Apparatus for controlled contraction of collagen tissue

• US 5,871,524 A
• Filed: 02/03/1997
• Issued: 02/16/1999
• Est. Priority Date: 05/05/1995
• Status: Expired due to Term

• Current Assignee: Thermage Incorporated (Bausch Health Cos., Inc.)
• Original Assignee: Thermage Incorporated (Bausch Health Cos., Inc.)
• Inventors: Knowlton, Edward W.
• Primary Examiner(s): Peffley, Michael
• Assistant Examiner(s): YARNELL, BRYAN KEITH
• Application Number:
  US08/794,003
• Time in Patent Office: 743 Days
• Field of Search: 607/96, 607/100, 607/101, 607/97-99, 607/102-104, 128/897, 128/898, 606/2, 606/9, 606/33, 606/41, 600/373
• US Class Current: 607/101
• CPC Class Codes: A61B 18/12 by passing a current through the tissue to be heated, e.g. high-frequency current
• CPC Class Codes: A61B 18/1206 Generators therefor
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 2018/00488 Esophagus
• CPC Class Codes: A61B 2018/0066 without feedback, i.e. open loop control
• CPC Class Codes: A61M 15/0028 using prepacked dosages, one for each application, e.g. capsules to be perforated or broken-up
• CPC Class Codes: A61M 15/0036 hollow piercing means
• CPC Class Codes: A61M 15/0041 with movable piercing or cutting means
• CPC Class Codes: A61M 2202/064 Powder
• CPC Class Codes: A61M 2205/073 Syringe, piston type
• CPC Class Codes: A61N 5/04 Radiators for near-field treatment

Abstract

An apparatus applies radiant energy through the skin to an underlying subcutaneous layer or deeper soft tissue layers that includes loculations of fat with fibrous septae made of collagen tissue. This creates a desired contour effect without substantially modifying melanocytes and other epithelial cells in the epidermis. A membrane conforms a contacting exterior surface of the membrane to a skin layer. One or more thermal electrodes positioned in the membrane. A focussing element focuses thermal energy to the underlying collagen tissue. The focusing element and the electrolytic solution create a reverse thermal gradient from the skin to the collagen tissue. A thermal power source is coupled to the thermal electrodes.

Claims

1. An apparatus for applying energy through a skin epidermis surface to an underlying subcutaneous layer or deeper soft tissue layers that includes loculations of fat with fibrous septae made of collagen containing tissue, to create a desired contour effect without substantially modifying melanocytes in an epidermis, comprising;

a membrane that conforms a contacting exterior surface of the membrane to the skin epidermis surface,

one or more electrodes positioned in the membrane configured to be coupled to an energy source;

an electrolytic media positioned in the membrane and coupled to the electrodes to receive energy from the electrodes and transfers energy from the electrodes to the skin epidermis surface; and

a focussing element that creates a reverse thermal gradient from the skin epidermis surface to the collagen containing tissue.

2. The apparatus of claim 1, wherein the focussing element is positioned in the membrane.

3. The apparatus of claim 1, wherein the focussing element is positioned at an exterior of the membrane between the skin layer and the membrane.

4. The apparatus of claim 3, further comprising:

a coupling device that couples the focussing element to the membrane.

5. The apparatus of claim 3, further comprising:

a bracket positioned around a periphery of the membrane, and supporting the focussing element.

6. The apparatus of claim 1, further comprising:

a fluid passage lumen positioned in the membrane to cool a surface of the skin, the membrane receiving electrolytic solution which transfers energy from the electrodes to the skin and a subcutaneous layer; and

a source of electrolytic solution coupled to the fluid passage lumen.

7. The apparatus of claim 1, wherein energy is applied through a papillary dermis layer.

8. The apparatus of claim 1, wherein energy is applied through a reticular dermis layer.

9. The apparatus of claim 1, wherein energy is applied through a subcutaneous layer and deeper soft tissues.

10. The apparatus of claim 1, wherein the electrodes arc RF electrodes, the energy source is an RF power source, and the electrolytic media transfers RF energy from the RF electrode to the underlying collagen containing tissue.

11. The apparatus of claim 10, further comprising

a feedback device responsive to a detected characteristic of the skin or subcutaneous layer that provides a controlled delivery of RF energy to one or more plurality of RF electrodes.

12. The apparatus of claim 11, wherein the detected characteristic is an impedance measurement of the skin.

13. The apparatus of claim 11, wherein the detected characteristic is a temperature profile of the skin.

14. The apparatus of claim 11, wherein the feedback device includes a controller.

15. The apparatus of claim 11, wherein the feedback device includes a multiplexer.

16. The apparatus of claim 1, further comprising:

a cooling fluid source coupled to a cooling lumen.

17. The apparatus of claim 16, wherein the cooling fluid source houses water.

18. The apparatus of claim 1, wherein the membrane is a microporous membrane.

19. The apparatus of claim 1, wherein the membrane conforms closely to the surface of the skin.

20. The apparatus of claim 1, wherein the apparatus includes a plurality of RF electrodes.

21. The apparatus of claim 1, further comprising:

one or more thermal sensors positioned on the contacting exterior surface of the membrane.

22. The apparatus of claim 1, further comprising:

one or more impedance monitors positioned on the contacting exterior surface of the membrane.

23. The apparatus of claim 1, wherein the focussing element maintains a temperature of the skin epidermis surface at a lower temperature than a temperature of the underlying collagen containing tissue.

24. The apparatus of claim 23, wherein the focussing element includes a cooling medium delivery device coupled to the membrane.

25. An apparatus for liposculpturing an area of a body including a skin surface with multiple layers, and an underlying are made of a loculation of fat that has collagen containing tissue as a fibrous septae, comprising:

an energy delivery device means;

electrolytic media energy delivery means coupled to the energy delivery device means to receive electrolytic energy and transfer the electrolytic energy from the energy delivery device means to the skin surface,

the electrolytic media means delivering energy to the skin surface and the energy passing through the skin surface to the underlying collagen containing tissue to contract at least a portion of the collagen containing tissue while minimizing cellular destruction and creating a tightening the skin surface; and

a membrane housing means housing at least a portion of the energy delivery device means, the membrane means including a membrane skin surface interface means.

26. The apparatus of claim 25, wherein the energy delivery device means includes a thermal energy delivery means positioned in the membrane means and delivering thermal energy to the electrolytic media means.

27. The apparatus of claim 26, further comprising:

a focussing element temperature maintenance means that maintains a temperature of the skin surface at a lower temperature than a temperature of the underlying collagen containing tissue.

28. The apparatus of claim 27, wherein the focusing element temperature maintenance means is positioned in the membrane means.

29. The apparatus of claim 27, wherein the focussing element temperature maintenance means is positioned at an exterior of the membrane means between the skin surface and the membrane skin interface surface means.

30. The apparatus of claim 25, further comprising:

an electrolytic source electrolytic media delivery means coupled to the membrane means to deliver the electrolytic media means to the membrane means.

31. The apparatus of claim 25, wherein the energy delivery device means is an RF delivery means.

32. The apparatus of claim 25, further comprising:

an impedance monitor means coupled to the energy delivery device means.

33. The apparatus of claim 25, further comprising:

a thermal sensor means coupled to the energy delivery device means.

34. The apparatus of claim 25, further comprising:

a feedback device energy means coupled to a thermal sensor means and the energy delivery device means and responsive to a detected characteristic of the collage containing tissue to deliver controlled energy to the energy delivery device means.

35. The apparatus of claim 34, wherein the feedback device means includes a controller means.

36. The apparatus of claim 35, wherein the feedback device means includes a multiplexer means.

37. The apparatus of claim 25, wherein the energy delivery means is a microwave means.

38. The apparatus of claim 25, wherein the energy delivery means is an ultrasound means.