CN215875197U - Cutter for cornea limbus astigmatism axial marking - Google Patents

Abstract

A knife tool for the axial marking of corneal limbus astigmatism. The cornea marker mainly solves the problem that the cutter of the existing cornea marker is possibly penetrated through the cornea and is dangerous to use. The method is characterized in that: including cutter arbor (1), be equipped with blunt portion (11) and cutting part (12) on the cutter arbor, cutting part (12) are the cutting edge structure of circular arc transition. The utility model provides a cutter for the axial marking of corneal limbus astigmatism, the cutting edge of the cutter is in a circular arc transition structure, the cornea is prevented from being pierced, the use is safer, and furthermore, a cross rod can be arranged, so that the marking is convenient.

Description

Cutter for cornea limbus astigmatism axial marking

Technical Field

The utility model relates to the field of medical equipment, in particular to a cutter for axial marking of limbus astigmatism.

Background

Cataract surgery has now entered the age of refractive surgery. For patients with low astigmatism, a certain amount of astigmatism can be loosened by making a corneal incision on the steepest axis of corneal astigmatism, to reduce the effect of corneal astigmatism on the performance of the procedure. In addition, for a patient implanted with the astigmatic intraocular lens, the intraocular lens needs to calculate the axial direction in which the astigmatic intraocular lens needs to be implanted according to the astigmatic condition of the cornea of the patient and the power of the intraocular lens, and the accurate astigmatic intraocular lens can obtain a good astigmatic correction effect only by being implanted in the axial direction. It is therefore desirable to make axial marks on the patient's cornea prior to surgery.

The existing cornea marking method comprises two methods, one is to firstly dye the head end of a marker by a marking pen and then scratch the head end on the cornea, the other is to scratch the corneal epithelium firstly and then dye the position of the epithelium by the marking pen, however, most of the existing markers are modified by a 1ml syringe needle, have sharp corners and are possibly punctured on the cornea, and the use is dangerous. And the 1ml syringe needle is flat and straight, and the influence of the covering of the upper eyelid and the lower eyelid and the shielding of slit lamp equipment cause that the corneal limbus marking operation in the vertical direction (above and below) is difficult, the marking accuracy is reduced, and the marking line which is as accurate as a scale mark is difficult to manufacture.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the background art, the utility model provides a knife for the axial marking of limbus astigmatism, which mainly solves the problem that the knife of the existing corneal marker is dangerous to use because the knife is likely to pierce the cornea.

The utility model provides a knife for limbus astigmatism axial marker, includes the cutter arbor, be equipped with blunt portion and cutting part on the cutter arbor, the cutting part is the cutting edge structure of circular arc transition.

The blunt part is an arc surface arranged on the cutter bar.

The cutter bar fixing device is characterized by further comprising a cross bar connected with the cutter bar, and the cross bar and the cutter bar are arranged vertically and oppositely.

The blade part is arranged on the outer side of the blunt part.

The outer circumferential wall of the cross rod is an arc transition surface.

The cross section of the cross bar is circular or oval.

The cross bar is also provided with a sleeve connected with the needle cylinder.

The sleeve is provided with a mounting hole, and the cross rod is matched with the mounting hole in a clamping manner.

The outer side end face of the blade part is a plane vertical to the horizontal plane.

The utility model has the beneficial effects that: the utility model provides a cutter for the axial marking of corneal limbus astigmatism, the cutting edge of the cutter is in a circular arc transition structure, the cornea is prevented from being pierced, the use is safer, and furthermore, a cross rod can be arranged, so that the marking is convenient.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of another embodiment of the present invention.

Fig. 3 is a partial structural view of a tool bar according to an embodiment of the present invention.

Fig. 4 is a schematic top view of a tool bar according to an embodiment of the utility model.

Fig. 5 is a schematic view of a structure mounted on the injector according to an embodiment of the present invention.

Detailed Description

The utility model will be further described with reference to the accompanying drawings in which: as shown in the figure, a cutter for limbus astigmatism axial marking comprises a cutter bar 1, wherein a blunt part 11 and an edge part 12 are arranged on the cutter bar, and the edge part 12 is of an arc transition cutting edge structure. The blunt part is a place without an edge part in a broad sense, and specifically can be a part without a sharp corner, such as a circular arc surface or a wave surface, so as to prevent pricking on the cornea, and on the other hand, the edge part is a part without a sharp corner, such as a circular arc transition edge, so as not to prick the cornea, and the edge part specifically can be in a shape of a circle, an ellipse, or even a wave.

In the present invention, as shown in the figure, the blunt portion is an arc surface provided on the tool bar. Preferably, the arc surface is used as a blunt part, that is, the outer wall of the arc surface is an excessively smooth arc surface, so that the cornea can be effectively prevented from being punctured or cut.

In the utility model, as shown in the figure, the cutter bar device further comprises a cross bar 2 connected with the cutter bar, and the cross bar and the cutter bar are oppositely and vertically arranged. Further, still be equipped with the horizontal pole, can direct manual operation horizontal pole, also can increase other instruments, for example install on the cylinder, this horizontal pole and the relative perpendicular setting of cutter arbor, can rotate the horizontal pole like this and make the cutter arbor rotate thereupon, conveniently mark vertical direction's limbus (top and below, this position has equipment, eyelid to shelter from mostly, adopts conventional marker mark difficulty).

In the present invention, as shown in the drawing, the blade portion is provided outside the blunt portion. More convenient to use.

In the present invention, as shown in the figure, the outer circumferential wall of the cross bar is a circular arc transition surface. The possibility of damaging the cornea is reduced, and the use is safer.

In the present invention, as shown in the drawings, the cross-section of the cross-bar is circular or elliptical. The hand-held direct rotation is convenient.

In the present invention, as shown in the figure, the cross bar is also provided with a sleeve 3 connected with a needle cylinder 9. The marker can be conveniently arranged on the needle cylinder through the sleeve, the sleeve and the marker can be replaced after the marker is used up, and the use is more convenient.

In the present invention, as shown in the figure, the sleeve is provided with a mounting hole 31, and the cross bar is in snap fit with the mounting hole. The marker can be conveniently arranged in the mounting hole.

In the present invention, as shown in the drawing, the blade outer end surface is a plane perpendicular to a horizontal plane.

The embodiments described with reference to the drawings are illustrative and are intended to be illustrative of the utility model and should not be construed as limiting the utility model. The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims (9)

1. A knife for the axial marking of corneal limbus astigmatism is characterized in that: including cutter arbor (1), be equipped with blunt portion (11) and cutting part (12) on the cutter arbor, cutting part (12) are the cutting edge structure of circular arc transition.

2. The corneal limbal astigmatic axial marking tool of claim 1, wherein: the blunt part is an arc surface arranged on the cutter bar.

3. The corneal limbal astigmatic axial marking tool of claim 1, wherein: the cutter bar fixing device is characterized by further comprising a cross bar (2) connected with the cutter bar, and the cross bar and the cutter bar are arranged vertically and oppositely.

4. The corneal limbus astigmatic axial marking tool of claim 3, wherein: the blade part is arranged on the outer side of the blunt part.

5. The corneal limbus astigmatic axial marking tool of claim 3, wherein: the outer circumferential wall of the cross rod is an arc transition surface.

6. The corneal limbus astigmatic axial marking tool of claim 4, wherein: the cross section of the cross bar is circular or oval.

7. The corneal limbus astigmatic axial marking tool of claim 3, wherein: the cross bar is also provided with a sleeve (3) connected with a needle cylinder (9).

8. The corneal limbus astigmatic axial marking tool of claim 7, wherein: the sleeve is provided with a mounting hole (31), and the cross rod is matched with the mounting hole in a clamping manner.

9. The corneal limbal astigmatic axial marking tool of claim 1, wherein: the outer side end face of the blade part is a plane vertical to the horizontal plane.

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