Corneal astigmatism positioning marking device

Abstract

The present invention relates to a corneal astigmatism positioning marking device, belonging to the technical field of medical devices. The positioning disk with an eyelid opening function is used to open the upper and lower eyelids and fully expose the corneal tissue, making manual operation more convenient when locating astigmatism. The upper layer is a 360-degree positioning circumference, and the surface is evenly provided with angle scale lines and values. The minimum indication of the angle scale line is 1 degree, and the angle value is set every 5 degrees. A support beam is fixedly arranged between the inner walls of the positioning disk and is used to support a marker and a pointer. The pointer is rotatably arranged on the support beam and is used to point to the angle scale line of the positioning disk. The marker is slidably arranged on the support beam and is used to engrave and color the direction indicated by the pointer. The engraving depth is 40-50μm. The present invention adopts an integrated device of axial precise positioning and marking and scratching, making positioning more accurate and operation more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a corneal astigmatism positioning marking device. Background Art

[0002] Before performing astigmatism intraocular lens surgery, the doctor needs to locate the astigmatism of the patient's cornea and mark it. Because the change of body position from upright to supine will cause the human eye to rotate, the astigmatism location and marking must be completed by the doctor under the slit lamp before the operation begins, with the patient in a sitting position.

[0003] The current method is to first mark the axis of astigmatism at the level of the corneal limbus with the slit light of a slit lamp before surgery. Then, a sterile marking pen is used to mark the axis. Then, the tip of a 1ml needle is used to scratch the corneal epithelium to a certain depth (approximately 40-50μm). During surgery, with the patient in the supine position, the surgeon can still determine the axis of astigmatism under a microscope using the marked point and align the marked axis with the astigmatism mark on the intraocular lens.

[0004] Prior art application number 202021009126.2, application name "A multifunctional locator for ophthalmic surgery" provides a locator with a graduated ring. This solution can mark the corneal apex and corneal limbus to form the axis of corneal astigmatism, but still has the following problems:

[0005] 1. It is not possible to mark the astigmatism axis with color and scratches at one time, and the operation needs to be performed twice;

[0006] 2. The depth of the scratches cannot be controlled, which may result in unclear markings or safety issues;

[0007] 3. During the positioning process, because each patient's ability to cooperate is different, some patients may have difficulty opening their eyes, resulting in poor cooperation, which increases the difficulty of positioning and prolongs the positioning time.

[0008] In view of the above technical problems, it is necessary to improve the existing locator. After the improvement, the upper and lower eyelids can be opened to fully expose the cornea. Its transparent material can fully observe the corneal condition during astigmatism positioning. It can also dye and scratch the positioning part at the same time, and can also accurately control the depth of the scratch. It is of great significance to improve operational efficiency, surgical quality and safety. Summary of the Invention

[0009] In view of this, the purpose of the present invention is to propose a corneal astigmatism positioning marking device, which can hold open the upper and lower eyelids to fully expose the cornea, its transparent material can fully observe the corneal condition during astigmatism positioning, and can also complete dyeing and scratching of the positioning part at the same time, and can also accurately control the scratch depth, thereby greatly improving the operating efficiency and the accuracy of astigmatism positioning, so as to solve the problem of low operating efficiency caused by the existing technology of color and scratch marking in batches. Furthermore, it solves the problem that the existing technology has no accurate control of the scratch depth, there are safety hazards or unclear markings.

[0010] The present invention is achieved through the following technical solutions:

[0011] A corneal astigmatism positioning marking device, comprising

[0012] The positioning disc has an eyelid opening function, which is used to open the upper and lower eyelids and fully expose the corneal tissue to facilitate surgical operations. The top circumferential surface is evenly provided with angle scale lines and angle values. The minimum indication value of the angle scale line is 1 degree, and the angle value is set every 5 degrees.

[0013] The support beam is fixed between the inner walls of the positioning plate and is used to support the marker and pointer.

[0014] The pointer is rotatably mounted on the support beam and is used to point to the angle scale line of the positioning disk.

[0015] The marker is slidably arranged on the support beam and is used to engrave and color the direction indicated by the pointer, with an engraving depth of 40-50μm.

[0016] Furthermore, the marker includes a positioning shaft, a marking needle and a pressing block. The positioning shaft is slidably set on the support beam, the marking needle is slidably set in the positioning shaft, the axis of the marking needle intersects vertically with the center line of the pointer, and the pressing block is slidably set above the marking needle to drive the marking needle to perform engraving and coloring operations.

[0017] Furthermore, the marking needle includes a shell and a marking head, a colorant cavity is provided in the shell, and the marking head includes a coloring tip and an engraving needle, the coloring tip is connected to the colorant cavity to color the marking area, and the engraving needle is provided inside the coloring tip to engrave on the coloring area to display the astigmatism axis position.

[0018] Furthermore, a color material box is provided on the top of the shell, and the color material box is made of hard material. The pressing block is provided above the color material box for marking drive.

[0019] Furthermore, a needle body through hole and a color box accommodating cavity are provided in the positioning shaft, and a pressing block sliding groove is provided above the color box accommodating cavity. The diameter of the pressing block sliding groove is larger than the diameter of the color box accommodating cavity, and the diameter of the color box accommodating cavity is larger than the diameter of the needle body through hole.

[0020] Furthermore, a limit block is arranged between the shell and the marking head, a limit block through hole is arranged below the needle body through hole, a limit block stopper is arranged below the limit block through hole, and a colored tip through hole is arranged below the limit block stopper. When the limit block is against the upper end face of the limit block stopper, the length of the engraving needle extending out of the positioning axis is 40-50μm.

[0021] Furthermore, the color material box accommodating cavity is provided with an elastic reset member below the color material box, and the elastic reset member is sleeved on the shell.

[0022] Furthermore, the positioning plate, pointer and support beam are all made of transparent materials.

[0023] Furthermore, a positioning sleeve is fixedly provided on the support beam and is slidably matched with the positioning shaft.

[0024] Furthermore, the outer edge of the positioning plate is provided with an arc-shaped retaining groove for retaining the upper and lower eyelids.

[0025] The beneficial effects of the present invention are:

[0026] The marker of the present invention can open the upper and lower eyelids to fully expose the cornea, its transparent material can fully observe the corneal condition when locating astigmatism, and can perform engraving and coloring operations at one time, thereby simplifying the operating procedure and improving operating efficiency. At the same time, the engraving depth of the marker is 40-50μm, which makes the marking depth controllable, avoiding the problem of insufficient marking depth leading to clear marking, and also avoiding excessive marking depth that may cause safety problems; in addition, the angle value with an accuracy of 1 degree is obtained through the pointer, making the orientation of the astigmatism axis more accurate.

[0027] In summary, the present invention adopts an integrated device for axial precise positioning and marking and scratching, which makes positioning more accurate and operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0029] Figure 2 It is the front view of the present invention;

[0030] Figure 3 It is a left side view of the present invention;

[0031] Figure 4 A top view of the present invention;

[0032] Figure 5 for Figure 4 Cross-sectional view along AA direction;

[0033] Figure 6 for Figure 4 A local enlarged view at point A;

[0034] Figure 7 is a schematic diagram of a marker;

[0035] Figure 8 is a schematic diagram of the marking needle;

[0036] Figure 9 A positioning plate provided with a baffle;

[0037] Figure 10 for Figure 9 Left view of .

[0038] Description of reference numerals:

[0039] 1- Positioning plate; 2- Angle scale line; 3- Support beam; 4- Pointer; 5- Marker; 6- Positioning shaft; 7- Marking needle; 8- Pressing block; 9- Housing; 10- Marking head; 11- Coloring tip; 12- Engraving needle; 13- Color material box; 14- Limit block; 15- Limit block stopper; 16- Elastic reset member; 17- Positioning sleeve; 18- Arc retaining groove; 19- Rotating shaft; 20- Observation hole; 21- Operating handle; 22- Tightening nut. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0043] In the above description of the present invention, it should be noted that the terms "one side," "the other side," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0044] Furthermore, the term "identical" and similar terms do not necessarily require that the components be absolutely identical; slight variations are permitted. The term "perpendicular" simply refers to the positional relationship between components being more perpendicular than "parallel," not that the structure must be perfectly vertical; rather, it can be slightly tilted.

[0045] like Figure 1-8 As shown, the present invention provides a corneal astigmatism positioning marking device, comprising:

[0046] The positioning disc 1 has an eyelid opening function, which is used to open the upper and lower eyelids and fully expose the corneal tissue, making it more convenient to operate manually when locating astigmatism. The top circumferential surface is evenly provided with angle scale lines 2 and angle values. The minimum indication of the angle scale line is 1 degree, and the angle value is set every 5 degrees, so that the angle accuracy of 1 degree can be obtained, making the axis position more accurate.

[0047] The support beam 3 is fixed between the inner walls of the positioning plate and is used to support the marker and the pointer.

[0048] Pointer 4 is rotatably mounted on the support beam and is used to point to the angle scale line of the positioning plate.

[0049] The marker 5 is slidably arranged on the support beam and is used to engrave and color the direction indicated by the pointer, with an engraving depth of 40-50 μm.

[0050] Furthermore, the marker of this embodiment includes a positioning shaft 6, a marking needle 7 and a pressing block 8. The positioning shaft is slidably set on the support beam, that is, the positioning shaft can move relative to the support beam, so as to be adjusted in the vertical direction to adapt to the changes in height of different corneas. At the same time, the marking needle is slidably set in the positioning shaft to perform engraving operations. The central axis of the marking needle intersects the center line of the pointer vertically, that is, the projection of the marking needle falls on the center line of the pointer, and the angular orientation indicated by the pointer is located on its center line, so that the marking point is located in the angular direction pointed by the pointer, ensuring that the marking point coincides with the angular direction. The pressing block is slidably set above the marking needle to drive the marking needle to perform engraving and coloring operations.

[0051] Furthermore, the marking needle of this embodiment includes a shell 9 and a marking head 10, a colorant cavity is provided in the shell, and the marking head includes a coloring tip 11 and an engraving needle 12. The coloring tip is connected to the colorant cavity to color the marking area, and the engraving needle is provided inside the coloring tip to engrave in the coloring area to display the astigmatism axis position.

[0052] Furthermore, a colorant box 13 is provided on the top of the shell, which is connected to the colorant chamber to replenish the colorant chamber. The colorant box is made of hard materials such as iron or hard plastic and has a certain pressure-bearing capacity. Therefore, when the pressing block is set above the colorant box, it can drive the marking needle to perform the marking operation.

[0053] Furthermore, the positioning shaft is provided with a needle hole and a color cartridge housing. A pressing block sliding groove is located above the color cartridge housing. The diameter of the pressing block sliding groove is larger than that of the color cartridge housing, which in turn is larger than the diameter of the needle hole. When the pressing block is used for marking, the pressing block can only move within the pressing block sliding groove, and the color cartridge can only move within the color cartridge housing, thus limiting its range of movement.

[0054] Furthermore, a limit block 14 is provided between the housing and the marking head, a limit block hole is provided below the needle body hole, a limit block stopper 15 is provided below the limit block hole, and a coloring tip hole is provided below the limit block stopper. When the limit block abuts against the upper end surface of the limit block stopper, the length of the marking needle extending from the positioning axis is 40-50μm. The use of the limit block and the limit block stopper ensures the depth of the marking needle's mark.

[0055] Further, the color material box accommodating chamber is provided with an elastic reset member 16 below the color material box, and the elastic reset member is sleeved on the shell. When a marking operation is completed, under the effect of the elastic reset member, the pressing block and the marking needle can be returned to their original positions.

[0056] When in use, the positioning disc is first fixed to the outer edge of the affected eye's cornea, with the center of the disc roughly aligned with the center of the cornea. The direction of the astigmatism axis is then indicated using slit light. The pointer is then rotated to align with the slit light orientation, and the positioning axis is lowered onto the cornea. At this point, the positioning axis and its bottom surface contact the cornea. The push-button is pressed to its limit, where the stopper abuts the upper end of the stopper. At this point, the marking needle extends 40-50 μm beyond the positioning axis, completing a first mark 40-50 μm deep. Once completed, the marker is raised, the pointer is rotated to a scale direction 180 degrees from the original orientation, and the push-button is pressed again, forming a second mark 40-50 μm deep. The two marks are aligned and in the same direction as the astigmatism axis. Due to its accurate depth and colored display, the markings are very clear. Furthermore, its scale accuracy is 1 degree, making it highly accurate.

[0057] As an improvement to this embodiment, the positioning plate and support beam are made of transparent materials such as glass or acrylic. This facilitates observation of changes in the cornea during the marking operation and ensures the accuracy of the marking results. The pointer is made of a colored material, making it easy to align with the scale and quickly read the value.

[0058] As an improvement to this embodiment, a positioning sleeve 17 is fixedly mounted on the support beam and slidably engages with the positioning shaft. The positioning shaft is slidably mounted within the positioning sleeve, and the two can move relative to each other to accommodate changes in height, such as different corneal heights for different people and marking from one side to the other.

[0059] As an improvement of this embodiment, the outer edge of the positioning plate is provided with an arc-shaped retaining groove 18 for retaining the upper and lower eyelids. The upper and lower eyelids can be stored in the arc-shaped retaining groove so that the line of sight is not blocked and the operation is convenient and accurate.

[0060] As an improvement to this embodiment, a rotating shaft 19 is provided on the supporting beam, a rotating shaft hole is provided at the end of the pointer, and a clamping nut 22 is provided at the front end of the rotating shaft, so as to facilitate fixing of the pointer.

[0061] As an improvement to this embodiment, an observation hole 20 is provided at the center of the rotating shaft. The center of the observation hole is located at the center of the positioning plate, so that the center position of the cornea can be observed through the observation hole.

[0062] As an improvement to this embodiment, an operating handle 21 is provided on the outer edge of the positioning plate to make operation more convenient.

[0063] As an improvement to this embodiment, the bottom of the positioning shaft is spherical, and the spherical surface contacts the corneal surface without irritation, which provides good comfort.

[0064] As an improvement to this embodiment, the marking needle of this embodiment has a needle tip with a width of 0.2-0.5 mm, so that a mark with a width of 0.2-0.5 mm can be engraved on the cornea, which is easier to observe.

[0065] As an improvement of this embodiment, eyelid shields are symmetrically arranged on the positioning plate of this embodiment, and the upper and lower eyelids can be directly shielded by the eyelid shields, further improving the shielding effect. Figure 9-10 shown.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A corneal astigmatism positioning marking device, characterized in that: include The positioning disc has an eyelid opening function, which is used to open the upper and lower eyelids and fully expose the corneal tissue to facilitate surgical operations. The top circumferential surface is evenly provided with angle scale lines and angle values. The minimum indication value of the angle scale line is 1 degree, and the angle value is set every 5 degrees. The support beam is fixed between the inner walls of the positioning plate and is used to support the marker and pointer. The pointer is rotatably mounted on the support beam to point to the angle scale line of the positioning disk. The marker is slidably arranged on the support beam and is used to engrave and color the direction indicated by the pointer. The marker includes a positioning shaft, a marking needle and a pressing block. The positioning shaft is slidably arranged on the support beam. The marking needle is slidably arranged in the positioning shaft. The axis of the marking needle intersects perpendicularly with the center line of the pointer. The pressing block is slidably arranged above the marking needle and is used to drive the marking needle to perform engraving and coloring operations. The marking needle includes a shell and a marking head. A color material cavity is arranged in the shell. The marking head includes a coloring tip and an engraving needle. The coloring tip is connected to the color material cavity to color the marked area. The engraving needle is arranged inside the coloring tip. The engraving needle has a needle tip with a width of 0.2-0.5mm, which is used to engrave in the coloring area to display the astigmatism axis position. The top of the shell is provided with a color material box, which is made of hard material. The pressing block is provided above the color material box to drive the marking. A needle body through hole and a color cartridge accommodating cavity are provided in the positioning shaft, a pressing block sliding groove is provided above the color cartridge accommodating cavity, the diameter of the pressing block sliding groove is larger than the diameter of the color cartridge accommodating cavity, and the diameter of the color cartridge accommodating cavity is larger than the diameter of the needle body through hole, A limit block is arranged between the shell and the marking head, a limit block through hole is arranged below the needle body through hole, a limit block stopper is arranged below the limit block through hole, a colored tip through hole is arranged below the limit block stopper, and when the limit block is against the upper end face of the limit block stopper, the length of the engraving needle extending out of the positioning axis is 40-50μm.

2. The corneal astigmatism positioning marking device according to claim 1, characterized in that: The color material box accommodating cavity is located below the color material box and is provided with an elastic reset member, and the elastic reset member is sleeved on the shell.

3. A corneal astigmatism positioning marking device according to any one of claims 1-2, characterized in that: The positioning plate and the supporting beam are both made of transparent materials, and the pointer is made of colored materials.

4. A corneal astigmatism positioning marking device according to any one of claims 1-2, characterized in that: A positioning sleeve which is in sliding cooperation with the positioning shaft is fixedly provided on the supporting beam.

5. A corneal astigmatism positioning marking device according to any one of claims 1-2, characterized in that: The outer edge of the positioning plate is provided with an arc-shaped retaining groove for retaining the upper and lower eyelids.

Images