KR102163101B1 - A method of processing brush for corneal epithelium removal - Google Patents

Abstract

The present invention relates to a method for processing a brush for removing the corneal epithelium, which is used for scraping a corneal epithelium during a LASEK operation which is a vision correcting and calibrating operation with high correction accuracy and high cornea recovery rate. According to the present invention, the method closely attaches a bundle of brushes on a spherical (circular) surface and applies proper pressure and vibration to form a curved shape of an eyeball shape to process a brush for a LASEK operation with an impurity-free uniform brush end surface. Moreover, one end of the brush comes in contact with a spherical surface of an eyeball model and the brush forcibly comes in contact with an opposite side, such that the same curvature shape as that of a spherical surface shape of the eyeball model can be acquired. The bundle of brushes acquiring constant curvature forms a bonding surface by welding to prevent the curvature shape from being collapsed and curvature correction is performed in a forcible contact type which is not mechanical curvature processing. Accordingly, the present invention provides a method for processing a brush for removing the corneal epithelium through a forcible compression and surface calibration processing technology including a small bundling process (S1) of brushes, a brush curvature processing process (S2), a brush shape keeping process (S3), a brush module and housing assembly step (S4).

Description

A method of processing brush for corneal epithelium removal}

The present invention relates to a brush processing method for removing corneal epithelium, and in particular, in a brush used to scrape the corneal epithelium layer in LASEK surgery with high correction accuracy, high corneal recovery rate, and less sequelae by surgery for vision correction and correction, The brush for removing the corneal epithelium that matches the curvature shape of the corneal surface is processed through the process of soda firing of the brush, the curvature of the brush, the process of maintaining the shape of the brush, the assembly process of the brush module and the housing, and pressure compression and surface correction. .

In general, modern people are vulnerable to changes in eye vision due to fine dust, prolonged use of TVs, smartphones and computers, and high school fever.

This vision change is a multifactorial disease on the surface of the eyeball that causes various symptoms such as visual discomfort, visual impairment, and wearing glasses, and eventually leads to the possibility of wearing glasses or correcting vision.If left untreated, continuous eye vision deterioration occurs. So in the end, there is a problem that requires surgery to correct vision.

In actual ophthalmology, there are mainly LASIK and LASEK surgical methods that correct myopia vision.

LASIK is a surgical method in which the upper part of the cornea is cut horizontally with a knife or laser to make a lid (corneal section), open the lid, and then cut the corneal parenchyma below it with a laser and cover the lid.

LASEK removes the corneal epithelium with alcohol or a brush (the corneal epithelium regrows after a few days) and covers the contact lens for temporary protection while the cornea is laser-cut and removed when the corneal epithelium grows again.

The problem with the alcohol LASEK surgery is: First, the pain is very severe when the treatment is performed on the corneal epithelium in which nociceptive cells are concentrated, and there is a painless LASEK that cools the procedure in relation to temperature to compensate for this, but the cornea is hardened. In the case where the recovery time is long and the amount of cutting due to poor vision is large, corneal clouding may occur during the recovery process, as well as dry eye syndrome.

Conventionally, as shown in FIGS. 1 and 2, myopia correction, which corrects vision by irradiating a laser beam to the cornea of the eyeball, has spread rapidly since its introduction in Korea in 1990, and more than 100,000 people are undergoing surgery every year.

These surgical methods can be broadly classified into LASIK and surface resection, and LASIK is a method of closing the corneal section again after making a thin flap by cutting the cornea, that is, cutting the cornea, resecting the cornea to correct vision. As shown in FIG. 2, the surface resection includes LASEK, which is a method of making a thin corneal section including the corneal epithelium, and a PRK (Photorefractive keratectomy) surgery without making a corneal section.

As shown in FIG. 3, in the lasec, the corneal epithelium is scraped off and the surface of the cornea is cut with a laser. As a method of scraping the corneal epithelial layer, a brush surgery method having a high recovery rate of the cornea after surgery is used.

In domestic ophthalmology hospitals, 10,000 to 30,000 myopia corrections are performed per month, of which, the surgical method by Lasec accounts for 80%, the method of scraping the corneal epithelium, 30% by brush, and 70 by alcohol. %to be.

Although the surgery cost of the brush surgery method is more expensive than the alcohol surgery method, the shape of the corneal epithelium is uniformly removed when the operation is performed by the brush surgery method in which the corneal epithelium is removed with a brush and laser irradiation on the corneal epithelium removal site as shown in FIG. The recovery rate of the cornea after surgery is high, and the brush surgery method is more commonly used because it has advantages such as shortening the operation time and increasing the accuracy of correction.

The current corneal epithelium removal brush is a processing method in which the surface is rotated using a sphere (a method of processing the surface by rotating the brush on a ball in the form of an eyeball jig), and foreign substances remaining after surface processing (brush powder, etc.) ) There is a problem of low corneal epithelial removal accuracy during brush surgery because the probability of occurrence is high and the spherical shape is not uniform.

The present invention is to solve such a conventional problem, and an object of the present invention is to apply pressure from one side of the brush to the spherical (circle) surface by using a surface correction processing technology by pressure-pressure compression and vibration, and the vibration is mixed up, down, left and right. It is possible to obtain the desired curvature shape required for surgery by uniformly adhering to the desired curvature surface by applying and, since it is not a mechanical surface processing method, foreign matter does not occur on the brush tip surface, and a uniform surface is secured to remove corneal epithelium during brush surgery. It is to provide a brush processing method for removing the corneal epithelium to increase the accuracy of

Another object of the present invention is to realize the low cost of products by avoiding expensive imported products through localization development, to improve the precision of brush curvature, and to achieve verification through clinical trials and to replace domestic imported products and to realize export sales. It is to provide a method of processing a brush for removal.

The present invention for achieving the above object is to process the curved surface of the eyeball shape by applying appropriate pressure and vibration by intimate contact with the bundle of brushes on the surface of the eyeball-shaped sphere (circle), and at the same time, bonding by heat fusion to the end surface of the brush. This is to process the brush of a uniform surface without foreign substances on the curved surface used during surgery by forming a surface, and through the soda firing process of the brush, the curvature processing process of the brush, the brush shape maintenance process, and the assembly process of the brush module and the housing. It is characterized by providing a brush processing method for removing the corneal epithelium that fits the shape of the curvature of the corneal surface by using pressure compression and surface correction processing technology.

According to the present invention as described above, pressure and vibration on one side of the brush according to the corneal curvature through the four-step processing process, i.e., the brush burning process, the curvature processing process of the brush, the brush shape maintenance process, the brush module and the housing assembly process. This is to process the surface of the brush on the other side into a curvature shape by applying the brush surface to the surface of the brush, so it does not generate foreign substances on the brush surface because it is not a direct mechanical polishing method, and improves the surface curvature accuracy to equal or higher than before There is an effect that can improve productivity by simplifying the process.

1 is a view for explaining the conventional myopia correction surgery principle
Figure 2 is a view for explaining the conventional LASEK surgical process
3 is a view showing a state of use of a conventional corneal epithelium removal brush
4 is a view showing a corneal epithelium removal site and a laser irradiation site by a conventional brush surgery method
5 is a schematic operation flow diagram of the present invention
6 is a view showing an example of a state in which the raw material of the present invention is cut into a plurality of circles with a laser cutting machine and a brush cut into a circle
7 is a cross-sectional view and a perspective view of the brush pin jig of the present invention, showing that the circular brush cut in FIG. 6 is inserted into the jig
8 is a view for explaining a process of vibrating up, down, left and right by inserting the brush pin jig of the present invention into the pin fixing block
9 is a diagram sequentially showing a process of completing a brush module by processing the brush of the present invention
10 is a real photograph and a cross-sectional view of the brush for removing the corneal epithelium of the present invention
11 is an operation flow diagram of another embodiment of the present invention
12 illustrates a brush soda ignition process and a brush curvature thermoforming process according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 to 10 are reference views for explaining the method of processing a brush for removing corneal epithelium according to the present invention.

5 shows the processing process of the present invention in order, which is performed in the order of brush soda process (S1), brush curvature processing process (S2), brush shape maintenance process (S3), and brush module and housing assembly process (S4). do.

FIG. 6 is a diagram showing a process of cutting a circular sub-unit material 10 cut into a predetermined size from the raw material of the present invention with a laser cutting machine from above to perform soda ignition with a plurality of circular brushes. ) Is cut with a laser cutting machine at the top of the free brush part 6a of the same size, and the upper surface of the free brush part 6a is temporarily fused by heat to form a temporary fusion surface 11.

7 shows a circular brush pin jig 1 of the present invention, a curvature round 3 is formed on the inner bottom of the brush pin jig 1, and the brush pin jig 1 is formed with a laser in FIG. Insert the circular brush free part 6a with the cut temporary fusion surface 11.

FIG. 8 shows a pin fixing block 2 for inserting the brush pin jig 1 one by one in a state in which the circular brush free portion 6a is inserted into the brush pin jig 1, and the pin fixing block ( 2) It shows that the brush to be processed inserted into the brush pin jig 1 is processed into a brush having a curved surface by the curvature round 3 while vibrating vertically and horizontally by the mechanical configuration of this motor and cylinder.

9 is a hot plate by applying heat while in close contact with the upper surface of the brush contained in the brush pin jig 1 at a constant force and at a constant speed with the curved surface 8 already formed on the surface of the curvature round 3 in FIG. By thermal fusion with (7), the brush adhesive fixing part 6b and the brush free part 6a are formed while the lower surface of the brush maintains the curved surface 8, and the curved surface 8 is formed on the brush free part 6a. It shows a state in which one brush module 6 is completed by forming.

10 is a view showing a state in which the brush module 6 processed according to the present invention is assembled to the housing 4 and completed with a LASEK surgical brush 9, wherein the brush module 6 is an adhesive bonded at the bottom. It is divided into a top (6b) and a brush free portion (6a) at the top, the diameter of the adhesive fixing portion (6b) is 15 mm or less, and the diameter of the brush free portion (6a) is preferably 20 mm or less.

Hereinafter, a processing process of the brush for removing the corneal epithelium according to the present invention will be described as follows.

First, a soda firing process (S1) of the brush is performed.

In the soda firing process (S1) of the brush, a raw material having a length of 115 cm and a constant diameter (diameter 50-100 mm) is cut in sub-units at a predetermined length (about 5-20 mm), and one side thereof is thermally fused with a hot plate.

Then, the cut sub-unit material 10 is cut into a plurality of pieces in a circle of a predetermined size as shown in FIG. 6 using a laser.

That is, the cut sub-unit material 10 is designed to have the best elasticity and polishing ability by maximizing the number of brush strands, and performs brush soda processing. The diameter of the brush adhesive fixing part 6b is within 15 mm, and the corneal epithelium The diameter of the brush free part 6a, which is a part to remove, is 20 mm or less in order to remove the corneal epithelium of an appropriate size.

In this brush soda firing process, before curvature processing of the brush surface, a diameter (Φ) 6.5 mm is inserted into the processing frame for each brush bundle unit, and the brush bundle is set in advance to facilitate processing.

Second, the curvature processing process (S2) of the brush is performed.

By the S1 process, a plurality of circularly cut brushes from the sub-unit material 10 are put into the brush pin jig 1, and these brush pin jigs 1 are sequentially inserted into the grooves of the pin fixing block 2 as shown in FIG. Put in (5).

At this time, the brush cut in a circular shape in the step S1 is inserted into the circular brush pin jig 1 as it is, and then the brush bundle part (consisting of a brush bundle by heat fusion) made in the brush soda firing process (S1) is cut.

And in order to create curvature, when the pin fixing block 2 is moved by vibrating vertically and horizontally by driving a cylinder, etc. while in close contact with a curved surface having the same curvature shape as the lower surface of the brush, the lower surface of the cut brush is rounded. (3) It is closely aligned with the surface.

That is, the brush portion in contact with the curvature round 3 formed on the inner bottom surface of the pin jig 1 is formed to have a curvature along the surface shape of the curvature round 3 by vertical and horizontal vibration.

Here, the average curvature is set by measuring the corneal curvature radius, and the processing technology is developed to minimize the brush curvature shape and curvature deviation corresponding thereto, and the removal rate of corneal epithelial cells and the safety of the cornea are confirmed through clinical trials later. It is desirable to verify the superiority and equality compared to existing products.

Third, the bundle brush shape maintenance process (S3) is performed.

In the process of maintaining the shape of the bundle brush (S3), the hot plate 7 descends from the top as shown in FIG. 9 in a state in which one side of the brush is processed to have a curved surface 8 by the brush pin jig 1 to heat the top end of the brush. Therefore, to form the adhesive fixing portion (6b) on the top.

Accordingly, one brush module 6 is formed with a curved surface 8 formed on one side of the brush free portion 6a and an adhesive fixing portion 6b formed on the other side of the brush.

Fourth, the assembly process (S4) of the brush module 6 and the housing 4 is performed.

In the assembly process of the brush module 6 and the housing 4, when the adhesive is attached to the adhesive fixing portion 6b of the brush module 6 and inserted into the plastic circular housing 4, as shown in FIG. The corneal epithelium of the eyeball can be removed by using the brush module 6 having a curved surface 8 on the outside while the brush module 6 having the adhesive fixing part 6b is firmly fixed to the housing 4 .

At this time, it is necessary to improve the fitting precision of the brush module 6 and the housing 4, and when assembling the adhesive fixing part 6b of the brush module 6 to the housing 4, the radius of curvature and the corneal epithelium removal part While the outer diameter of the curved surface 8 is maintained, it must be precisely fitted.

On the other hand, the brush surface curvature processing technology according to the present invention minimizes curvature deviation by applying pressure and vibration to a jig surface having the same shape as the corneal curvature by applying pressure and vibration from one side and making the brush surface curvature shape.

In the present invention, it is preferable to make the diameter of the adhesive fixing part 6b of the brush module 6 up to 15 mm or less, and the diameter of the brush free part 6a of the brush module 6 up to 20 mm or less, which is a clinical trial for brush performance. The test confirmed the corneal cutting surface uniformity through the pig eye.

That is, the brush surface curvature processing according to the present invention is a method of forming a surface curvature by applying vibration and pressure from one side of the brush to the spherical (circle) surface at the same time to uniformly adhere the surface to the jig, so that foreign matter does not occur on the brush tip Without, it is possible to ensure a uniform curvature surface shape.

As a result, the brush 9 for Lasec surgery of the present invention processed by the above process has a thick cornea and uses a fine and soft brush free part 6a, so it is less irritating and less painful, and is resistant to physical shock, and alcohol It has less stimulation than

On the other hand, Figures 11 and 12 are other embodiments of the present invention, omitting the curvature processing step (S2) and the brush shape maintenance step (S3) in the above-described embodiment, and brush soda firing step (S1)-brush curvature Thermal formation process (S12)-brush module and housing assembly process (S3) is carried out in three steps.

The steps S1 and S3 are the same as those of the above-described embodiment, and in the brush curvature thermal forming step (S12), one surface of the brush free portion 6a having the temporary fusion surface 11 obtained in the soda firing step is curved ( 13) The temporary welding surface 11 formed in the cutting process of the S1 process, which is the other side of the brush free part 6a while being inserted into the jig 1 while being in close contact with the upper surface 12 of the formed brush pin, has a curvature shape. The curved surface (13) with a certain force is pushed into contact while forcibly applying thermal deformation to form the curved surface (8a).

That is, when heat (temperature at which heat deformation is possible on the currently fused surface) is applied to the jig curved surface 13 formed on the jig upper surface 12 and pressed with a certain pressure, the lower surface of the free brush part 6a is While in close contact with the lower curvature round 3, the upper curvature heat deformed part is also formed with the same curvature, and the brush module 6 having curved surfaces 8a and 8 formed on the upper and lower surfaces is processed.

In such a state, if the brush module 6 is inserted into the housing 4 and adhered and fixed, it is completed as a brush for LASEK surgery.

1: Brush pin jig 2: Pin fixing block
3: Curvature round 4: Housing
5: Groove 6: Brush module
6a: free brush part 6b: adhesive fixing part
7: hot plate 8,8a: curved surface
9: Lasec surgical brush 10: Sub-unit material
11: Temporary fusion surface 12: Jig top surface
13: Jig curved surface

Claims (3)

The first process, which is a soda ignition process, in which raw materials are cut at regular length intervals, and a plurality of subunit materials cut to a predetermined length are processed with a laser cutting machine from above with a circular brush of the same size,
Touch one end of the brush to the brush pin jig and forcefully push the brush from the other side. While inserting the brush pin jig one by one into the pin fixing block, hold the brush pin jig in close contact with the curved surface with a certain force and at a constant speed, The second process, which is a brush curvature processing process, in which the brush has the same curvature as the spherical surface shape of the eyeball model by vibrating left and right,
A third process, which is a brush shape maintenance process, in which the curvature shape is maintained without collapsing since the other side of the bundle brush with a curved surface is thermally fused with a hot plate to form an adhesive fixing portion,
Mechanical curvature is performed by attaching an adhesive to the adhesive fixing portion of the brush module obtained by the third process, inserting and fixing it into the housing, and processing the LASEK surgical brush by making the curved brush part protrude outside the housing. Corneal epithelium removal brush processing method, characterized in that the brush is completed with a curvature correction technology of a forced contact method rather than processing. delete The first process, which is a soda ignition process, in which raw materials are cut at regular length intervals, and a plurality of subunit materials cut to a predetermined length are processed with a laser cutting machine from above with a circular brush of the same size,
While inserting one side of the soda ignition brush obtained in the soda ignition process in close contact with the curvature-formed brush pin jig, the other side of the brush is pushed into contact with a curved surface having a curvature shape with a certain force, while forcibly heating the jig surface A second process, which is a curvature heat forming process, in which a brush module having a curvature formed on the upper and lower surfaces of the brush is processed,
Mechanical curvature processing by performing a third process of processing the Lasek surgical brush by attaching an adhesive to the bonding surface of the brush module obtained by the second process, inserting and fixing it into the housing, and making the curved brush part protrude outside the housing. Brush processing method for corneal epithelium removal, characterized in that the brush is completed with a curvature correction technology of a forced contact method.

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