KR20190117257A - Tympanostomy stent and method for manufacturing the tympanostomy stent - Google Patents

Abstract

The present invention relates to a tympanstomy tube and a method for manufacturing the tympanstomy tube. The tympanstomy tube is inserted into a tympanum hole and makes a fluid flow in and out of the tympanum. The tympanstomy tube is in a coil spring form, thereby being easily processed, deformed and restored with respect to an external force and installed on a tympanstomy procedure device.

Description

TYMPANOSTOMY STENT AND METHOD FOR MANUFACTURING THE TYMPANOSTOMY STENT}

The present invention relates to a tympanic perforated tube and a method for manufacturing the tympanic perforated tube, and more particularly, to a perforated perforated tube and a method for manufacturing the tympanic perforated tube used for the treatment of otitis media by inserting a perforated hole in the tympanic membrane. .

Otitis media (otitis media) refers to all inflammations occurring in the middle ear and is one of the most common bacterial infections in children.

It is known that otitis media is more likely to occur after 6 months of age and most frequently occurs at the age of 2 years. Three out of four children are known to have otitis media more than once before the age of 3 years.

Acute otitis media is a otitis media with acute inflammation within 3 weeks. It is accompanied by symptoms such as pain and fever of the ear. Exudative otitis media is a liquid secreted from the mucous membrane of the middle ear, which is the inner space of the middle ear, without symptoms of acute inflammation. Say the disease. Exudative otitis media is a condition in which acute inflammation disappears after acute otitis media and only exudates remain in the middle ear cavity. Otitis is generally blocked by swollen cold, allergies, etc. of the eustachian tube causes negative pressure to form inside the middle ear cavity, resulting in effusion from the surroundings.

Such otitis media is often treated with drugs such as antibiotics, and when the pain is reduced or a bacteriological test is performed, a perforation is made in the tympanic puncture or tympanic membrane that directly extracts the effusion in the middle ear with a syringe to allow the effusion to drain naturally. It can also be treated by a tympanic incision.

Such otitis media can be prevented by various medical or surgical methods. As an example, if you repeatedly suffer from acute otitis media or have deafness due to chronic exudative otitis media, tympanostomy may be performed, which involves inserting a ventilating tube into the eardrum to help ventilate and ventilate the middle ear and reduce the incidence of acute otitis media and exudative otitis media. have.

Inserting the ventilator into the eardrum as described above, the discharge and ventilation of the middle ear reduces the possibility of otitis media and the hearing loss caused by the effusion solution, the speech and balance disorders caused by chronic exudative otitis media are resolved, behavioral disorders and sleep Disability can also be improved.

Typically, tympanostomy may be performed by performing a myringotomy to form an incision in the tympanic membrane, inserting a tube into the incision and inhaling the exudate from the middle ear through the tube with a suction device, Recently, a system for continuously performing tympanostomy and ventilator insertion by a single system has been proposed.

On the other hand, the tympanic perforated tube shown in the Republic of Korea Patent No. 10-1685966 filed and registered by the present applicant, to prevent separation from the tympanum by the characteristics of the shape and to suppress the growth of bacteria, but the form is complicated This is difficult to process and requires a post-treatment process to form a flange, there was a problem that the production efficiency is lowered. In addition, there was also a problem that the connection portion of the flange is easily broken. Furthermore, there was a problem in that it was inconvenient to attach to the treatment apparatus because of its complicated shape.

Republic of Korea Patent No. 10-1685966

Accordingly, an object of the present invention is to solve such a conventional problem, it is made in the form of a coil spring is easy to process and not easily damaged by external force and easy to install in the surgical device tympanic perforated tube and the tympanic perforated tube To provide a method of making.

Problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to the present invention, according to the present invention, in the tympanic perforated tube to allow fluid to flow between the inside and the tympanic membrane into the tympanic perforation, the tympanic perforated tube is formed by a tympanic perforated tube, characterized in that the coil spring form. Can be achieved.

Here, the pitch of the coil may be formed to be zero in the body portion located in the middle of the coil spring and in contact with the eardrum perforation.

Here, the radius of the coil may be gradually increased from both ends of the body portion toward the end of the coil spring.

Here, the pitch of the coil may be formed between the both ends of the body portion and the end of the coil spring is not zero.

In addition, according to the present invention, in the tympanic perforated tube to allow fluid to flow between the inside and the tympanic membrane is inserted into the perforated tympanic membrane, the coil spring is formed in the form of a coil spring; And a tympanic perforated tube which is inserted into the coil spring portion and is located in the middle and comprises a pipe-shaped body portion in contact with the tympanic perforation.

Here, the coil spring portion may be formed such that the radius of the coil gradually increases from both ends of the body portion toward the end of the coil spring portion.

Here, the coil spring portion may be formed so that the pitch of the coil is not zero between both ends of the body portion and the end of the coil spring portion.

In addition, the above object, according to the present invention, the tympanic perforation tube is inserted into the tympanic perforation to allow fluid to flow between the inside and outside the tympanic membrane, the pipe-shaped body portion in contact with the tympanic perforation; And a coil spring portion extending from both ends of the body portion and including a coil spring portion formed in the form of a coil spring.

Here, the coil spring portion may be formed such that the radius of the coil gradually increases from both ends of the body portion toward the end of the coil spring portion.

Here, the coil spring portion may be formed so that the pitch of the coil is not zero between both ends of the body portion and the end of the coil spring portion.

Here, the eardrum perforated tube may be formed of a shape memory alloy.

In addition, the above object is, according to the present invention, in the method of manufacturing a perforated tympanic tube made of a shape memory alloy to insert the fluid into the perforated membrane to allow fluid to flow between the inside and outside of the tympanic membrane, the middle portion of the coil pitch is 0 and both ends are Preparing a coil spring formed such that a radius of the coil gradually increases toward the end; And it can be achieved by a method of manufacturing a high-permeable perforated tube comprising the step of heat treatment to remember the shape of the coil spring.

Here, the method may further include coating a biocompatible material that prevents the growth of bacteria on the surface of the tympanic perforation tube.

In addition, the object is, according to the present invention, a method for manufacturing a perforated tube into a tympanic cavity to allow fluid to flow between the inside and outside of the tympanic membrane, comprising the steps of: preparing a coil spring; Inserting the coil spring into a five-shaped body portion to position the body portion in the middle of the coil spring; Deforming the both ends of the coil spring exposed to the outside of the body portion so that the radius of the coil gradually increases toward the end; And it can be achieved by a method of manufacturing a high-permeable perforated tube comprising the step of heat treatment to remember the shape of the coil spring.

Here, the method may further include coating a biocompatible material that prevents the growth of bacteria on the surface of the tympanic perforation tube.

In addition, the object is, according to the present invention, a method for producing a perforated membrane into the tympanic cavity to allow the fluid to flow between the inside and outside of the tympanic membrane, the method of producing a shape memory alloy, comprising the steps of preparing a pipe tube; Laser processing both ends of the pipe in the form of a coil; Deforming so as to gradually increase the radius of the coil toward both ends of the coil form; And a heat treatment to memorize the coil shape.

Here, the method may further include coating a biocompatible material that prevents the growth of bacteria on the surface of the tympanic perforation tube.

According to the manufacturing method of the tympanic perforated tube and the tympanic perforated tube of the present invention as described above has the advantage of easy processing because it is manufactured in the form of a coil spring using a shape memory alloy or metal coil raw wire of one strand.

In addition, even if an external force is applied to the high-permeable perforated tube manufactured in the form of a coil spring, since the external force can be efficiently distributed by the geometrical feature, it is not easily deformed or damaged.

In addition, there is an advantage that can be easily mounted on the surgical device of the tympanoscopy.

1 is a perspective view of a tympanic perforation tube according to an embodiment of the present invention.
Figure 2 shows the procedure of the tympanostomy tube of Figure 1.
3 shows the tympanostomy tube inserted into the tympanic membrane.
4 is a view showing a method for manufacturing the eardrum perforated tube shown in FIG.
5 is a perspective view of the tympanic perforation tube according to another embodiment of the present invention.
Figure 6 shows the procedure of the tympanostomy tube of Figure 5.
FIG. 7 is a view illustrating a method of manufacturing the eardrum perforated tube illustrated in FIG. 5.
8 is a perspective view of the tympanic perforation tube according to another embodiment of the present invention.
FIG. 9 illustrates the procedure of tympanostomy tube of FIG. 8.
FIG. 10 is a view illustrating a method of manufacturing the eardrum perforated tube shown in FIG. 8.

Details of the embodiments are included in the detailed description and drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, the present invention will be described with reference to the drawings for explaining the eardrum perforation tube and the manufacturing method of the tympanic cavity by the embodiments of the present invention.

Prior to the description of the characteristics of the perforated perforated tube according to the present invention, the perforated perforated tube according to the present invention forms a perforation in the tympanic membrane and is inserted into the perforated tube-type device, or discharge the effusion fluid, etc. filled in the middle ear to the outer ear or It is a device that can be used to treat otitis media by allowing equalization of pressure through ventilation between the middle ear and inner ear.

1 is a perspective view of a tympanic perforation tube according to an embodiment of the present invention, FIG. 2 shows a procedure of the tympanic perforation tube of FIG. 1, FIG. 3 shows a tympanic perforation tube inserted into the tympanum, and FIG. 4. FIG. 1 is a view illustrating a method of manufacturing the eardrum perforated tube shown in FIG. 1.

The tympanic membrane 100 according to an embodiment of the present invention is characterized in that it is formed in the form of a coil spring as shown in FIG.

At this time, the total length formed by the coil spring may vary depending on the use of the tympanic perforation tube 100 or the location of the procedure, and may be 0.5 mm to 8 mm, preferably 1 mm to 4 mm, and more preferably 1.5. It may be mm to 2.5mm, but is not limited thereto.

At this time, the middle portion of the coil spring forms a body portion 120, the body portion 120 means a portion having a predetermined width including a portion which is inserted into the perforation of the eardrum and directly contact with the eardrum. At this time, the body portion 120 is such that the pitch between each winding of the coil to 0 to facilitate the insertion and fixing in the perforation of the eardrum, it is preferable to form a closed tube form connecting the inside and outside of the eardrum.

At this time, the diameter of the body portion 120 may vary depending on the use of the tympanic perforation pipe 100 or the location of the procedure. The diameter of the body portion 120 may be 1mm to 4mm, preferably 1.5mm to 3.5mm, more preferably 2mm to 3mm, but is not limited thereto.

At this time, the shape between the ends of the coil spring at both ends of the body portion 120 located in the middle is the radius of the coil gradually increases from both ends of the body portion 120 to the end of the coil spring as shown in FIG. It is preferably formed so that. Furthermore, the pitch between the windings of the coil spring is preferably formed to have a constant interval, not zero, and gradually increases from the both ends of the body portion 120 toward the end of the coil spring, unlike the body portion 120.

In this way, by changing the radius and pitch of both ends of the coil spring is easy to deform the shape when inserting and removing the tympanic perforation tube 100 in the eardrum perforation, and furthermore to the shape characteristics of both ends formed to gradually increase the radius of the coil As a result, the tympanic perforation tube 100 inserted into the tympanic membrane can be prevented from being easily detached and lost from the tympanic membrane. The description thereof will be described later with reference to FIG. 2.

The tympanic perforated tube 100 according to the present invention is easy to deform and recover due to its elasticity of the coil spring and the features of the coil spring described above with reference to FIG. 1, and in particular as a shape memory alloy. In the case of manufacturing as described above, shape deformation and recovery may be easier.

In addition, by coating a biocompatible material that prevents the growth of bacteria on the surface of the tympanic perforation tube 100, side effects in the treatment process can be minimized. At this time, it is preferable to form a titanium coating layer on the surface of the perforated tube 100 and to form a titanium dioxide coating layer on the titanium coating layer again. Since the titanium dioxide coating layer has an antimicrobial effect of inhibiting bacteria (biofilm), it can prevent the overuse of antibiotics caused by bacteria.

Next, with reference to Figure 2 will be described the process of mounting the tympanic cavity 100 in the eardrum according to an embodiment of the present invention.

First, the tympanic perforation tube 100 described above is used to form a perforation at the same time using the tympanic perforation treatment apparatus 10 disclosed in the Republic of Korea Patent No. 10-1809258 filed and registered by the applicant of the present invention Although it is possible to insert the punched tube 100, since the configuration and operation of such a surgical device 10 is disclosed in detail in the registered patent, a detailed description thereof will be omitted.

Figure 2 (a) shows the shape of the tympanic perforation tube 100 before insertion into the tympanic membrane, if the external force is not applied to the tympanic perforation tube 100 will maintain the shape as shown in (a) of FIG. .

Next, FIG. 2 (b) shows a form in which the tympanic perforation tube 100 of FIG. 2 (a) is inserted into the tympanoscopy operation apparatus 10, according to the shape of the inner diameter of the surgical apparatus 10. Receiving the tympanic perforated tube 100, as shown in Figure 2 (b), both ends of the coil spring may be elastically deformed and maintained in a straight form. As described above, by inserting the surgical device 10 into the ear while the tympanic perforation tube 100 according to the embodiment of the present invention is inserted into the surgical device 10 by a sharp blade formed at the front end of the surgical device 10. The eardrum is cut to form a perforation in the eardrum, and the body 120 of the eardrum perforator 100 is positioned in the eardrum. At this time, by retreating the surgical device 10 again to expose the front end and the rear end of the tympanic perforation tube 100 in turn, the front end and the rear end are elastically restored again in turn and are caught in the inner and outer sides of the tympanum. In this way, by using the elastic deformation of both ends of the coil spring can be inserted and fixed to the tympanic cavity 100 to the tympanic membrane while minimizing the incision of the tympanic membrane.

In the present embodiment, the tympanic perforation tube 100 is inserted into the incision site at the same time as the incision of the tympanic membrane using the surgical device 10. The tympanic perforation tube is cut with a separate knife and tweezers, etc. Of course, it can be picked up and inserted into the eardrum.

For reference, Figure 3 shows the appearance of the eardrum perforated tube 100 according to an embodiment of the present invention in the actual eardrum, it can be prevented from easily separated from the tympanic membrane by both ends of the tympanic cavity 100. I can confirm that there is.

Next, a method of manufacturing a tympanic cavity 100 according to an embodiment of the present invention shown in FIG. 1 will be described with reference to FIG. 4.

First, as shown in FIG. 1, the intermediate part prepares a coil spring formed such that the pitch of the coil is 0 and both ends gradually increase in radius of the coil toward the end. This can be prepared by a method of deforming the shape of both ends as shown in FIG. 4B with respect to a general coil spring having a constant coil radius as shown in FIG. Alternatively, the winding may be directly wound to have a shape as shown in FIG. 4 (b).

At this time, it is preferable that the pitch of both ends with the change of the radius is also not zero or gradually increased.

Next, heat treatment for shape memory is performed on the coil spring prepared in the shape as shown in FIG. Therefore, even if a change occurs in the shape of the tympanic cavity 100 during the procedure of the tympanic cavity 100 in the eardrum, the tympanic cavity 100 is easily removed from the tympanic membrane by both ends. Departure can be prevented.

Next, the method may further include coating a biocompatible material that prevents the growth of bacteria on the surface of the tympanic perforation tube 100.

Hereinafter, the eardrum perforated tube according to another embodiment of the present invention will be described with reference to FIGS. 5 to 7.

Figure 5 is a perspective view of the tympanic perforation tube according to another embodiment of the present invention, Figure 6 shows the procedure of the tympanic perforation tube of Figure 5, Figure 7 is a manufacturing method of the tympanic perforation tube shown in Figure 5 It is a figure which shows.

In the description of the present embodiment will be described with a focus on the difference compared to the above-described embodiment.

The tympanic perforation tube 200 according to another embodiment of the present invention may be formed to include a coil spring 210 and a body 220.

In this embodiment, there is a difference in that the pipe body portion 220 is inserted into the middle portion of the coil spring portion 210 formed in the coil spring form compared to the above-described embodiment. Also in this embodiment, the shape of the coil spring exposed to both ends of the body portion 220 is formed such that the radius of the coil gradually increases from both ends of the body portion 220 toward the end of the coil spring, as shown in FIG. Furthermore, the pitch between the windings of the coil spring may be formed to have a constant interval not zero or to increase gradually from both ends of the body portion 220 toward the end of the coil spring.

In the above-described embodiment, the pipe form is formed by setting the pitch of the coil forming the body portion 120 to 0, but in the present embodiment, since the pipe-shaped body portion 220 is separately inserted into the outer circumferential surface of the middle of the coil spring, It is not necessary to form the pitch of the coil to zero in the middle of the coil spring portion 210. At this time, in the embodiment, the pipe-shaped body portion 220 is inserted into the tympanic membrane to form a sealed tube connecting the inside and outside of the tympanic membrane.

The size, material, etc. of the tympanic perforation pipe 200 are the same as the above-described embodiments, and description thereof will be omitted.

Furthermore, FIG. 6 shows a procedure using the tympanic perforation tube 200 of FIG. 5, which is the same as the embodiment described above with reference to FIG. 2, and thus a detailed description thereof will be omitted.

Next, a method of manufacturing the tympanic cavity 200 according to another embodiment of the present invention shown in FIG. 5 will be described with reference to FIG. 7.

First, as shown in FIG. 7A, a coil spring having a general shape having a constant coil radius is prepared.

Next, as shown in (b) of FIG. 7, the coil spring is inserted into the pipe body 220, and the body 220 is positioned at the middle of the coil spring.

Next, as shown in (c) of FIG. 7, both ends of the coil spring exposed to the outside of the body portion 220 are deformed so that the radius of the coil increases toward the ends.

At this time, it is preferable that the pitch of both ends with the change of the radius is also not zero or gradually increased.

Next, as shown in Fig. 7D, heat treatment is performed for shape memory. Therefore, even if a change occurs in the shape of the tympanic cavity 200 in the process of performing the tympanic cavity 200 on the eardrum, the tympanic cavity 200 is easily removed from the tympanic membrane by both ends. Departure can be prevented.

Next, the method may further include coating a biocompatible material that prevents the growth of bacteria on the surface of the tympanic perforation tube 200.

Hereinafter, the eardrum perforated tube according to another embodiment of the present invention will be described with reference to FIGS. 8 to 10.

8 is a perspective view of the tympanic perforation tube according to another embodiment of the present invention, FIG. 9 shows a procedure of the tympanic perforation tube of FIG. 8, and FIG. 10 is a manufacturing method of the tympanic perforation tube shown in FIG. 8. It is a figure which shows.

In the description of the present embodiment, a difference will be described with reference to FIGS. 1 to 7 compared with the above-described two embodiments.

The tympanic perforation tube 300 according to another embodiment of the present invention may be formed including a body 320 and a coil spring 310.

In this embodiment, there is a difference in that the coil spring portion 310 extending in the form of a coil spring on both ends of the body portion 320 of the pipe form is formed.

Also in this embodiment, the shape of the coil spring 310 located at both ends of the body 320 is as shown in Figure 8 from the both ends of the body 320 to the end of the coil spring portion 310 of the coil The radius is formed to gradually increase, and furthermore, the pitch between the windings of the coil spring portion 310 has a constant interval not equal to zero or gradually increases from both ends of the body portion 320 toward the end of the coil spring portion 310. Can be formed.

Similar to the embodiment described with reference to FIG. 5, in this embodiment, the pipe-shaped body part 320 is inserted into the tympanic membrane to form a sealed tube connecting the inside and the outside of the tympanic membrane.

In this embodiment, the size, material, etc. of the tympanic perforation pipe 300 are the same as the above-described embodiment with reference to FIGS. 1 to 3, and description thereof will be omitted.

Furthermore, FIG. 9 shows a procedure using the tympanic perforation tube 300 of FIG. 8, which is the same as the embodiment described above with reference to FIG. 2, and a detailed description thereof will be omitted.

Next, a method for manufacturing the tympanic cavity 300 according to another embodiment of the present invention shown in FIG. 8 will be described with reference to FIG. 10.

First, as shown in (a) of FIG. 10, a pipe tube in which a hollow is formed is prepared.

Next, as shown in (b) of FIG. 10, both ends of the body portion 320 are manufactured in the form of a coil through laser processing with a pipe-shaped body portion 320 disposed in the middle.

Next, as shown in (c) of FIG. 10, both ends formed in the form of a coil are deformed so that the radius of the coil becomes larger toward each end.

At this time, it is preferable to prepare so that the pitch of both ends with a change in the radius is also not zero or gradually increases.

Next, as shown in Fig. 10 (d), heat treatment for shape memory is performed. Therefore, even if a change occurs in the shape of the tympanic cavity 300 in the process of performing the tympanic cavity 300 in the eardrum, the eardrum perforated tube 300 is easily removed from the tympanic membrane by both ends. Departure can be prevented.

Next, the method may further include coating a biocompatible material that prevents the growth of bacteria on the surface of the tympanic perforation tube 300.

In addition to the manufacturing method of FIG. 10, a method of manufacturing the coil spring 320 separately and directly welding the body 320 may also be considered, but in addition to the manufacturing method described above with reference to FIG. The disadvantage is that the process cost increases.

The scope of the present invention is not limited to the above-described embodiment, but may be embodied in various forms of embodiments within the scope of the appended claims. Without departing from the gist of the invention claimed in the claims, it is intended that any person skilled in the art to which the present invention pertains falls within the scope of the claims described in the present invention to various extents which can be modified.

10: treatment device
100: eardrum perforated tube
120: body
200: eardrum perforated tube
210: coil spring part
220: body portion
300: eardrum perforated tube
310: coil spring part
320: body

Claims (15)

In a tympanic perforation tube inserted into the tympanic cavity to allow fluid to flow between the interior and exterior of the tympanic membrane.
The eardrum perforated tube is a tympanic perforated tube, characterized in that formed in the form of a coil spring. The method of claim 1,
The tympanic perforated tube which is located in the middle of the coil spring and the body portion in contact with the perforated eardrum is formed with a pitch of the coil to zero. The method of claim 2,
A tympanic perforated tube is formed so that the radius of the coil gradually increases from both ends of the body portion to the end of the coil spring. The method of claim 3, wherein
A high-permeability perforated tube formed between the both ends of the body portion and the end of the coil spring so that the pitch of the coil is not zero. In a tympanic perforation tube inserted into the tympanic cavity to allow fluid to flow between the interior and exterior of the tympanic membrane.
A coil spring portion formed in the form of a coil spring; And
The tympanic perforated tube which is inserted into the coil spring portion and comprises a body portion of the pipe form located in the middle portion and contact with the perforated eardrum. The method of claim 5,
The coil spring portion is tympanic perforated tube formed so that the radius of the coil gradually increases from both ends of the body portion to the end of the coil spring portion. The method of claim 6,
The coil spring portion of the tympanic perforated tube is formed between the both ends of the body portion and the end of the coil spring portion so that the pitch of the coil is not zero. In a tympanic perforation tube inserted into the tympanic cavity to allow fluid to flow between the interior and exterior of the tympanic membrane.
A body in the form of a pipe in contact with the eardrum perforation;
A tympanic perforated tube extending from both ends of the body portion and including a coil spring portion formed in a coil spring shape. The method of claim 8,
The coil spring portion is tympanic perforated tube formed so that the radius of the coil gradually increases from both ends of the body portion to the end of the coil spring portion. The method of claim 9,
The coil spring portion of the tympanic perforated tube is formed between the both ends of the body portion and the end of the coil spring portion so that the pitch of the coil is not zero. The method according to any one of claims 1 to 10,
The tympanic perforated tube is a tympanic perforated tube formed of a shape memory alloy. In the method of manufacturing a tympanic perforated tube with a shape memory alloy to be inserted into the perforation of the tympanum to allow fluid to flow between the interior and the exterior of the tympanic membrane.
Preparing a coil spring in which the middle portion is formed such that the pitch of the coil is 0 and both ends thereof gradually increase in radius of the coil toward the ends; And
The method of manufacturing a high-permeable perforated tube comprising the step of heat-treating to remember the shape of the coil spring. In the method of manufacturing a tympanic perforated tube with a shape memory alloy to be inserted into the perforation of the tympanum to allow fluid to flow between the interior and the exterior of the tympanic membrane.
Preparing a coil spring;
Inserting the coil spring into a five-shaped body portion to position the body portion in the middle of the coil spring;
Deforming the both ends of the coil spring exposed to the outside of the body portion so that the radius of the coil gradually increases toward the end; And
The method of manufacturing a high-permeable perforated tube comprising the step of heat-treating to remember the shape of the coil spring. In the method of manufacturing a tympanic perforated tube with a shape memory alloy to be inserted into the perforation of the tympanum to allow fluid to flow between the interior and the exterior of the tympanic membrane.
Preparing a pipe pipe;
Laser processing both ends of the pipe in the form of a coil;
Deforming so as to gradually increase the radius of the coil toward both ends of the coil form; And
The method of manufacturing a high-permeable perforated tube comprising the step of heat treatment to remember the coil shape. The method according to any one of claims 12 to 14,
The method of manufacturing a tympanic cavity of the tympanic membrane further comprises coating a biocompatible material to prevent the growth of bacteria on the surface of the tympanic membrane.

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