KR20230171775A - Medical suture - Google Patents

Abstract

One embodiment of the present invention is a medical suture having a distal part and a proximal part and a protrusion formed on the outer surface, wherein the distal part is a first fixing part and is attached to the first fixing part so that a ring is formed on the distal side of the first fixing part. A medical suture is provided, including a second fixing part that is fixed and a reinforcing part that is fixed to the fixing parts of the first fixing part and the second fixing part.

Description

Medical suture {MEDICAL SUTURE}

The present invention relates to medical suture, and more specifically, to medical suture that can complete tissue suturing without tying the suture.

In general, sutures are used to connect or suture various damaged areas of animal tissue such as skin, muscles, tendons, internal organs, bone tissue, nerves, blood vessels, etc. and incisions following surgical operations, as well as tissues such as facial lifts. It is also used for cosmetic purposes such as lift surgery.

Recently, barbed sutures have been developed and used. These barbed sutures have one or more protruding barbs formed on the surface of the body at regular intervals along the length of the body. Barbed sutures have unidirectional mobility due to the structure and action of the barbs. It is a characteristic. That is, due to the structure of the barb, which can inhibit movement in one direction, the barbed suture is inserted through the tissue in one direction and then movement in the opposite direction is inhibited.

Here, after the barbed suture is inserted into the tissue, if there is no anchor means in the tissue to securely support the end of the suture, slippage in one movable direction occurs. Accordingly, conventionally, as shown in FIG. 1, a ring (L) was formed at the distal end (11) of the suture (10). In detail, the conventional suture 10 is manufactured by forming the distal ends 11 into a ring (L) shape and then bonding them to each other by applying a predetermined amount of heat.

However, since the joint portion 12 is formed as a single joint and the tearing strength or tensile strength is relatively weak, there is a problem that the distal ring L may be broken during the procedure.

The present invention is intended to solve the problems of the prior art described above, and the purpose of the present invention is to provide a medical suture with improved physical strength.

One aspect of the present invention is a medical suture having a distal part and a proximal part and a protrusion formed on the outer surface, wherein the distal part is a first fixing part and is fixed to the first fixing part so that a ring is formed on the distal side of the first fixing part. It provides a medical suture, including a second fixing part and a reinforcing part fixed to the fixing part of the first fixing part and the second fixing part.

In one embodiment, the first fixing part and the second fixing part may be arranged to be horizontal to each other.

In one embodiment, the reinforcement part may be fixed in a spiral shape along the outer surfaces of the first fixing part and the second fixing part.

In one embodiment, the reinforcement part may be fixed to be horizontal with the first fixing part and the second fixing part along the fixing portion.

In one embodiment, the proximal end of the second fixing part and the proximal end of the reinforcing part may be formed as an inclined surface.

In one embodiment, the first fixing part, the second fixing part, and the reinforcing part may be fixed to each other by one or more of adhesive, epoxy, heat, and ultrasonic energy.

In one embodiment, the medical suture is made of polydioxanone, monocryl, polycarprolactone, poly(glycolic acid), and polylacticcoglycolic acid (Poly( It may consist of one or more of lactic-co-glycolic acid)).

In one embodiment, the medical suture may be made of one or more of polypropylene, nylon, and polytetrafluoroethylene.

According to one aspect of the present invention, the physical strength of the medical suture is improved by additionally fixing the reinforcing parts to the fixing portions of the first fixing part and the second fixing part.

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a schematic diagram of a conventional suture.
Figure 2 is a perspective view of a medical suture according to a first embodiment of the present invention.
Figure 3 shows the manufacturing process of medical suture according to the first embodiment of the present invention.
Figure 4 is a perspective view of a medical suture according to a second embodiment of the present invention.
Figure 5 shows the manufacturing process of medical suture according to the second embodiment of the present invention.
Figure 6 is a diagram showing the results of measuring the physical strength of medical sutures according to the first and second embodiments of the present invention.

Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention may be implemented in various different forms and, therefore, is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part is said to be “connected” to another part, this includes not only cases where it is “directly connected,” but also cases where it is “indirectly connected” with another member in between. . Additionally, when a part is said to “include” a certain component, this does not mean that other components are excluded, but that other components can be added, unless specifically stated to the contrary.

As used herein, terms containing ordinal numbers such as 'first' or 'second' may be used to describe various components or steps, but the components or steps should not be limited by the ordinal numbers. . Terms containing ordinal numbers should be interpreted only to distinguish one component or step from other components or steps.

Figure 2 is a perspective view of a medical suture according to the first embodiment of the present invention, and Figure 3 is a manufacturing process of the medical suture according to the first embodiment of the present invention.

Hereinafter, the medical suture 100 according to the first embodiment of the present invention will be described in detail with reference to FIGS. 2 and 3.

The medical suture 100 according to the first embodiment of the present invention is used to connect or suture various damaged areas of animal tissues such as skin, muscles, tendons, internal organs, bone tissue, nerves, blood vessels, etc., and incisions following surgical operations. In addition to being used for cosmetic purposes such as tissue lifting surgery such as facial lift surgery, a number of protrusions (not shown) are formed on the outer surface.

In detail, a plurality of protrusions are formed to be spaced apart at regular intervals along the longitudinal direction of the medical suture 100. In addition, the protrusions may protrude in the same direction, in different directions, or in symmetrical directions. In other words, the protrusion serves to anchor the medical suture 100 so that it does not move when the medical suture 100 is inserted into the skin, and when the medical suture 100 is inserted into the tissue, it moves in the opposite direction to the insertion direction due to the protrusion. is suppressed.

The suture raw material constituting the medical suture 100 of the present invention may be manufactured from a single-filament polymer. Specifically, for example, suture raw materials include Polydioxanone, Monocryl, polycarprolactone, Poly(glycolic acid), and Poly(lactic). -co-glycolic acid)) can be manufactured from a bioabsorbable medical polymer composed of one or more of the following.

However, it is not limited to this, and for example, the suture raw material may be made of a non-absorbable medical polymer made of one or more of polypropylene, nylon, and polytetrafluoroethylene.

Meanwhile, the medical suture 100 has a predetermined length and includes a distal part 110 and a proximal part (not shown).

A puncturing means such as a surgical needle is connected to the proximal part of the medical suture 100, and the surgical needle is inserted into the skin to serve as a guide to guide the direction of movement of the medical suture 100.

At the distal portion 110 of the medical suture 100, a ring L is formed that serves as an anchor that can securely support the medical suture 100 in skin tissue.

In detail, the distal part 110 is configured to include a first fixing part 111 and a second fixing part 112. The first fixing part 111 and the second fixing part 112 are aligned to be parallel, and the second fixing part 112 is attached to the outer surface of the first fixing part 111. As a result, the ring L1 formed by fixing the first fixing part 111 and the second fixing part 112 is located on the distal side of the first fixing part 111 and the second fixing part 112. .

Preferably, the ring L1 may be formed to have a diameter through which a surgical needle placed at the proximal portion can pass.

At this time, the first fixing part 111 and the second fixing part 112 may be fixed to each other by at least one method selected from the group consisting of adhesive, epoxy, heat, and ultrasonic energy.

For example, when the first fixing part 111 and the second fixing part 112 are in contact and the contact surface is heat treated above the melting point of the raw material of the medical suture 100 and then cooled, the first fixing part 111 ) and a portion of the contact surface of the second fixing part 112 melts, forming a recrystallized fixing part 113. Since the ring L1 acts as an anchor means that is fixed and supported by being caught in the skin tissue, it prevents the medical suture 100 from continuing to move in the direction of movement of the proximal portion. In addition, the process of making a knot in the distal part 110 of the medical suture 100 can be omitted, thereby reducing the surgical time and reducing the risks that may occur during the knotting process.

Preferably, the proximal end 112a of the second fixing part 112 may be formed as an inclined surface. In this case, the first fixing part 111 and the second fixing part 112 can be easily inserted into the skin tissue along the inclined surface.

On the other hand, when the first fixing part 111 and the second fixing part 112 are single-joined as described above, the tensile strength or tearing strength of the fixing part 113 is relatively weak, so the first fixing part ( 111) and the second fixing part 112 are torn from the fixing part 113, and the distal ring L1 may be broken.

Accordingly, the medical suture 100 according to the first embodiment of the present invention is characterized in that the reinforcing part 114 is fixed to the fixing part 113.

The reinforcement part 114 may be formed to surround the first fixing part 111 and the second fixing part 112. In detail, as shown in FIG. 2, the reinforcement part 114 is formed in a spiral shape surrounding the outer surfaces of the first fixing part 111 and the second fixing part 112, and the first fixing part 111 ) and is arranged to be spaced apart from the adjacent reinforcement part 114 along the longitudinal direction of the first fixing part 111 or the second fixing part 112 by a predetermined distance d so that a portion of the outer surface of the second fixing part 112 is exposed. You can.

However, the present invention is not limited to this, and the reinforcing part 114 may be formed to surround the entire outer surface of the first fixing part 111 and the second fixing part 112, that is, so that d is 0.

When the reinforcing part 114 is in contact with the first fixing part 111 and the second fixing part 112, the contact surface is heat treated above the melting point of the raw material of the medical suture 100, and then cooled, the reinforcing part 114 ) and a portion of the contact surface of the first fixing part 111 and the second fixing part 112 melts and recrystallizes, thereby reinforcing the fixing part 113.

That is, by fixing the reinforcement portion 114 to the fixing portion 113, the tearing strength or tensile strength of the medical suture 100 can be improved.

Hereinafter, the manufacturing method of the medical suture 100 according to the first embodiment of the present invention will be described in detail with reference to FIG. 3.

First, a protrusion is formed on the outer peripheral surface of the medical suture 100. For example, it is possible to form protrusions by injection molding or compression molding using a mold, or by continuously passing the medical suture 100 through a compressor equipped with a compression mold capable of forming protrusions. It is possible to form In addition, the medical suture 100 may be continuously passed through a blade cutting machine to cut the outer peripheral surface of the medical suture 100 to form a protrusion.

Next, the distal free end (f) of the medical suture 100 is bent and the second fixing part 112 is brought into contact with the first fixing part 111 of the distal part 110 to form a first ring (L1). , heat treatment is applied to the contact area between the first fixing part 111 and the second fixing part 112 to form the fixing part 113.

Then, the proximal free end (f) of the second fixing part 112 is bent to the distal side to form a second ring (L2). In addition, the reinforcement part 114, the first fixing part 111, and the second fixing part ( Heat treatment is applied to the contact area of 112) to reinforce the fixing area 113.

Finally, the proximal end 112a of the second fixing part 112 and the proximal end 114a of the reinforcing part 114 are aligned in the longitudinal direction of the first fixing part 111, that is, in the moving direction of the medical suture 100. It is cut to form a slope inclined at a predetermined angle. Additionally, the distal free end (f) of the reinforcement portion 114 may be cut.

Meanwhile, in the above embodiment, the first fixing part 111, the second fixing part 112, and the reinforcing part 114 are described as being formed from a single medical suture 100, but the reinforcing part is formed from the first fixing part ( 111) and the second fixing part 112 may be composed of a separate medical suture from the medical suture 100.

Figure 4 is a perspective view of a medical suture according to a second embodiment of the present invention, and Figure 5 is a manufacturing process of a medical suture according to a second embodiment of the present invention.

Hereinafter, the medical suture 200 according to the second embodiment of the present invention will be described in detail with reference to FIGS. 4 and 5. The parts that overlap with the first embodiment will be omitted, and the second embodiment of the present invention will be described. Identical and similar members are assigned identical and similar symbols, and detailed descriptions thereof are omitted.

The reinforcing part 214 of the medical suture 200 according to the second embodiment is arranged in parallel along the longitudinal direction of the fixing portion 213 of the first fixing part 211 and the second fixing part 212.

In detail, the free end (f) of the reinforcement part 214 is bent and comes into contact with the side part of the fixing part 213 of the first fixing part 211 and the second fixing part 212, and the reinforcement part 214 ) is in contact with the first fixing part 211 and the second fixing part 212, and when the contact surface is heat treated above the melting point of the raw material of the medical suture 100 and then cooled, the reinforcement part 214 and the second fixing part 212 are formed. Part of the contact surface between the first fixing part 211 and the second fixing part 212 melts and recrystallizes, thereby reinforcing the fixing part 113.

In this way, when the reinforcing part 214 is fixed to the side part of the fixing part 213 in a horizontal state with the first fixing part 211 and the second fixing part 212, the tearing strength of the medical suture 200 or Tensile strength can be further improved.

Figure 6 is a diagram showing the results of measuring the physical strength of medical sutures 100 and 200 according to the first and second embodiments of the present invention.

Hereinafter, with reference to FIG. 6, the content of the present invention will be described in more detail through examples and test examples. These examples and test examples are provided to understand the content of the present invention, but the scope of the present invention is not limited to these examples and test examples, and modifications, substitutions, insertions, etc. commonly known in the art. can be performed, and this is also included in the scope of the present invention.

[Example 1]

The medical suture 100 according to Example 1 was manufactured so that the reinforcing part 114 spirally wraps the outer surfaces of the first fixing part 111 and the second fixing part 112 to partially expose them, as shown in FIG. 3 .

[Example 2]

The medical suture 200 according to Example 2 was manufactured so that the reinforcing part 214 was arranged horizontally along the adhesive portion 213 of the first fixing part 211 and the second fixing part 212, as shown in FIG. 5. .

[Comparative example]

The medical suture 10 according to the comparative example was manufactured in the same manner as Example 1, except for the step of forming the reinforcement portion.

[Test example]

The tensile strength and tear strength of medical sutures manufactured according to Example 1, Example 2, and Comparative Example were compared by measuring methods, and the results are as shown in FIG. 6.

As shown in FIG. 6, it was confirmed that the increase in tensile strength and tear strength of Examples 1 and 2 in which the reinforcement portions 114 and 214 were formed was statistically significant compared to the comparative example, and in particular, the tensile strength and tear strength were statistically significant. It was confirmed that the heat intensity was significantly higher compared to the comparative example.

In addition, it was confirmed that the tensile strength and tear strength of Example 2 further increased compared to Example 1. This appears to have occurred as the contact area between the fixing portion 213 and the reinforcing portion 214 of Example 2 was expanded compared to Example 1.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims described below, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

100, 200 medical suture
110, 210 distal
111, 211 first fixing part
112, 212 second fixing part
113, 213 fixation area
114, 214 reinforcement section
f free end
L1 ring, ring 1
L2 2nd ring

Claims (8)

A medical suture having a distal part and a proximal part and a protrusion formed on the outer surface,
The distal part is,
First fixing part;
a second fixing part fixed to the first fixing part so that a ring is formed on a distal side of the first fixing part; and
a reinforcing part fixed to the fixing portions of the first fixing part and the second fixing part; Including, medical suture. According to claim 1,
A medical suture, characterized in that the first fixing part and the second fixing part are arranged horizontally to each other. According to claim 1,
The reinforcing part is a medical suture, characterized in that it is fixed in a spiral shape along the outer surfaces of the first fixing part and the second fixing part. According to claim 1,
A medical suture, characterized in that the reinforcing part is fixed along the fixing portion to be parallel to the first fixing part and the second fixing part. According to claim 1,
A medical suture, characterized in that the proximal end of the second fixing part and the proximal end of the reinforcing part are formed as inclined surfaces. According to claim 1,
The first fixing part, the second fixing part, and the reinforcing part,
Medical sutures, characterized in that they are held together by one or more of adhesive, epoxy, heat and ultrasonic energy. According to claim 1,
The medical sutures include Polydioxanone, Monocryl, polycarprolactone, Poly(glycolic acid), and Poly(lactic-co-glycolic acid). )), a medical suture, characterized in that it consists of one or more of the following. According to claim 1,
The medical suture is characterized in that it is made of one or more of polypropylene, nylon, and polytetrafluoroethylene.

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