Femtosecond laser cataract emulsification instrument

Abstract

The invention provides a femtosecond laser cataract emulsification instrument which comprises an emulsification instrument body. A needle capable of being in contact with a lenticular nucleus of a cataract patient is arranged at the front end of the emulsification instrument body, and a reflector is arranged at the front end of the needle. Two channels capable of leading to the outside of the emulsification instrument body are arranged in the emulsification instrument body and comprise the negative pressure channel and the filling and suction channel. A splitter is obliquely arranged at the front end in the emulsification instrument body, and a first lens, a rotatable wedge-shaped mirror and a movable second lens are sequentially arranged at the positions, behind the splitter, in the emulsification instrument body. According to the emulsification instrument, full femtosecond lasers are used for tearing bladders, the requirement for the experience of surgeons is low, and the emulsification efficiency is high.

Description

technical field [0001] The invention relates to the technical field of medical equipment and instruments, in particular to a femtosecond laser cataract emulsification instrument. Background technique [0002] According to a 2004 survey by the Eye Disease Prevalence Survey Group (EDPRG), 20.5 million people in the United States suffered from cataracts in 2000, and it is estimated that 30 million people will suffer from or will soon suffer from cataracts by 2020. According to the estimation of our health department, the number of cataract operations in my country in 2005 was about 510,000. [0003] For the treatment of cataract patients, cataract emulsification is currently used more often, which is a kind of extracapsular extraction. The basic method is to make a small 3mm incision at the corneoscleral limbus, insert an ultrasonic pulverizer to pulverize the crystal nucleus, and then suck it out. Phacoemulsification combined with intraocular lens implantation is a more effec...

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

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