Abstract: A method of reducing the level of pain experienced by a patient during a pain-inducing dermatological treatment by using non-pharmacologic means is described. The method employs the use of multiple bursts of a gas to stimulate a touch sensation in or near the tissue to be treated using the dermatological treatment in order to reduce and/or relieve pain. The method can be used alone or can be used in combination with other non-pharmacologic and/or pharmacologic methods of relieving pain in order to make a patient more comfortable during or following the dermatological treatment.

Abstract: Handpieces which comprise characteristic data storage systems electronically storing characteristic data, devices comprising these handpieces, methods of characterizing the device components, and methods of adjusting the device components based on stored characteristic data are described. The handpieces can be repeatedly connected to, disconnected from, and reconnected to an optical energy system comprising at least one optical energy source and at least one controller by a treatment provider. When the handpieces are connected to an optical energy source and a controller, the component characteristic data is accessed and used to adjust one or more of the components in order for the components to function together within a pre-determined tolerance. Once the components are connected and adjusted, the device can be used to provide an optical energy based medical and/or cosmetic treatment to a tissue such as, for example, human skin.

Abstract: The present invention relates to a method and apparatus for using an imaging detector to image an optical pattern created by illumination of a viscous material that is applied to the skin. The viscous material forms a detectable pattern that can be imaged by the imaging detector. In some examples, the viscous material is reflective and allows reflection from an illumination source to create an optical pattern on the imaging detector. In other cases, the variation in thickness of an absorbing or scattering viscous substance can be imaged by the detector. Polarized illumination and detection can be used to enhance the response.

Abstract: Methods and devices for treatment of skin are disclosed. These methods and devices use electromagnetic radiation to create networks or patterns of treatment zones. The networks or patterns of treatment zones comprise at least four treatment zones, at least two of the treatment zones in the network or pattern are slanted at angles in the skin, and the treatment zones extend at least as deep as the dermal-epidermal junction of the skin. Producing intersecting treatment zones and/or overlapping treatment patterns can increase the effectiveness of the treatments. The devices comprise a hand piece operably coupled to a delivery element, wherein delivery of electromagnetic radiation through the device to a portion of skin produces a network or pattern of treatment zones. The use of these methods and devices results in tightening of the skin and/or improvement in the cosmetic appearance of wrinkles in the portion of skin treated.

Abstract: Methods and devices for treatment of skin are disclosed. These methods and devices use electromagnetic radiation to create networks or patterns of treatment zones. The networks or patterns of treatment zones comprise at least four treatment zones, at least two of the treatment zones in the network or pattern are slanted at angles in the skin, and the treatment zones extend at least as deep as the dermal-epidermal junction of the skin. Producing intersecting treatment zones and/or overlapping treatment patterns can increase the effectiveness of the treatments. The devices comprise a hand piece operably coupled to a delivery element, wherein delivery of electromagnetic radiation through the device to a portion of skin produces a network or pattern of treatment zones. The use of these methods and devices results in tightening of the skin and/or improvement in the cosmetic appearance of wrinkles in the portion of skin treated.

Abstract: In a fractional treatment system, an adjustable mechanism can be used to adjust the beam shape, beam numerical aperture, beam focus depth, and/or beam size to affect the treatment depth and or the character of the resulting lesions. Adjustment of these parameters can improve the efficiency and efficacy of treatment. Illustrative examples of adjustable mechanisms include a set of spacers of different lengths, a rotatable turret with lens elements of different focal distances, an optical zoom lens, and a mechanical adjustment apparatus for adjusting the spacing between two optical lens elements. In one aspect, the fractional treatment is configured with a laser wavelength that is selected such that absorption of the laser wavelength within the tissue decreases as the tissue is heated by the laser (e.g., 1480-1640 nm).

Abstract: Tissue is treated by irradiating it with a sequence of optical pulses that are directed in sequence to various sites on the tissue. During the irradiation sequence, one or more tissue properties are measured at a site(s) that has already been irradiated. These measurements are used to adjust the parameters of subsequent optical pulses in the sequence.

Abstract: A fractional treatment system can be configured with a laser wavelength that is selected such that absorption of the laser wavelength within the tissue increases as the tissue is heated by the laser (e.g., 1390-1425 nm). Desirably, the laser wavelength is primarily absorbed within a treated region of skin by water and has a thermally adjusted absorption coefficient within the range of about 8 cm?1 to about 30 cm?1. An adjustable mechanism can be used to adjust the beam shape, beam numerical aperture, beam focus depth, and/or beam size to affect the treatment depth and or the character of the resulting lesions. The system may be designed to be switchable between a treatment mode that is semi-ablative and a treatment mode that is not semi-ablative. Adjustment of these parameters can improve the efficiency and efficacy of treatment.

Abstract: Optical pattern generators use rotating reflective axicon segments to produce images that can have different dimensions along the pattern direction compared to the cross pattern direction. Examples include both single axicon pattern generators and dual axicon pattern generators that independently control the image space relative aperture and thereby control the image dimensions in two orthogonal directions.

Abstract: An optical pattern generator uses reflection from multiple (e.g., two) internal mirror surfaces mounted on a rotating support structure.

Abstract: A method of restoring hair to skin that has suffered hair loss includes optically ablating an array of spaced-apart microchannels or voids into the skin and transplanting into the voids stem cells, a scaffold and a differentiation factor for causing the stem cells to differentiate into hair follicles.

Abstract: A method of restoring hair to skin that has suffered hair loss includes optically ablating an array of spaced-apart microchannels or voids into the skin and transplanting into the voids stem cells, a scaffold and a differentiation factor for causing the stem cells to differentiate into hair follicles.

Abstract: An optical pattern generator uses reflection from multiple (e.g., two) internal mirror surfaces mounted on a rotating support structure.

Abstract: An optical pattern generator uses a rotating component that includes a number of deflection sectors containing optical elements. Each sector deflects an incident optical beam by a substantially constant angle although this angle may vary from one sector to the next. The constant deflection angle is achieved by symmetry within the deflection sector, specifically gut-ray symmetry. The rotating component may be combined with an imaging group that produces, for example, image points, spots, or lines displaced along a line locus. The image spots can also be displaced to either side of a line, for example by introducing a tilt in the orthogonal direction or by introducing light beams at various angles to the plane of symmetry.

Abstract: Systems and methods for revitalizing aging skin using electromagnetic energy that is delivered using a plurality of needles that are capable of penetrating the skin to desired depths. A particular aspect is the capability to spare zones of tissue from thermal exposure. This sparing of tissue allows new tissue to be regenerated while the heat treatment can shrink the collagen and tighten the underlying structures. Additionally, the system is capable of delivering therapeutically beneficial substances either through the penetrating needles or through channels that have been created by the penetration of the needles.

Abstract: An optical pattern uses a single rotating component. The rotating component includes a number of deflection sectors. Each sector deflects an incident optical beam by a substantially constant angular amount although this amount may vary from one sector to the next. The rotating component may be combined with an imaging lens group that produces, for example, image points, spots, or lines displaced along a line locus.

Abstract: An optical pattern uses a single rotating component. The rotating component includes a number of deflection sectors. Each sector deflects an incident optical beam by a substantially constant angular amount although this amount may vary from one sector to the next. The rotating component may be combined with an imaging lens group that produces, for example, image points, spots, or lines displaced along a line locus.

Abstract: A laser treatment device and process with controlled cooling. The device contains a cooling element with high heat conduction properties, which is transparent to the laser beam. A surface of the cooling element is held in contact with the tissue being treated while at least one other surface of the cooling element is cooled by the evaporation of a cryogenic fluid. The cooling is coordinated with the application of the laser beam so as to control the temperatures of all affected layers of tissues. In a preferred embodiment useful for removal of wrinkles and spider veins, the cooling element is a sapphire plate. A cryogenic spray cools the top surface of the plate and the bottom surface of the plate is in contact with the skin. In preferred embodiments the wavelength of the laser beam is chosen so that absorption in targeted tissue is low enough so that substantial absorption occurs throughout the targeted tissue. In a preferred embodiment for treating large spider veins with diameters in the range of 1.

Abstract: A laser treatment device and process with controlled cooling. The device contains a cooling element with high heat conduction properties, which is transparent to the laser beam. A surface of the cooling element is held in contact with the tissue being treated while at least one other surface of the cooling element is cooled by the evaporation of a cryogenic fluid. The cooling is coordinated with the application of the laser beam so as to control the temperatures of all affected layers of tissues. In a preferred embodiment useful for removal of wrinkles and spider veins, the cooling element is a sapphire plate. A cryogenic spray cools the top surface of the plate and the bottom surface of the plate is in contact with the skin. In preferred embodiments the wavelength of the laser beam is chosen so that absorption in targeted tissue is low enough so that substantial absorption occurs throughout the targeted tissue. In a preferred embodiment for treating large spider veins with diameters in the range of 1.