KR101688020B1 - Medical Suture and Producing Method for the Same - Google Patents

Medical Suture and Producing Method for the Same Download PDF

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Publication number
KR101688020B1
KR101688020B1 KR1020150068056A KR20150068056A KR101688020B1 KR 101688020 B1 KR101688020 B1 KR 101688020B1 KR 1020150068056 A KR1020150068056 A KR 1020150068056A KR 20150068056 A KR20150068056 A KR 20150068056A KR 101688020 B1 KR101688020 B1 KR 101688020B1
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South Korea
Prior art keywords
medical suture
protrusion
medical
suture
mold
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KR1020150068056A
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Korean (ko)
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KR20160134269A (en
Inventor
김경균
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(주)리젠바이오참
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06166—Sutures
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/02—Heat treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06166—Sutures
    • A61B2017/06176—Sutures with protrusions, e.g. barbs

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Materials For Medical Uses (AREA)

Abstract

The present invention relates to a medical suture having a circular cross section and a method of manufacturing the same. The method includes a first step of injecting a raw material for a medical suture into a mold constituted by a mold cavity portion and a slide mold insert portion, A third step of injection molding a medical suture having a groove and a protrusion on a surface thereof through a second step of bonding the slide mold to the medical suture so that the glass transition point is lower than the melting point of the raw material of the medical suture; A fourth step of stretching at a temperature of not less than a temperature and a melting point or less and a fifth step of performing heat treatment for removing residual moisture in the medical suture using nitrogen or argon gas in the stretched medical suture, As a medical suture manufactured by the above-described method, a suitable strength and flexibility When grooves and protrusions are formed, the protrusions are inserted in the opposite direction, and the tissue is fixed in the opposite direction. The physical stimulation is facilitated according to the movement. The productivity and work efficiency are increased. The protrusion is formed on the opposite side of the groove The time required for absorption into the human body is constant. Further, it is possible to minimize the time and process required for manufacturing the medical suture, and to easily change the shape and the projection angle of the groove and the projection.

Description

Technical Field [0001] The present invention relates to a medical suture,

More particularly, the present invention relates to a medical suture and a method of manufacturing the same, and more particularly, a flexible suture and a protrusion are formed on a surface of a medical suture through a slide die to fix a tissue in a direction opposite to insertion of a protrusion The present invention relates to a medical suture used for soft tissue regeneration, facial elevation, wrinkle forming, and the like, and a method of manufacturing the medical suture.

Generally, biodegradable sutures are frequently used for surgical and cosmetic surgery. They are natural sutures that can be decomposed naturally in the human body. They have strength, flexibility, bioabsorbability, biocompatibility and so on. Since the mid 1990s, Is being actively developed. In addition, the demand for biodegradable medical sutures is also rapidly increasing due to the rapid increase in cosmetic surgery. Biodegradable medical sutures include microbial production polymers, synthetic polymers, and natural polymers. In recent years, synthetic polymers such as polyclicolide, poly (lactide), and polygrapholactone have been increasingly used.

A medical thread having a visible protrusion on the surface of a thread disclosed in Korean Utility Model Registration No. 20-0320005 is flawed with a knife on the surface of a nylon or a prolene suture excellent in tensile strength to form a thorn- And are arranged in a direction facing the irregular direction or a direction facing the prongs inclined to the center. The medical room having the visible protrusions formed on the surface of the thread formed as described above has a problem in that the protrusion is formed on the surface of the medical room through the cutting operation and thus the manufacturing time and efficiency are reduced and the protrusion is damaged . In addition, since the shape and size of the protrusions are limited, there is a problem that the tissue fixing force is lowered when the protrusions are inserted into human tissues.

Also, the medical suture disclosed in Korean Utility Model Registration No. 20-0344226 does not disclose a specific method for forming the protrusion, but the protrusion is also formed on the surface of the suture by cutting. This also causes the same problem as described above.

Registered Utility Model No. 20-0320005 (July 16, 2003) Korean Registered Utility Model No. 20-0344226 (Feb. 24, 2004) Korean Patent Registration No. 10-0346595 (July 16, 2002)

In order to solve the above-mentioned problems, in the present invention, grooves and protrusions having appropriate strength and flexibility are formed on the surface without performing a cutting operation through a slide die, and when protrusions are inserted into the tissue of the human body, And a physical stimulation is easily caused according to the movement, and productivity and work efficiency are increased, and a method for manufacturing the medical suture.

A method of manufacturing a medical suture having a circular cross section as a structure for achieving the object, the method comprising: a first step of introducing a raw material of a medical suture into a mold composed of a mold cavity portion and a slide mold insert portion; A third step of injection molding a medical suture having a groove and a protrusion on the surface through a second step of coupling the slide mold to insert the mold projection and a third step of melting and melting the raw material of the medical suture through the first and second steps, A fourth step of stretching at a temperature lower than or equal to the glass transition temperature of the point and below the melting point, and a fifth step of performing heat treatment to remove residual moisture in the medical suture using nitrogen or argon gas in the stretched medical suture .

In another aspect of the present invention, the raw material of the medical suture 10 is a bioabsorbable medical polymer composed of any one selected from polydioxanone, polylactic acid, polyglycolic acid, and copolymers thereof, The projection angle (A) is 20 ° to 80 °.

According to still another aspect of the present invention, there is provided a medical suture including a suture and a protruding portion extending in a direction (0 占, 72 °) and is a medical suture manufactured as described above.

As described above, the medical suture and the method of manufacturing the same according to the present invention form grooves and projections having appropriate strength and flexibility on the surface without requiring a cutting process, and when the tissue is inserted into the tissue of the human body, The physical stimulation is facilitated according to the movement, the productivity and the working efficiency are increased, and the protrusion is formed on the opposite side of the groove, so that the time required for absorption into the human body is constant. Further, it is possible to minimize the time and process required for manufacturing the medical suture, and to easily change the shape and the projection angle of the groove and the projection.

1 is a side view of a conventional medical suture;
2 (a) and 2 (b) are respectively a top view and a cross-sectional view of the medical suture according to the first embodiment of the present invention.
3 is a conceptual view of a method of manufacturing a medical suture according to a first embodiment of the present invention.
4A and 4B are respectively a top view and a cross-sectional view of a medical suture according to a second embodiment of the present invention.
5 is a conceptual view of a method of manufacturing a medical suture according to a second embodiment of the present invention.
6A and 6B are top views of medical sutures and other embodiments according to the present invention.

2 is a top view and a cross-sectional view of a medical suture according to a first embodiment of the present invention, and FIG. 3 is a conceptual view of a method of manufacturing a medical suture according to a first embodiment of the present invention, As follows.

A method of manufacturing a medical suture having a circular cross section, comprising the steps of: (S10) injecting a raw material of a medical suture (10) into a mold (M) comprising a mold cavity (M1) and a slide mold insert (M2); A second step S20 of coupling the slide mold S so that the slide mold protrusion S1 is inserted into the slide mold inserting portion M2; A third step S30 of injecting and molding a medical suture 10 having a groove 11 and a protruding portion 12 on the surface of the medical suture 10 through a through hole , A fourth step (S40) of stretching at a temperature below the melting point; And a fifth step (S50) of performing a heat treatment for removing residual moisture in the medical suture (10) by using nitrogen or argon gas in the stretched medical suture (10). The medical suture . At this time, the slide mold S is engaged with and separated from the mold M in the direction of the arrow shown in Fig.

4 (a) and 4 (b) are a top view and a cross-sectional view, respectively, of a medical suture according to a second embodiment of the present invention. FIG. 5 is a conceptual view of a method for manufacturing a medical suture according to a second embodiment of the present invention. The slide mold protrusion S1 passes through the medical suture 10 and two mold recesses M1 are formed adjacent to each of the slide mold inserting portions M2. The slide mold protrusion S1 formed in the slide die S may be formed through the medical suture 10 by constructing as described above. Accordingly, the penetrating portion of the medical suture 10 may be formed as a groove portion 11 and two protruding portions 12 are respectively formed around the penetrating portion.

In addition, the raw material of the medical suture 10 used herein is a bioabsorbable medical polymer composed of any one selected from polydioxanone, polylactic acid, polyglycolic acid and copolymers thereof. In addition, it is possible to apply a material capable of being injected into a suture that can be naturally decomposed in a known human body.

The stretching and heat treatment method in the fourth step S40 and the fifth step S50 is disclosed in Korean Patent Registration No. 10-0346595, a molded article using the same, and a method for producing the molded article And various other known methods including a method that is known in the art can be applied.

The protrusion angle A between the medical suture 10 and the protruding portion 12 is 20 ° to 80 °. Referring to FIG. 2b, the protrusion 12 is formed opposite to the inserting direction, The tissue can be fixed in the opposite direction to the human body. In addition, the groove 11 is formed on the opposite side along the extension of the center of the inclined protrusion 12, so that the medical suture 10 can be inserted into the human body and the decomposition time can be kept constant.

6 (a) and 6 (b) are top views of a medical suture and other embodiments according to the present invention. Referring to FIG. 6, the groove 11 and the protruding portion 12 are inclined with respect to a central point of the medical suture 10 Direction is 180 °, three directions are 120 °, four directions are 90 °, and five directions are 72 °. Depending on the application, depending on the section diameter of the medical suture 10, it can be selected depending on the region to be inserted. Further, the number and arrangement of the slide molds S can be easily adjusted according to the protruding portions 12.

Since the medical suture manufactured by the above-described method can be produced only by the injection process through the mold without the cutting process, it is possible to minimize the time and process time required for manufacturing the medical suture and to reduce the shape of the groove 11 and the protrusion 12 And the projection angle (A) can be easily changed.

1, the medical suture 10 can be formed in the forward and backward directions on the basis of the direction in which the protrusion 12 is inserted, as shown in FIG.

Although the present invention has been shown and described with respect to specific embodiments and applications thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with knowledge will know easily.

10. Medical suture 11. Groove
12. Projection A. Turning angle
M. Mold M1. Mold cavity
M2. Slide mold insert S. Slide mold
S1. Slide mold projection S10. Step 1
S20. Second step S30. Step 3
S40. Fourth step S50. Step 5

Claims (6)

A method of manufacturing a medical suture having a circular cross section,
A first step S10 of feeding a raw material of the medical suture 10 to a mold M constituted by a mold cavity M1 and a slide mold insert M2;
The slide mold S is engaged so that the slide mold protrusion S1 is inserted into the slide mold insertion portion M2 so that the slide mold protrusion S1 forms the groove portion 11 in the medical suture 10, A second step S20 in which the raw material of the medical suture 10 pushed by the mold protrusion S1 is inserted into the mold cavity M1 to generate the protrusion 12;
A third step S30 of injecting and molding the medical suture 10 having the groove 11 and the protrusion 12 on the surface through the first step S10 and the second step S20;
A fourth step (S40) of stretching the medical suture (10) at a temperature not higher than the melting point of the raw material of the medical suture (10) and not higher than the glass transition temperature and the melting point; And
And a fifth step (S50) of performing heat treatment for removing residual moisture in the medical suture (10) by using nitrogen or argon gas in the stretched medical suture (10). Gt; delete The method according to claim 1,
Wherein the raw material of the medical suture (10) is a bioabsorbable medical polymer composed of any one selected from polydioxanone, polylactic acid, polyglycolic acid, and copolymers thereof. The method according to claim 1,
Wherein the protrusion angle (A) between the medical suture (10) and the protrusion (12) is 20 ° to 80 °. The method according to claim 1,
The groove portion 11 and the protruding portion 12 are arranged in a direction (0 DEG), two directions (180 DEG), three directions (120 DEG), four directions (90 DEG), five directions (72 DEG). ≪ / RTI > A medical suture produced by any one of claims 1, 3, 4, and 5.



KR1020150068056A 2015-05-15 2015-05-15 Medical Suture and Producing Method for the Same KR101688020B1 (en)

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KR101688020B1 true KR101688020B1 (en) 2016-12-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190081205A (en) * 2017-12-29 2019-07-09 주식회사 동방메디컬 Yarn for lifting a skin and manufacturing method thereof
WO2023158009A1 (en) * 2022-02-21 2023-08-24 메디퓨처스 주식회사 Production method for double-layer medical thread having improved tensile strength

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180131803A (en) 2017-06-01 2018-12-11 한국과학기술연구원 Biodegradable stent and preparation method thereof
KR101936719B1 (en) * 2017-09-12 2019-04-10 주식회사 씨엔오테크 Surgical suture mold

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101057376B1 (en) * 2010-10-20 2011-08-17 한스바이오메드 주식회사 Bioabsorbable suture having barbed structures on the surface and the method of its manufacture
EP2517634A2 (en) 2011-04-29 2012-10-31 Tyco Healthcare Group LP Apparatus and method of forming barbs on a suture
KR101432497B1 (en) * 2013-09-27 2014-08-25 유원석 Fixed barbed suture

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DE69433340T2 (en) 1993-09-09 2004-08-12 Kanebo, Ltd. BIODEGRADABLE COPOLYESTER, MOLDED PART MADE THEREOF AND METHOD FOR PRODUCING THE MOLDED PART
KR200320005Y1 (en) 2003-03-10 2003-07-16 이원석 Thorny Sutures
KR200344226Y1 (en) 2003-12-04 2004-03-11 이규식 Suture material for medical treatment
JP5580116B2 (en) * 2010-06-07 2014-08-27 矢崎総業株式会社 Manufacturing method of resin molded product by injection molding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101057376B1 (en) * 2010-10-20 2011-08-17 한스바이오메드 주식회사 Bioabsorbable suture having barbed structures on the surface and the method of its manufacture
EP2517634A2 (en) 2011-04-29 2012-10-31 Tyco Healthcare Group LP Apparatus and method of forming barbs on a suture
KR101432497B1 (en) * 2013-09-27 2014-08-25 유원석 Fixed barbed suture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190081205A (en) * 2017-12-29 2019-07-09 주식회사 동방메디컬 Yarn for lifting a skin and manufacturing method thereof
KR102109085B1 (en) 2017-12-29 2020-05-12 주식회사 동방메디컬 Yarn for lifting a skin and manufacturing method thereof
WO2023158009A1 (en) * 2022-02-21 2023-08-24 메디퓨처스 주식회사 Production method for double-layer medical thread having improved tensile strength

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