Apparatus and method for acoustic/mechanical treatment of early stage acne

• US 7,320,691 B2
• Filed: 01/15/2003
• Issued: 01/22/2008
• Est. Priority Date: 01/15/2003
• Status: Active Grant

• Current Assignee: L'Oreal SA
• Original Assignee: Pacific Bioscience Laboratories Incorporated (L'Oreal SA)
• Inventors: Meginniss, Stephen M., Pilcher, Kenneth A., Giuliani, David
• Primary Examiner(s): Hayes; Michael J.
• Assistant Examiner(s): NGUYEN, VI X
• Application Number:
  US10/345,909
• Publication Number:
  US 20050277950A1
• Time in Patent Office: 1,833 Days
• Field of Search: 606/131, 604/289, 604/290, 604/313, 15/28, 310/36
• US Class Current: 606/131
• CPC Class Codes: A61B 17/54 Chiropodists' instruments , e.g. pedicure chiropractic devices A61H1/008
• CPC Class Codes: A61B 2017/00747 Dermatology
• CPC Class Codes: A61B 2017/320012 Brushes

Abstract

The apparatus includes at least two skin-contacting elements, the elements having narrow end faces and a mounting assembly for holding the elements closely adjacent to each other. A driving assembly reciprocally moves one element relative to the adjacent element(s) at a frequency that produces an action on the pores of the skin to loosen sebaceous plugs present in the pores, by permitting their ready removal from the skin.

Claims

1. An apparatus for treatment of acne, comprising:

at least two contacting elements having end faces, all of the end faces being in substantially the same plane, wherein at least one contacting element is a moving contacting element, the end faces of the moving contacting element moving in a single plane;

a mounting assembly for holding the contacting elements substantially adjacent to each other; and

an assembly for positively moving said at least one moving contacting element bi-directionally about a neutral position relative to at least one adjacent contacting element, to produce alternating tension and compression of the skin, wherein when the apparatus is positioned so that the end faces of the contacting elements contact the skin, an action on the skin in the plane of a skin area to be treated for acne is produced to remove sebum plugs from skin pores, permitting ready removal thereof from the skin.

2. An apparatus of claim 1, wherein the frequency of movement of the moving contacting element is within a range of 20 Hz to 1 KHz.

3. An apparatus of claim 2, wherein the frequency is preferably within the range of 80-200 Hz.

4. An apparatus of claim 1, wherein the movement of the contacting element places the skin in alternating shear, which assists in loosening the sebaceous plugs from the skin pores in which they are located.

5. An apparatus of claim 4, wherein the movement of moving contact element is reciprocally arcuate in nature.

6. An apparatus of claim 1, wherein the contacting elements comprise, respectively, rows of bristle tufts.

7. An apparatus of claim 6, wherein the bristles have a diameter in the range of 2 to 5 mils and a length in the range of 0.250 to 0.600 inches, and wherein the bristle material has a flexural modulus in the range of 100 to 1000 kpsi.

8. An apparatus of claim 6 wherein the tufts have mechanical characteristics such that a displacement of 0.062 inches at the base of a tuft causes a force in the range of 0.3 grams to 1.4 grams, to be exerted on the skin at the end of said tuft.

9. An apparatus of claim 8 wherein the force is approximately 0.061 grams.

10. An apparatus of claim 6 wherein the peak amplitude of motion at the base of one bristle tuft with respect to that of an adjacent contacting element is in the range of 10%-125% of the center-to-center distance between adjacent contacting elements moving with respect to each other.

11. An apparatus of claim 10 wherein said peak amplitude of motion at the base of one bristle tuft with respect to that of an adjacent element is approximately 45%.

12. An apparatus of claim 6 wherein the rows of bristle tufts comprise a plurality of circular rows, alternating ones of which (a) move and (b) remain fixed in position.

13. An apparatus of claim 12 including a further row of fixed bristle tufts surrounding the plurality of circular rows.

14. An apparatus of claim 6 wherein the rows of bristle tufts comprise a plurality of circular rows, of which at least one circular row moves and at least one circular row is fixed in position.

15. An apparatus of claim 6 wherein the rows of bristle tufts comprise a plurality of circular rows, of which more than one circular row move and of which more than one circular row remain fixed in position.

16. An apparatus of claim 1, wherein the movement of the moving contacting element reciprocally places the skin in alternating tension and compression.

17. An apparatus of claim 1, wherein the motion of the moving contacting elements is controlled by a control means whereby the amplitude of motion of the moving contacting elements is substantially reduced when the contacting elements are not in contact with the skin and whereby the amplitude of motion of the moveable contacting elements is at the preferred magnitude when the contacting elements are applied to the skin with correct pressure for optimal operation and whereby the amplitude of motion of the moveable contacting elements is modified in a manner detectable by the user when the contacting elements are applied to the skin with greater than the correct pressure.

18. An apparatus of claim 1, including a fluid supplying structure positioned adjacent to the contacting elements and wherein said structure supplies a fluid which contacts the skin during operation.

19. An apparatus of claim 1, including a fluid-containing structure positioned adjacent the contacting elements and wherein said fluid-containing structure substantially prevents fluid from being expelled from the apparatus by movement of the contacting elements.

20. An apparatus of claim 19 wherein said fluid-containing structure consists of bristle tufts having a free end in approximately the same plane as that of the contacting elements.

21. An apparatus of claim 1, including a control assembly for controlling pressure applied to the skin so as to minimize the likelihood that excess skin pressure is exerted on the moving contacting elements.

22. An apparatus of claim 1, wherein said contacting elements are removable and replaceable.

23. An apparatus of claim 1, having a timing means, responsive to the device being turned on, for producing successive indications of intervals of elapsed time, wherein the intervals of elapsed time are related to desired times for treating portions of the face, wherein the successive indications of time are provided within a pre-established set period of time during which the apparatus is operating, and means for maintaining the status of the timing means for a selected period of time after the apparatus has been turned off during said pre-established period of time after the apparatus has been turned on.

24. An apparatus of claim 23 wherein the successive indications of time are provided within a pre-established set period of time during which the apparatus is operating.

25. An apparatus of claim 24 wherein the set period of time is approximately one minute and wherein the selected intervals of time are approximately 10 to 20 seconds.

26. An apparatus of claim 23 wherein the indications are a selected one of a) an audible signal and b) a detectable change in moving contacting element movement.

27. An apparatus of claim 23 wherein the indications comprise both an audible signal and a detectable change in moving contacting element movement.

28. An apparatus of claim 23 including means for changing the state of the timing means between enabled and disabled after the apparatus is turned on.

29. An apparatus of claim 28 wherein the changing means is responsive to an on/off switch being pressed on for a selected period of time.

30. An apparatus of claim 29 wherein a first audible signal indicates that the timing means has been enabled and a second audible signal different from the first audible signal indicates that the timing means has been disabled.

31. An apparatus for treatment of acne, comprising:

at least one moving contacting element having an end face for contacting the skin of a user; and

an assembly for positively moving said contacting element bi-directionally about a neutral position to produce alternating tension and compression of the skin, such that when the apparatus is positioned so that the contacting element end face contacts the skin, an action on the skin in the plane of the skin area to be treated for acne is produced to remove sebum plugs from the skin pores, permitting ready removal thereof from the skin.

32. An apparatus of claim 31 wherein the frequency of movement of the contacting element is within a range of 80-200 Hz.

33. An apparatus of claim 31 wherein movement of the contacting element places the skin in alternating shear, which assists in loosening the sebaceous plugs from the skin pores in which they are located.

34. An apparatus of claim 31 wherein the contacting element has a peak-to-peak amplitude of within the range of 0.04 to 0.150 inches.

35. An apparatus of claim 31 wherein the contact element comprises a single row of bristle tufts.

36. An apparatus of claim 35 wherein the peak-to-peak amplitude of the motion of the bristle tufts is within the range of 0.020 to 0.160 inches.

37. An apparatus of claim 35 wherein the single row of bristle tufts is a circle.

38. An apparatus of claim 31 wherein the bristles have a diameter in the range of 2 to 5 mils, with a preferred diameter of 3 mils and a length in the range of 0.250 to 0.600 inches, with a preferred length of 0.430 inches, and wherein the bristle material has a flexural modulus in the range of 100 to 1000 kpsi, preferably 600 kpsi.

39. An apparatus of claim 31 wherein the movement of the contacting element reciprocally places the skin in alternating tension and compression.

40. An apparatus of claim 31 wherein the contact element comprises a plurality of rows of bristle tufts.

41. An apparatus of claim 40 wherein the plurality of rows of bristle tufts are circular.

42. An apparatus for treatment/cleansing of skin, comprising:

at least two contacting elements having end faces, all of the end faces being in substantially the same plane, wherein at least one contacting element is a moving contacting element, the end faces of the moving contacting element moving in a single plane;

a mounting assembly for holding the contacting elements substantially adjacent to each other; and

an assembly for positively moving said at least one moving contacting element bi-directionally about a neutral position relative to at least one adjacent contacting element, to produce alternating tension and compression of the skin, wherein when the apparatus is positioned so that the end faces of the contacting elements contact the skin, an action on the skin in the plane of the skin area to be treated for acne produces a cleansing action on the skin, including removal of foreign material from skin pores.

43. An apparatus of claim 42 wherein the frequency of movement of the moving contacting element is within a range of 80-200 Hz.

44. An apparatus of claim 42 wherein relative movement of the contacting elements places the skin in alternating shear strain.

45. An apparatus of claim 42 wherein contacting elements comprise, respectively, rows of bristle tufts.

46. An apparatus of claim 42 wherein the movement of the moving contacting element reciprocally places the skin in alternating tension and compression.

47. An apparatus of claim 42 wherein the motion of the moving contacting elements is controlled by a control means whereby the amplitude of motion of the moving contacting elements is substantially reduced when the contacting elements are not in contact with the skin and whereby the amplitude of motion of the moveable contacting elements is at the preferred magnitude when the contacting elements are applied to the skin with correct pressure for optimal operation and whereby the amplitude of motion of the moveable contacting elements is modified in a manner detectable by the user when the contacting element are applied to the skin with greater than the correct pressure.

48. An apparatus of claim 42 including a fluid supplying structure positioned adjacent to the contacting elements and wherein said structure supplies a fluid which contacts the skin during operation.

49. An apparatus of claim 42 wherein said contacting elements are removable and replaceable.

50. An apparatus of claim 42 having a timing means, responsive to the device being turned on, for producing successive indications of intervals of elapsed time, wherein the intervals of elapsed time are related to desired times for treating portions of the face, wherein the successive indications of time are provided within a pre-established set period of time during which the apparatus is operating;

and means for maintaining the status of the timing means for a selected period of time after the apparatus has been turned off during said pre-established period of time after the apparatus has been turned on.

51. An apparatus of claim 42 wherein the rows of bristle tufts comprise a plurality of circular rows, which at least one circular row moves and at least one circular row is fixed in position.

52. An apparatus of claim 42 wherein the rows of bristle tufts comprise a plurality of circular rows, of which more than one circular row move and of which more than one circular row remain fixed in position.