Devices and Methods for Radiation-Based Dermatological Treatments

• US 20120283709A1
• Filed: 04/10/2012
• Published: 11/08/2012
• Est. Priority Date: 02/03/2011
• Status: Active Grant

• Current Assignee: Channel Investments, LLC
• Original Assignee: TRIA Beauty Incorporated (Channel Investments, LLC)
• Inventors: Reichert, Patrick, Youngquist, David, Weckwerth, Mark V., Liu, Harvey I-Heng
• Granted Patent: US 8,679,102 B2
• Time in Patent Office: Days
• US Class Current: 606/9
• CPC Class Codes: A61B 18/203 applying laser energy to the outside of the body
• CPC Class Codes: A61B 2017/00154 pulsed
• CPC Class Codes: A61B 2017/00769 Tattoo removal
• CPC Class Codes: A61B 2018/00452 Skin
• CPC Class Codes: A61B 2018/00458 Deeper parts of the skin, e.g. treatment of vascular disorders or port wine stains
• CPC Class Codes: A61B 2018/0047 Upper parts of the skin, e.g. skin peeling or treatment of wrinkles
• CPC Class Codes: A61B 2018/00476 Hair follicles
• CPC Class Codes: A61B 2018/00732 Frequency
• CPC Class Codes: A61B 2018/202 Laser enclosed in a hand-piece
• CPC Class Codes: A61B 2018/20351 Scanning mechanisms
• CPC Class Codes: A61B 2090/049 against light, e.g. laser
• CPC Class Codes: A61B 2090/061 for measuring dimensions, e.g. length
• CPC Class Codes: A61B 2090/065 for measuring contact or contact pressure
• CPC Class Codes: A61N 2005/0644 Handheld applicators
• CPC Class Codes: A61N 5/0616 Skin treatment other than tanning
• CPC Class Codes: A61N 5/067 using laser light

Abstract

A self-contained, hand-held device for providing a dermatological treatment includes a radiation source configured to generate one or more radiation beams, and an optical system configured to deliver the one or more radiation beams to the skin to provide a dermatological treatment. Each radiation beam includes a first axis beam profile and an orthogonal second axis beam profile. The optical system includes a first axis optic configured to influence the first axis beam profile of each radiation beam by a greater extent than the second axis beam profile of each radiation beam, and a second axis optic configured to influence the second axis beam profile of each radiation beam by a greater extent than the first axis beam profile of each radiation beam.

Claims

1. A self-contained, hand-held device for providing a dermatological treatment, the device comprising:

a radiation source configured to generate one or more radiation beams;

an optical system configured to deliver the one or more radiation beams to the skin to provide a dermatological treatment,

wherein each radiation beam includes a first axis beam profile and an orthogonal second axis beam profile; and

wherein the optical system includes;

a first axis optic configured to influence the first axis beam profile of each radiation beam by a greater extent than the second axis beam profile of each radiation beam; and

a second axis optic configured to influence the second axis beam profile of each radiation beam by a greater extent than the first axis beam profile of each radiation beam.

2. The device of claim 1, wherein the optical system includes exactly one first axis optic and exactly one second axis optic.

3. The device of claim 1, wherein the optical system includes a first axis optic positioned between two second axis optics along a path of the radiation.

4. The device of claim 1, wherein:

each radiation beam includes a fast axis beam profile and an orthogonal slow axis beam profile;

the optical system includes a fast axis optic and a slow axis optic;

the fast axis optic does not significantly influence the slow axis beam profile of each radiation beam.

5. The device of claim 4, wherein the slow axis optic does not significantly influence the fast axis beam profile of each radiation beam.

6. The device of claim 4, wherein the optical system includes exactly one slow axis optic.

7. The device of claim 1, wherein the first axis optic or the second axis optic comprises a rotating multi-sector scanning element.

8. The device of claim 7, wherein the rotating multi-sector scanning element comprises a generally stair-stepped structure.

9. The device of claim 7, wherein the rotating multi-sector scanning element comprises a generally cup-stepped optical element.

10. The device of claim 7, wherein the rotating multi-sector scanning element comprises a generally disk-stepped optical element.

11. The device of claim 7, wherein:

each radiation beam includes a fast axis beam profile and an orthogonal slow axis beam profile;

the rotating multi-sector scanning element influences the slow axis beam profile of each radiation beam more significantly than the fast axis beam profile.

12. The device of claim 11, wherein the rotating multi-sector scanning element does not significantly influence the fast axis beam profile of each radiation beam.

13. The device of claim 7, wherein the rotating multi-sector scanning element includes a plurality of scanning sectors arranged around a rotational axis of the scanning element, the plurality of scanning sectors configured to receive an input radiation beam and provide a sequentially scanned series of output beams, each output beam corresponding to one of the scanning sectors.

14. The device of claim 13, wherein at least one scanning sector is configured such that the output beam provided by that scanning sector maintains a substantially constant angle of deflection with respect to the input beam for the duration that the output beam is provided by that lenslet.

15. The device of claim 13, wherein:

each output beam provided by the scanning element includes a fast axis beam profile along a fast axis direction and an orthogonal slow axis beam profile along a slow axis direction;

the sequentially scanned series of output beams provided by the scanning element are offset from each other generally in the slow axis direction.

16. The device of claim 13, wherein the sequentially scanned series of output beams provided by the scanning element form a pattern of treatment spots that are spaced apart from each on the skin, to provide a fractional treatment.

17. A self-contained, hand-held device for providing a dermatological treatment, the device comprising:

a radiation source configured to generate one or more non-collimated beams; and

an optical system configured including one or more optical elements to deliver the one or more beams to the skin to provide a dermatological treatment;

wherein the an optical system does not collimate the one or more beams at any point from the radiation source to the skin.

18. The device of claim 17, wherein the radiation source comprises a laser diode that generates a beam having fast axis beam profile and an orthogonal slow axis beam profile.

19. The device of claim 18, wherein the beam is either diverging or converging in both the fast axis beam profile and the slow axis beam profile over the full path from radiation source to target.

20. The device of claim 17, wherein:

each beam includes a first axis beam profile and an orthogonal second axis beam profile; and

each optical element of the optical system is asymmetric, thereby influencing either the first axis beam profile or the second axis beam profile more significantly than the other beam profile.

21. The device of claim 17, wherein:

each beam includes a first axis beam profile and an orthogonal second axis beam profile; and

the optical system includes;

a first axis optic configured to influence the first axis beam profile of each beam by a greater extent than the second axis beam profile of each radiation beam; and

a second axis optic configured to influence the second axis beam profile of each beam by a greater extent than the first axis beam profile of each radiation beam.

22. The device of claim 21, wherein:

the first axis optic does not significantly influence the second axis beam profile of each beam; and

the second axis optic does not significantly influence the first axis beam profile of each beam.

23. The device of claim 17, wherein the optical system comprises a rotating multi-sector scanning element including a plurality of scanning sectors arranged around a rotational axis of the scanning element, the plurality of scanning sectors configured to receive an input beam and provide a sequentially scanned series of output beams, each output beam corresponding to one of the scanning sectors.

24. The device of claim 23, wherein:

each radiation beam includes a fast axis beam profile and an orthogonal slow axis beam profile;

the rotating multi-sector scanning element influences the slow axis beam profile of each radiation beam more significantly than the fast axis beam profile.

25. The device of claim 23, wherein at least one scanning sector is configured such that the output beam provided by that scanning sector maintains a substantially constant angle of deflection with respect to the input beam for the duration that the output beam is provided by that lenslet.

26. The device of claim 23, wherein the sequentially scanned series of output beams provided by the scanning element form a pattern of treatment spots that are spaced apart from each on the skin, to provide a fractional treatment.

27. The device of claim 23, wherein:

each beam includes a fast axis beam profile and an orthogonal slow axis beam profile; and

the rotating multi-sector scanning element receives an input beam that are converging in the fast axis beam profile and diverging in slow axis beam profile, and provides output beams that are converging in both the fast axis beam profile and the slow axis beam profile.

28. A self-contained, hand-held device for providing a dermatological treatment, the device comprising:

a radiation source configured to generate one or more beams, each beam having a first axis beam profile and an orthogonal second axis beam profile; and

an optical system configured including one or more optical elements to deliver the one or more beams to the skin to provide a dermatological treatment;

wherein each optical element of the optical system is asymmetric, thereby influencing either the first axis beam profile or the second axis beam profile more significantly than the other beam profile.

29. The device of claim 28, wherein the radiation source comprises a laser diode that generates a beam having fast axis beam profile and an orthogonal slow axis beam profile.

30. The device of claim 29, wherein the beam is either diverging or converging in both the fast axis beam profile and the slow axis beam profile over the full path from radiation source to target.

31. The device of claim 28, wherein:

each beam includes a first axis beam profile and an orthogonal second axis beam profile; and

the optical system includes;

a first axis optic configured to influence the first axis beam profile of each beam by a greater extent than the second axis beam profile of each radiation beam; and

a second axis optic configured to influence the second axis beam profile of each beam by a greater extent than the first axis beam profile of each radiation beam.

32. The device of claim 28, wherein the optical system comprises a rotating multi-sector scanning element including a plurality of scanning sectors arranged around a rotational axis of the scanning element, the plurality of scanning sectors configured to receive an input beam and provide a sequentially scanned series of output beams, each output beam corresponding to one of the scanning sectors.

33. The device of claim 32, wherein at least one scanning sector is configured such that the output beam provided by that scanning sector maintains a substantially constant angle of deflection with respect to the input beam for the duration that the output beam is provided by that lenslet.

34. The device of claim 32, wherein the sequentially scanned series of output beams provided by the scanning element form a pattern of treatment spots that are spaced apart from each on the skin, to provide a fractional treatment.