CN215915233U - Cutting device of corneal astigmatism release assistor - Google Patents
Cutting device of corneal astigmatism release assistor Download PDFInfo
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- CN215915233U CN215915233U CN202122432635.7U CN202122432635U CN215915233U CN 215915233 U CN215915233 U CN 215915233U CN 202122432635 U CN202122432635 U CN 202122432635U CN 215915233 U CN215915233 U CN 215915233U
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Abstract
The utility model provides a cutting device of an auxiliary device for loosening corneal astigmatism, which comprises a sliding cutter groove component and a side cutter, wherein the sliding cutter groove component comprises a cutter groove fixing piece and a cutter groove sliding piece, fixing grooves are respectively arranged on the outer surfaces of the left end and the right end of the cutter groove fixing piece, a sliding groove is arranged at the front end of each fixing groove, a cutter groove rear fixing surface is arranged at the front end of the cutter groove fixing piece, and an included angle is formed between each cutter groove rear fixing surface and a horizontal plane. The lower surface of the cutter groove sliding part of the device is an eye-imitating spherical surface, so that the device can stably contact eyeballs, the cutter marking line structure design can accurately position an astigmatism axis and a cornea incision starting end, the radian and the depth of a cornea incision can be stabilized, the device can ensure that the incision is regular, the shape is round, the depth is fixed, and the postoperative effect is guaranteed. The utility model can be widely applied to the operation of corneal astigmatism release.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a cutting device of an auxiliary device for relaxing corneal astigmatism.
Background
Cataract is the blinding eye disease with the highest incidence worldwide, and with the great progress of economic and technological development, cataract patients have higher and higher requirements on postoperative visual quality and naked eye vision, which not only requires clear vision in the whole course, but also requires a durable, comfortable and non-lens state. The corneal astigmatism before operation is an important factor causing poor postoperative vision of cataract patients. The modern manual limbal relaxing operation is quite economical, simple and easy to implement, has high safety, has good effect of correcting the middle-low angle corneal astigmatism, and is an operation technology which is very suitable for popularization.
However, this procedure requires the assistance of a device that precisely marks the location of the corneal astigmatism and controls the depth of the corneal incision. In the past, for marking the astigmatic axis of the cornea, a doctor manually marks the cornea by using a marker pen under a slit lamp microscope when a patient sits before an operation, the slit light of the microscope is firstly adjusted to the horizontal position and is modulated to be narrowest when the marking is carried out, a light band passes through the center of a pupil, and the marker pen is used for marking the horizontal position at the corneal limbus. During operation, the marked 0-degree position is referenced, and the astigmatism axis position is further determined by utilizing the annular astigmatism disc with scales. The method has high requirements on operators, poor repeatability and easy occurrence of errors. In view of the above, how to stably and accurately control the position, shape, length and depth of the incision during the operation of limbal loosening is a problem that needs to be solved in the art.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems of high requirements on operators, poor repeatability and easy error occurrence of manual marking in the traditional operation mode, the utility model provides the cutting device of the auxiliary device for loosening the corneal astigmatism.
Therefore, the technical scheme of the utility model is that the cornea astigmatism release assistor cutting device comprises a sliding cutter groove component and a side cutter, wherein the sliding cutter groove component comprises a cutter groove fixing piece and a cutter groove sliding piece, the outer surfaces of the left end and the right end of the cutter groove fixing piece are respectively provided with a fixing groove, the front end of each fixing groove is provided with a sliding groove, the front end of the cutter groove fixing piece is provided with a cutter groove rear fixing surface, and an included angle is formed between each cutter groove rear fixing surface and a horizontal plane;
the upper surface of the cutter groove sliding piece is provided with a cutter marking line, an included angle is formed between the lower surface of the cutter groove sliding piece and the horizontal plane, the left end and the right end of the rear part of the cutter groove sliding piece are respectively provided with a cutter groove sliding strip, the cutter groove sliding strips are connected with the sliding grooves in a sliding mode, adjusting screws are arranged inside the fixing grooves, and the sliding positions of the cutter groove sliding strips in the sliding grooves are adjusted through the adjusting screws;
the rear part of the cutter groove sliding piece is provided with a cutter groove front fixing surface which is parallel to the cutter groove rear fixing surface, the cutter groove front fixing surface, the cutter groove rear fixing surface and the two cutter groove sliding strips form a cutter fixing groove, the side cutter is inserted into the cutter fixing groove, and the cutting edge of the side cutter is exposed from the lower part of the cutter fixing groove.
Preferably, the shape of the lower surface of the knife groove sliding part is a conical surface, and the included angle between the lower surface of the knife groove sliding part and the horizontal plane is 30 degrees.
Preferably, the shape of the lower surface of the sipe sliding member is a spherical surface, and the included angle between the tangential direction of the lower surface of the sipe sliding member and the horizontal plane is 30 degrees.
Preferably, the included angle between the fixing surface behind the cutter groove and the horizontal plane is 60 degrees.
Preferably, the width of the cutter fixing groove is 0.2 +/-0.1 mm.
Preferably, the width of the cutter fixing groove is 0.2mm, the length of the upper end of the cutter fixing groove is 1.2mm, the length of the lower end of the cutter fixing groove is 0.7mm, and the blade exposure length after the side cutter is inserted into the cutter fixing groove is 0.85 mm.
Preferably, the material of the sliding knife groove component is titanium alloy or stainless steel.
The utility model has the advantages that the cutter groove sliding piece is connected with the cutter groove fixing piece in a sliding mode through the cutter groove sliding strip and the sliding groove, the sliding position of the cutter groove sliding strip in the sliding groove can be adjusted through the adjusting screw, the width of the cutter fixing groove can be adjusted, the exposed length of the cutting edge of the side cutter placed in the cutter fixing groove is changed accordingly, meanwhile, the sliding cutter groove component can slide along the auxiliary device for astigmatism release of the cornea, and the side cutter completes the operation of limbus release through the sliding of the sliding cutter groove component. Make the device can control incision position, shape, length and the degree of depth when the limbus is loosened the operation steadily and accurately, ensure that incision rule, shape are round and positive, the degree of depth is fixed, ensured the postoperative effect.
And because the included angle between the rear fixed surface of the cutter groove and the horizontal plane is 60 degrees, the device is better attached to the edge of the corneosclera, the side cutter is vertical to the surface of the cornea, and the depth and precision control of the operation are ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a sliding knife slot assembly;
FIG. 3 is a schematic view of a configuration of a sipe holder;
FIG. 4 is a front view of FIG. 2;
FIG. 5 is a schematic view of the construction of a sipe slider;
FIG. 6 is a partial cross-sectional view of the present invention;
FIG. 7 is a schematic view of a sliding knife channel assembly in a corneal astigmatism release aid.
The symbols in the drawings illustrate that:
1. a sliding knife slot assembly; 101. a cutter groove fixing piece; 1011. fixing the groove; 1012. a sliding groove; 1013 knife slot rear fixing surface; 102. a knife groove sliding part; 1021. marking a line by a cutter; 1022. a knife slot sliding strip; 1023. a front fixing surface of the cutter groove; 103. a cutter fixing groove; 104. adjusting screws; 2. a side cutter; 3. an auxiliary device for corneal astigmatism release.
Detailed Description
The present invention will be further described with reference to the following examples.
Fig. 1 to 6 show an embodiment of a cutting device of an auxiliary device for assisting in the release of corneal astigmatism according to the present invention, which comprises a sliding knife channel assembly 1 and a side knife 2, wherein the sliding knife channel assembly 1 comprises a knife channel fixing member 101 and a knife channel sliding member 102, the knife channel fixing member 101 is located inside a T-shaped sliding groove of the auxiliary device for assisting in the release of corneal astigmatism 3, the knife channel fixing member 101 is shaped to fit the T-shaped sliding groove of the auxiliary device for assisting in the release of corneal astigmatism 3, the knife channel fixing member 101 is slidably connected with the auxiliary device for assisting in the release of corneal astigmatism 3, and the stability of the operation can be stably ensured since the knife channel fixing member 101 can slide in the T-shaped sliding groove of the auxiliary device for assisting in the release of corneal astigmatism 3.
The outer surfaces of the left end and the right end of the knife groove fixing piece 101 are respectively provided with a fixing groove 1011, the front end of the fixing groove 1011 is provided with a sliding groove 1012, the front end of the knife groove fixing piece 101 is provided with a knife groove rear fixing surface 1013, the included angle B between the knife groove rear fixing surface 1013 and the horizontal plane is 60 degrees, the upper surface of the knife groove sliding piece 102 is provided with a cutter marking line 1021, the cutter marking line 1021 is collinear with the scale line of the cornea astigmatism release assistor 3, the cutter marking line 1021 can conveniently position the starting position and the ending position of the cutter, the lower surface of the knife groove sliding piece 102 is a spherical surface, the radius R of the spherical surface is 11 +/-0.5 mmm, the included angle between the tangential direction of the lower surface of the knife groove sliding piece 102 and the horizontal plane is 30 degrees, the lower surface of the knife groove sliding piece 102 and the lower surface of the cornea astigmatism release assistor 3 are concentric, because the lower surface of the knife groove sliding piece 102 is an eye-imitating spherical surface, the device can be in closer contact with an eyeball, and the positioning stability and accuracy are ensured, the left end and the right end of the rear part of the cutter groove sliding piece 102 are respectively provided with a cutter groove sliding strip 1022, the cutter groove sliding strip 1022 is in sliding connection with the sliding groove 1012, the inside of the fixing groove 1011 is provided with an adjusting screw 104, the sliding position of the cutter groove sliding strip 1022 in the sliding groove 1012 is adjusted through the adjusting screw 104, the rear part of the cutter groove sliding piece 102 is provided with a cutter groove front fixing surface 1023, the cutter groove front fixing surface 1023 is parallel to the cutter groove rear fixing surface 1013, the cutter groove front fixing surface 1023, the cutter groove rear fixing surface 1013 and the two cutter groove sliding strips 1022 form a cutter fixing groove 103, the width L of the cutter fixing groove 103 is 0.2 +/-0.1 mm, and the material of the sliding cutter groove component 1 is titanium alloy or stainless steel, and has the characteristics of high strength, small density, good mechanical performance, and good toughness and corrosion resistance. By adopting the structure design, the knife groove sliding piece 102 is connected with the knife groove fixing piece 101 in a sliding way through the knife groove sliding strip 1022 and the sliding groove 1012, the sliding position of the knife groove sliding strip 1022 in the sliding groove 1012 can be adjusted through the adjusting screw 104, so that the width of the cutter fixing groove 103 can be adjusted, the exposed length of the blade of the side cutter 2 placed in the cutter fixing groove 103 is changed, meanwhile, the sliding knife groove component 1 can slide along the corneal astigmatism release assistor 3, and the side cutter 2 finishes the corneal limbus release operation through the sliding of the sliding knife groove component 1. In conclusion, the device can stably and accurately control the position, the shape, the length and the depth of the incision during the operation of limbus loosening, ensure that the incision is regular, the shape is round and regular, the depth is fixed, and ensure the postoperative effect.
In one embodiment, the width L of the knife fixing groove 103 is 0.2mm, the length of the upper end of the knife fixing groove 103 is 1.2mm, and the length of the lower end of the knife fixing groove 103 is 0.7mm, so that the blade exposure length of the side knife 2 inserted into the knife fixing groove 103 is 0.85mm, that is, the depth of incision of the cornea is 0.85mm, and the depth of incision of the limbus can be applied to most patients, and can be widely popularized in the operation of limbus release.
In one embodiment, the shape of the lower surface of the sipe slider 102 is a tapered surface, and the included angle C between the lower surface of the sipe slider 102 and the horizontal plane is 30 degrees. The design ensures that the device can be in close contact with the eyeball, the positioning stability and accuracy are ensured, meanwhile, the processing of the conical surface is more convenient, and the production cost is low.
And because the size of the included angle B between the cutter groove rear fixing surface 1013 and the horizontal plane is 60 degrees, the device is better attached to the corneosclera margin, so that the side cutter 2 is vertical to the surface of the cornea, and the depth and precision control of the operation are ensured.
The utility model provides a cutting device of a corneal astigmatism release assistor, wherein the lower surface of a cutter groove sliding part of the device is an eye-imitating spherical surface, so that the device can be stably contacted with an eyeball, the axis of astigmatism and the starting end of a corneal incision can be accurately positioned by the structural design of a cutter marking line, the radian and the depth of the corneal incision can be stabilized, and the device can ensure that the incision is regular, round in shape and fixed in depth, so that the postoperative effect is ensured.
However, the above description is only exemplary of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.
Claims (7)
1. A cutting device of an auxiliary device for loosening corneal astigmatism is characterized in that: the sliding knife groove assembly comprises a knife groove fixing piece and a knife groove sliding piece, fixing grooves are respectively formed in the outer surfaces of the left end and the right end of the knife groove fixing piece, a sliding groove is formed in the front end of each fixing groove, a knife groove rear fixing surface is formed in the front end of the knife groove fixing piece, and an included angle is formed between the knife groove rear fixing surface and the horizontal plane;
the upper surface of the cutter groove sliding piece is provided with a cutter marking line, an included angle is formed between the lower surface of the cutter groove sliding piece and the horizontal plane, the left end and the right end of the rear part of the cutter groove sliding piece are respectively provided with a cutter groove sliding strip, the cutter groove sliding strips are connected with the sliding grooves in a sliding mode, the fixing grooves are internally provided with adjusting screws, and the sliding positions of the cutter groove sliding strips in the sliding grooves are adjusted through the adjusting screws;
the rear part of the cutter groove sliding piece is provided with a cutter groove front fixing surface which is parallel to the cutter groove rear fixing surface, the cutter groove front fixing surface, the cutter groove rear fixing surface and the two cutter groove sliding strips form a cutter fixing groove, the side cutter is inserted into the cutter fixing groove, and the cutting edge of the side cutter is exposed from the lower part of the cutter fixing groove.
2. A corneal astigmatism release aid cutting device according to claim 1, wherein: the shape of the lower surface of the knife groove sliding piece is a conical surface, and the included angle between the lower surface of the knife groove sliding piece and the horizontal plane is 30 degrees.
3. A corneal astigmatism release aid cutting device according to claim 1, wherein: the shape of the lower surface of the knife groove sliding piece is a spherical surface, and the included angle between the tangential direction of the lower surface of the knife groove sliding piece and the horizontal plane is 30 degrees.
4. A corneal astigmatism release aid cutting device according to claim 1, wherein: the included angle between the rear fixed surface of the cutter groove and the horizontal plane is 60 degrees.
5. A corneal astigmatism release aid cutting device according to claim 1, wherein: the width of the cutter fixing groove is 0.2 +/-0.1 mm.
6. A corneal astigmatism release aid cutting device according to claim 5, wherein: the width size of cutter fixed slot is 0.2mm, the upper end length of cutter fixed slot is 1.2mm, the lower extreme length of cutter fixed slot is 0.7mm, the side cutter inserts the cutter fixed slot back cutting edge and exposes length to be 0.85 mm.
7. A cutting device of an astigmatism release aid for cornea as claimed in any one of claims 1 to 6, wherein: the sliding cutter groove component is made of titanium alloy or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122432635.7U CN215915233U (en) | 2021-10-09 | 2021-10-09 | Cutting device of corneal astigmatism release assistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122432635.7U CN215915233U (en) | 2021-10-09 | 2021-10-09 | Cutting device of corneal astigmatism release assistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215915233U true CN215915233U (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122432635.7U Active CN215915233U (en) | 2021-10-09 | 2021-10-09 | Cutting device of corneal astigmatism release assistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215915233U (en) |
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2021
- 2021-10-09 CN CN202122432635.7U patent/CN215915233U/en active Active
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