CN113749850A - Auxiliary device for cornea astigmatism release - Google Patents
Auxiliary device for cornea astigmatism release Download PDFInfo
- Publication number
- CN113749850A CN113749850A CN202111174624.1A CN202111174624A CN113749850A CN 113749850 A CN113749850 A CN 113749850A CN 202111174624 A CN202111174624 A CN 202111174624A CN 113749850 A CN113749850 A CN 113749850A
- Authority
- CN
- China
- Prior art keywords
- groove
- sliding
- cutter
- fixing
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
Abstract
The invention provides a corneal astigmatism release assistor which comprises an outer fixing ring, an operating handle and a sliding cutter groove assembly, wherein the upper surface of the outer fixing ring is provided with an axis dial scale, the axis dial scale comprises scale marks and angle scales, the middle part of the outer fixing ring is provided with an outer ring sliding groove, the outer ring side surface of the outer fixing ring is provided with a cutter groove adjusting port, the cutter groove adjusting port is communicated with the outer ring sliding groove, and an included angle is formed between the lower surface of the outer fixing ring and the horizontal plane. The lower surface of an outer fixing ring of the device is an eye-imitating spherical surface, so that the device can stably contact eyeballs, the structural design of an axis dial scale can accurately position an astigmatism axis and a corneal incision starting end, a sliding knife groove component can slide and can stabilize the radian and the depth of a corneal incision, the device can ensure that the incision is regular, the shape is round, the depth is fixed, and the postoperative effect is guaranteed. The invention can be widely applied to the operation of corneal astigmatism release.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a corneal astigmatism release assistor.
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.
Disclosure of Invention
Aiming at the technical problems of high requirements on operators, poor repeatability and easy occurrence of errors in the manual marking in the traditional operation mode, the invention provides the corneal astigmatism release assistor.
Therefore, the technical scheme of the invention is that the cornea astigmatism release assistor comprises an outer fixing ring, an operating handle and a sliding cutter groove assembly, wherein the upper surface of the outer fixing ring is provided with an axis dial scale, the axis dial scale comprises scale lines and angle scales, the middle part of the outer fixing ring is provided with an outer ring sliding groove, the outer ring side surface of the outer fixing ring is provided with a cutter groove adjusting port, the cutter groove adjusting port is communicated with the outer ring sliding groove, and an included angle is formed between the lower surface of the outer fixing ring and the horizontal plane;
the sliding cutter groove assembly comprises a cutter groove fixing piece and a cutter groove sliding piece, the cutter groove fixing piece is positioned in the outer ring sliding groove, the shape of the cutter groove fixing piece is matched with that of the outer ring sliding groove, the cutter groove fixing piece is connected with the outer ring sliding groove in a sliding mode, fixing grooves are formed in the outer surfaces of the left end and the right end of the cutter groove fixing piece respectively, a sliding groove is formed in the front end of each fixing groove, a cutter groove rear fixing surface is formed in the front end of the cutter groove fixing piece, and an included angle is formed between the cutter 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, 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 part 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, and the operating handle is fixedly connected with the outer ring side surface of the outer fixing ring.
Preferably, the outer fixing ring is shaped like a circular ring or a semi-circular ring.
Preferably, the width of the axis dial is 2 + -0.1 mm, and the diameter of the inner ring of the axis dial is 11 + -0.5 mm.
Preferably, the lower surface of the outer fixing ring is a conical surface, the included angle between the lower surface of the outer fixing ring and the horizontal plane is 30 degrees, 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.
Preferably, the lower surface of the outer fixing ring is spherical, an included angle between a tangential direction of the lower surface of the outer fixing ring and a horizontal plane is 30 degrees, the lower surface of the knife groove slider is spherical, an included angle between the tangential direction of the lower surface of the knife groove slider and the horizontal plane is 30 degrees, and the lower surface of the outer fixing ring and the lower surface of the knife groove slider are spherical surfaces of the same sphere.
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 outer ring sliding groove is in a T-shaped sliding groove shape, the width of the T-shaped sliding groove is 0.8 +/-0.1 mm, the height of the T-shaped sliding groove is 3 +/-0.2 mm, and the width of the opening of the T-shaped sliding groove is 1 +/-0.1 mm.
Preferably, the material of the corneal astigmatism release aid is titanium alloy or stainless steel.
The invention 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 outer ring sliding groove of the outer fixing ring 1, 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 outer ring side surface of the outer fixing ring is provided with the cutter groove adjusting opening which is communicated with the outer ring sliding groove, the design can facilitate the adjustment of the width of the cutter fixing groove, and further facilitate the adjustment of the length of the side cutter exposed out of the cutting edge after the side cutter is inserted into the cutter fixing groove, so that the device can more rapidly and accurately position different incision depths. Meanwhile, the design of the cutter groove adjusting opening facilitates the maintenance of the sliding cutter groove group.
And because the included angle between the tangential direction of the lower surface of the outer fixing ring and the horizontal plane is 30 degrees, the included angle between the tangential direction of the lower surface of the cutter groove sliding piece and the horizontal plane is 30 degrees, and the included angle between the rear fixing 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 perpendicular 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 view of the overall structure of the present invention with the operating handle removed;
FIG. 3 is a rear view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is a cross-sectional view taken at A-A of FIG. 4;
FIG. 6 is a schematic view of the overall structure of a sliding knife slot assembly;
FIG. 7 is a schematic view of a configuration of a sipe holder;
FIG. 8 is a left side view of FIG. 7;
FIG. 9 is a schematic view of the construction of a sipe slider;
FIG. 10 is a schematic view showing the overall structure of the sliding blade groove assembly after the side cutter is inserted;
FIG. 11 is a partial cross-sectional view of the present invention after the side cutter has been placed;
fig. 12 is a schematic structural view of the outer fixing ring in a semi-circular ring shape.
The symbols in the drawings illustrate that:
1. an outer fixing ring; 101. an axis position dial; 102. an outer ring sliding groove; 103. a cutter groove adjusting opening; 2. an operating handle; 3. a sliding knife slot assembly; 301. a cutter groove fixing piece; 3011. fixing the groove; 3012. a sliding groove; 3013 fixing the rear part of the knife slot; 302. a knife groove sliding part; 3021. marking a line by a cutter; 3022. a knife slot sliding strip; 3023. a front fixing surface of the cutter groove; 303. a cutter fixing groove; 304. adjusting screws; 4. and (4) a side cutter.
Detailed Description
The present invention will be further described with reference to the following examples.
Fig. 1 to 12 show an embodiment of an auxiliary device for assisting in loosening of corneal astigmatism, which includes an outer fixing ring 1, an operating handle 2 and a sliding knife channel assembly 3, wherein the outer fixing ring 1 is in the shape of a circular ring or a semicircular ring, the circular ring can facilitate positioning and operation at various angles and positions, and the semicircular ring has an observation window at a semicircular gap to avoid shielding and facilitate observation of the position from the semicircular gap, so that the operation is more convenient and faster.
The upper surface of the outer fixing ring 1 is provided with an axis dial 101, the axis dial 101 comprises scale lines and angle scales, the width of the axis dial 101 is 2 +/-0.1 mm, the inner ring diameter of the axis dial 101 is 11 +/-0.5 mm, the middle part of the outer fixing ring 1 is provided with an outer ring sliding groove 102, the outer ring sliding groove 102 is in a T-shaped sliding groove shape, the width of the T-shaped sliding groove is 0.8 +/-0.1 mm, the height of the T-shaped sliding groove is 3 +/-0.2 mm, the width of the opening of the T-shaped sliding groove is 1 +/-0.1 mm, the outer ring side surface of the outer fixing ring 1 is provided with a cutter groove adjusting opening 103, the cutter groove adjusting opening 103 is communicated with the outer ring sliding groove 102, the lower surface of the outer fixing ring 1 is in a spherical surface shape, 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 outer fixing ring 1 and the horizontal plane is 30 degrees, the operating handle 2 is fixedly connected with the outer ring side surface of the outer fixing ring 1, this kind of structural design, because the lower surface of outer fixed ring 1 is imitative eye sphere, makes device and eyeball contact more closely, has guaranteed the stability and the accuracy nature of location, and the structural design of axis graduated disk 101 can accurate positioning astigmatism axis and cornea incision initiating terminal, and what axis graduated disk 101 size can be better attaches in the corneoscleral edge, and has avoided the scale to be sheltered from.
As can be seen from the figure, the sliding knife channel assembly 3 comprises a knife channel fixing member 301 and a knife channel sliding member 302, the knife channel fixing member 301 is positioned inside the T-shaped sliding groove of the outer ring sliding groove 102, the shape of the knife channel fixing member 301 is matched with the T-shaped sliding groove of the outer ring sliding groove 102, the knife channel fixing member 301 is connected with the outer ring sliding groove 102 in a sliding way, and the stability of the operation can be stably ensured because the knife channel fixing member 301 can slide along the T-shaped sliding groove of the outer ring sliding groove 102.
The outer surfaces of the left end and the right end of the cutter groove fixing piece 301 are respectively provided with a fixing groove 3011, the front end of the fixing groove 3011 is provided with a sliding groove 3012, the front end of the cutter groove fixing piece 301 is provided with a cutter groove rear fixing surface 3013, the included angle B between the cutter groove rear fixing surface 3013 and the horizontal plane is 60 degrees, the upper surface of the cutter groove sliding piece 302 is provided with a cutter marking line 3021, the cutter marking line 3021 is collinear with the scale line of the axis dial 101, the cutter marking line 3021 can conveniently position the starting position and the ending position of a cutter, the lower surface of the cutter groove sliding piece 302 is spherical, 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 cutter groove sliding piece 302 and the horizontal plane is 30 degrees, the lower surface of the cutter groove sliding piece 302 and the lower surface of the outer fixing ring 1 are concentric, and the lower surface of the cutter groove sliding piece 302 is an eye-imitating spherical surface, so that the device can be in closer contact with an eyeball, the stability and the accuracy of positioning are ensured, the left end and the right end of the rear part of the knife slot sliding piece 302 are respectively provided with a knife slot sliding strip 3022, the knife slot sliding strip 3022 is in sliding connection with the sliding groove 3012, the inside of the fixing groove 3011 is provided with an adjusting screw 304, the sliding position of the knife slot sliding strip 3022 in the sliding groove 3012 is adjusted by the adjusting screw 304, the rear part of the knife slot sliding piece 302 is provided with a knife slot front fixing surface 3023, the knife slot front fixing surface 3023 is parallel to the knife slot rear fixing surface 3013, the knife slot front fixing surface 3023, the knife slot rear fixing surface 3013 and the two knife slot sliding strips 3022 form a knife fixing groove 303, the width L of the knife fixing groove 303 is 0.2 +/-0.1 mm, the material of the corneal astigmatism release assistor stainless steel is made of titanium alloy, and has the characteristics of high strength, small density, good mechanical performance, and good toughness and corrosion resistance. With the structure, the knife slot sliding piece 302 is connected with the knife slot fixing piece 301 in a sliding way through the knife slot sliding strip 3022 and the sliding groove 3012, the sliding position of the knife slot sliding strip 3022 in the sliding groove 3012 can be adjusted through the adjusting screw 304, so that the width of the cutter fixing groove 303 can be adjusted, the exposed length of the blade edge of the side knife 4 placed in the cutter fixing groove 303 is changed, meanwhile, the sliding knife slot assembly 3 can slide along the outer ring sliding groove 102 of the outer fixing ring 1, and the side knife 4 finishes the operation of limbus loosening through the sliding of the sliding knife slot assembly 3. 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 303 is 0.2mm, the length of the upper end of the knife fixing groove 303 is 1.2mm, and the length of the lower end of the knife fixing groove 303 is 0.7mm, so that the blade exposure length of the side knife 4 inserted into the knife fixing groove 303 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 suitable for most patients, and can be widely popularized in the operation of limbus release.
In a specific embodiment, the lower surface of the outer fixing ring 1 is a conical surface, the included angle a between the lower surface of the outer fixing ring 1 and the horizontal plane is 30 degrees, the lower surface of the knife slot slider 302 is a conical surface, the included angle C between the lower surface of the knife slot slider 302 and the horizontal plane is 30 degrees, and the lower surface of the outer fixing ring 1 and the lower surface of the knife slot slider 302 are spherical surfaces of the same sphere. 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 rear cutter groove fixing surface 3013 and the horizontal plane is 60 degrees, the device is better attached to the edge of the corneosclera, the side cutter 4 is perpendicular to the surface of the cornea, and the depth and precision control of the operation are ensured.
And because the side surface of the outer ring of the outer fixing ring 1 is provided with the cutter groove adjusting opening 103, and the cutter groove adjusting opening 103 is communicated with the outer ring sliding groove 102, the design can facilitate the adjustment of the width of the cutter fixing groove 303, and further facilitate the adjustment of the exposed length of the cutting edge of the side cutter 4 after being inserted into the cutter fixing groove 303, so that the device can rapidly and accurately position different incision depths. Meanwhile, the design of the knife groove adjusting opening 103 facilitates the maintenance of the sliding knife groove group 3.
The invention provides a corneal astigmatism release assistor, the lower surface of an outer fixing ring of the device is an eye-imitating spherical surface, so that the device can stably contact with eyeballs, the structural design of an axis dial scale can accurately position an astigmatism axis and a corneal incision starting end, a sliding cutter groove component can slide and can stabilize the radian and depth of a corneal incision, and the device can ensure that the incision is regular, the shape is round, the depth is fixed, and 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 (10)
1. An auxiliary device for relaxing corneal astigmatism is characterized in that: the upper surface of the outer fixing ring is provided with an axis dial which comprises scale lines and angle scales, the middle part of the outer fixing ring is provided with an outer ring sliding groove, the outer ring side surface of the outer fixing ring is provided with a cutter groove adjusting opening, the cutter groove adjusting opening is communicated with the outer ring sliding groove, and an included angle is formed between the lower surface of the outer fixing ring and the horizontal plane;
the sliding knife groove assembly comprises a knife groove fixing piece and a knife groove sliding piece, the knife groove fixing piece is positioned in the outer ring sliding groove, the shape of the knife groove fixing piece is matched with that of the outer ring sliding groove, the knife groove fixing piece is connected with the outer ring sliding groove in a sliding mode, fixing grooves are formed in the outer surfaces of the left end and the right end of the knife groove fixing piece respectively, 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, and the operating handle is fixedly connected with the outer ring side surface of the outer fixing ring.
2. A corneal astigmatism release aid according to claim 1, wherein: the shape of the outer fixing ring is circular ring shape or semi-circular ring shape.
3. A corneal astigmatism release aid according to claim 1, wherein: the width of the axis position dial is 2 +/-0.1 mm, and the diameter of an inner ring of the axis position dial is 11 +/-0.5 mm.
4. A corneal astigmatism release aid according to claim 1, wherein: the lower surface of the outer fixing ring is in a conical surface shape, the included angle between the lower surface of the outer fixing ring and the horizontal plane is 30 degrees, the lower surface of the cutter groove sliding piece is in a conical surface shape, and the included angle between the lower surface of the cutter groove sliding piece and the horizontal plane is 30 degrees.
5. A corneal astigmatism release aid according to claim 1, wherein: the shape of the lower surface of the outer fixing ring is a spherical surface, the included angle between the tangential direction of the lower surface of the outer fixing ring and the horizontal plane is 30 degrees, the shape of the lower surface of the cutter groove sliding piece is a spherical surface, the included angle between the tangential direction of the lower surface of the cutter groove sliding piece and the horizontal plane is 30 degrees, and the lower surface of the outer fixing ring and the lower surface of the cutter groove sliding piece are spherical surfaces of the same sphere.
6. A corneal astigmatism release aid according to claim 1, wherein: the included angle between the rear fixed surface of the cutter groove and the horizontal plane is 60 degrees.
7. A corneal astigmatism release aid according to claim 1, wherein: the width of the cutter fixing groove is 0.2 +/-0.1 mm.
8. A corneal astigmatism release aid according to claim 7, 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 cutting edge exposes length to be 0.85mm behind the side-cutting sword 4 inserts the cutter fixed slot.
9. A corneal astigmatism release aid according to claim 1, wherein: the outer ring sliding groove is in a T-shaped sliding groove shape, the width of the T-shaped sliding groove is 0.8 +/-0.1 mm, the height of the T-shaped sliding groove is 3 +/-0.2 mm, and the width of an opening of the T-shaped sliding groove is 1 +/-0.1 mm.
10. A corneal astigmatism release aid according to any one of claims 1 to 9, wherein: the material of the corneal astigmatism release assistor is titanium alloy or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111174624.1A CN113749850B (en) | 2021-10-09 | 2021-10-09 | Cornea astigmatism loosening aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111174624.1A CN113749850B (en) | 2021-10-09 | 2021-10-09 | Cornea astigmatism loosening aid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113749850A true CN113749850A (en) | 2021-12-07 |
| CN113749850B CN113749850B (en) | 2023-09-22 |
Family
ID=78798868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111174624.1A Active CN113749850B (en) | 2021-10-09 | 2021-10-09 | Cornea astigmatism loosening aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113749850B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205682A (en) * | 1976-09-17 | 1980-06-03 | The University Of Melbourne | Contact lens corneal cutter |
| US4526171A (en) * | 1980-01-15 | 1985-07-02 | Schachar Ronald A | Cornea incision device |
| WO1995008955A1 (en) * | 1993-09-28 | 1995-04-06 | Feaster Fred T | Refractive surgery knife and process |
| US5441511A (en) * | 1990-04-12 | 1995-08-15 | Hanna; Khalil | Keratotome for performing arcuate incisions |
| US5545172A (en) * | 1994-06-07 | 1996-08-13 | Malvern Technologies, Inc. | Rocking foot plate for surgical knife |
| US5595570A (en) * | 1994-12-06 | 1997-01-21 | S.C.M.D., Ltd. | Keratome with spring loaded adjustable plate, cutting length adjustment plate, method of cutting a corneal flap, and gauge-mounted bracket for adjusting plate on keratome head |
| US20090287232A1 (en) * | 2008-05-13 | 2009-11-19 | Davis Andrew P | Universal Limbal Relaxing Incision Guide |
| GB201018984D0 (en) * | 2010-11-10 | 2010-12-22 | Central Manchester University Hospitals Nhs Foundation Trust | Toric axis marking tool |
| US20140277016A1 (en) * | 2013-03-15 | 2014-09-18 | Richard Jonathan Mackool | Toric axis marker |
| CN110801343A (en) * | 2019-11-12 | 2020-02-18 | 广东药科大学 | Corneal astigmatism correcting device |
| CN212165990U (en) * | 2020-04-01 | 2020-12-18 | 遂宁市中心医院 | Auxiliary tool and matched cutter for limbus loosening and incision |
| CN116531170A (en) * | 2023-05-23 | 2023-08-04 | 中国人民解放军陆军军医大学第一附属医院 | Cornea astigmatism positioning marking device |
-
2021
- 2021-10-09 CN CN202111174624.1A patent/CN113749850B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205682A (en) * | 1976-09-17 | 1980-06-03 | The University Of Melbourne | Contact lens corneal cutter |
| US4526171A (en) * | 1980-01-15 | 1985-07-02 | Schachar Ronald A | Cornea incision device |
| US5441511A (en) * | 1990-04-12 | 1995-08-15 | Hanna; Khalil | Keratotome for performing arcuate incisions |
| WO1995008955A1 (en) * | 1993-09-28 | 1995-04-06 | Feaster Fred T | Refractive surgery knife and process |
| US5545172A (en) * | 1994-06-07 | 1996-08-13 | Malvern Technologies, Inc. | Rocking foot plate for surgical knife |
| US5595570A (en) * | 1994-12-06 | 1997-01-21 | S.C.M.D., Ltd. | Keratome with spring loaded adjustable plate, cutting length adjustment plate, method of cutting a corneal flap, and gauge-mounted bracket for adjusting plate on keratome head |
| US20090287232A1 (en) * | 2008-05-13 | 2009-11-19 | Davis Andrew P | Universal Limbal Relaxing Incision Guide |
| GB201018984D0 (en) * | 2010-11-10 | 2010-12-22 | Central Manchester University Hospitals Nhs Foundation Trust | Toric axis marking tool |
| US20140277016A1 (en) * | 2013-03-15 | 2014-09-18 | Richard Jonathan Mackool | Toric axis marker |
| CN110801343A (en) * | 2019-11-12 | 2020-02-18 | 广东药科大学 | Corneal astigmatism correcting device |
| CN212165990U (en) * | 2020-04-01 | 2020-12-18 | 遂宁市中心医院 | Auxiliary tool and matched cutter for limbus loosening and incision |
| CN116531170A (en) * | 2023-05-23 | 2023-08-04 | 中国人民解放军陆军军医大学第一附属医院 | Cornea astigmatism positioning marking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113749850B (en) | 2023-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4429696A (en) | Surgical apparatus for precisely cutting out the cornea | |
| US5938674A (en) | Astigmatism reducing cutter | |
| US5342378A (en) | Sectioning device for lamellar surgery | |
| US4997437A (en) | Apparatus for the surgical correction of ametropia of one or both eyes of living beings | |
| US5441511A (en) | Keratotome for performing arcuate incisions | |
| US4552146A (en) | Disposable ophthalmic instrument for performing radial keratotomy on the cornea | |
| US5571124A (en) | Apparatus and method for performing surgery on the cornea of an eye | |
| US20180271704A1 (en) | Ophthalmic surgical device for cutting a circular incision | |
| US5690658A (en) | Keratorefractive system and method | |
| CN109620428A (en) | A kind of corneal astigmatism axle position marker with level meter | |
| US9011470B2 (en) | Toric axis marker | |
| US5545172A (en) | Rocking foot plate for surgical knife | |
| CN110801343A (en) | Corneal astigmatism correcting device | |
| CN215915233U (en) | Cutting device of corneal astigmatism release assistor | |
| US10080685B2 (en) | Trephine guide | |
| CN113749850A (en) | Auxiliary device for cornea astigmatism release | |
| CN111529083B (en) | Astigmatic axial position marker and marking method | |
| US5700274A (en) | Refractive surgery knife | |
| CN210843483U (en) | Corneal astigmatism axis marker, marking compass and marking system comprising same | |
| JP2002136540A (en) | Apparatus for transplanting cornea to eye of patient | |
| US20100217297A1 (en) | Surgical Knife Providing Enhanced Blade Visualization | |
| GB2485361A (en) | Ophthalmic marking tool | |
| CN211131674U (en) | Cornea marking tool of astigmatic intraocular lens | |
| CN220632350U (en) | Eye axial marker | |
| CN219000857U (en) | Hand-held astigmatism marking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |