Femtosecond laser cataract emulsifying treatment system

Abstract

The invention provides a femtosecond laser cataract emulsifying treatment system which comprises an emulsifier, wherein a needle which can touch the lenticular nucleus of a cataract patient is arranged at the front end of the emulsifier; two channels which can be led to the outside of the emulsifier are arranged in the emulsifier: a negative pressure channel and a lavage suction channel; the end of the negative pressure channel led to the outside of the emulsifier is connected with a negative pressure unit capable of generating a pressure for adsorbing the lenticular nucleus; the end of the lavage suction channel led to the outside of the emulsifier is connected with a lavage suction unit capable of sucking out the emulsified lenticular nucleus; the back end of the emulsifier is connected with a femtosecond laser generator capable of generating femtosecond laser; and the femtosecond laser, the negative pressure unit and the lavage suction unit are all connected with a computer control unit. By adopting full-femtosecond laser capsulorhexis, the system imposes relatively low requirements on the experiences of the operation doctor and can realize accurate positioning of capsulorhexis through computer control.

Description

technical field [0001] The present invention relates to the technical field of medical equipment and instruments, to equipment and instruments for ophthalmic surgical treatment, and more particularly, to a femtosecond laser cataract emulsification treatment system. Background technique [0002] According to a 2004 survey by the Eye Disease Prevalence Survey Group (EDPRG), 20.5 million people in the United States had cataracts in 2000, and 30 million people are expected to have or will have cataracts by 2020. According to estimates by my country's health department, the number of cataract surgeries in my country in 2005 was about 510,000. [0003] For the treatment of cataract patients, cataract emulsification, which is a type of extracapsular excision, is currently used more. The basic method is to make a small incision of 3 mm in the limbus of the cornea and sclera, and insert the ultrasonic crusher to crush the lens nucleus and then suck it out. Phacoemulsification combin...

AI Technical Summary

Problems solved by technology

However, the existing phacoemulsification apparatus has the following disadvantages: (1) the vibration of the intraocular solution accompanied by phacoemulsification causes endothelial cell damage; The sharp angle is 30-40 degrees, and it is easy to cause rupture of the posterior capsule during surgery; (3) Traditional phacoemulsification is inconvenient to operate, and it takes a long time for doctors to learn, and rich experience is required during surgery

[0004] In addition, there is also nanosecond laser emulsification at present. The disadvantages of this kind of surgery are: (1) The nanosecond laser is at the nanojoule level, the repetition rate is lower than that of the femtosecond laser, and the working speed is slow; (2) The nanosecond laser energy is large and easy Penetrate the crystal, directly hit the excess energy on the retina, and affect the retinal cells; (3) The nanosecond laser works slowly, and the emulsification efficiency is low. When the nucleus is broken, it is not easy to break the cataract crystal nucleus evenly. The gap with the inner wall of the handle is small, and it is easy to have turbulent flow when the broken nucleus is sucked out. Manual capsulorhexis requires long clinical experience

Although the quality and safety of cataract surgery can be improved by using femtosecond laser in this patent, it cannot achieve precise capsulorhexis during capsulorhexis, and the error is large

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