Dermatological systems and methods for providing a therapeutic laser treatment using a handpiece delivering one or more therapeutic laser pulses to a target skin area along a first optical path, and sensing the temperature of the target skin area based on infrared energy radiating from the target skin area along a second optical path generally counterdirectional to the first optical path, and sharing a common optical axis with the first optical path for at least a portion of the first and second optical paths. The handpiece may also provide contact cooling for a first skin area comprising the target skin area.

A laser device for dermocosmetic, medical, or aesthetic treatments, comprising: A) a laser system comprising a lamp-pumped source; B) an optical fibre transporting the laser beam produced by said source; C) a handpiece or a scanner connected to said optical fibre, comprising a lens and mirror system projecting the image of the laser beam onto the area to be treated; characterized in that said optical fibre has a rectangular section and said image is rectangular. A method of dermocosmetic laser treatment characterized by rectangular laser spots is also claimed. It is a further object of the present invention a tracing kit, which allows the marking of a surface area, preferably of biological tissue, with a fluorescent or photosensitive substance invisible to light. Such an invisible and fluorescent or photosensitive substance absorbs the electromagnetic radiation with the proper wavelength emitted by the illuminator and reflects it in the visible spectrum.

Dermatological systems and methods for providing a therapeutic laser treatment wherein the duration of a therapeutic laser pulse is based on one or more determinations of a surface temperature of the skin during the delivery of the pulse. Initiation of the therapeutic laser pulse may be based on sensed skin temperature during a cooling of the skin prior to initiation of the pulse.

A light based skin treatment device comprises a laser light source for providing a pulsed incident light beam for treating skin by laser induced optical breakdown of hair or skin tissue. In one arrangement, a focusing system has a pre-focusing lens for increasing the convergence of the an incident light beam and a skin contact lens having convex light input and light exit surfaces. The focal spot position is controlled by adjusting a spacing between the pre-focusing lens and the skin contact lens. In another arrangement, there is an adjustable lens system before an adjustable focusing system for providing compensation for aberration in the focusing system.

The presently disclosed subject matter provides techniques for inducing collagen cross-linking in human tissue, such as cartilage, by inducing ionization of the water contained in the tissue to produce free radicals that induce chemical cross-linking in the human tissue. In an embodiment, a femtosecond laser operates at sufficiently low laser pulse energy to avoid optical breakdown of the tissue being treated. In an embodiment, the femtosecond laser operates in the infrared frequency range.

For the purposes of working on eye tissue, an ophthalmological apparatus comprises a laser source that is configured to produce a pulsed laser beam, a focusing optical unit that is configured to focus the pulsed laser beam into the eye tissue, and a scanner system for deflecting the pulsed laser beam onto work target points in the eye tissue. The scanner system is configured to guide the pulsed laser beam onto work target points along a scan line that extends across a work line at an alignment angle and to tilt the scan line depending on the work target point on the work line in such a way that the scan line extends substantially along an outer face of a lenticule to be cut in the eye tissue.

A cooling element includes a frame including one or more datums. The cooling element also includes a first window including a first proximal surface and a first distal surface. The first window is sealed to the frame. The cooling element further includes a second window sealed to the frame. The second window includes a second proximal surface and a second distal surface. The second window is configured to contact a target tissue or a tissue adjacent to the target tissue via the second distal surface. The cooing element also includes a coolant chamber located between the first distal surface of the first window and the second proximal surface of the second window and configured to receive a coolant. The first window, the second window and the coolant chamber are configured to receive and electromagnetic radiation (EMR), and transmit a portion of the received EMR to the target tissue.

The present disclosure provides, according to some embodiments, methods and systems for selectively reducing, blocking or inhibiting at least part of the neural activity in an organ of a subject. In preferred embodiments, the method and system are used for selectively blocking at least part of the neural activity in a duodenum of a subject in need thereof. According to some embodiments, the selective blocking occurs through use of laser radiation. According to some embodiments, the selective blocking comprises causing damage to at least part of sensory nerves located within a target area while maintaining functional activity of tissue surrounding the sensory nerves. According to some embodiments, the sensory nerves include neurons configured to transmit signals triggered by food passing through the duodenum, such as, but not limited to, neurohormonal signals.

An active tracking system includes an imager configured to image the temperature of a biological tissue and a heating laser configured to heat regions of the biological tissue. The imager locates high-temperature regions of the biological tissue and the heating laser is controlled to point toward target regions of the biological tissue based on the located high-temperature regions. The active tracking system can be used to control a heating laser to continuously heat a target region of a biological tissue even when the target region moves relative to the heating laser. The active tracking system could allow one or more target regions of a biological tissue to be ‘tagged’ with heat by the heating laser and to be tracked even when the one or more target regions move relative to the heating laser. Devices and methods for operating such active tracking systems are also provided.

A surgical laser system includes a pump module configured to produce pump energy within an operating wavelength, a gain medium configured to convert the pump energy into first laser energy, a non-linear crystal (NLC) configured to convert a portion of the first laser energy into second laser energy, which is a harmonic of the first laser energy, an output, and a first path diversion assembly having first and second operating modes. When the first path diversion assembly is in the first operating mode, the first laser energy is directed along the output path to the output, and the second laser energy is diverted from the output path and the output. When the first path diversion assembly is in the second operating mode, the second laser energy is directed along the output path to the output, and the first laser energy is diverted from the output path and the output.