Cornea three-point marker for SMILE operation

Abstract

The utility model relates to the technical field of cornea marking, and discloses a cornea three-point marker for SMILE operation, which comprises a handle, a connecting rod, a semicircular plate with three marking tool bits, a circular positioning hole and three bearing scales, wherein the two marking tool bits are symmetrically distributed at the two ends of the horizontal diameter of the semicircular plate, the third marking tool bit is located at the lower end of the vertical diameter of the semicircular plate, the three marking tool bits protrude downwards out of the same horizontal plane, the distances between the marking tool bits are the same, and the cornea three-point marking device can achieve cornea three-point marking conveniently and rapidly and is high in accuracy.

Description

Technical Field

[0001] This utility model relates to the field of corneal marking technology, and in particular to a corneal three-point marker for SMILE surgery. Background Technology

[0002] Studies have shown that manual rotation compensation after corneal marking can enhance the astigmatism correction effect of SMILE surgery. However, the most common corneal marking method for manual rotation compensation during SMILE surgery is currently the use of a corneal marking pen. The specific procedure is as follows: the patient is instructed to sit in front of the slit lamp, looking straight ahead. The slit lamp is adjusted to a horizontal position, ensuring that the light band passes through the center of the cornea and pupil. A sterile corneal marking pen is used to mark two points at the 3 o'clock and 9 o'clock positions, respectively, at the center of the corneal limbus and pupillary limb, with the two points 7-8 mm apart on the horizontal meridian. If three-point marking is required, a mark is made at the 6 o'clock position. This method relies entirely on the surgeon's subjective judgment and may introduce significant human error. Furthermore, existing corneal markers are all two-point markers, and the distance between the marking points is usually 10 mm, exceeding the surgeon's maximum visible range of 8.5 mm under the eyepiece or observation screen, thus limiting the application of manual rotation compensation during SMILE surgery. Therefore, developing novel corneal markers to achieve more precise three-point marking for intraoperative compensation of eye rotation is crucial for improving astigmatism correction in SMILE surgery.

[0003] Currently, the most common method for preoperative corneal marking in clinical practice for SMILE patients is manual marking using a corneal marking pen or a 1mL syringe needle. However, this method has the following drawbacks:

[0004] First, the marking process relies entirely on the operator's subjective operation, making it difficult to accurately position the marking points in the expected locations. At the same time, controlling the distance between marking points is also quite difficult and easily introduces human error.

[0005] If three-point marking is required, the operation is more complicated and time-consuming, which not only reduces the operator's work efficiency, but also increases the requirements for the operator's operating skills. Therefore, the three-point marking method has not been widely used in clinical practice.

[0006] Furthermore, using a 1mL syringe needle for marking not only damages the corneal epithelium, but also results in colorless markings. This requires surgeons to spend extra time and effort finding the markings during the procedure. Therefore, corneal marking pens are often used for corneal refractive surgery patients. However, when using a corneal marking pen, the size and clarity of the markings can vary due to uneven pressure. Sometimes, the markings may even become blurred or diffused, potentially leading to invalid markings and affecting the accuracy and efficiency of the surgery.

[0007] Commercially available corneal markers are limited to two-point marking, failing to meet the needs of some refractive surgery patients requiring three-point marking. Furthermore, under a slit-lamp microscope, the surgeon must hold the marker vertically to perform horizontal marking, which is easily obstructed by the eyelids, brow ridge, forehead, and cheekbone. This not only increases the difficulty of the procedure but may also reduce patient comfort and cooperation, impacting the overall experience for both doctor and patient. Moreover, the distance between the two marked points is greater than 8.5mm, making it impossible for the surgeon to see the corneal markers under the eyepiece or observation screen during SMILE surgery, and also hindering precise manual compensation for eye rotation. Utility Model Content

[0008] (a) Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this invention provides a corneal three-point marker for SMILE surgery, solving the problems mentioned in the background section.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, this utility model provides the following technical solution: a corneal three-point marker for SMILE surgery, comprising a handle, a connecting rod, a semicircular plate with three marking blades, a circular positioning hole, and three bearing scales. The bottom end of the connecting rod is fixedly connected to the handle. Two marking blades are symmetrically distributed at both ends of the horizontal diameter of the semicircular plate, and the third marking blade is located at the lower end of the vertical diameter of the semicircular plate. The three marking blades protrude downwards into the same horizontal plane, and the spacing between each marking blade is the same. One end of the bearing scale on the right is connected to the right end of the horizontal diameter of the semicircular plate, and the other end is connected to the right end of the horizontal diameter of the circular positioning hole. One end of the bearing scale on the left is connected to the left end of the horizontal diameter of the semicircular plate, and the other end is connected to the left end of the horizontal diameter of the circular positioning hole. One end of the bearing scale in the middle is connected to the lower end of the vertical diameter of the semicircular plate, and the other end is connected to the lower end of the vertical diameter of the circular positioning hole. A pad is fixedly connected to the top surface of each of the three bearing scale ends, and the pad is fixedly connected to the bottom surface of the semicircular plate.

[0012] Preferably, each bearing scale is 3mm long and has five graduations with a spacing of 0.5mm.

[0013] Preferably, the three bearing scales and the circular positioning holes are located in the same plane and are lower than the lower surface of the semicircular plate.

[0014] Preferably, the thickness of the pad is 1 mm.

[0015] Preferably, the handle is provided with an anti-slip texture.

[0016] Preferably, the angle between the bottom end of the connecting rod and the handle is 30 degrees.

[0017] Preferably, the semicircular plate has a horizontal diameter of 7 mm and a difference of 2 mm between its inner and outer diameters.

[0018] Beneficial effects

[0019] This invention provides a corneal three-point marker for SMILE surgery, which has the following advantages:

[0020] Firstly, the design of this utility model is simple, which helps to reduce production costs and facilitates its widespread promotion.

[0021] Secondly, this utility model allows the operator to hold the device horizontally for three-point corneal marking, effectively avoiding obstruction of vision and operation by the eyelids, brow ridges, and cheekbones, and making the operation process smoother. It can also effectively improve the patient's cooperation and comfort.

[0022] Thirdly, this invention involves applying marking liquid to three marking blades, instructing the patient to sit in front of a slit lamp with their eyes looking straight ahead, adjusting the slit lamp light strip to a horizontal position, ensuring that the light strip passes through the corneal imprint point, and then simply pressing the handle gently to make the marking blade contact the cornea to complete the three-point marking. The entire marking process is convenient, quick, and highly accurate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the overall plan of the utility model;

[0025] Figure 3 This is a top view schematic diagram of the semi-circular plate of the utility model.

[0026] In the diagram: 1. Handle; 2. Connecting rod; 3. Semicircular plate; 301. Marking cutter head; 4. Circular positioning hole; 5. Bearing scale; 501. Pad block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0030] Example

[0031] like Figures 1-3 As shown, this utility model provides a corneal three-point marker for SMILE surgery, comprising a handle 1, a connecting rod 2, a semicircular plate 3 with three marking blades 301, a circular positioning hole 4, and three bearing scales 5. The bottom end of the connecting rod 2 is fixedly connected to the handle 1. Two marking blades 301 are symmetrically distributed at both ends of the horizontal diameter of the semicircular plate 3, and the third marking blade 301 is located at the lower end of the vertical diameter of the semicircular plate 3. The three marking blades 301 protrude downwards into the same horizontal plane, and the spacing between each marking blade 301 is the same, which helps to achieve accurate three-point marking. One end of the bearing scale 5 on the right side is connected to the right end of the horizontal diameter of the semicircular plate 3, and the other end... The bearing scale 5 on the left side is connected to the right end of the horizontal diameter of the semicircular plate 3 and the left end of the horizontal diameter of the circular positioning hole 4. The bearing scale 5 in the middle is connected to the lower end of the vertical diameter of the semicircular plate 3 and the lower end of the vertical diameter of the circular positioning hole 4. The top surfaces of the three bearing scales 5 are all fixedly connected to the pads 501, and the pads 501 are fixedly connected to the bottom surfaces of the semicircular plate 3. The marking points of the two marking cutters 301 on both sides are on the same horizontal line as the center of the circular positioning hole 4, and the marking point of the marking cutter 301 in the middle is on the same vertical line as the center of the circular positioning hole 4, thus improving the accuracy of the three-point marking.

[0032] Each bearing scale 5 is 3mm long and has five graduations with a spacing of 0.5mm.

[0033] The three bearing scales 5 and the circular positioning hole 4 are located in the same plane and are 1mm lower than the lower surface of the semicircular plate 3. The pad block 501 is 1mm thick. That is, there is a gap between the three bearing scales 5 and the circular positioning hole 4 and the lower surface of the semicircular plate 3, which can effectively prevent collisions or deformations during daily use or disinfection, and effectively protect the bearing scales 5 and the circular positioning hole 4.

[0034] The handle 1 has an anti-slip texture to enhance the stability of the grip.

[0035] The angle between the bottom of the connecting rod 2 and the handle 1 is 30 degrees, providing the operator with a better operating angle and comfort.

[0036] The diameter of the semicircular plate 3 in the horizontal direction is 7mm, and the difference between its inner and outer diameters is 2mm.

[0037] Working principle of this utility model:

[0038] First: Apply marking liquid to the three marking blades 301 provided on the lower surface of the semi-circular plate 3;

[0039] Second: Instruct the patient to sit in front of the slit lamp and look straight ahead. Adjust the slit lamp light strip to a horizontal position to ensure that the light strip passes through the corneal imprint point.

[0040] Third: The operator holds the handle 1 horizontally and brings the device of this utility model close to the eye;

[0041] Fourth: Use a slit-lamp microscope to adjust the position of the device of this invention so that the corneal imprint point passes through the circular positioning hole 4, and observe whether the two bearing scales 5 on the left and right are equidistant from the corneal imprint point;

[0042] Fifth: After adjustment, gently press handle 1 to make the marking tip 301 contact the cornea to complete the three-point marking.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corneal three-point marker for SMILE surgery, comprising a handle (1), a connecting rod (2), a semicircular plate (3) with three marking blades (301), a circular positioning hole (4), and three bearing scales (5), characterized in that: The bottom end of the connecting rod (2) is fixedly connected to the handle (1). Two marking blades (301) are symmetrically distributed at both ends of the horizontal diameter of the semicircular plate (3), and the third marking blade (301) is located at the lower end of the vertical diameter of the semicircular plate (3). The three marking blades (301) protrude downwards into the same horizontal plane, and the spacing between each marking blade (301) is the same. One end of the bearing scale (5) on the right side is connected to the right end of the horizontal diameter of the semicircular plate (3), and the other end is connected to the circular positioning. The right end of the horizontal diameter of the hole (4); one end of the bearing scale (5) on the left is connected to the left end of the horizontal diameter of the semicircular plate (3), and the other end is connected to the left end of the horizontal diameter of the circular positioning hole (4); one end of the bearing scale (5) in the middle is connected to the lower end of the vertical diameter of the semicircular plate (3), and the other end is connected to the lower end of the vertical diameter of the circular positioning hole (4); the top surfaces of the three bearing scales (5) are all fixedly connected with pads (501), and the pads (501) are fixedly connected to the bottom surface of the semicircular plate (3).

2. A corneal three-point marker for SMILE surgery according to claim 1, characterized in that: Each bearing scale (5) is 3mm long and has five graduations with a spacing of 0.5mm.

3. A corneal three-point marker for SMILE surgery according to claim 1, characterized in that: The three bearing scales (5) and the circular positioning hole (4) are located in the same plane and are lower than the lower surface of the semicircular plate (3).

4. A corneal three-point marker for SMILE surgery according to claim 1, characterized in that: The thickness of the pad (501) is 1 mm.

5. A corneal three-point marker for SMILE surgery according to claim 1, characterized in that: The handle (1) is provided with an anti-slip texture.

6. A corneal three-point marker for SMILE surgery according to claim 1, characterized in that: The angle between the bottom end of the connecting rod (2) and the handle (1) is 30 degrees.

7. A corneal three-point marker for SMILE surgery according to claim 1, characterized in that: The semicircular plate (3) has a horizontal diameter of 7 mm and a difference of 2 mm between its inner and outer diameters.

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