Corneal astigmatism positioning and marking device used in ophthalmic microsurgery
By designing a corneal astigmatism localization and marking device, and utilizing optical markers and angle adjusters, the problems of corneal damage and high cost in astigmatism localization have been solved, achieving high-precision and low-cost astigmatism localization, which is applicable to more medical institutions.
Patent Information
- Application Number
- CN202422812776.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-19
AI Technical Summary
In existing technologies, astigmatic localization and marking methods have the problems of corneal damage risk and high equipment cost. In particular, manual marking methods can damage the cornea, while OCT navigation methods are expensive and easily affected by corneal pannus, making them unrecognizable.
A corneal astigmatism localization and marking device was designed, including a positioning eyepiece collar, a variable diameter clip, an angle adjuster, and an optical marking assembly. The device achieves precise astigmatism localization through optical marking and angle adjustment, avoiding corneal damage and reducing equipment costs.
It achieves high-precision, low-cost astigmatism localization, avoiding corneal damage and expensive equipment, making it suitable for more primary healthcare units, and improving the accuracy of localization and the accessibility of the equipment.
Smart Images
Figure CN223586131U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to ophthalmic operation equipment technical field, specifically point to a corneal astigmatism positioning and marking device used in ophthalmic microsurgery. BACKGROUND
[0002] The operation mode of correcting vision in ophthalmic internal eye operation mainly is dioptric cataract operation and artificial lens implantation of phakic eye, and the two operation modes can correct myopia and astigmatism, but correcting astigmatism must use astigmatic artificial lens, and astigmatic artificial lens all has own astigmatism degree and astigmatism axis, in order to correct patient's own astigmatism, in addition to the astigmatism degree of astigmatic lens being consistent with patient's astigmatism degree, the target axis of astigmatic lens also needs to be consistent with patient's own astigmatism axis, which needs to rotate astigmatic artificial lens in operation to make the astigmatism axis after rotation consistent with patient's own astigmatism axis. This needs two operations: first, mark 0°-180° horizontal axis of patient's cornea before operation, and second, rotate astigmatic artificial lens to target astigmatism axis with 0°-180° horizontal axis as reference line in operation.
[0003] At present, there are two methods of astigmatism positioning and marking in the field of ophthalmology: the first is manual marking method, that is, marking 0°-180° horizontal axis on patient's cornea through slit lamp microscope before operation, then marking target axis of astigmatic lens with horizontal axis marking as reference line under microscope in operation, adjusting the lens to the position consistent with target axis marking point after implantation; the second method is intraoperative OCT navigation method, and the commonly used method is that patient receives IOLMASTER700 examination before operation, and the machine automatically identifies and records the shape, diameter and horizontal axis of patient's cornea, then transmits the recorded data to operation microscope, and projects horizontal marking line and target axis line into microscope eyepiece in operation, and the surgeon adjusts astigmatic artificial lens to target axis according to marking line.
[0004] Both of the two currently commonly used astigmatism positioning marking methods have defects and deficiencies in clinical application. For the first method, the target axial marking on the cornea of the patient in the operation is generally achieved by shallowly scratching the surface of the cornea with a scalpel, which will cause additional damage to the corneal tissue and may increase the risk of infection. In addition, the positioning marking ring is generally used to mark, and the positioning marking ring is generally with a minimum interval of 5°. The operator needs to judge the interval less than 5° with naked eyes in the operation, which reduces the positioning accuracy. For the second method, the whole process is non-invasive, and the minimum interval is 1°, which increases the positioning accuracy. However, this method may fail to identify due to the presence of pterygium on the cornea of the patient, so that the positioning cannot be performed in the operation. In addition, this method needs to purchase medical equipment including IOLMASTER700 and intraoperative navigation microscope, and the prices of these equipment are relatively high. Therefore, only a few top medical institutions in China use this method, and more primary medical units cannot carry out this method due to the increase of operating costs. Content of the utility model
[0005] The technical problem to be solved by the utility model is that the minimally invasive surgical positioning causes additional damage, and the machine positioning is high in cost and prone to fail to identify due to the presence of pterygium on the cornea.
[0006] To solve the above technical problem, the technical scheme adopted by the utility model is as follows: the utility model provides a corneal astigmatism positioning and marking device used in ophthalmic microsurgery, which comprises a positioning eyepiece sleeve ring, a variable-diameter buckle extending from one side of the positioning eyepiece sleeve ring, two groups of connecting rods symmetrically arranged on the side wall of the positioning eyepiece sleeve ring, an angle adjusting instrument fixedly installed at the other end of the connecting rod, an angle adjusting sliding groove penetrating through the angle adjusting instrument, an angle adjusting marking assembly further arranged on the side wall of the positioning eyepiece sleeve ring and sliding in the angle adjusting sliding groove, and part of the structure of the angle adjusting marking assembly being rotationally connected with the bottom of the positioning eyepiece sleeve ring, and a variable-diameter installation sliding groove being annularly arranged on the inner wall of the variable-diameter buckle.
[0007] As an improvement, the angle adjusting marking assembly comprises an angle adjusting motor, a limiting piece, an angle adjusting gear, an angle adjusting driven wheel, a connecting rod and a blue marking linear lamp, the angle adjusting motor is fixed on the positioning eyepiece sleeve ring, the limiting piece is arranged on the output shaft of the angle adjusting motor, the angle adjusting gear is connected with the output shaft of the angle adjusting motor and is limited by the limiting piece, the angle adjusting driven wheel is rotationally arranged on the bottom wall of the positioning eyepiece sleeve ring and meshes with the angle adjusting gear, the connecting rod extends from the bottom wall of the angle adjusting driven wheel, and the blue marking linear lamp is embedded on the angle adjusting driven wheel and is slidingly connected with the angle adjusting sliding groove.
[0008] As improved, a green mark linear lamp is embedded through the connecting rod, and the blue mark linear lamp is symmetrically arranged with the green mark linear lamp.
[0009] As improved, the angle adjusting instrument is arranged in a semicircle, and the angle adjusting sliding slot is arranged in a semicircular hole.
[0010] As improved, the diameter of the variable-diameter buckle gradually increases from the positioning eyepiece sleeve ring to the variable-diameter buckle.
[0011] As improved, the angle adjusting driven wheel is arranged in a circular ring gear.
[0012] The corneal astigmatism positioning and marking device has the advantages that the device is simple in structure, high in accuracy, low in cost and convenient to popularize, compared with the traditional slit lamp marking method, the device does not need to mark on the cornea with a scalpel, avoids damage to the cornea, reduces the risk of infection caused thereby, and improves the accuracy of the marking by measuring the rotation degree with 1° as the minimum unit. Compared with the intraoperative OCT navigation system, the device is obviously lower in cost, is more convenient to popularize and apply, and more primary medical units have the opportunity to use the positioning and marking system. In addition, the device does not need to identify the patient's eye before the operation, and avoids the problem of being unable to identify due to pannus and nebula of the cornea. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 The device is a corneal astigmatism positioning and marking device used in ophthalmic microsurgery.
[0014] Figure 2 The device is a corneal astigmatism positioning and marking device used in ophthalmic microsurgery.
[0015] Figure 3 The device is a corneal astigmatism positioning and marking device used in ophthalmic microsurgery.
[0016] Figure 4 The device is a corneal astigmatism positioning and marking device used in ophthalmic microsurgery.
[0017] 1, positioning eyepiece sleeve ring; 2, variable-diameter buckle; 3, connecting rod; 4, angle adjusting instrument; 5, angle adjusting sliding slot; 6, angle adjusting marking assembly; 7, variable-diameter mounting sliding slot; 8, angle adjusting motor; 9, limiting piece; 10, angle adjusting gear; 11, angle adjusting driven wheel; 12, connecting rod; 13, blue mark linear lamp; 14, green mark linear lamp. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without any creative work fall within the protection scope of the utility model.
[0019] As shown in Figures 1-4 The utility model provides a corneal astigmatism positioning and marking device used in ophthalmic microsurgery, including positioning ocular lens sleeve ring 1, the one side of positioning ocular lens sleeve ring 1 extends the variable diameter buckle 2 of variable diameter, the diameter of variable diameter buckle 2 gradually increases from positioning ocular lens sleeve ring 1 towards variable diameter buckle 2, the lateral wall of positioning ocular lens sleeve ring 1 is equipped with two groups of connecting rods 3 symmetrically, and a green marking linear lamp 14 is embedded in one group of connecting rods 3, an angle adjusting instrument 4 is fixedly installed at the other end of connecting rod 3, an angle adjusting sliding slot 5 is penetrated in angle adjusting instrument 4, angle adjusting instrument 4 is arranged in semicircle, angle adjusting sliding slot 5 is arranged in semicircular hole, angle adjusting marking assembly 6 is further arranged on the lateral wall of positioning ocular lens sleeve ring 1, and angle adjusting marking assembly 6 slides in angle adjusting sliding slot 5, part of the structure of angle adjusting marking assembly 6 is rotatably connected with the bottom of positioning ocular lens sleeve ring 1, and variable diameter mounting sliding slot 7 is annularly arranged on the inner wall of variable diameter buckle 2.
[0020] As shown in Figure 2 、 3 , 4, angle adjusting marking assembly 6 includes angle adjusting motor 8, limit piece 9, angle adjusting gear 10, angle adjusting driven wheel 11, connecting rod 12 and blue marking linear lamp 13, angle adjusting motor 8 is fixed on positioning ocular lens sleeve ring 1, limit piece 9 is arranged on the output shaft of angle adjusting motor 8, angle adjusting gear 10 is connected with the output shaft of angle adjusting motor 8 and is limited by limit piece 9, angle adjusting driven wheel 11 is rotatably arranged on the bottom wall of positioning ocular lens sleeve ring 1 and is engaged with angle adjusting gear 10, angle adjusting driven wheel 11 is arranged in the form of circular ring gear, connecting rod 12 extends from the bottom wall of angle adjusting driven wheel 11, blue marking linear lamp 13 is embedded on angle adjusting driven wheel 11 and is slidably connected with angle adjusting sliding slot 5, and blue marking linear lamp 13 is symmetrically arranged with green marking linear lamp 14.
[0021] In specific use, the variable-diameter mounting sliding groove 7 arranged in a ring in the variable-diameter buckle 2 is used to mount the variable-diameter buckle 2 on the microscope eyepiece in the operating room, the variable-diameter variable-diameter buckle 2 arranged in a ring with the variable-diameter variable-diameter buckle 2 can be mounted on the eyepiece of different sizes, and then the user starts the green mark linear lamp 14, the green mark linear lamp 14 emits green light, realizes the marking of the target axis position; start the blue mark linear lamp 13, the blue mark linear lamp 13 emits blue light, after starting the angle adjusting motor 8, the angle adjusting motor 8 drives the angle adjusting gear 10 to rotate, so as to mesh with the angle adjusting driven wheel 11 rotating around the circle, finally drive the connecting rod 12 and the blue mark linear lamp 13 rotate around the circle with the angle adjusting driven wheel 11, and slide on the angle adjusting sliding groove 5, change the angle, complete the purpose of 0-180° axis adjustment of blue light, achieve the effect of not needing to perform minimally invasive on the patient's eye before the operation to complete the positioning and marking purpose, and also avoid the problem of being unable to identify caused by corneal pannus, corneal nebula and the like.
[0022] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
[0023] The above describes the present application and its embodiments, which is not restrictive, and the shown in the drawings is only one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if the ordinary skilled in the art is inspired, without departing from the creative purpose of the present application, without creative design, similar structure and embodiments to the technical scheme, which should belong to the protection scope of the present application.
Claims
1. A corneal astigmatism locating and marking device for use in ophthalmic microsurgery, characterized in that, The utility model provides a positioning eyepiece collar (1) is extended with the taper buckle (2) of taper of one side of positioning eyepiece collar (1), and two groups of connecting rods (3) are symmetrically arranged on the side wall of positioning eyepiece collar (1), the other end of connecting rod (3) is fixedly installed with angle adjusting instrument (4), and angle adjusting instrument (4) is penetrated with angle adjusting sliding slot (5), angle adjusting mark assembly (6) is further arranged on the side wall of positioning eyepiece collar (1), and angle adjusting mark assembly (6) slides in angle adjusting sliding slot (5), and part structure of angle adjusting mark assembly (6) is rotatably connected with the bottom of positioning eyepiece collar (1), and the inner wall of taper buckle (2) is annularly provided with taper installation sliding slot (7).
2. An ophthalmic microsurgical corneal astigmatic alignment and marking device according to claim 1, wherein: The angle adjusting mark assembly (6) includes an angle adjusting motor (8), a limiting piece (9), an angle adjusting gear (10), an angle adjusting driven wheel (11), a connecting rod (12), and a blue marker linear lamp (13). The angle adjusting motor (8) is fixed on the positioning eyepiece collar (1). The limiting piece (9) is arranged on the output shaft of the angle adjusting motor (8). The angle adjusting gear (10) is connected with the output shaft of the angle adjusting motor (8) and is limited by the limiting piece (9). The angle adjusting driven wheel (11) is rotatably arranged on the bottom wall of the positioning eyepiece collar (1) and meshes with the angle adjusting gear (10). The connecting rod (12) extends from the bottom wall of the angle adjusting driven wheel (11). The blue marker linear lamp (13) is embedded on the angle adjusting driven wheel (11) and is slidably connected with the angle adjusting sliding slot (5).
3. An ophthalmic microsurgical corneal astigmatic alignment and marking device according to claim 2, wherein: A group of the connecting rods (3) are penetrated and embedded with green marker linear lamps (14). The blue marker linear lamp (13) and the green marker linear lamp (14) are symmetrically arranged.
4. An ophthalmic microsurgical corneal astigmatic alignment and marking device according to claim 3, wherein: The angle adjusting instrument (4) is semicircular. The angle adjusting sliding slot (5) is a semicircular hole.
5. An ophthalmic microsurgical corneal astigmatic alignment and marking device according to claim 4, wherein: The diameter of the taper buckle (2) gradually increases from the positioning eyepiece collar (1) to the taper buckle (2).
6. An ophthalmic microsurgical corneal astigmatic alignment and marking device according to claim 5, wherein: The angle adjusting driven wheel (11) is a circular ring gear.