Crystal nucleus delivery device for cataract surgery

Abstract

The invention relates to the field of medical instruments, and aims to provide a crystal nucleus delivery device capable of realizing gradual clamping for a cataract surgery. The crystal nucleus delivery device comprises a central tube, an elastic balloon is arranged at the top end of the central tube, and the elastic balloon communicates with the central tube; a negative pressure sucker is arranged at the lower end of the central tube and communicates with the central tube; a buffer barrel is further arranged outside a sleeve below a sliding pipe, and the upper end of the buffer barrel is open and the lower end of the buffer barrel is closed; the lower end of the sliding pipe extends into the space between the buffer barrel and the sleeve to form sliding fit; and the two sides of the bottom of the buffer barrel are further provided with two air leakage holes. According to the crystal nucleus delivery device, the elastic force application of a spiral spring can be buffered, so that theaction of a curved bar is in a clamping trend of quickness, slowness and continuous slowness, and the curved bar is prevented from directly damaging a crystal nucleus after the spiral spring is released.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a crystal nucleus delivery device for cataract surgery. Background technique [0002] Cataract is one of the most common blinding eye diseases. The cornea and lens are the main refractive structures of the human eye. Under normal circumstances, the lens is transparent, and the light reaches the retina through the lens and other refractive media to clearly see the outside world. Objects, once the lens is clouded for some reason, it will affect the retinal imaging, making people unable to see things clearly, that is, the clouding of the lens will lead to vision loss and cataracts. Surgery is currently the only effective treatment for cataracts. Cataract surgery generally uses micro-incisions in the clear cornea to remove the cloudy lens by phacoemulsification. However, if the patient has a low corneal endothelial count, ultra-hard nucleus, lens subluxation, or rupture of the poster...

AI Technical Summary

Problems solved by technology

Then, because this method is directly driven by the spring, the moment the spring is released, the instantaneous force is too large, and the bent rod is easy to hit the crystal nucleus, which will cause damage to the crystal nucleus and affect the follow-up pathological research. In severe cases, it may even directly hit the crystal nucleus. Crushed, causing debris to fall, affecting delivery

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