Dermatological treatment with visualization

• US 7,220,254 B2
• Filed: 12/31/2004
• Issued: 05/22/2007
• Est. Priority Date: 12/31/2003
• Status: Expired due to Fees

• Current Assignee: Palomar Medical Technologies Incorporated (Hologic Incorporated)
• Original Assignee: Palomar Medical Technologies Incorporated (Hologic Incorporated)
• Inventors: Altshuler, Gregory B., O'Shea, Liam, Laznicka, Oldrich M. Jr.
• Primary Examiner(s): Johnson, III; Henry M.
• Application Number:
  US11/028,481
• Publication Number:
  US 20050154382A1
• Time in Patent Office: 872 Days
• Field of Search: 128/898, 606/9, 607 88- 94
• US Class Current: 606/9
• CPC Class Codes: A61B 18/20 using laser
• CPC Class Codes: A61B 18/203 applying laser energy to the outside of the body
• CPC Class Codes: A61B 2018/00452 Skin
• CPC Class Codes: A61B 90/30 Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
• CPC Class Codes: A61B 90/36 Image-producing devices or illumination devices not otherwise provided for
• CPC Class Codes: A61B 90/361 Image-producing devices, e.g. surgical cameras
• CPC Class Codes: A61B 90/37 Surgical systems with images on a monitor during operation
• CPC Class Codes: A61N 5/0616 Skin treatment other than tanning
• CPC Class Codes: G01N 21/4795 spatially resolved investigating of object in scattering medium in vivo A61B

Abstract

The present invention provides a handheld dermatological device for visualizing a skin treatment region prior to, during, or after therapeutic treatment with therapeutic energy. An apparatus according to the teachings of the invention can include an image capture device and a display device mounted to the apparatus and electrically coupled to the image capture device. The display device is capable of displaying images of the treatment area captured by the image capture device. The apparatus can further include a head capable of transmitting therapeutic energy to a treatment area, which can be precisely aligned by the user to a desired portion of the treatment area through the use of the display device. In some embodiments, the apparatus can include one or more illumination sources for illuminating a skin target region, and shield for shielding the image capture device from direct reflection of the illuminating radiation from a selected skin surface portion.

Claims

1. A handheld dermatological device, comprising

a housing capable of being manually manipulated to position a head portion thereof in proximity of a person'"'"'s skin surface,

an illuminating source mounted to said housing for illuminating a target skin region,

a solid state laser disposed in said housing for generating radiation,

an optical system coupled to said laser for directing radiation from the laser to the target skin region,

an image capture device mounted in said housing for generating an image of said illuminated target skin region,

a display coupled to said housing and in communication with said image capture device to display said image, and

a shield mounted to the head portion for shielding a portion of the skin surface through which said image capture device obtains the image of the target skin region from direct illumination by said illuminating source.

2. The device of claim 1, wherein said solid state laser comprises a rare earth doped laser.

3. The device of claim 2, wherein said solid state laser comprises a neodymium (Nd) laser.

4. The device of claim 2, wherein said solid state laser comprises a Nd:

YAG laser.

5. The device of claim 1, further comprising a microprocessor in communication with said image capture device for processing one or more images obtained by said image capture device.

6. The device of claim 1, wherein said image capture device comprises a CCD camera.

7. The device of claim 1, wherein said image capture device captures at least a portion of radiation returned from the skin through said skin surface portion in response to illuminating said illuminating source.

8. A method of treating skin, comprising:

applying treatment radiation generated by a solid state laser to selected vasculature located in a target skin region,

illuminating indirectly said target skin region by radiation from at least one illumination source so as to avoid direct incidence of the radiation on at least a portion of the surface of said target skin region,

generating an image of said target skin region, and

displaying said image.

9. The method of claim 8, further comprising selecting said solid state laser to be a rare earth doped laser.

10. The method of claim 8, further comprising selecting said solid state laser to be a neodymium (Nd) laser.

11. The method of claim 8, further comprising displaying said image concurrently with application of the treatment radiation.

12. The method of claim 8, further comprising utilizing said image to align a treatment radiation beam generated by said laser with said selected vasculature.

13. A handheld dermatological device, comprising

a housing through which treatment energy can be applied to a person'"'"'s skin,

two illumination sources capable of generating radiation having at least two different wavelengths, said sources being mounted to a head portion of said housing for illuminating a target skin region,

a control for selectively activating said sources,

an image capture device disposed in said housing for detecting at least a portion of radiation scattered by said target skin region in response to illumination by at least one of said sources, and

a shield positioned in proximity of at least one of said illumination sources for shielding a selected skin surface segment from direct illumination by said source.

14. The device of claim 13, wherein said control is adapted for activating said sources in different temporal intervals.

15. The device of claim 13, wherein said control is adapted for triggering said image capture device to form an image of the target region upon activation of at least one of said sources.

16. The device of claim 13, wherein said image capture device is adapted to collect radiation via said shielded skin surface segment radiation scattered by said target skin region.

17. The device of claim 13, further comprising a treatment source disposed in said housing for applying treatment energy to said target skin region through said shielded skin surface segment.

18. The device of claim 13, wherein said control is adapted to activate said illumination sources in accordance to a preset temporal pattern.