CN218552309U - Cornea astigmatism axial marker - Google Patents
Cornea astigmatism axial marker Download PDFInfo
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- CN218552309U CN218552309U CN202221935753.8U CN202221935753U CN218552309U CN 218552309 U CN218552309 U CN 218552309U CN 202221935753 U CN202221935753 U CN 202221935753U CN 218552309 U CN218552309 U CN 218552309U
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Abstract
The utility model discloses a cornea astigmatism axial marker, which comprises an operating handle; the marking support is in a semicircular ring shape, and two cantilevers are arranged at two ends of the marking support in the diameter direction; the two ends of the rotary joint are respectively connected to one end of the operating handle and the middle part of the marking bracket; and two marking blades which are arranged at the bottoms of the two cantilevers. Adopt the utility model discloses an axial marker, astigmatic axle position mark is accomplished to the seat under the slit lamp microscope, perhaps astigmatic axle position mark is accomplished to the supine position under the operating microscope, it can realize under the condition of different exophthalmos degree, different position angles to rotate rotary joint, the mark sword that utilizes mark support both ends carries out quick mark to the both ends of cornea diameter simultaneously, to needs accurate positioning cornea astigmatism axial cataract, operations such as cornea refraction have easy operation, with low costs and the high advantage of accuracy.
Description
Technical Field
The utility model relates to the technical field of ophthalmic surgery, in particular to a corneal astigmatism axial marker.
Background
Astigmatism is one type of ametropia. Since the corneal surface is not a perfect regular perfect circle, during development or in the process of acquired growth, if the corneal surface is made up of a relief like the earth's surface due to various factors, the refractive power of the cornea is not the same at each radial line, and the light cannot be focused to a point on the retina, which is called corneal astigmatism.
Corneal astigmatism occurs at a very high rate, beyond which a certain degree of astigmatism affects visual clarity, and studies have shown that nearly half of the normal population has corneal astigmatism exceeding 1D (100 degrees) and needs to be corrected by prescription or surgery.
The astigmatism axis marking is an essential step for performing the corneal astigmatism correction surgery, including cataract extraction combined with astigmatism-correcting intraocular lens implantation surgery, astigmatism-correcting ICL implantation surgery, refractive corneal surgery (such as corneal astigmatism release surgery), and the like. The accuracy of the astigmatic axial markers directly affects the corrective effect of these procedures.
The currently common corneal astigmatism axial marking method comprises the following steps: (1) The patient takes the sitting position, the light band of a slit lamp microscope is vertically projected on the cornea for positioning, then a needle or a sharp knife is used for marking on the cornea, and the marking pen is further used for staining. This method requires good fitting of the patient and good skill of the operator because the axial marks at both ends of the corneal diameter are marked separately, which has the disadvantage of difficult operation because the axial marks are easily deviated due to poor fitting of the patient, breathing, etc. And (2) using an optical navigation system of the surgical microscope. At present, the navigation systems are expensive, the price is hundreds of thousands of RMB or even millions of RMB, the requirement on an operation microscope is high, accurate measurement before an operation is needed, and the navigation systems have poor accuracy for serious irregular astigmatism or corneal abnormality, so the navigation systems have the defects of high cost and poor accuracy.
In view of this, the present inventors have made extensive conception on the defects and inconveniences caused by the perfection of the corneal astigmatism axis marking process, and have actively studied, improved and tried to develop and design the present invention.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cornea astigmatism axial marker for cornea astigmatism axle position mark easy operation, with low costs and accuracy height.
In order to achieve the above purpose, the solution of the utility model is:
an axial marker of corneal astigmatism, the axial marker comprising
An operating handle;
the marking bracket is in a semicircular ring shape, and two cantilevers are arranged at two ends of the marking bracket in the diameter direction;
the two ends of the rotary joint are respectively connected to one end of the operating handle and the middle part of the marking bracket;
and two marking blades which are arranged at the bottoms of the two cantilevers.
The movable range of the rotary joint is 10-340 degrees.
The rotary joint is a rotary self-locking joint disclosed in patent publication No. CN 208281347U.
The marking blade is detachably arranged at the bottom of the cantilever.
The radian of the blade of the marking blade is consistent with the radian of the cornea of the eyeball of a human body.
The cross section of the marking blade is triangular.
The middle part of the operating handle is provided with anti-skid grains.
The operating handle and the rotary joint are made of plastic or metal materials.
The marking bracket and the marking blade are made of metal materials.
The diameter of the semicircular annular marking support is 9-14mm, the length of the marking blade is 1-3mm, and the length of the operating handle is 5-15cm.
After the scheme of the adoption, adopt the utility model discloses an axial marker accomplishes astigmatic axle position mark at the seat under the slit lamp microscope, perhaps the astigmatic axle position mark is accomplished to the supine position under the operation microscope, rotate rotary joint and can realize under the condition of different exophthalmos degree, different position angles, utilize the mark sword at mark support both ends to carry out quick mark to the both ends of cornea diameter simultaneously, to needs operations such as accurate location cornea astigmatism axial cataract, cornea refraction have easy operation, with low costs and the high advantage of accuracy.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the specific embodiments below.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in FIG. 1, a preferred embodiment of the corneal astigmatism axial marker of the present invention comprises an operation handle 1; the marking support 2 is in a semicircular ring shape, and two cantilevers 21 are arranged at two ends of the marking support 2 in the diameter direction; the two ends of the rotary joint 3 are respectively connected to one end of the operating handle 1 and the middle part of the marking bracket 2; and two marking blades 4, the two marking blades 4 being mounted on the bottoms of the two cantilevers 21.
When the device is used under a slit-lamp microscope, a patient takes a sitting position, fixes a head position and enables eyes to look ahead. After the surface anesthetic is dropped, the upper and lower eyelids are opened with an eye speculum or the operator's fingers, and the cornea is exposed. The operator adjusts the rotary joint 3 of the axial marker to suit the degree of eye prominence of the eye to be marked. The two marking edges 4 are painted with a marking pigment (such as methylene blue or other skin marker pigment) and the slit lamp light band is adjusted to be the longest and the thinnest so that the light band is positioned on the corneal axis to be marked and passes through the center of the cornea of the eye to be marked. When the light strip coincides with the leading edges of the two marking edges 4, a certain force is applied to the axial marker to press the same against the cornea for marking.
When used under an operating microscope, the patient takes the supine position and the eyes are looking straight up. After dropping the surface anesthetic, the upper and lower eyelids are opened by an eyelid retractor to expose the cornea. The operator adjusts the rotary joint 3 of the axial marker to the degree of eye prominence of the eye to be marked. The marking pigment (such as methylene blue or other skin marker pigment) is applied to the two marking edges 4, and a certain force is applied to the axial marker to press the cornea to mark by passing through the cornea center of the eye to be marked in the axial direction of the cornea to be marked.
The utility model discloses an emphasis lies in, adopts the utility model discloses an axial marker accomplishes astigmatic axle position mark at the seat under the slit lamp microscope, perhaps the astigmatic axle position mark is accomplished to the supine position under the operation microscope, rotary joint 3 can realize under the condition of different exophthalmos degree, different position angles, the mark sword 4 that utilizes 2 both ends of mark support carries out quick mark to the both ends of cornea diameter simultaneously, to needs accurate positioning cornea astigmatic axial cataract, operations such as cornea refraction have easy operation, with low costs and the high advantage of accuracy.
The movable range of the rotary joint 3 is 10 to 340 degrees. Therefore, the eyeball with different convex eye degrees is suitable.
The rotary joint 3 is a rotary self-locking joint disclosed in patent publication No. CN 208281347U.
The marking blade 4 is detachably attached to the bottom of the cantilever 21. In this way, when the cutting edge portion of the marking blade 4 is not sufficiently slender due to wear, the marking blade 4 can be removed and replaced with a new one.
The radian of the edge of the marking blade 4 is consistent with the radian of the cornea of the eyeball of a human body.
The marking edge 4 has a triangular cross section. The marking blade 4 with the triangular cross section is wide at the top and thin at the bottom, which is beneficial to the installation of the marking blade 4 and has the advantages of firm and stable structure.
The middle part of the operating handle 1 is provided with anti-skid grains 11. Therefore, the user can hold the axial marker more firmly and stably.
The operating handle 1 and the rotary joint 3 are made of plastic or metal. When made of plastic, it has the advantage of being lightweight.
The marking holder 2 and the marking blade 4 are made of metal. It has the advantages of firm structure and difficult deformation.
The diameter of the semicircular marking bracket 2 is 9-14mm, and the length of the marking blade 4 is 1-3mm. Specifically, the marking support 2 and the marking blade 4 with different specifications can be selected according to different diameters of the cornea of the eyeball.
The length of the operating handle 1 is 5-15cm.
The foregoing description of the specific exemplary embodiments of the invention has been presented for the purposes of illustration and description and is not intended to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application, to thereby enable others skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as may be suited to the particular use contemplated and contemplated by those skilled in the art without departing from the scope of the invention.
Claims (9)
1. An axial marker of corneal astigmatism, comprising: the axial marker comprises
An operating handle;
the marking bracket is in a semicircular ring shape, and two cantilevers are arranged at two ends of the marking bracket in the diameter direction;
the two ends of the rotary joint are respectively connected to one end of the operating handle and the middle part of the marking bracket;
and two marking blades which are arranged at the bottoms of the two cantilevers.
2. The corneal astigmatism axial marker of claim 1, wherein: the movable range of the rotary joint is 10-340 degrees.
3. The corneal astigmatism axial marker of claim 1, wherein: the marking edge is detachably mounted at the bottom of the cantilever.
4. The corneal astigmatism axial marker of claim 1, wherein: the radian of the blade of the marking blade is consistent with the radian of the cornea of the human eyeball.
5. The corneal astigmatism axial marker of claim 1, wherein: the cross section of the marking blade is triangular.
6. The corneal astigmatism axial marker of claim 1, wherein: the middle part of the operating handle is provided with anti-skid grains.
7. The corneal astigmatism axial marker of claim 1, wherein: the operating handle and the rotary joint are made of plastic or metal materials.
8. The corneal astigmatism axial marker of claim 1, wherein: the marking bracket and the marking blade are made of metal materials.
9. The corneal astigmatism axial marker of claim 1, wherein: the diameter of the semicircular marking bracket is 9-14mm, the length of the marking blade is 1-3mm, and the length of the operating handle is 5-15cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221935753.8U CN218552309U (en) | 2022-07-26 | 2022-07-26 | Cornea astigmatism axial marker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221935753.8U CN218552309U (en) | 2022-07-26 | 2022-07-26 | Cornea astigmatism axial marker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218552309U true CN218552309U (en) | 2023-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221935753.8U Active CN218552309U (en) | 2022-07-26 | 2022-07-26 | Cornea astigmatism axial marker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218552309U (en) |
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2022
- 2022-07-26 CN CN202221935753.8U patent/CN218552309U/en active Active
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