Sie Ag Surgical Instrument Engineering

Rowiak Gmbh

Laser Zentrum Hannover E.v.

Nowak, Bernhard

Hartung, Jörg

Tammo Ripken

Holger Lubatschowski

Christian Rathjen

Wolfgang Zesch

Karl Michael Deyerler

Heiko Meyer

Uwe Oberheide

Jörg Hartung

Bernhard Nowak

An ophthalmological apparatus includes a base station having a light source generating light pulses, and an application head mountable on an eye having a light projector for focussed projection of the light pulses for punctiform breakdown of eye tissue. The application head has movement drivers moving the light projector in a feed direction and a first scanning direction. A scanner in the base station deflects the light pulses in a second scanning direction. The ophthalmological apparatus includes an optical transmission system transmitting deflected light pulses from the base station to the application head, and superimposing the light pulses deflected in the second scanning direction onto the movement of the light projector in the first scanning direction. Light sources with high light pulse rates, for example femtosecond lasers may be used, without impractical enlargement of the size of the application head.

Ophthalmologic device for breaking down eye tissue

A device for processing material of a workpiece, the device including a pulsed processing laser, a focusing lens, a beam-deflection unit, a control unit and a confocal detector unit. The intensity of the laser radiation is variable. An imaging unit is provided to detect structures within the workpiece using electromagnetic radiation, wherein the electromagnetic radiation of the imaging unit is radiated via the beam-deflection unit and the focusing lens into the workpiece, and evaluating device is provided and compares the position of the focus of the laser radiation determined by the detector unit with the expected position of the focus in the image of the workpiece obtained by the imaging unit.

Device for processing material of a workpiece and method for calibrating such a device

The invention relates to a method for removing material by means of a laser, wherein a sequence of laser pulses is generated and an area of material to be machined is irradiated with the sequence of laser pulses. Methods of this kind are used to cut a number of different materials. One problem with this method is that thermal or mechanical damage occurs in the surroundings of the area being machined and causes impairment of areas of material that are not being machined. The invention solves this problem by the pulse energy of a single pulse in the sequence of laser pulses being lower than the laser pulse energy required to produce material removal using an isolated laser pulse in the region irradiated with the single laser pulse of the sequence of laser pulses.

Method and device for the removal of material by means of laser pulses

An opthalmological apparatus includes a base station having a light source for generating light pulses, and an application head mountable on an eye having a light projector for the focussed projection of the light pulses for punctiform breakdown of eye tissue. The application head has drivers for moving the light projector in a feed direction and in a first scanning direction. A scanner is arranged in the base station in order to deflect the light pulses in a second scanning direction. The opthalmological apparatus includes an optical transmission system for transmitting deflected light pulses from the base station to the application head, and for superimposing the light pulses deflected in the second scanning direction onto the movement of the light projector in the first scanning direction.

An opthalmological apparatus () comprises a base station () having a light source () for generating light pulses, and an application head () which can be mounted on an eye () having a light projector () for the focussed projection of the light pulses for punctiform breakdown of eye tissue (). The application head () additionally has movement drivers () for moving the light projector () in a feed direction and in a first scanning direction. A scanner () is arranged in the base station () in order to deflect the light pulses in a second scanning direction. In addition, the opthalmological apparatus () comprises an optical transmission system for transmitting deflected light pulses from the base station () to the application head (), and for superimposing the light pulses deflected in the second scanning direction onto the movement of the light projector () in the first scanning direction. It is possible to use light sources with high light pulse rates, for example femtosecond lasers, without the need for impractical enlargement of the overall size of the application head () owing to the scanner. In addition, it is possible while safeguarding a manageable overall size of the application head () to make use of light sources with high light pulse rates, something which increases the accuracy of treatment and reduces the burden on the eye ().

The invention concerns surgical lasers and their controllers as well as methods for the treatment of an eye lens, especially for the treatment of presbyopia.

Control device for a surgical laser

An ophthalmological apparatus () comprises a base station () having a light source () for generating light pulses, and an application head () which can be mounted on an eye () having a light projector () for the focussed projection of the light pulses for punctiform breakdown of eye tissue (). The application head () additionally has movement drivers () for moving the light projector () in a feed direction and in a first scanning direction. A scanner () is arranged in the base station () in order to deflect the light pulses in a second scanning direction. In addition, the ophthalmological apparatus () comprises an optical transmission system for transmitting deflected light pulses from the base station () to the application head (), and for superimposing the light pulses deflected in the second scanning direction onto the movement of the light projector () in the first scanning direction. It is possible to use light sources with high light pulse rates, for example femtosecond lasers, without the need for impractical enlargement of the overall size of the application head () owing to the scanner. In addition, it is possible while safeguarding a manageable overall size of the application head () to make use of light sources with high light pulse rates, something which increases the accuracy of treatment and reduces the burden on the eye ().

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Wunstorf, Germany

Tammo Ripken