KR102521930B1 - Medical thread including a butterfly-shaped cog assembly and manufacturing method thereof - Google Patents

Abstract

A medical thread including a butterfly-shaped cog assembly according to the present invention includes a headquarters in which at least one end of both ends is twisted by rotating at a predetermined number of rotations; A cog assembly formed in a plurality of sets at regular intervals along the longitudinal direction of the head office, with four cogs tapered at the ends forming one set and having a butterfly shape with an X-shaped cross section centered on a specific point of the head office; It is characterized by including.
According to the medical thread including the butterfly-shaped cog assembly according to the present invention, the cog assembly exhibits a symmetrical top and bottom shape so that it can serve as an anchor point at a specific location without being directed in a specific direction. It can provide an even lifting effect in the tissue as a whole.

Description

Medical thread including a butterfly-shaped cog assembly and manufacturing method thereof

The present invention relates to a medical thread including a butterfly-shaped cog assembly and a method for manufacturing the same, and more specifically, provides a lifting effect and a fixing effect on living tissue at the same time by including a cog assembly having an X-shaped butterfly shape It relates to a novel and advanced medical thread and a method for manufacturing the same.

Medical threads are also referred to as sutures, and have been widely used from the past mainly to provide a suture function for surgery.

With the development of melting threads such as PDO (polydioxanone), PLLA (Poly L Lactic Acid) or PCL (Polycaprolacton), which are known to promote collagen formation, they have developed into lifting threads used in so-called facelifting procedures to improve facial elasticity. did According to this, a lifting thread is inserted into a specific part of the face, making it easier than face lift, which is a kind of surgical method, and achieving a skin elasticity effect comparable to the surgical effect.

In order to enhance the lifting effect of such a lifting thread, a lifting thread having a cog inserted under the skin to lift the skin and then hooked and fixed to the subcutaneous tissue is being manufactured. Lifting threads with the shape and pattern of are being improved/developed.

Korean Patent No. 10-2163830, a lifting thread, a lifting thread manufacturing device, and a lifting thread manufacturing method, secure tensile strength that can withstand traction, and at the same time, a lifting thread including a protrusion having a precise shape without peeling and the lifting thread A manufacturing apparatus and a manufacturing method of the lifting seal are provided.

The lifting thread is a core thread extending from one side to the other side to form a length; a main body laminated on at least a portion of an outer circumferential surface of the core thread and extending in a longitudinal direction of the core thread; and a protrusion including a plurality of protrusions formed on the outer circumferential surface of the main body, wherein the boundary surface of the core thread and the protrusion includes the It is characterized in that the fused portion of the protrusion is formed.

However, according to the above technology, as well as known threads, protrusions formed at the front and rear ends of one thread are directed in a specific direction, but in this case, there is a limitation that intensive traction occurs only in a specific direction even in living tissue.

Therefore, in order to solve this problem, there is a need to provide a novel and advanced medical thread and a method for manufacturing the same, which can provide a uniform lifting effect as a whole by preventing the protrusions of the medical thread from being directed in a specific direction.

Domestic Patent No. 10-2163830

The main object of the present invention is to enable a medical thread to provide a uniform lifting effect to the entire living tissue.

Another object of the present invention is to naturally finish the end of the cog.

Another object of the present invention is to increase the contact area between the cog and the biological tissue.

In order to achieve the above object, a medical thread including a butterfly-shaped cog assembly according to the present invention includes a headquarters twisted by rotating at least one end of both ends at a predetermined rotational speed; A cog assembly formed in a plurality of sets at regular intervals along the longitudinal direction of the head office, with four cogs tapered at the ends forming one set and having a butterfly shape with an X-shaped cross section centered on a specific point of the head office; It is characterized by including.

Furthermore, the cog is characterized in that it includes a rounding part having a rounded end.

In addition, the cog is characterized in that it includes an expansion part whose volume is increased in a state in which roughness is imparted with moisture at the end.

According to the medical thread comprising the butterfly-shaped cog assembly of the present invention,

1) It is possible to provide an even lifting effect in biological tissue as a whole through a cog assembly that shows a symmetrical shape up and down and serves as an anchor point at that position without being directed in a specific direction,

2) The end of the cog is rounded so that the cog, which has a streamlined shape, is not easily broken even when exposed to pressure in various directions by biological tissue, and can exhibit solid support and fixation.

3) At the same time as the volume is increased at the end of the cog, an expansion part with roughness is formed to increase the binding area with the biological tissue, thereby increasing the binding force between the biological tissue and the cog, thereby strengthening the overall traction force.

1 is a conceptual diagram showing a medical thread of the present invention.
Figure 2 is a conceptual diagram showing an example in which the medical thread of the present invention is inserted into a living tissue.
3 is a conceptual diagram showing an enlarged cog assembly of the present invention;
4 is a conceptual diagram showing a rounding part of the present invention;
5 is a conceptual diagram showing an expansion part of the present invention.
Figure 6 is a flow chart showing a method for manufacturing a medical thread of the present invention.
7 is a plan view showing one embodiment of the medical thread twisting device of the present invention.
Figure 8 is a flow chart showing a method for manufacturing a medical thread for repeatedly spraying the propellant of the present invention.
9 is a conceptual diagram showing a contact portion and a fixing means of the present invention;
10 is a flowchart illustrating a method of manufacturing a medical thread using the contact part of the present invention.
11 is a conceptual diagram showing a finishing sheet of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and like reference numbers in each drawing indicate like elements.

1 is a conceptual diagram showing a medical thread of the present invention, FIG. 2 is a conceptual diagram showing an example in which the medical thread of the present invention is inserted into a living tissue, and FIG. 3 is a conceptual diagram showing an enlarged cog assembly of the present invention.

Referring to FIGS. 1 to 3, the medical thread 10 including the butterfly-shaped cog assembly 200 of the present invention is characterized in that it includes the head office 100 and the cog assembly 200.

Head office 100 is generally a bioabsorbable material widely used as a material for lifting threads, for example, polydioxanone, poly-L-lactic acid or polycaprolactone ) and the like. The above-mentioned substances can be decomposed and absorbed in living tissue to minimize side effects and allergic reactions, as well as promote collagen synthesis in living tissue.

In addition, in the case of such a headquarters 100, at least one end of both ends is rotated at a certain number of rotations to be twisted. Here, 'twist' generally covers treatments such as twisting, knotting, winding, etc., but in the present invention, the headquarters 100 is twisted like a screw thread and a screw that forms a bone, that is, torsion processing means that

The surface of the twisted headquarters 100 is raised and indented to be curved. In the present invention, a portion similar to a screw thread formed on the surface of the main office 100 is referred to as a 'elevated portion 101', and a portion similar to a bone is 'included' It is referred to as 'region 102'.

At this time, the known screw has a short helix lead (distance moved in the axial direction when the screw thread rotates once around the shaft), so a number of threads and valleys are formed at narrow intervals, but the twisted headquarters 100 is a spiral The lead of is longer than the known screw, so that a small number of standing parts 101 and recessed parts 102 are formed at wide intervals and gently bent, thereby preventing the possibility that the head office 100 may be broken by excessive twisting. possible.

Furthermore, the headquarters 100 of the present invention is not twisted, so that it can have a more three-dimensional three-dimensional shape compared to a medical headquarters having a smooth surface, thereby improving traction through a three-dimensional three-dimensional structure.

At this time, by forming a plurality of cogs 210 at regular intervals along the longitudinal direction of the head office 100, it is possible to maximize the lifting effect on living tissue.

Here, the medical thread 10 of the present invention preferably includes a cog assembly 200 in which four cogs 210 form a set. At this time, the cog assembly 200 has four cogs 210 having thin tapered ends. ) can be said to have a butterfly shape with an X-shaped cross-sectional shape based on a specific point of the head office 100 while forming a set.

Therefore, each cog 210 can be said to have a triangular shape with a thinly tapered end, and four such cogs 210 are gathered to represent a cog assembly 200 having an X-shaped cross-sectional shape similar to a bow tie can be said to be

In the case of such a cog assembly 200, it exhibits a symmetrical shape up and down, so that it can serve as an anchor point at that position without being directed in a specific direction, thereby providing a close coupling relationship with biological tissue. Rather than providing a lifting effect intensively in a specific direction or position, it can provide a lifting effect evenly as a whole, providing an advantage of evenly lifting biological tissue overall.

In order to explain the physical properties of the medical twisted yarn of the present invention, it will be described based on the experimental results of Examples and Comparative Examples. Here, the embodiment is the medical thread 10 including the butterfly-shaped cog assembly 200 of the present invention, and the comparative example is the conventional medical thread 10.

<Example>

A cog 210 is formed on the head office 100 having an average diameter of 0.6 mm, but four cogs 210 tapered to have thin ends form a set, forming an X shape centered on a specific point of the head office 100 A cog assembly 200 having a butterfly shape in cross section was formed. In the case of the medical thread 10, the average diameter including the cog 210 was 1.0 mm, and the medical thread 10 was completed by twisting it.

<Comparative example>

A medical thread 10 having an average diameter of 1.0 mm including the cog 210 was prepared by forming a cog 210 along one direction of the headquarters 100 having an average diameter of 0.6 mm.

[Fixed performance test]

A fixation test medium (10 cm wide, 10 cm long, 2.8 mm thick) manufactured according to the method for manufacturing a fixing force test medium was prepared.

At this time, the fixing force test medium is composed of a three-layer structure of an upper layer, a middle layer, and a lower layer, and the upper layer is made of 0.8 mm thick silicone, the middle layer is made of quasi-drug gauze No. 3 of the Korean Pharmacopoeia, and the lower layer is made of 1.0 mm silicone.

Here, the silicone constituting the upper layer exhibits a measured average modulus of elasticity of 10.5 psi, and the silicone constituting the lower layer exhibits a measured average modulus of elasticity of 14.6 psi.

Insert one medical thread (10) into the middle layer (gauze) of the fixation force test medium. When inserting, the entire cog 210 of the medical thread 10 must be inserted, and the gauze and the medical thread 10 are inserted in parallel.

The fixing force test medium into which the medical thread 10 is inserted is connected to the lower grip of the tensile tester, and one end of the medical thread 10 is connected to the upper grip.

Pull the medical thread 10 at a test speed of 35 cm/min and pull it out of the holding force test medium.

After all of the medical thread 10 inserted into the fixing force test medium comes out, the measured maximum force (peak) is recorded.

Experiments were repeated 10 times for each of the medical threads 10 of Examples and Comparative Examples, and the results are shown in Table 1 below.

Table 1 is a table showing the fixed performance test results. (Unit: N) One 2 3 4 5 6 7 8 9 10 average Example 16.0 5.0 5.2 4.6 9.4 8.2 4.0 6.2 breaking 3.6 6.91 comparative example 25.0 26.4 21.8 24.8 30.0 15.0 26.6 15.8 23.0 22.2 23.1

As can be seen by referring to Table 1, it can be seen that the medical thread 10 of the present invention has high fixation performance compared to the conventional medical thread 10.

Accordingly, it can be confirmed that the medical thread 10 of the present invention in which the twist treatment of the head office 100 and the butterfly-shaped cog assembly 200 are formed can exhibit traction and fixation force three times higher than the conventional flat structure thread. there is.

4 is a conceptual diagram showing a rounding part of the present invention.

Referring to FIG. 4 , each cog 210 included in the cog assembly 200 of the present invention may include a rounding part 211 having a rounded end.

Here, the rounding part 211 is a part of the end side of the cog 210, and it is possible to round the headquarters 100 in the outer direction of the headquarters 100 or the interior of the headquarters 100.

Therefore, in the case of the cog 210 rounded in this way, compared to the cog 210 simply extended in a straight shape, the bonding area with the biological tissue is widened to exhibit a higher fixing force to the biological tissue, so that the lifting effect can be further improved.

In addition, when the cog 210 as a whole is rounded outward from the head office 100, as much as the individual cogs 210 exhibit a streamlined shape, ease of insertion into living tissue can be increased, as well as the cog 210 exhibiting a streamlined shape. Even when exposed to pressure in various directions by biological tissue, it can exhibit solid support and fixation without being easily broken.

In addition, by naturally rounding and finishing the end of the cog 210, the rounded cog 210 can flexibly respond to pressure even when inserted into living tissue and even when pressed by living tissue.

5 is a conceptual diagram showing an expansion part of the present invention.

Referring to FIG. 5 , the cog 210 is characterized in that it includes an expansion part 212 whose volume is increased in a state in which roughness is applied along with moisture at the end.

Here, the expansion part 212 is a shape in which the surface area increases with the volume by giving a rough surface to the surface in a state where the end of the cog 210 contains moisture and expands, and the expansion part at the end of the above-described rounding part 211 ( 212) may be provided, or an expansion part 212 may be formed at an end of the cog 210 that is not rounded.

Since the surface of the expansion part 212 is roughened, it can provide a function of strengthening the traction force by increasing the binding force between the biological tissue and the cog 210 when inserted into the biological tissue, and the pressure of the biological tissue Of course, it is possible to prevent the medical thread 10 from being pushed or moved based on the expansion part 212 .

Furthermore, rather than grinding the end of the cog 210 to impart roughness, roughness is given in a state where the volume of the end is expanded by soaking in moisture to increase the surface area and volume, thereby maximizing the bonding area with biological tissue. Of course, it is possible to further provide an effect of increasing traction and fixing force through an increase in the binding area.

The expansion part 212 is formed by applying moisture to the surface of the head office 100 including the cog 210 and performing a surface treatment. A method of manufacturing such a medical thread 10 will be described with drawings. As follows.

6 is a flow chart showing a method for manufacturing a medical thread of the present invention, and FIG. 7 is a plan view showing an embodiment of a medical thread twisting device of the present invention.

Referring to FIGS. 6 and 7 , the manufacturing method of the medical thread 10 including the expansion part 212 of the present invention includes a headquarters 100 molding step, a propellant spraying step, a primary drying step, and a twisting step. , may include a final drying step.

When explaining in more detail the configuration of the apparatus of FIG. 7 used at this time and the process of fixing the headquarters 100 to the manufacturing apparatus and twisting, the manufacturing apparatus is a chamber having a space capable of accommodating the headquarters 100 ( 300), various means and members may be further included in the chamber 300.

Such a manufacturing apparatus may include a function of twisting the head office 100 and may further include a mechanical configuration such as a blade or a punching machine capable of forming the cog 210 on the head office 100. In addition, a cutting means capable of cutting the headquarters 100 to a specific length, a transportation means for transferring the headquarters 100 in which the cog 210 is formed to the chamber 300, and a chamber 300 that picks up the transferred headquarters 100 Including a picking means such as a robot arm each fixed to a fixing means inside, a drying means capable of drying the twisted head office 100, a sterilization means for sterilization treatment, and a blower capable of blowing the propellant, etc. can do.

The chamber 300 may include a separate door, so that it may be sealed and opened through the door, and a pair of fixing means 310 for fixing and rotating the headquarters 100 in the inner space of the chamber 300 This is provided so that the main office 100 can be accommodated in the inner space of the chamber 300 while both ends of the main office 100 are fixed to the fixing means 310 .

Here, the fixing means 310 is basically a rotating part such as a motor connected to the fixed part via the shaft 340 while having a fixed part such as tongs capable of holding and fixing one side of the longitudinal direction of the head office 100. It is characterized in that rotation is possible by providing a (330).

In addition, the fixing means 310 are spaced apart from each other by a predetermined distance, and if one of the pair of fixing means 310 is the first fixing means 311, the other one may be the second fixing means 312. Preferably, these fixing means 310 can grab and fix both ends in the longitudinal direction of the head office 100, of course. A method of manufacturing the medical thread 10 using such a device will be described below.

First, the main office 100 molding step is a process of molding the main office 100 including the cog assembly 200. This prepares the head office 100 made of a bioabsorbable material, cuts the surface of the head office 100 arbitrarily, or cuts the cog 210 by punching the surface of the head office 100 through a punching machine. Formation, but at this time, by controlling the direction and shape of forming the cog 210, four cogs 210 tapered to have a thin end form a set, forming an X-shaped cross section around a specific point of the head office 100 This may be referred to as a process of forming the cog assembly 200 having a butterfly shape.

The propellant spraying step is a process of spraying a propellant mixed with heated air and moisture on the surface of the head office 100 through a blower included in the chamber 300 shown in FIG. 7 . At this time, as the propellant is sprayed through the blower, the tip of the cog 210, which has the smallest volume among the head office 100 and has the widest contact area with the propellant, holds moisture, and as it expands due to moisture, the cog 210 The volume of the tip of is increased. In addition, as the heated air contacts the end of the cog 210 containing moisture, a part of the end surface is cracked and grooves are formed on the surface, so that the above-described expansion part 212 may be formed. Here, the volume ratio or weight ratio of the heated air and moisture contained in the propellant is not limited.

The primary drying step performed subsequently is a process of primary drying the head office 100 to which the propellant is sprayed. At this time, for the primary drying step, the head office ( 100) may be primarily dried, or the head office 100 may be primarily dried by spraying only heated air that does not contain moisture through the blower described above.

Here, the above-described drying means may be a device such as a hot air dryer or an infrared dryer that can specifically set the drying time and drying temperature, and through this drying means, the headquarters (100) within a temperature range that prevents additional deformation ( 100) may proceed with drying. It is possible to fix the shape so that the expanded part 212 created through this is maintained as it is without shrinking or tearing.

The twisting step is a process of twisting by fixing both ends of the main office 100 with fixing means 310 and rotating at least one end of both ends of the main office 100 at a certain number of rotations.

If the above description of the device is subsequently added, the head office 100 on which the cog assembly 200 is formed may be transported to the chamber 300 by a transfer unit, and the picking unit picks up the head office 100 and fixes the fixing unit 310. When moving to the part, the fixed part can pick it up and fix it, and the headquarters 100 fixed to the fixed part can be rotated by driving the rotating part 330 to be twisted.

Furthermore, at least one end of both ends of the head office 100 is rotated at a certain number of revolutions. To this end, at least one of the fixing means 310 is rotated so that at least one of both ends of the head office 100 One end of is rotated.

The final drying step is a process of final drying the twisted headquarters 100 using a drying means or the like. Here, after drying the main office 100 through a drying means provided in the chamber 300 or separately provided, it is also possible to sterilize the finished main office 100 through a sterilization means.

Specifically, the drying means may be a device such as a hot air dryer or an infrared dryer that can set the drying time and drying temperature, and through this drying means, the headquarters 100 is dried within a temperature range that prevents the headquarters 100 from being deformed. can proceed.

Specifically, while the drying means can dry the headquarters 100, as described above, it is preferable to set a temperature of 20 to 40° C., which is a temperature range in which the headquarters 100 made of materials such as PDO and PLLA are not deformed by heat. Further, the drying time may be set according to the temperature within the range of 10 minutes to 6 hours.

Through this drying process, the moisture contained in or remaining in the headquarters 100 is evaporated to prevent deterioration and deformation such as decomposition or shrinkage of the headquarters 100 due to moisture, and furthermore, the twisted headquarters 100 The main office 100 is fixed as it is.

Subsequently, sterilization treatment proceeds. The sterilization treatment is to sterilize the headquarters 100 through a sterilization means that can be provided in the chamber 300 or distinguished as a separate device from the chamber 300. means that

Here, the sterilization means may be a device such as an ultraviolet sterilizer, a high-pressure sterilizer, or a gas sterilizer capable of removing germs such as germs and microorganisms that may exist in the headquarters 100. For example, when the sterilization means is an ultraviolet sterilizer The head office 100 may be sterilized by irradiating the head office 100 with ultraviolet rays of a short wavelength of 10 to 100 nm having strong sterilization ability. Furthermore, when the sterilization means is a gas sterilizer, the gas sterilizer may sterilize the main office 100 by spraying ethylene oxide (EO) gas.

Therefore, according to the manufacturing method of the medical thread 10, in forming and twisting the yarn yarn 100, the volume of the yarn yarn 100 is the thinnest among the yarn yarn 100 through the propellant spraying step and the primary drying step in the process in between. part, that is, the end of the cog 210, which is a part that can be easily expanded by moisture, is exposed to the propellant to increase its volume, and furthermore, the heating air increases the volume (expanded by containing moisture) the cog ( 210), it is possible to form the expansion part 212 by giving a roughness by cracking the surface or tearing off part of the surface while striking the end thereof and forming a groove.

Therefore, in conclusion, it provides a uniform lifting effect that is not directed in a specific direction through the cog assembly 200 shaped like a bow tie, and at the same time, it can have a more three-dimensional three-dimensional shape through twist processing, thereby evenly increasing the traction force, In addition, by forming the expansion part 212 at the end of the cog 210, it is possible to increase the binding force by increasing the contact area with living tissue.

Figure 8 is a flow chart showing a method for manufacturing a medical thread for repeatedly spraying the propellant of the present invention.

In addition, in order to maximize the effect in forming the expansion part 212 through such propellant spraying and drying, it is possible to repeat the propellant spraying and drying twice. The manufacturing method of the yarn 10 may include forming the yarn 100, spraying the propellant, primary drying, additional spraying, secondary drying, twisting, and final drying.

Here, the main body 100 forming step, twisting step, and final step are the same as the above description, so a more detailed description will be omitted.

First, in the propellant spraying step, a propellant in which heated air heated to a first temperature and moisture is mixed is sprayed on the surface of the head office 100 through a blower. Here, the temperature of the heating air is controlled to the first temperature, and through this, it is possible to primarily form the expansion part 212 at the end of the cog 210.

In addition, in the primary drying step, primary shape fixing is performed so that the expansion part 212 formed by primary drying treatment of the headquarters 100 sprayed with the propellant during the first drying time maintains its shape without shrinking or tearing. .

In addition, the additional spraying step is a process of additionally spraying a propellant in which heated air heated to a second temperature higher than the first temperature and moisture is mixed on the surface of the main office 100 subjected to the tea drying process. At this time, the same blower as in the propellant spraying step may be used, but preferably, the heating air included in the propellant sprayed through the blower is heated to a second temperature.

Therefore, the volume expansion effect is increased by additionally supplying moisture to the end of the head office 100, especially the cog 210 having a small volume, but at this time, heating air heated to a higher second temperature is added together to maximize the volume expansion effect, and further This is to increase the efficiency of forming the expansion part 212 by increasing the roughness imparting effect on the surface.

In addition, in the secondary drying step, the head office 100 to which the propellant is additionally sprayed may be subjected to secondary drying for a second drying time longer than the first drying time. Through this, when an excessive volume increase occurs in the additional spraying step, the volume is partially reduced, and at the same time, the expansion part 212 is dried for a longer time to fix the shape and stabilize the headquarters 100. At this time, in the secondary drying step, drying is performed for a second drying time longer than the first drying time, but preferably, the drying is performed by lowering the drying temperature compared to the primary drying step, through which the expansion part 212 It is possible to prevent the volume increasing effect from being excessively reduced due to an excessive decrease in volume.

According to the manufacturing method of the medical thread 10 in which the expansion part 212 is formed through repeated spraying and repeated drying of the propellant, the process of spraying and drying the propellant containing heated air heated to different temperatures It is possible to increase the formation efficiency of the expansion part 212 having an increased surface roughness in a state in which the volume is increased by holding moisture by repeating, and at the same time, the head office 100 maintains a stable state even when heating and drying are repeated.

9 is a conceptual diagram showing a contact part and a fixing means of the present invention, and FIG. 10 is a flow chart showing a method of manufacturing a medical thread using the contact part of the present invention.

9 and 10, the manufacturing method of the medical thread 10 to form the rounding part 211 included in the end of the cog 210 is described, preferably including the cog assembly 200. Thus, the manufacturing method of the medical thread 10 in which the rounding part 211 is formed at the end of the cog 210 may include a headquarters molding step, a contact preparation step, a twisting step, and a final drying step.

As described above, the molding step of the main office 100 is a step of molding the main office 100 including the cog assembly 200, which is perfectly consistent with the molding step of the main office 100 described with reference to FIG. 6 described above. Therefore, reference is made to this and a detailed description thereof will be omitted.

The contact part 320 preparation step is a process of preparing a cylindrical contact part 320 having a hollow, wherein the contact part 320 can be preferably provided in the above-described chamber 300, and a pair of fixing means. A contact portion 320 is provided between the 310 so that the head office 100 is inserted into the hollow of the contact portion 320 and then both ends of the head office 100 can be fixed to the fixing means 310, respectively.

In this case, the material of the contact portion 320 is not particularly limited, but may be preferably formed of a material having excellent heat resistance and wear resistance, such as stainless steel or engineering plastic, which does not easily corrode.

In the twisting step, the head office 100 is put into the hollow so that the end of the cog 210 contacts one side of the inner surface of the contact portion 320, and then both ends of the head office 100 are fixed with fixing means 310, respectively, and the head office 100 is fixed. It is a process of twisting by rotating at least one end of both ends of (100) at a certain number of rotations.

This twisting step basically refers to the above-described twisting step described with FIG. 6 in which at least one end is rotated and twisted while both ends are fixed by the fixing means 310, but the difference is that when twisting The cog ( 210) is rounded to form a rounded part 211.

The final drying step is a process of final drying the twisted headquarters 100 using a drying means or the like. Here, after drying the main office 100 through a drying means provided in the chamber 300 or separately provided, it is also possible to sterilize the finished main office 100 through a sterilization means.

Specifically, the drying means may be a device such as a hot air dryer or an infrared dryer that can set the drying time and drying temperature, and through this drying means, the headquarters 100 is dried within a temperature range that prevents the headquarters 100 from being deformed. can proceed.

Specifically, while the drying means can dry the headquarters 100, as described above, it is preferable to set a temperature of 20 to 40° C., which is a temperature range in which the headquarters 100 made of materials such as PDO and PLLA are not deformed by heat. Further, the drying time may be set according to the temperature within the range of 10 minutes to 6 hours.

Through this drying process, the moisture contained in or remaining in the headquarters 100 is evaporated to prevent deterioration and deformation such as decomposition or shrinkage of the headquarters 100 due to moisture, and furthermore, the twisted headquarters 100 The main office 100 is fixed as it is.

Subsequently, sterilization treatment proceeds. The sterilization treatment is to sterilize the headquarters 100 through a sterilization means that can be provided in the chamber 300 or distinguished as a separate device from the chamber 300. means that

Here, the sterilization means may be a device such as an ultraviolet sterilizer, a high-pressure sterilizer, or a gas sterilizer capable of removing germs such as germs and microorganisms that may exist in the headquarters 100. For example, when the sterilization means is an ultraviolet sterilizer The head office 100 may be sterilized by irradiating the head office 100 with ultraviolet rays of a short wavelength of 10 to 100 nm having strong sterilization ability. Furthermore, when the sterilization means is a gas sterilizer, the gas sterilizer may sterilize the main office 100 by spraying ethylene oxide (EO) gas.

Therefore, according to this configuration, the end of the cog 210 is rounded only by providing the cylindrical contact portion 320 having a hollow between the pair of fixing means 310 provided in the conventional chamber 300. By doing so, it is possible to form the rounding part 211 at the same time as the twist process of the head office 100, thereby maximizing the convenience of processing.

11 is a conceptual diagram showing a finishing sheet of the present invention.

Referring to FIG. 11, it is also possible to further form the above-described expansion part 212 as well as to form a rounding part 211 at the end of the cog 210 by adding an additional configuration to the inner surface of the contact part. For this purpose, a finishing sheet made of a porous material may be provided on one side of the inner surface of the contact part, that is, a portion of the contact part facing the cog 210 .

The finishing sheet 321 is a porous material that can contain moisture, and may be easily made of a non-woven fabric or a material such as a scrubber. In this case, the finishing sheet 321 is preferably made of a material such as a non-woven fabric having a rough surface or a scrubber having a rough surface, and is porous and can contain moisture while effectively imparting roughness to the end surface of the cog 210. It is preferably made of a material with

In addition, when such a finishing sheet 321 is provided, a warm water immersion step may be included between the contact part 320 preparation step and the twisting step. It is a process of

Here, the temperature of the hot water may be set in the range of 40 to 80 ° C. At this time, when the temperature of the hot water falls below 40 degrees Celsius, moisture is not easily contained at the end of the cog 210, so the expansion effect is reduced, and exceeds 80 degrees In this case, the temperature of the hot water is preferably set in the range of 40 to 80 ° C.

Therefore, the finishing sheet 321 is immersed in such hot water. To this end, hot water is sprayed on the finishing sheet 321 provided on the inner surface of the contact portion 320 or the entire contact portion 320 is immersed in hot water to form the finishing sheet 321. Allow hot water to be immersed in.

Therefore, when the finishing sheet 321 is immersed in hot water while the finishing sheet 321 is provided, the twisting process is performed while the end of the cog 210 is in contact with one side of the finishing sheet 321 during the twisting step. is made, the end of the cog 210 is not only rounded, but also water is supplied to the end of the cog 210 through the finishing sheet 321 and friction is performed at the same time, so that the rounding part 211 and the expansion part 212 are formed simultaneously.

That is, the end of the cog 210 is rounded, and at the same time, the end of the rounded part 211 or the entire rounding part 211 contains moisture and roughness can be imparted to the surface in a state where the volume is increased.

According to the manufacturing method of the medical thread 10, the rounding part 211 is formed through the contact part 320 having a hollow, and at the same time, the expansion part 212 is formed through the finishing sheet 321 provided in the contact part 320. It is possible to conveniently perform the shape processing of the cog 210 through the contact portion 320 so as to form.

Furthermore, the twisting step of performing the twisting process of the headquarters 100 while bringing the end of the cog 210 into contact with the contact part 320 provided with the above-described finishing sheet 321 is more preferably the first rotation process step and the second rotation process. processing steps may be included.

In the first rotation processing step, the head office 100 is put into the hollow so that the ends of the cog 210 come into contact with the surface of the finishing sheet 321, and both ends of the head office 100 are fixed with fixing means 310. This step is to rotate at least one end of both ends of the head office 100 at a first rotational speed. This is similar to the basic configuration of the twisting step described above, but it can be said that the first twist is performed by rotating the medical thread 10 at a first rotational speed.

At this time, the twisting process is performed while the cog 210 is in contact with the surface of the finishing sheet 321, so that the rounding part 211 is formed, and at the same time, the volume of the end of the cog 210 is increased in part or all of the rounding part 211. At the same time, abrasion of the surface may occur and roughness may be imparted to form the expansion part 212 .

Subsequently, the second rotation processing step is a step of rotating at least one end of both ends of the head office 100 at a second rotational speed faster than the first rotational speed while spraying heated air into the hollow. Therefore, at this time, as the head office 100 rotated at the first rotational speed is additionally rotated at the second rotational speed, the head office 100 rotated at the desired number of rotations (for example, rotated 20 times) as described above is manufactured. In this case, since the rotation speed may be higher as the rotation speed is preferably higher, the second rotation process step may have a higher rotation speed than the first rotation process step.

Furthermore, as heated air is blown into the hollow here, a twist process occurs, and the finishing sheet 321 is dried and repeatedly rubbed against the end of the cog 210. While rubbing against the dried finishing sheet 321, the effect of imparting surface roughness may be maximized.

As described so far, the configuration and operation of the medical thread 10 including the butterfly-shaped cog assembly 200 according to the present invention are expressed in the above description and drawings, but this is only an example and the spirit of the present invention It is not limited to the above description and drawings, and various changes and modifications are possible without departing from the technical spirit of the present invention.

10: medical room 100: headquarters
101: erected part 102: indented part
200: cog assembly 210: cog
211: rounding part 212: expansion part
300: chamber 310: fixing means
311: first fixing means 312: second fixing means
320: contact part 321: finishing sheet
330: rotating part 340: shaft

Claims (8)

A medical thread comprising a butterfly-shaped cog assembly,
Headquarters twisted by rotating at least one end of both ends at a certain number of rotations;
A cog assembly formed in a plurality of sets at regular intervals along the longitudinal direction of the head office, with four cogs tapered at the ends forming one set and having a butterfly shape with an X-shaped cross section centered on a specific point of the head office; include,
The cog,
Characterized in that it comprises an expansion part whose volume is increased in a state in which roughness is imparted with moisture at the end, medical thread. According to claim 1,
The cog,
A medical thread characterized in that it comprises a rounded part having an end portion rounded. delete A method for manufacturing a medical thread including a butterfly-shaped cog assembly,
At least one end of both ends is rotated at a certain number of revolutions to form a plurality of sets at regular intervals along the longitudinal direction of the twisted headquarters, and the ends are tapered to form a set of four cogs that are thin. Molding the headquarters including the cog assembly having a butterfly shape of X-shaped cross section around a specific point of the headquarters, molding step of the headquarters;
A propellant spraying step of spraying a propellant in which heated air and moisture are mixed on the surface of the head office through a blower;
A primary drying step of primary drying the head office to which the propellant is sprayed;
Twisting step of fixing both ends of the main body with a fixing means and twisting by rotating at least one end of both ends of the main body at a certain number of rotations;
characterized in that it comprises a, a final drying step of final drying the twisted headquarters. According to claim 4,
The propellant injection step,
Spraying a propellant mixed with heated air and moisture heated to a first temperature on the surface of the head office through a blower,
In the first drying step,
The main body sprayed with the propellant is subjected to a primary drying process during a first drying time,
Between the primary drying step and the twisting step,
An additional spraying step of additionally spraying a propellant in which heated air heated to a second temperature higher than the first temperature and moisture is mixed on the surface of the head office that has been subjected to the primary drying process; and,
A method for manufacturing a medical thread, characterized in that it includes a; secondary drying step of subjecting the headquarters to which the propellant is additionally sprayed for a second drying time longer than the first drying time. A method for manufacturing a medical thread including a butterfly-shaped cog assembly,
At least one end of both ends is rotated at a certain number of revolutions to form a plurality of sets at regular intervals along the length direction of the twisted headquarters, and the ends are tapered to form a set of four cogs. A head office molding step of molding a head office including a cog assembly having a butterfly shape with an X-shaped cross section around a specific point of the head office;
preparing a contact portion having a cylindrical shape having a hollow;
After putting the head office into the hollow so that the end of the cog comes into contact with one side of the inner surface of the contact part, both ends of the head office are fixed with a fixing means, and at least one of both ends of the head office is rotated at a certain rotational speed. Rotating and twisting while rounding the end, twisting step;
characterized in that it comprises a, a final drying step of final drying the twisted headquarters. According to claim 6,
In the part facing the cog from the contact part,
A finishing sheet made of a porous material is provided,
Between the contact preparation step and the twisting step,
A method of manufacturing a medical thread, characterized in that it comprises a hot water immersion step of immersing the finishing sheet in hot water of 40 to 80 °C. According to claim 7,
The twisting step,
After putting the main office into the hollow so that the end of the cog comes into contact with the surface of the finishing sheet, both ends of the main office are fixed with a fixing means, and at least one of both ends of the main office is rotated at a first rotational speed. A first rotation processing step of rotating;
A second rotation processing step of rotating at least one of both ends of the main body at a second rotational speed faster than the first rotational speed while spraying heated air into the hollow, medical thread manufacturing method.

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