Vitreous hummor cutter

Abstract

The invention discloses a vitreous humor cutter, comprising an inserting component with an inner cavity and a movable component installed in the inner cavity, wherein the movable component has a cutting end, which is characterized in that: at least two pores are fixed at a side edge of the inserting component, an open pore is fixed on the movable component, and the upper and the lower edges of theopen pore are slots. The open pore on the movable component of vitreous humor cutter of the invention moves between the at least two pores of the on the side edge of the inserting component, which can forms cutting action in reciprocation process, remains continuity of cutting, is convenient to a suction device for sucking, decreases pressure fluctuation due to discontinuous cutting action, and raises efficiency for one time under a same cutting frequency; and the identification on the inserting component may be convenient for identifying and controlling the inserting deepness.

Description

vitreous cutter technical field The invention relates to a medical device, in particular to a vitreous body cutter for cutting the vitreous body in the eye. Background technique The vitreous cutter is a device used to cut and absorb the vitreous in the eye during the operation. The existing vitreous cutter is as described in the Chinese invention patent application CN1431889A or the Chinese utility model CN2440479, as shown in Figure 1 and Figure 1. 2, generally includes an interface member 302, an insertion member 304 having a lumen 314, and side holes 308 near its ends. The cutting and aspiration device 300 further includes a moving member 310 having a cutting end 312 for cutting, the moving member 310 is disposed in a lumen 314 and is operatively and mechanically connected to the interface member 302 . The moving member 310 can move back and forth cyclically in the inner cavity 314 to drive the front end of the cutter. More specifically, the moving member cutting end ...

AI Technical Summary

Problems solved by technology

In the above-mentioned vitrectomy device, it can be seen that the insertion member 304 is a smooth rod, and it is difficult to judge the insertion depth during the operation, and the movement and cutting of the moving member 310 is pulsed, which is not conducive to the continuous suction of the suction port 320.

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