KR20050123085A - Low friction bill - Google Patents

Abstract

The present invention relates to a low friction bill. The present invention is a low friction bill characterized in that the Teflon coating on the surface of the bill. And the material of the bill is characterized in that the acrylic resin (PMMA: Poly Methylmethacrylate). Therefore, in the present invention, by coating the low friction material between the orbit and the eye, the orbit is not injured and bacteria do not proliferate, eyeballs do not occur, and inflammation does not occur. And the eyes do not cling to the bill but are removed well. On the other hand, it is an invention having an excellent effect that the wearer does not feel a foreign body.

Description

Low friction bill {omitted}

Usually, a bill is a pseudo-eye which is worn for normal impression and beauty when one eye is injured in an eye disease or eyeball and recovery of visual function is impossible. Even though he is a child, he plays the role of an artistic eye ball that is necessary to lead a smooth social life without compromising the eyes of others without psychological lack.

In general, the bill is a kind of artificial eye to make a third person without disgust by wearing and wearing the eye of a person who has injured or innately lost one or both eyes in the shape of healthy eyes. The characteristics that can lead a pleasant daily life are required.

In addition, the bill is for people who have undergone ocular extraction surgery due to lesions or trauma to the eyes or the area around the eyes, those who are congenital or acquired, who have no vision due to atrophy or development of the eye, and who cannot expect to recover their vision. It is used to enhance the protection of the orbit, to maintain the formation of the orbit, to promote the development of the skeleton, and to make it look more beautiful than normal eyes in appearance.

The eyes consist of the horn, iris, lens, and optic nerve.

The cornea is a transparent avascular tissue at the outermost part of the eye, commonly called black pupil, and serves as a protective film to protect the eye and as a window to refract light and reach the retina.

The iris is located between the cornea and the lens and the color of the iris may be racial, individual and different. The pigment appears to be brown when there are many pigments and blue when there is little pigment, and serves as an aperture controlling the amount of light.

The lens is a colorless and transparent structure in the form of a magnifying glass with two convex sides, which is behind the iris and is the main refraction organ of the eye with the cornea.

When the eye is extracted from the eyes having such a structure, an implant (IMPLANT), which is an orbital filling, is inserted, and an ocular prosthesis is inserted into the conjunctival sac portion of the orbit where the cornea and iris are located. In case of developmental or poor development, only the eye is inserted into the conjunctival sac of the orbit.

In this way, the bill must be inserted into the conjunctival sac portion of the orbit and closely adhered to the eye. Therefore, the bill must be formed to correspond to the shape of the individual conjunctival sac portion, and the shape of the pupil must be the same as the real eye of a normal person. It should be formed as close as possible to the normal eye on the other side of the to improve the fit and minimize the appearance heterogeneity.

The general method for producing a bill is as follows.

First, a molding material is formed by injecting a molding material into the conjunctival sac of the orbit into which the bill is to be inserted using a bill-making apparatus, and the molding material is mainly used in forming dental teeth at the dentist (ALGINATE). Use the same kind as

The bill was prepared in the upper and lower flasks and buried to form the bill's sound shape, and then, the opaque resin material was injected and cured with high purity acrylic resin (PMMA: Poly Methylmethacrylate) to create a bill to be inserted into the orbit. do.

After the cutting process on the front of the bill, the eyes and white blood vessels are drawn by hand to match the shape and color of the eyes.

The eye (iris) is the most essential part of the bill, each individual has a unique feature, has a very sophisticated shape and color and is the main part that determines the impression of a person.

In addition, the present invention has been developed by the present applicant has an effect that can be used for a long time by forming a tear hole in the conjunctival portion of the bill because of the oxygen supply and tears smooth circulation than the bill without a hole.

However, all of these conventional bills caused friction between the orbits and the orbits, which resulted in bacterial proliferation due to bacterial proliferation and inflammation. And the eye clinging to the bill was not removed well. On the other hand, even if the orbit is not injured, the wearer feels foreign body by friction.

Therefore, the present invention aims to propose an invention that reduces the frictional force by surface treatment of the conventional bill and keeps the condition of the bill and orbit always in a sanitary good condition.

The present invention relates to a low friction bill.

The present invention is a low friction bill characterized in that the Teflon coating on the surface of the bill. And the material of the bill is characterized in that the acrylic resin (PMMA: Poly Methylmethacrylate).

One embodiment of making the subject matter of the present invention describes a mixed resin solution of the transparent resin or transparent acrylic resin (Clear Polymer) to a gel state at room temperature.

The mixing ratio is 10g of clear acrylic resin powder (Clear Polymer) and then mixed with 5g of a rapid resin solution.

The mixing ratio can be adjusted according to the condition or needs of the patient.

And acrylic resin powder can be used to select a transparent or opaque material as needed.

The gel mixture was put into a plaster mold, pressed, heated for 1 hour and 30 minutes between 71 ° C and 74 ° C, and then heated to 100 ° C for another 30 minutes to make a bill.

The Teflon coating solution is then sprayed onto the surface of the bill and heated for a period of time to form a stable coating layer.

If heating temperature is more than 60 ℃ and less than 100 ℃, 72 hours of heating time is appropriate. If heating temperature is more than 101 ℃ and less than 150 ℃, heating time is suitable 24 hours. If it is 151 degreeC or more and 200 degrees C or less, it heats about 2 hours, but it is preferable to avoid this temperature, since acrylic which is a raw material of a bill deforms.

This completed photo of the bill is shown in Photo 4. 1 is a hypothetical side view of a bill before insertion into the patient's eye. Figure 2 is a detailed view of the prior art as seen from the front. 3 is a conventional bill forming a tear hole. 4 is a photograph of a bill formed with a coating layer of the present invention.

In this case, the method of coating the Teflon on the bill is a method such as immersion type in addition to the spray method of the present embodiment.

The coating layer may be repeatedly formed several times. The dry film thickness of the Teflon coating layer is appropriate for at least 15 microns.

Teflon is a fluorine resin coating known as anti-friction material and has a low frictional force, thereby reducing the frictional force between the orbital portion and the ocular surface. And it is extremely easy to remove snowballs.

The main components of Teflon used in one embodiment of the present invention is polyamide imide polymer, Melamine resin, Tetrafluoroethylene resin, Formaldehyde, N-Butyl alcohol, Methyl isobutyl ketone, VM & P naphtha, Methyl pyrrolidone, Carbon black.

Of course, it includes similar ingredients and commonly used as a low friction coating material, also known as 'teflon'.

Teflon hardly sticks to everything. In the case of very adhesive materials, most of them are easily separated. The coefficient of friction of Teflon depends on the load, the sliding speed, and the type of Teflon coating used, but is generally between 0.05 and 0.2. It is enough.

Teflon-coated surfaces are easy to clean because they do not get wet with water or oil, and in many cases are automatically cleaned.

Teflon coating can be used continuously up to 290 ℃ and intermittently up to 315 ℃ under proper ventilation conditions.

Teflon has high insulation, low loss rate and high surface resistance over a wide range of frequencies. In addition, there is a coating for preventing static electricity by providing conductivity as a special technology. Teflon coatings do not lose their physical properties even at extremely low temperatures. Teflon is generally not affected by the chemical environment.

Therefore, the present invention by coating a low friction material between the orbit and the eye does not hurt the orbit does not proliferate bacteria, do not produce eyeballs and inflammation does not occur. And the eyes do not cling to the bill but are removed well. On the other hand, there is an excellent effect that the wearer does not feel foreign.

1 is a hypothetical side view of a bill before insertion into an eye of a patient.

Figure 2 is a detailed view of the conventional bill from the front

3 is a conventional bill forming a tear hole

Figure 4 is a photograph of the bill formed with a coating layer of the present invention

<Explanation of symbols for main parts of drawing>

10: Proposition 20: Conjunctival part

30: pupil part 40: iris part

50: hole

11: eye 12: orbital implant (implant)

13: septum 14: eyebrows

15 Proposition 16: Corneal

17: sclera 18: iris

19: blood vessel 21: Teflon coating layer

Claims (2)

In the bill, a low friction bill characterized in that the surface of the bill is Teflon coating The low friction bill according to claim 1, wherein the bill is made of acrylic resin (PMMA: Poly Methylmethacrylate).