CN218636200U - Improved 15-degree cornea puncture knife - Google Patents
Improved 15-degree cornea puncture knife Download PDFInfo
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- CN218636200U CN218636200U CN202222322879.4U CN202222322879U CN218636200U CN 218636200 U CN218636200 U CN 218636200U CN 202222322879 U CN202222322879 U CN 202222322879U CN 218636200 U CN218636200 U CN 218636200U
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Abstract
An improved 15-degree cornea puncture knife belongs to an ophthalmic medical appliance. The knife body is in a shovel shape and consists of a blade and a supporting surface at the rear end of the blade, an included angle between the blade and the supporting surface is 125 degrees, the cross section of the blade is triangular, the angle of the tip end of the blade is 15 degrees, a cutting edge is arranged on one side edge of the blade, the knife handle is connected with the supporting surface, and a limiting groove is arranged on the knife handle at the same side with the cutting edge. The utility model has the advantages that: the blade and the supporting surface form a certain angle, so that when a doctor performs cataract surgery to make a lateral incision of a nasal cornea, the shielding of the root of the nose is avoided, and the safety is improved. The limit groove can position the depth of the cutting, thereby improving the standardization and the safety of the cataract operation side incision preparation and shortening the learning curve of the cornea side incision preparation. The reflective belt is carved on the surface of the knife body, so that the functions of positioning the cutting feed angle and the cutting feed depth and limiting the size of the corneal incision are achieved.
Description
Technical Field
The utility model belongs to the field of ophthalmic surgery instruments, in particular to improvement type 15 cornea puncture knives.
Background
Making a corneal side incision is one of the important steps in phacoemulsification surgery. The moderate corneal side incision is not only beneficial to the entering and exiting of surgical instruments such as a nucleus cleaver, a positioning hook and the like, but also can improve the safety of the postoperative corneal incision.
Currently, most clinical corneal side incisions are made by using a disposable metal 15-degree corneal puncture knife. However, the currently clinically used 15-degree corneal puncture knife is designed as a straight knife, and when a nasal corneal side incision is made, inconvenience is caused due to shielding of the nasal root, so that the risk of puncturing the lens capsule in the cutting process is increased.
Disclosure of Invention
An object of the utility model is to overcome foretell defect, provide a 15 cornea puncture knives of improvement type, have the angle and can indicate the depth of cut, further improve the standardization and the security of cornea side incision preparation.
The utility model aims at realizing through the following technical scheme: the utility model provides a 15 cornea puncture swoves of improvement type which characterized in that: the knife body is shovel-shaped and comprises a blade and a supporting surface at the rear end of the blade, the included angle between the surface of the blade and the supporting surface is 125 degrees, the cross section of the blade is triangular, the angle of the tip end of the blade is 15 degrees, a cutting edge is arranged on one side edge of the blade, the knife handle is connected with the supporting surface, and the limiting groove is formed in the knife handle on the same side as the cutting edge.
And the upper surface of the blade is provided with a reflective strip.
The tool handle is connected with the supporting surface through a connecting part.
The utility model has the advantages that:
1. the blade and the supporting surface form a certain angle, so that when a doctor performs cataract surgery to make a lateral incision of a nasal cornea, the shielding of the root of the nose is avoided, and the safety is improved.
2. The limit groove can position the depth of the cutting, thereby improving the standardization and the safety of the cataract operation side incision preparation and shortening the learning curve of the cornea side incision preparation.
3. The reflective belt is carved on the surface of the knife body, so that the functions of positioning the cutting feed angle and the cutting feed depth and limiting the size of the corneal incision are achieved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a plan view of the present invention.
Wherein:
the cutting tool comprises a tool body 1, a connecting part 2, a tool handle 3, a limiting groove 4, a cutting edge 5, a light-reflecting positioning mark strip 6, a blade 7 and a supporting surface 8.
Detailed Description
Example (b): as shown in the figure, a 15 cornea puncture knives of improvement type, including cutter body 1, handle of a knife 3, spacing groove 4, cutting edge 5 and reflection of light positioning mark 6, cutter body 1 is the shovel shape, and length is 10mm, comprises the holding surface 8 of 7 rear ends of blade and blade, blade 7 adopts 4Cr13 stainless steel material to make, and the cross-section of blade is isosceles triangle, and 7 most advanced angles of blade are 15, and a side of blade 7 is equipped with cutting edge 5, and cutting edge length is 6mm, the surface of blade 7 is the metal non-reflection of light face through laser treatment, uses the Nd apart from 7 most advanced 3mm departments of blade: YAG laser engraving reflection of light positioning mark strip 6 that the width is 0.3mm, blade 7 is 125 with the contained angle of holding surface 8, the handle of a knife 3 of saying adopts the PVC material to make, for round blunt rod type, length is 12cm, and the diameter is 5mm, handle of a knife 3 through with the cutter body be same material integrated into one piece's diameter 0.8mm, length 4 mm's cylindricality connecting portion 2 is connected with holding surface 8, the axis of connecting portion 2 is 125 with the axis contained angle of blade, be equipped with spacing groove 4 on the handle of a knife 3 of handle of a knife and 5 homonymies of cutting edge, spacing groove length is 15mm.
The working principle is as follows:
when the ophthalmologic operation is carried out, the patient lies on the operating table, the eyes look straight ahead, the operation eye is located at the horizontal position, the operation microscope is located right above the operation eye, and the light projected by the operation microscope is just vertical to the operation eye.
When the corneal incision of cataract surgery is made, a doctor holds the corneal puncture knife in a pen holding mode, the thumb holds the horizontal limiting groove on one side of the knife handle, and the whole knife handle is not easy to roll. The knife handle is adjusted under the microscope, so that the blade plane is parallel to the plane of the iris, and at the moment, the light-reflecting positioning mark strip is obviously reflected due to the vertical irradiation of a microscope light source. The sharp end of the blade is positioned at the edge of the transparent cornea by holding the knife, the straight line where the blade is positioned points to the center of the cornea, the blade plane is parallel to the iris plane, the knife is fed in the cornea, the puncture knife is horizontally withdrawn after the outer opening of the incision of the cornea reaches the front edge of the reflective positioning mark strip, and the incision on the side of the cornea is manufactured immediately.
Claims (3)
1. An improvement type 15 cornea puncture sword which characterized in that: the knife body is shovel-shaped and comprises a blade and a supporting surface at the rear end of the blade, the included angle between the blade and the supporting surface is 125 degrees, the cross section of the blade is triangular, the angle of the tip end of the blade is 15 degrees, a cutting edge is arranged on one side edge of the blade, the knife handle is connected with the supporting surface, and the limiting groove is formed in the knife handle on the same side as the cutting edge.
2. The improved 15 ° corneal puncture knife of claim 1, wherein: and the upper surface of the blade is provided with a reflective strip.
3. The improved 15 ° corneal puncture knife of claim 1, wherein: the knife handle is connected with the supporting surface through a connecting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222322879.4U CN218636200U (en) | 2022-09-01 | 2022-09-01 | Improved 15-degree cornea puncture knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222322879.4U CN218636200U (en) | 2022-09-01 | 2022-09-01 | Improved 15-degree cornea puncture knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218636200U true CN218636200U (en) | 2023-03-17 |
Family
ID=85491284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222322879.4U Active CN218636200U (en) | 2022-09-01 | 2022-09-01 | Improved 15-degree cornea puncture knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218636200U (en) |
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2022
- 2022-09-01 CN CN202222322879.4U patent/CN218636200U/en active Active
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