Methods and products for producing lattices of EMR-treated islets in tissues, and uses therefor

• US 20060004306A1
• Filed: 04/01/2005
• Published: 01/05/2006
• Est. Priority Date: 04/09/2004
• Status: Abandoned Application

• Current Assignee: Palomar Medical Technologies Incorporated (Hologic Incorporated)
• Original Assignee: Palomar Medical Technologies Incorporated (Hologic Incorporated)
• Inventors: Altshuler, Gregory B., Yaroslavsky, Ilya, Childs, James J., Erofeev, Andrei V., Smirnov, Mikhail Z.
• Application Number:
  US11/098,015
• Publication Number:
  US 20060004306A1
• Time in Patent Office: Days
• US Class Current: 601/3
• CPC Class Codes: A61B 18/203 applying laser energy to the outside of the body
• CPC Class Codes: A61B 2017/00765 Decreasing the barrier function of skin tissue by radiated energy, e.g. using ultrasound, using laser for skin perforation
• CPC Class Codes: A61B 2018/00005 Cooling or heating of the probe or tissue immediately surrounding the probe
• CPC Class Codes: A61B 2018/00452 Skin
• 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 2018/2023 Self-contained devices, i.e. with power supply in the hand-piece
• CPC Class Codes: A61B 2018/20355 Special scanning path or conditions, e.g. spiral, raster or providing spot overlap
• CPC Class Codes: A61H 2201/10 with further special therapeutic means, e.g. electrotherapy, magneto therapy or radiation therapy, chromo therapy, infrared or ultraviolet therapy
• CPC Class Codes: A61H 39/002 Using electric currents electrotherapy A61N1/32
• CPC Class Codes: A61N 1/00 Electrotherapy; Circuits therefor A61N2/00 takes precedence; irradiation apparatus A61N5/00
• CPC Class Codes: A61N 2/00 Magnetotherapy

Abstract

Methods of treatment of tissue with electromagnetic radiation (EMR) to produce lattices of EMR-treated islets in the tissue are disclosed. Also disclosed are devices and systems for producing lattices of EMR-treated islets in tissue, and cosmetic and medical applications of such devices and systems.

Claims

1-285. -285. (canceled)

286. An apparatus for performing a treatment on tissue, comprising:

a housing having an output end for EMR from an EMR source; and

a mask coupled to the housing, the mask comprising a dielectric coating of one or more dielectric layers and including a plurality of openings for passage of at least a portion of the EMR from the EMR source to create treatment islets in the tissue.

287. The apparatus of claim 286, wherein the mask is positioned near the output end of the housing.

288. The apparatus of claim 286, wherein the EMR source is coupled to the housing.

289. The apparatus of claim 286, wherein the EMR source is coupled to a base unit that is separate from the housing.

290. The apparatus of claim 286, wherein the apparatus includes one or both of a cooling element or a heating element for cooling or heating the mask during use.

291. The apparatus of claim 290, wherein the mask is separate from the element.

292. The apparatus of claim 290, wherein the mask is integrated with the element.

293. The apparatus of claim 290, wherein the element cools the tissue when in use.

294. The apparatus of claim 293, wherein the element cools the EMR source.

295. The apparatus of claim 290, wherein the element cools components of the apparatus.

296. The apparatus of claim 286, wherein the mask is formed on a sapphire cooling plate.

297. The apparatus of claim 296, wherein the sapphire cooling plate is cooled by a water manifold.

298. The apparatus of claim 286, wherein the dielectric layers have a high reflectance over a spectral band emitted by the EMR source.

299. The apparatus of claim 286, wherein the EMR source is selected from a group consisting of a LED, a laser, a diode laser bar, a radiant lamp, a halogen lamp, an incandescent lamp, an arc lamp, and a fluorescent lamp.

300. The apparatus of claim 286, wherein the EMR source is a coherent source.

301. The apparatus of claim 286, wherein the EMR source is an incoherent source.

302. The apparatus of claim 286, wherein the openings have various shapes.

303. The apparatus of claim 286, wherein the shapes of the openings are one or more of lines, circles, slits, rectangles, ovals, or irregular shapes.

304. The apparatus of claim 286, wherein the openings have identical shapes.

305. The apparatus of claim 286, wherein the openings are periodic.

306. The apparatus of claim 286, wherein the openings are not periodic.

307. The apparatus of claim 286, wherein the openings are approximately circular and have a diameter D such that D2/4λ

L<

1, where λ

is an operational wavelength of the EMR and L is a laser cavity length of the EMR source.

308. The apparatus of claim 286, wherein the treatment islets in the tissue have a fill factor of 0.01-90%.

309. The apparatus of claim 308, wherein the treatment islets in the tissue have a fill factor of 10-30%.

310. The apparatus of claim 308, wherein the treatment islets in the tissue have a fill factor of 30-50%.

311. The apparatus of claim 286, further comprising a Fresnel or a refractive lens for angular beam shaping.

312. The apparatus of claim 286, further comprising a waveguide for homogenization of a light beam from the EMR source.

313. The apparatus of claim 312, wherein the waveguide is coupled to the housing, and wherein the mask is coated on the waveguide.

314. The apparatus of claim 312, wherein the EMR is in the infrared band.

315. The apparatus of claim 314, wherein the EMR is in the near infrared band.

316. The apparatus of claim 314, wherein EMR is applied with a pulse width of 100 fsec to 1 sec.

317. The apparatus of claim 286, wherein the apparatus does not have beam shaping optics between the mask and the tissue when in use.

318. The apparatus of claim 286, wherein the plurality of openings are at least partially transparent portions of the mask.

319. The apparatus of claim 286, wherein the dielectric coating does not absorb a substantial amount of the EMR.

320. The apparatus of claim 286, wherein the dielectric coating is fabricated by vacuum deposition of the one or more dielectric layers.

321. The apparatus of claim 286, wherein one or more of the plurality of openings are coated with anti-reflective coatings.

322. The apparatus of claim 286, wherein one or more of the plurality of openings contain one or both of Fresnel or refractive lenses.

323. The apparatus of claim 286, further comprising a temperature monitoring mechanism for monitoring the temperature of one or both of the tissue and the mask.

324. The apparatus of claim 323, wherein the temperature monitoring mechanism includes an optical source to shine a probe beam at the mask.

325. The apparatus of claim 324, wherein the temperature monitoring mechanism includes a detector to detect the probe beam after reflection from the mask.

326. The apparatus of claim 325, wherein at least one of the dielectric layers changes a refractive index as a result of temperature change.

327. The apparatus of claim 326, wherein the temperature monitoring mechanism is built into the housing.

328. The apparatus of claim 286, wherein the mask is coated with a phase-changing material that changes in transmittance as a result of temperature change.

329. The apparatus of claim 328, wherein the transmittance of the openings decreases when the temperature increases.

330. The apparatus of claim 286, further comprising a contact sensor to sense when the housing is in contact with the tissue.

331. The apparatus of claim 286, further comprising at least one of a capacitive and optical imaging array to create images of the tissue.

332. The apparatus of claim 286, wherein the apparatus is a hand held device.

333. An apparatus for performing a treatment on tissue, comprising:

a housing having a portion that defines a target treatment area on the tissue when placed in proximity to the tissue, wherein the housing has an output end for EMR from an EMR source; and

a mask coupled to the housing, the mask positioned optically between the EMR source and the target treatment area, the mask comprising one or more dielectric layers, the one or more dielectric layers being at least partially reflective to EMR from the EMR source, and the mask including a plurality of openings therethrough for passage of at least a portion of the EMR from the EMR source.

334. The apparatus of claim 333, wherein the EMR source is coupled to the housing.

335. The apparatus of claim 333, wherein the EMR source is coupled to a base unit that is separate from the housing.

336. The apparatus of claim 333, further comprising a temperature monitoring mechanism for monitoring the temperature of the mask, the temperature monitoring mechanism including an optical source to shine a probe beam at the mask and a detector to detect the probe beam after reflection at the mask.

337. The apparatus of claim 336, wherein at least one of the dielectric layers changes a refractive index as a result of temperature change.

338. The apparatus of claim 337, wherein the temperature monitoring mechanism is built into the housing.

339. A hand held device, comprising:

a housing capable of being manipulated to position the housing in proximity to tissue;

an EMR source supported by the housing; and

a mask coupled to the housing, the mask positioned optically between the EMR source and an output from the housing, the mask comprising one or more dielectric layers, the one or more dielectric layers being at least partially reflective to EMR from the EMR source, and the mask including a plurality of openings therethrough for passage of at least a portion of the EMR from the EMR source.

340. An apparatus for performing a treatment on tissue, comprising:

a hand held piece having a portion that defines a target treatment area on the tissue when placed in proximity to the tissue;

a base unit containing an EMR source for supplying EMR to the hand held piece; and

a mask coupled to the hand held piece, the mask positioned optically between the EMR source and the target treatment area, the mask comprising one or more dielectric layers, the one or more dielectric layers being at least partially reflective to EMR from the EMR source, and the mask including a plurality of openings therethrough for passage of at least a portion of the EMR from the EMR source.

341. A dermatological device, comprising:

a housing capable of being manipulated to position a head portion of the housing in proximity to tissue, the head portion defining a target treatment area on the tissue;

a light path between an EMR source and the head portion; and

an output window from the housing having a multi-layer dielectric coating with a plurality of at least partially transparent openings, wherein the openings in the multi-layer dielectric coating allow for passage of at least a portion of the EMR from the EMR source to the target treatment area to create a matrix of treatment islets in the tissue.

342. The dermatological device of claim 341, wherein the output window is a cooling surface.

343. The dermatological device of claim 342, wherein the output window is made from sapphire.

344. A dermatological apparatus for performing a treatment on tissue, comprising:

means for masking EMR from an EMR source to produce treatment islets in the tissue, wherein the masking means comprises one or more dielectric layers having a plurality of openings therethrough for passage of at least a portion of the EMR from the EMR source; and

means for supporting the masking means, the supporting means including a head portion capable of being manipulated to position the head portion in proximity to the tissue when in use.

345. An apparatus for performing a treatment on tissue, comprising:

a housing having an output end for EMR from an EMR source; and

a mask coupled to the housing, the mask comprising more than one reflective layer and including a plurality of openings for passage of at least a portion of the EMR from the EMR source to create treatment islets in the tissue.

346. The apparatus of claim 345, wherein the reflective layers are dielectric layers.