Apparatus for the noninvasive treatment of tissue using microwave energy

• US 8,825,176 B2
• Filed: 02/20/2013
• Issued: 09/02/2014
• Est. Priority Date: 12/12/2007
• Status: Active Grant

• Current Assignee: miraDry, Inc. (Sientra Incorporated)
• Original Assignee: Miramar Labs, Inc. (Sientra Incorporated)
• Inventors: Johnson, Jessi Ernest, Deem, Mark E., Francis, Daniel, Kim, Steven, Salamini, Alexey, Su, Ted, Smith, Peter, Hallock, Daniel, Ben-Haim, Yoav, Saraf, Shailendhar
• Primary Examiner(s): Dvorak, Linda
• Assistant Examiner(s): ANTISKAY, BRIAN MICHAEL
• Application Number:
  US13/772,238
• Publication Number:
  US 20130166003A1
• Time in Patent Office: 559 Days
• Field of Search: 607/96, 607/100, 607/101, 607/154, 600/9, 600/10, 606/20, 606/27, 606/33, 219/678
• US Class Current: 607/101
• CPC Class Codes: A61N 5/022 Apparatus adapted for a specific treatment
• CPC Class Codes: A61N 5/04 Radiators for near-field treatment

Abstract

The present invention is directed to systems, apparatus, methods and procedures for the noninvasive treatment of tissue using microwave energy. In one embodiment of the invention a medical device and associated apparatus and procedures are used to treat dermatological conditions using microwave energy.

Claims

1. A disposable medical apparatus for use with an applicator which radiates microwave energy, said disposable medical apparatus comprising:

a tissue chamber at a distal end of said disposable medical apparatus, a distal end of said tissue chamber being adapted to form a vacuum seal when positioned against skin;

an applicator chamber at a proximal end of said disposable member;

a flexible film separating said tissue chamber and said applicator chamber, said flexible film being substantially impermeable to air and biological fluids;

a filter separating air in said tissue chamber from air in said applicator chamber, said filter being substantially permeable to air but substantially impermeable to biological fluids;

a vacuum circuit connecting said tissue chamber and said applicator chamber to apply vacuum to first and second sides of said flexible film; and

a vacuum seal disposed on said applicator chamber, said vacuum seal being positioned to engage the applicator and seal said applicator chamber when said applicator is positioned in said applicator chamber.

2. A disposable medical apparatus according to claim 1, wherein said flexible film does not perturb microwave fields passing through said tissue bio-barrier.

3. A disposable medical apparatus according to claim 2, wherein the microwave energy radiates at a frequency between approximately 5 GHz and 6.5 GHz.

4. A disposable medical apparatus according to claim 1, wherein said flexible film has a Young'"'"'s modulus of between approximately 0.1 GPa and 1.5 GPa.

5. A disposable medical apparatus according to claim 1, wherein said vacuum circuit provides a substantially free flow of air from said applicator chamber to said tissue chamber.

6. A disposable medical apparatus according to claim 1, wherein said flexible film is less than approximately 0.001 inches thick.

7. A disposable medical apparatus according to claim 1, wherein the flexible film comprises a dielectric material.

8. A disposable medical apparatus according to claim 1, wherein said vacuum circuit is adapted to split vacuum pressure between said tissue chamber and said applicator chamber.

9. A disposable medical apparatus according to claim 1, wherein said vacuum seal comprises a gasket around said applicator chamber.

10. A disposable medical apparatus according to claim 1 wherein said filter comprises a hydrophobic membrane filter.

11. A disposable medical apparatus according to claim 1 wherein said tissue chamber further comprises a compliant member positioned at a distal end thereof.

12. A disposable medical apparatus for use with an applicator which radiates microwave energy, said disposable medical apparatus comprising:

a tissue chamber at a distal end of said disposable medical apparatus, a distal end of said tissue chamber being adapted to form a vacuum seal when positioned against skin;

an applicator chamber at a proximal end of said disposable member;

a film separating said tissue chamber and said applicator chamber, said film being substantially impermeable to air and biological fluids;

a filter separating air in said tissue chamber from air in said applicator chamber, said filter being substantially permeable to air but substantially impermeable to biological fluids;

a vacuum circuit connecting said tissue chamber and said applicator chamber to apply vacuum to first and second sides of said film; and

a vacuum seal disposed on said applicator chamber, said vacuum seal being positioned to engage the applicator and seal said applicator chamber when said applicator is positioned in said applicator chamber.

13. A disposable medical apparatus according to claim 12, wherein the film does not perturb microwave fields passing through said tissue bio-barrier.

14. A disposable medical apparatus according to claim 13, wherein the microwave energy radiates at a frequency between approximately 5 GHz and 6.5 GHz.

15. A disposable medical apparatus according to claim 12, wherein the film has a Young'"'"'s modulus of between approximately 0.1 GPa and 1.5 GPa.

16. A disposable medical apparatus according to claim 12, wherein said vacuum circuit provides a substantially free flow of air from said applicator chamber to said tissue chamber.

17. A disposable medical apparatus according to claim 12, wherein the film is less than approximately 0.001 inches thick.

18. A disposable medical apparatus according to claim 12, wherein the film comprises a dielectric material.

19. A disposable medical apparatus according to claim 12, wherein said vacuum circuit is adapted to split vacuum pressure between said tissue chamber and said applicator chamber.

20. A disposable medical apparatus according to claim 12, wherein said vacuum seal comprises a gasket around said applicator chamber.

21. A disposable medical apparatus according to claim 12 wherein said filter comprises a hydrophobic membrane filter.

22. A disposable medical apparatus according to claim 12 wherein said tissue chamber further comprises a compliant member positioned at a distal end thereof.