Cornea axial position positioner

Abstract

The utility model relates to the technical field of medical auxiliary instruments, and particularly discloses a cornea axial position locator which comprises a locating ring, a handle and a locating block, the locating ring is in a circular ring shape, scales used for marking angles are arranged on the upper surface of the locating ring around the axis of the locating ring, one end of the handle is fixedly connected with the edge of the outer side of the locating ring, and the other end of the handle is fixedly connected with the locating block. The positioning block is in sliding fit with the positioning ring and can rotate by 360 degrees around the axis of the positioning ring, a positioning face and marking teeth are arranged on the positioning block, the positioning face and the marking teeth are located on the upper surface and the lower surface of the positioning ring respectively, and the positioning face and the marking teeth can correspond to one scale at the same time. The cornea axial position locator disclosed by the utility model can be used for accurately marking and locating an astigmatism angle.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to a corneal axis locator. Background Art

[0002] At present, in astigmatic lens cataract surgery and astigmatic ICL myopia correction surgery, it is usually necessary to use a corneal axis locator to locate the corneal horizontal axis before surgery and locate the astigmatic axis of the astigmatic lens to be implanted during surgery. For example, the utility model patent with publication number CN218651775 U discloses a corneal horizontal axis locator, which includes a positioning ring, a horizontal positioning groove, a corneal marking tooth and a handle. Horizontal positioning grooves are arranged on the front of the positioning ring along the two ends of the transverse diameter of the positioning ring, and corneal marking teeth are arranged on the back of the positioning ring corresponding to the horizontal positioning grooves, and a handle is installed on one side of the positioning ring. However, when the corneal horizontal axis locator is used, it can only be marked based on the operator's experience, and the astigmatism angle cannot be accurately marked and located. Summary of the invention

[0003] The utility model aims to solve at least one of the above-mentioned technical problems and provides a corneal axis locator that can accurately mark and locate the astigmatism angle.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a corneal axis locator, including a positioning ring, a handle and a positioning block, the positioning ring is in a circular ring shape, and the upper surface of the positioning ring is provided with a scale for marking angles around its axis, one end of the handle is fixedly connected to the outer edge of the positioning ring, the positioning block is slidably matched with the positioning ring, and can rotate 360° around the axis of the positioning ring, the positioning block is provided with a positioning surface and a marking tooth, the positioning surface and the marking tooth are respectively located on the upper surface and the lower surface of the positioning ring, and the positioning surface and the marking tooth can correspond to one scale at the same time.

[0005] Preferably, a sliding groove which is slidably matched with the positioning block is arranged on the positioning ring around its axis.

[0006] Preferably, the positioning ring comprises an upper ring and a lower ring which are detachably fixedly connected, and inner edges of the upper ring and the lower ring are surrounded by grooves, and the two grooves are configured to form the sliding groove.

[0007] Preferably, the positioning block comprises a rotating ring in the shape of an annular ring, a positioning piece is detachably provided on the upper surface of the rotating ring, the positioning surface is provided on the positioning piece, and marking teeth are provided on the lower surface of the rotating ring.

[0008] Preferably, the scale is arranged on the outer edge of the positioning ring.

[0009] Preferably, the handle is arranged obliquely relative to the positioning ring.

[0010] The beneficial effect is: compared with the prior art, the corneal axis locator of the utility model is provided with a scale for marking angles on the positioning ring, and a positioning surface and marking teeth are provided on the positioning block. The positioning block can be rotated so that the positioning surface on the positioning block is rotated to the desired marking angle, and then the positioning ring is moved toward the cornea so that the positioning teeth on the positioning block press an indentation on the cornea, thereby achieving accurate marking of the astigmatism angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0012] Figure 1 This is a structural schematic diagram of a corneal axis locator of the utility model;

[0013] Figure 2 It is a schematic diagram of the matching structure of the positioning ring and the positioning block;

[0014] Figure 3 It is a structural schematic diagram of the positioning ring;

[0015] Figure 4 This is a schematic diagram of the structure of the positioning block. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is referred to as being "set in the middle", it does not only mean being set in the middle, as long as it is not set at both ends within the range defined by the middle. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0019] like Figures 1 to 4 As shown, a corneal axis locator comprises a positioning ring 1, a handle 2 and a positioning block 3. The positioning ring 1 is in a circular shape, and the upper surface of the positioning ring 1 is provided with a scale 4 for marking angles around its axis. One end of the handle 2 is fixedly connected to the outer edge of the positioning ring 1. The positioning block 3 is slidably matched with the positioning ring 1 and can rotate 360° around the axis of the positioning ring 1. The positioning block 3 is provided with a positioning surface 5 and a marking tooth 6. The positioning surface 5 and the marking tooth 6 are respectively located on the upper surface and the lower surface of the positioning ring 1, and the positioning surface 5 and the marking tooth 6 can correspond to one scale 4 at the same time.

[0020] A corneal axis locator of the utility model is provided with a scale 4 for marking angles on a positioning ring 1, and a positioning surface 5 and marking teeth 6 are provided on a positioning block 3. The positioning block 3 can be rotated so that the positioning surface 5 on the positioning block 3 is rotated to the angle required for marking, and then the positioning ring 1 is moved toward the cornea so that the positioning teeth on the positioning block 3 press an indentation on the cornea, thereby achieving accurate marking of the astigmatism angle.

[0021] In one embodiment of the present application, a slide groove 7 which is slidably matched with the positioning block 3 can be provided on the positioning ring 1 around its axis, and the slide groove 7 is slidably matched with the positioning block 3 to achieve 360° rotation of the positioning block 3 around the axis of the positioning ring 1.

[0022] Furthermore, the positioning ring 1 may include an upper ring 8 and a lower ring 9 that are detachably fixedly connected. Specifically, the upper ring 8 and the lower ring 9 may be detachably fixedly connected, and the inner edges of the upper ring 8 and the lower ring 9 are surrounded by grooves 12, and the two grooves 12 are arranged opposite to each other so that the two grooves 12 are configured to form the aforementioned slide groove 7.

[0023] Furthermore, the positioning block 3 may include a rotating ring 10 in the shape of an annular ring, and a positioning piece 11 is detachably provided on the upper surface of the rotating ring 10. Specifically, the positioning piece 11 can be detachably fixed on the upper surface of the rotating ring 10 by screws, and the positioning surface 5 is provided on one side surface of the positioning piece 11, and the positioning surface 5 is perpendicular to the upper surface of the positioning ring 1. The lower surface of the rotating ring 10 is provided with a marking tooth 6, and the marking tooth 6 protrudes from the lower surface of the positioning ring 1, so that the marking tooth 6 can make an indentation on the cornea.

[0024] In another specific embodiment of the present application, the scale 4 can be set on the outer edge of the positioning ring 1, and the range of the scale 4 is 0-360°, and in order to achieve accurate positioning of the angle as much as possible, the accuracy of the scale 4 is 1°, that is, it can achieve accurate positioning of 1°.

[0025] In the present application, one end of the handle 2 can be fixedly connected to the positioning ring 1 by welding or screw connection, and the handle 2 is tilted relative to the positioning ring 1 to facilitate the operator to mark the angle.

[0026] The above embodiments are only used to illustrate the technical solution of the utility model but not to limit it. Any modification or equivalent substitution that does not deviate from the spirit and scope of the utility model shall be included in the scope of the technical solution of the utility model.

Claims

1. A corneal axis locator, characterized in that: The invention comprises a positioning ring (1), a handle (2) and a positioning block (3); the positioning ring (1) is in a circular ring shape, and a scale (4) for marking an angle is arranged on the upper surface of the positioning ring (1) around its axis; one end of the handle (2) is fixedly connected to the outer edge of the positioning ring (1); the positioning block (3) is slidably matched with the positioning ring (1) and can rotate 360 ​​degrees around the axis of the positioning ring (1); a positioning surface (5) and a marking tooth (6) are arranged on the positioning block (3); the positioning surface (5) and the marking tooth (6) are respectively located on the upper surface and the lower surface of the positioning ring (1); and the positioning surface (5) and the marking tooth (6) can correspond to one scale (4) at the same time.

2. A corneal axis locator according to claim 1, characterized in that: The positioning ring (1) is provided with a sliding groove (7) around its axis, which is slidably matched with the positioning block (3).

3. A corneal axis locator according to claim 2, characterized in that: The positioning ring (1) comprises an upper ring (8) and a lower ring (9) which are detachably fixedly connected, and the inner edges of the upper ring (8) and the lower ring (9) are surrounded by grooves (12), and the two grooves (12) are configured to form the sliding groove (7).

4. A corneal axis locator according to claim 3, characterized in that: The positioning block (3) comprises a rotating ring (10) in the shape of an annulus, a positioning piece (11) is detachably provided on the upper surface of the rotating ring (10), a positioning surface (5) is provided on the positioning piece (11), and a marking tooth (6) is provided on the lower surface of the rotating ring (10).

5. The corneal axis locator according to claim 1, characterized in that: The scale (4) is arranged on the outer edge of the positioning ring (1).

6. A corneal axis locator according to claim 1, characterized in that: The handle (2) is arranged obliquely relative to the positioning ring (1).

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