Medizinisches Laserzentrum Luebeck Gmbh

Medizinisches Laserzentrum Lubeck Gmbh

Medizinisches Laserzentrum Luebech Gmbh

Medizinisches Laserzentraum Luebeck Gmbh

Ralf Brinkmann

Georg Schuele

Gereon Hüttmann

Reginald Birngruber

Gereon Huettmann

Andreas Fritz

Jens Horstmann

Heike Mueller

Eric Seifert

Hossameldin Abbas

Heike MÜLLER

A method and a system for detecting a movement of a surface on an irradiated sample involves a light source for irradiating the surface with a coherent light beam, a detector for detecting variations caused by the movement in a speckle pattern produced by reflections of the light beam at the surface, selecting a single speckle from the speckle pattern, and detecting the variations at the selected speckle.

Speckle interferometric method and system for detecting a movement of a surface

The invention relates to a method for photoacoustic tomography of a sample, deformations on a measurement surface of the sample being measured as a function of location and time, the deformations resulting from the absorption of a pulsed excitation radiation on at least one spectrally addressable target structure in the sample interior while emitting thermomechanical pressure waves in the direction of the measurement surface, and the measured deformations being fed to a reconstruction method for determining the position of the target structure in the sample interior.

Method for photoacoustic tomograpy

A therapeutic laser with a source of pulsed electromagnetic radiation, a control device for controlling the intensity and/or the duration of the therapeutic laser applied to the tissue, and a detection device for detecting optoacoustic signals triggered by irradiating the living tissue with the pulsed electromagnetic radiation. The therapeutic laser is characterized by an evaluation device that acts on the control device and is used for calculating a degree of quality B(t) from the optoacoustic signals detected by the detection device for individual laser pulses applied to a predetermined laser spot and determining a fit function f(t) at a predetermined point in time &#x394;t1, the fit function f(t) approximating the mean curve of B(t) for 0&#x2266;t&#x2266;&#x394;t1. The intensity and/or the irradiation time of the therapeutic laser is defined by the parameters for the predetermined laser spot, the parameters being determined for the fit function f(t).

Apparatus for gentle laser treatment of the retina

A device for examining or treating living tissue by means of local heating of the tissue by absorbing electromagnetic radiation, with at least one radiation source emitting electromagnetic radiation, a control unit for controlling the irradiation parameters of the radiation source, and at least one FD-OCT apparatus with a light source emitting a measurement light for illuminating that tissue region in which the electromagnetic radiation is absorbed by the tissue, characterized by a computational unit for carrying out the following steps: determining the depth-resolved tissue velocity in the radiation direction of the measurement light at a predetermined measurement point of the tissue from the phase information from the FD-OCT interference light, integrating the established tissue velocity over time, differentiating the calculated time integral with respect to space, and displaying the spatial derivative as a function of space and time and/or feeding the spatial derivative as a function of space and time to an evaluation module and/or feeding the spatial derivative as a function of space and time to the control unit.

Device with an OCT system for examining and treating living tissue by means of heating of the tissue by absorbing electromagnetic radiation

An apparatus for the treatment of biological, in particular living tissue comprising a treatment laser devicefor generating a pulsed treatment radiation directed on to a target tissue, in an embodiment additionally including a measurement laser devicefor generating a pulsed measurement radiation directed on to the target tissue of lower energy and shorter pulse duration than the treatment radiation, a detector devicefor measuring pressure transients induced by the measurement radiation and a control devicefor controlling the treatment radiation in dependence on the pressure transients evaluated in respect of a tissue change, wherein a regulating or control algorithm for controlling the treatment radiation is formed from the pressure transients.

Device for the treatment of biological tissue using laser radiation

This invention relates to a method for operation of an irradiation laser whereby laser pulse sequences or pulses of varying length are modified during application such that the comparability of recorded transients is retained.

Phototherapy method for irradiating biological tissue with a series of laser pulse sequences

A method and a system for the non-invasive temperature determination on biological tissue, particularly at the fundus of the eye, treated by a treatment radiation, particularly laser radiation, wherein, during the respective irradiation time, at essentially identical time intervals, additional radiation pulses of a shorter pulse duration and a lower energy are aimed at the treated biological tissue, the resulting tissue expansions and/or contractions being detected by a pressure measurement or optical measurement and, from the measuring signals, the absolute temperature values are determined and optionally the treatment radiation is controlled as a function thereof.

Method and device for non-invasive regulation of temperature with radiation, especially laser radiation of biological tissue

Disclosed is an apparatus for generating laser pulses, which has a Q-switched solid state laser and at least one nonlinear crystal, and the application of this apparatus for removing material in the biomedical field. The present invention is distinguished by the nonlinear crystal being disposed inside the resonator of the solid state laser and by a pulse prolongation unit determining the pulse form and duration of the light pulse developing in the resonator.

Growing community of inventors

Luebeck, Germany

Ralf Brinkmann