CN217793569U - Cornea tunnel knife - Google Patents
Cornea tunnel knife Download PDFInfo
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- CN217793569U CN217793569U CN202221315769.9U CN202221315769U CN217793569U CN 217793569 U CN217793569 U CN 217793569U CN 202221315769 U CN202221315769 U CN 202221315769U CN 217793569 U CN217793569 U CN 217793569U
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Abstract
The utility model discloses a cornea tunnel knife, which comprises a knife handle and a knife body, wherein the knife body comprises a connecting part and a knife edge part; the utility model discloses a be equipped with the long cutting edge portion of 2-3mm, cutting edge portion is equipped with trapezoidal cutting edge section and triangle-shaped cutting edge section, and be equipped with the spacing cambered surface unanimous with people's eye cornea reason radian on connecting portion, the cornea reason can be cut through to the triangle-shaped cutting edge section, narrow outer wide tunnel type incision in trapezoidal cutting edge section can be cut out, the depth of cut of the cutting edge portion can be restricted to the limiting displacement of the cutting edge portion of injecing length and spacing cambered surface, prevent that cutting edge portion from getting into in the eye too deeply and damaging tissues such as the fragile iris in the eye, crystalline lens, cause intraocular hemorrhage, serious complications such as cataract formation, so, the utility model discloses a cornea tunnel sword has excellent in use effect and the few advantage of complication to the glaucoma operation.
Description
Technical Field
The utility model relates to the technical field of ophthalmic surgery, in particular to a cornea tunnel knife.
Background
Glaucoma (glaucoma) is the first irreversible eye disease causing blindness in humans, and nearly 6000 million glaucoma patients exist in China, wherein more than 600 million causes blindness due to glaucoma. Glaucoma is a group of diseases characterized by atrophy and depression of optic papilla, visual field loss and visual deterioration, pathological increase of intraocular pressure is the most important risk factor of the onset of glaucoma, and if the aqueous humor is abnormally accumulated in the eyes of people, the increase of intraocular pressure is caused, so that the optic nerve is compressed to cause nerve damage.
Treatment of glaucoma relies on drugs, laser or surgery to reduce intraocular pressure. Wherein implantation of a glaucoma drain is an important and effective surgical approach. The drainage device needs to make a cornea or a corneal limbus incision, and the incision needs to be in a trapezoidal shape with a small eye and a large eye. Existing cutters tend to be too large or too small when making limbal incisions. In addition, the very sharp nature of the ophthalmic scalpel often results in excessive force causing the blade to penetrate too deeply into the eye and damage the delicate tissues such as iris, crystalline lens, etc., causing serious complications such as intraocular hemorrhage and cataract formation.
Therefore, the existing scalpel has the defects of poor using effect and many complications for glaucoma surgery.
In view of this, the present inventors have made extensive conceptions for various defects and inconveniences caused by the structural design of the above scalpel for glaucoma surgery, 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 tunnel sword, this cornea tunnel sword is arranged in the glaucoma operation to reach excellent in use effect and the few purpose of complication.
In order to achieve the above purpose, the solution of the present invention is:
a cornea tunnel knife comprises a knife handle and a knife body, wherein the knife body is fixed at one end of the knife handle, and the knife body comprises a connecting part and a knife edge part; one end of the connecting part is fixed on the knife handle, the other end of the connecting part is connected with the knife edge part, a limiting arc surface is arranged at one end, facing the knife edge part, of the connecting part, and the radian of the limiting arc surface is consistent with that of a corneal limbus of a human eye; the length of the knife edge part is 2-3mm, the knife edge part is provided with a trapezoidal knife edge section and a triangular knife edge section, the trapezoidal knife edge section is fixed on the connecting part, and the width of the trapezoidal knife edge section is gradually reduced from the connecting part to the outside until the trapezoidal knife edge section is connected with the triangular knife edge section.
The length of the connecting part is 8-10mm.
The handle is made of plastic, the connecting portion is made of metal or plastic, and the blade portion is made of metal or artificial gem.
The connecting part is provided with a connecting plate and a fixing plate; one end of the connecting plate is obliquely fixed at one end of the fixing plate, an included angle between the connecting plate and the fixing plate is 120-160 degrees, and the other end of the connecting plate is fixedly connected with the cutter handle; the other end of the fixing plate is fixedly connected with the knife edge part.
The connecting portion are further provided with a connecting round rod, and the connecting plate is fixedly connected with the knife handle through the connecting round rod.
The trapezoidal blade section and the triangular blade section are of an integrally formed structure.
The knife edge part and the connecting part are of an integrally formed structure.
The handle of a knife is equipped with and is cylindric mobile jib section and be the section of gripping of round platform form, the mobile jib section is the integrated into one piece structure with the section of gripping, the one end of the section of gripping links to each other with connecting portion.
The surface of the holding section is provided with granular or striped anti-skid protrusions.
After the scheme is adopted, the utility model discloses a be equipped with the long cutting edge portion of 2-3mm, cutting edge portion is equipped with trapezoidal cutting edge section and triangle-shaped cutting edge section, and be equipped with the spacing cambered surface unanimous with people's eye limbus radian on the connecting portion, triangle-shaped cutting edge section can cut through the limbus, trapezoidal cutting edge section can cut out the tunnel type incision of interior narrow outer width, the cutting depth of cutting edge portion can be restricted to the limiting displacement of limited length's cutting edge portion and spacing cambered surface, prevent that cutting edge portion from getting into in the eye too deeply and damaging tissues such as the intraocular fragile iris, crystalline lens, cause intraocular hemorrhage, serious complications such as cataract formation, so, the utility model discloses a corneal tunnel sword has excellent in use effect and the few advantage of complication to the glaucoma operation.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
Fig. 2 is a partially enlarged view of a point a in fig. 1.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not 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 to 2, for a preferred embodiment of the corneal tunnel knife of the present invention, the corneal tunnel knife includes a knife handle 1 and a knife body 2, the knife body 2 is fixed at one end of the knife handle 1, wherein the knife body 2 includes a connecting portion 21 and a blade portion 22; one end of the connecting part 21 is fixed on the knife handle 1, the other end of the connecting part 21 is connected with the knife edge part 22, one end of the connecting part 21, which faces the knife edge part 22, is provided with a limiting cambered surface 211, and the radian of the limiting cambered surface 211 is consistent with that of the corneal limbus of human eyes; the length of the knife edge part 22 is 2-3mm, the knife edge part 22 is provided with a trapezoidal knife edge section 221 and a triangular knife edge section 222, the trapezoidal knife edge section 221 is fixed on the connecting part 21, and the width of the trapezoidal knife edge section 221 is gradually reduced outwards from the connecting part 21 until the trapezoidal knife edge section 221 is connected with the triangular knife edge section 222.
When the tunnel incision instrument is used, a corneal limbus incision parallel to an iris is made under an operating microscope, a user holds the knife handle 1, and cuts the corneal limbus by using the blade part 22 of the knife body 2, during cutting, the triangular blade part 22 firstly cuts the corneal limbus, then the blade part 22 continues to cut into the eye until the trapezoidal blade part 221 cuts a tunnel incision with a narrow inner part and a wide outer part, wherein when the blade part 22 cuts into the eye, the limit arc surface 211 on the connecting part 21 can abut against the outer part of the corneal limbus of a human eye, so that the blade part 22 is prevented from entering the eye too deeply to damage tissues such as the fragile iris, crystalline lens and the like in the eye to cause serious complications such as intraocular hemorrhage, cataract formation and the like, and then the blade part 22 is withdrawn to finish the cutting of the tunnel incision.
The utility model discloses a focus on, the utility model discloses a be equipped with the long cutting edge portion 22 of 2-3mm, cutting edge portion 22 is equipped with trapezoidal cutting edge section 221 and triangle-shaped cutting edge section 222, and be equipped with the spacing cambered surface 211 unanimous with people's eye limbus radian on connecting portion 21, triangle-shaped cutting edge section 222 can cut through the limbus, trapezoidal cutting edge section 221 can cut out interior narrow outer wide tunnel type incision, the limiting displacement of the cutting edge portion 22 of limited length and spacing cambered surface 211 can restrict cutting depth of cutting edge portion 22, prevent that cutting edge portion 22 from getting into the eye too deeply and damaging tissues such as the fragile iris in the eye, crystalline lens, cause in-eye hemorrhage, serious complications such as cataract formation, so, the utility model discloses a corneal tunnel sword has excellent in use effect and the few advantage of complication to the glaucoma operation.
The length of the connecting part 21 is 8-10mm. The connecting part 21 with the length of 8-10mm is not only beneficial to observing the condition of human eyes by users, but also beneficial to stably operating the knife edge part 22 by the users, thereby further improving the using effect of the corneal tunnel knife.
The knife handle 1 is made of plastic, the connecting portion 21 is made of metal or plastic, and the blade portion 22 is made of metal or artificial gem.
The connecting portion 21 has a connecting plate 212 and a fixing plate 213; one end of the connecting plate 212 is obliquely fixed at one end of the fixing plate 213, an included angle between the connecting plate 212 and the fixing plate 213 is 120-160 degrees, and the other end of the connecting plate 212 is fixedly connected with the knife handle 1; the other end of the fixing plate 213 is fixedly connected to the blade part 22. Through setting up the contained angle between the connecting plate 212 with connecting portion 21 and fixed plate 213 to 120 to 160, when the handheld handle of a knife 1 of user, this contained angle is favorable to cutting edge portion 22 to the people's eye cornea reason to also be favorable to user's observation people's eye condition, thereby further improve the utility model discloses corneal tunnel sword's result of use.
The connecting portion 21 is further provided with a connecting round rod 214, and the connecting plate 212 is fixedly connected with the tool holder 1 through the connecting round rod 214. So, it is thinner to connect round bar 214, is favorable to the user to observe the human eye condition to further improve the utility model discloses corneal tunnel sword's result of use.
The trapezoidal blade section 221 and the triangular blade section 222 are integrally formed. Therefore, the cornea tunnel knife of the utility model has the advantage of stable structure.
The blade portion 22 and the connecting portion 21 are integrally formed. Thus, the utility model discloses a cornea tunnel sword has stable in structure's advantage.
The knife handle 1 is provided with a cylindrical main rod section 11 and a truncated cone-shaped holding section 12, the main rod section 11 and the holding section 12 are of an integrally formed structure, and one end of the holding section 12 is connected with the connecting part 21. When a user holds the knife handle 1, the holding of the hand can be attached to the truncated cone-shaped holding section 12, so that the user can hold the corneal tunnel knife more firmly and stably.
The surface of the holding section 12 is provided with a granular or stripe-shaped anti-slip protrusion 121. So, the antiskid raised edge 121 can play the antiskid effect to the user holds more firmly, stable to cornea tunnel sword.
The main rod section 11 and the holding section 12 are integrally formed. Thus, the utility model discloses a cornea tunnel sword has stable in structure's advantage.
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. The utility model provides a cornea tunnel sword, cornea tunnel sword includes handle of a knife and cutter body, the one end at the handle of a knife is fixed to the cutter body, its characterized in that: the cutter body comprises a connecting part and a cutter edge part; one end of the connecting part is fixed on the knife handle, the other end of the connecting part is connected with the knife edge part, a limiting cambered surface is arranged at one end, facing the knife edge part, of the connecting part, and the radian of the limiting cambered surface is consistent with that of the corneal limbus of human eyes; the length of the knife edge part is 2-3mm, the knife edge part is provided with a trapezoidal knife edge section and a triangular knife edge section, the trapezoidal knife edge section is fixed on the connecting part, and the width of the trapezoidal knife edge section is gradually reduced from the connecting part to the outside until the trapezoidal knife edge section is connected with the triangular knife edge section.
2. The corneal tunnel knife of claim 1, wherein: the length of the connecting part is 8-10mm.
3. The corneal tunnel knife of claim 1, wherein: the knife handle is made of plastic materials, the connecting portion is made of metal materials or plastic materials, and the knife edge portion is made of metal materials or artificial jewel materials.
4. The corneal tunnel knife of claim 1, wherein: the connecting part is provided with a connecting plate and a fixing plate; one end of the connecting plate is obliquely fixed at one end of the fixing plate, an included angle between the connecting plate and the fixing plate is 120-160 degrees, and the other end of the connecting plate is fixedly connected with the cutter handle; the other end of the fixing plate is fixedly connected with the knife edge part.
5. The corneal tunnel knife of claim 4, wherein: the connecting portion is further provided with a connecting round rod, and the connecting plate is fixedly connected with the knife handle through the connecting round rod.
6. The corneal tunnel knife of claim 1, wherein: the trapezoidal blade section and the triangular blade section are of an integrally formed structure.
7. The corneal tunneler as in claim 1, wherein: the knife edge part and the connecting part are of an integrally formed structure.
8. The corneal tunneler as in claim 1, wherein: the handle of a knife is equipped with and is cylindric mobile jib section and be the section of gripping of round platform form, the mobile jib section is the integrated into one piece structure with the section of gripping, the one end of the section of gripping links to each other with connecting portion.
9. The corneal tunnel knife of claim 8, wherein: the surface of the holding section is provided with granular or striped anti-skid protrusions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221315769.9U CN217793569U (en) | 2022-05-30 | 2022-05-30 | Cornea tunnel knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221315769.9U CN217793569U (en) | 2022-05-30 | 2022-05-30 | Cornea tunnel knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217793569U true CN217793569U (en) | 2022-11-15 |
Family
ID=83987128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221315769.9U Active CN217793569U (en) | 2022-05-30 | 2022-05-30 | Cornea tunnel knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217793569U (en) |
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2022
- 2022-05-30 CN CN202221315769.9U patent/CN217793569U/en active Active
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