medicants, stimulation of protein synthesis and increased cell permeability response.

25. The method according to claim 21, wherein said step of providing one of a second planar, defocused, and focused ultrasound energy beam to a region of interest to produce a second response comprises providing one of a first planar, defocused, and focused ultrasound energy beam to a region of interest to produce one of a hemostasis, subsequent revascularization/angiogenesis, growth of interconnective tissue, tissue reformation, ablation of existing tissue, collagen reformation, enhanced delivery and activation of medicants, stimulation of protein synthesis and increased cell permeability response, and wherein said second response is the same as or different from said first response.