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Image-guided femtosecond laser cataract surgery system

A femtosecond laser and surgical system technology, applied in the field of image-guided femtosecond laser cataract surgery system, can solve the problems of long time and great mental pressure on patients, and achieve the effect of improving the efficiency of nuclear fragmentation and reducing the side effects of surgery

Pending Publication Date: 2020-06-19
JIHUA LAB
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Problems solved by technology

[0003] At present, optical coherence tomography (OCT) is used to image the internal structure of eye tissue to guide femtosecond laser cataract surgery, but it takes a very long time from OCT scanning eye tissue to forming an image of eye tissue and then transmitting it to the laser emission system, and the patient suffers a lot. mental stress

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  • Image-guided femtosecond laser cataract surgery system
  • Image-guided femtosecond laser cataract surgery system
  • Image-guided femtosecond laser cataract surgery system

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Embodiment

[0060] The optical coherence tomography imaging unit provided by the present invention includes an OCT light source, an XYZ-axis three-way vibrating mirror, an XYZ-axis three-way scanning lens, a photoelectric detector, a signal amplifier, a band-pass filter, a demodulator, a photoelectric signal converter, and a rotating Functional sample stage, the imaging depth reaches 8mm; the number of scanning frames per second is 100 frames; the number of scanning times is 200,000 times / second; the retraction speed is 20mm / s; The pass filter is a band-pass filter based on polarization-maintaining fiber seamlessly spliced; the photodetector is a semiconductor photodetector; the signal amplifier is a gain fiber with a mode field diameter of 6.2 μm; the demodulator is a fiber optic modem; The photoelectric signal converter is an industrial photoelectric signal converter to realize the conversion between optical signal and electrical signal.

[0061] The optical coherence tomography imaging...

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Abstract

The invention provides an image-guided femtosecond laser cataract surgery system. The image-guided femtosecond laser cataract surgery system comprises an optical coherence tomography imaging unit, a head-up display unit, a laser galvanometer scanning unit, a human eye butt joint interface and an optical fiber transmission unit. According to the invention, the optical coherence tomography imaging unit can automatically detect the mature degree of cataract, so the intraocular structure and the crystalline lens structure are effectively detected; the density of the crystalline lens and the capsule is effectively detected; the adjustment of laser energy, frequency and diameter of cataract crystals with different hardness is achieved; the nucleus breaking efficiency is improved; in addition, the adjustment of the laser energy, frequency and diameter of the cataract crystals with different hardness can be achieved, so the nucleus breaking efficiency is improved; the boundary of the posteriorcapsule is defined; and the side effects of a surgery are reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an image-guided femtosecond laser cataract surgery system. Background technique [0002] According to the latest statistics released by the World Health Organization (WHO), 7 million people become blind every year in the world, and the total number of blind people is nearly 45 million. Cataract is currently the most common cause of blindness and visual impairment worldwide, and is a common disease in the elderly. In recent years, femtosecond laser technology has been introduced into the field of medical ophthalmology. Its application principle is to use its extremely short pulse width, small light pulse energy to obtain extremely high peak power and strong focusing ability, and can be completed in biological tissues. Precise cutting. The current methods of cataract surgery are: extracapsular extraction, non-phacoemulsification small incision surgery and phacoemulsificat...

Claims

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Application Information

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IPC IPC(8): A61F9/008
CPCA61F9/008A61F2009/00887A61F2009/00851
Inventor 周辉
Owner JIHUA LAB
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