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Laser device for ophthalmology

An ophthalmic laser and laser device technology, applied in laser surgery, ophthalmic surgery, ophthalmic treatment, etc., can solve problems such as impossible to obtain, and achieve the effect of simple integration and high design flexibility

Active Publication Date: 2014-07-30
ALCON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the case of laser-induced light breakthroughs, the focus size determines the intensity of the damage, so in the case of purely fs-based refractive treatment methods, it is impossible to obtain the same high-precision correction as in the case of ablation, at least not at present. possible

Method used

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  • Laser device for ophthalmology
  • Laser device for ophthalmology

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Embodiment Construction

[0034] Such as figure 1 The illustrated exemplary embodiment of the laser device takes the form of a monolithic ophthalmic laser diagnostic system 100 particularly adapted for eye refraction treatment to eliminate visual defects in the eye 360 ​​to be treated. The laser diagnostic system 100 includes an excimer laser 110 constituting a first laser source, the excimer laser 110 generating a pulsed laser beam 140 having a UV wavelength. For example, an excimer laser is an ArF reference laser emitting at 193 nm. The excimer laser 110 is assigned control electronics 120 with appropriate control software and operating software.

[0035] The laser diagnostic system 100 comprises, via a further laser source, an fs laser 130 which preferably takes the form of a fiber laser and which generates pulsed laser radiation with a pulse width in the femtosecond range. For example, the pulse width of the laser pulses generated by the fs laser 130 is between 100 fs and 800 fs; the laser radiat...

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Abstract

The invention relates to a laser device for ophthalmology, comprising components for providing a first pulsed laser beam (140) having beam properties tuned for ablating corneal material, and a first pulsed laser beam (290) having beam properties tuned for introducing an incision in the eye tissue. The components comprise separate laser sources (110, 130) for generating the two laser beams, and a plurality of optical elements guiding the two laser beams on separate beam paths to each beam exit location and focusing the same on a focal point located outside of the beam exit location. According to the invention, the optical elements comprise an optical fiber (250) for guiding the second laser beam, wherein at least the two laser sources are located in a common housing (340) and at least part of the length of the optical fiber runs within the housing.

Description

technical field [0001] The present invention relates to ophthalmic laser devices. Background technique [0002] In refractive ophthalmic surgery, the refractive properties of the eye are altered by intervention aimed at correcting the visual defect in the patient's eye. In this regard, the so-called LASIK (Laser In-situ Keratomileusis) method plays a major role, in which first a planar corneal incision is made, thus adding a small cover disc, the so-called valve. The flap can be folded on one side to expose the underlying corneal tissue (stroma). Next, the matrix tissue is ablated (ablated) with a laser (generally an excimer laser) according to the ablation profile determined for each individual patient. After this, the flap is folded back and the wound can heal relatively quickly. [0003] Photoablation of corneal tissue is based on damage to the tissue material caused by the absorption of radiant energy. The wavelength of radiation used for ablation must be below the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F9/01A61B18/20A61B18/22A61F9/009
CPCA61B2018/202A61F2009/00872A61F2009/0087A61B18/201A61F9/00804A61B18/22A61F9/008A61F9/00836A61F9/00827A61F9/009A61F9/0084A61B2018/208A61B18/20
Inventor 克劳斯·沃格勒克里斯托夫·德尼茨基奥拉夫·基特尔曼
Owner ALCON INC
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