KR102133818B1 - Anti-migration stent - Google Patents

Anti-migration stent Download PDF

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KR102133818B1
KR102133818B1 KR1020180042807A KR20180042807A KR102133818B1 KR 102133818 B1 KR102133818 B1 KR 102133818B1 KR 1020180042807 A KR1020180042807 A KR 1020180042807A KR 20180042807 A KR20180042807 A KR 20180042807A KR 102133818 B1 KR102133818 B1 KR 102133818B1
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expansion
cylindrical body
expansion pipe
stent
space
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KR1020180042807A
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KR20190119402A (en
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신경민
정환훈
김경진
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(주)태웅메디칼
신경민
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Priority to KR1020180042807A priority Critical patent/KR102133818B1/en
Priority to PCT/KR2019/003947 priority patent/WO2019198969A1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A61F2/07—Stent-grafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/848—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents having means for fixation to the vessel wall, e.g. barbs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/02—Inorganic materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/02—Inorganic materials
    • A61L31/022—Metals or alloys
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/08—Materials for coatings
    • A61L31/10—Macromolecular materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A61F2/07—Stent-grafts
    • A61F2002/075—Stent-grafts the stent being loosely attached to the graft material, e.g. by stitching
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0014—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0018—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in elasticity, stiffness or compressibility
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0039—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in diameter

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
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  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
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  • Oral & Maxillofacial Surgery (AREA)
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  • Inorganic Chemistry (AREA)
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Abstract

본 발명은 체액이 이동할 수 있는 공간을 충분히 확보해주면서, 동시에 이동하는 체액의 압력 및 인체의 흔들림 및 외부에서 발생되는 외력에 의해 병변부위에서 미끄러지지 않도록 해주는 미끄럼 방지용 스텐트에 관한 것으로써, 더욱 상세하게는 초탄성 형상기억합금으로 이루어진 와이어를 중공식 원통형의 형상으로 그물망 형태로 엮거나 교차시켜서 다수의 제1공간부를 형성하며, 양쪽 끝에는 원주를 따라 다수의 절곡부를 형성한 원통형 몸체를 포함하되, 원통형 몸체에는 원통형 몸체보다 지름이 크고, 제1공간부보다 크기가 큰 제2공간부를 다수로 가진 제1확관부를 형성하고, 제1확관부에는 제1확관부와 지름이 같고 제1공간부와 크기가 유사한 제3공간부를 다수로 가진 제2확관부를, 원통형 몸체에 인접한 제1확관부의 양쪽 끝에 형성하면서 열처리하며, 제2확관부는 제1확관부보다 강한 탄성을 가지게 되는 것을 특징으로 하는 미끄럼 방지용 스텐트에 관한 것이다.The present invention relates to a stent for preventing slipping, which ensures sufficient space for the body fluid to move, and at the same time prevents the body fluid from sliding at the lesion site due to the pressure of the body fluid and the shaking of the body and external force generated from the outside. A plurality of first spaces are formed by interweaving or crossing wires made of a super-elastic shape memory alloy in the form of a hollow cylindrical shape or crossing each other, and at both ends, a cylindrical body including a plurality of bent portions is formed along a circumference. In the first expansion tube portion having a larger diameter than the cylindrical body, and a plurality of second space parts larger than the first space part, the first expansion tube portion having the same diameter as the first expansion tube portion and the first space portion size The second expansion pipe having a plurality of similar third space portions, heat treatment while forming at both ends of the first expansion pipe portion adjacent to the cylindrical body, and the second expansion pipe portion has a stronger elasticity than the first expansion pipe portion. It relates to a stent for preventing slipping.

Description

미끄럼 방지용 스텐트{Anti-migration stent}Anti-migration stent {Anti-migration stent}

본 발명은 체내의 내강에 발생된 협착 또는 폐색되는 병변부위를 확장시켜주는 미끄럼 방지용 스텐트에 관한 것으로써, 특히 체액이 이동할 수 있는 공간을 충분히 확보해주면서, 동시에 이동하는 체액의 압력 및 인체의 흔들림 및 외부에서 발생되는 외력에 의해 병변부위에서 미끄러지지 않는 미끄럼 방지용 스텐트에 관한 것이다.The present invention relates to a stent for non-slip that expands a stenosis or occluded lesion site generated in a lumen in the body, in particular, while ensuring sufficient space for the body fluid to move, and at the same time, the pressure of body fluid to move and the shaking of the human body and The present invention relates to a stent for preventing slipping, which does not slip on a lesion due to external force generated from the outside.

일반적으로, 인체의 요도, 요관 등과 같은 체내의 내강에 협착 또는 폐색되는 병변부위가 발생하면, 체액을 이동시켜주는 체내의 내강으로써의 고유의 기능이 저하되는 문제점이 발생하였다. In general, when a lesion site that is narrowed or occluded in the lumen of the body such as the human urethra, ureter and the like occurs, there is a problem in that the intrinsic function as a lumen in the body that moves body fluids is deteriorated.

그래서, 협착 또는 폐색되는 병변부위의 위치로 스텐트를 삽입하여 좁아진 체내의 내강을 확장시켰다.So, the stent was inserted into the location of the lesion site that was stenosis or occlusion, and the lumen in the narrowed body was expanded.

이와 관련하여, 특허문헌1은 초탄성 형상기억합금 와이어를 교차되게 엮어 형성한 중공식 원통형 몸체를 갖는 스텐트에 있어서, 상기 원통형 몸체의 외측에 내강 조직이 성장하여 스텐트를 지지할 수 있는 공간을 확보하도록 링형의 요홈을 길이 방향을 따라 적어도 하나 이상 형성한 것을 특징으로 하는 형상기억합금 와이어를 이용한 미끄럼 방지형 스텐트를 제공하였다.In this regard, Patent Literature 1 is a stent having a hollow cylindrical body formed by interweaving superelastic shape memory alloy wires to secure a space to support the stent by growing lumen tissue outside the cylindrical body. In order to provide a non-slip type stent using a shape memory alloy wire, at least one ring-shaped groove is formed along the longitudinal direction.

하지만, 특허문헌1의 경우, 요홈에 의해 미끄럼 방지형 스텐트의 지름이 일부분 축소되었기 때문에, 미끄럼 방지형 스텐의 내부 공간이 작아졌었다.However, in the case of Patent Document 1, since the diameter of the non-slip stent was partially reduced by the groove, the internal space of the non-slip stent was reduced.

즉, 체액의 이동이 미끄럼 방지형 스텐트의 내부에서 원활하게 이루어지지 않을 우려가 있었다.That is, there is a fear that the movement of body fluids may not be smoothly performed inside the anti-slip type stent.

특허문헌1 : 국내 공개특허 제10-2015-0051646호(2015. 05. 13. 공개)Patent Literature 1: Domestic Patent Publication No. 10-2015-0051646 (published on May 13, 2015)

이에 본 발명은, 체액이 이동할 수 있는 공간을 충분히 확보해주면서, 동시에 이동하는 체액의 압력 및 인체의 흔들림 및 외부에서 발생되는 외력에 의해 병변부위에서 미끄러지지 않는 미끄럼 방지용 스텐트를 제공하는데 목적이 있다.Accordingly, an object of the present invention is to provide a stent for preventing slipping, which is not slipped on a lesion site by sufficiently securing a space in which the body fluid can move, while simultaneously moving the body fluid under pressure and shaking the body and external force generated from the outside.

상기한 바와 같은 목적을 달성하기 위해서 본 발명은, 체내의 내강에 발생된 협착 또는 폐색되는 병변부위를 확장시켜주는 스텐트에 있어서, 초탄성 형상기억합금으로 이루어진 와이어를 중공식 원통형의 형상으로 그물망 형태로 엮거나 교차시켜서 다수의 제1공간부를 형성하며, 양쪽 끝에는 원주를 따라 다수의 절곡부를 형성한 원통형 몸체를 포함하되, 원통형 몸체에는 원통형 몸체보다 지름이 크고, 제1공간부보다 크기가 큰 제2공간부를 다수로 가진 제1확관부를 형성하고, 제1확관부에는 제1확관부와 지름이 같고 제1공간부와 크기가 유사한 제3공간부를 다수로 가진 제2확관부를, 원통형 몸체에 인접한 제1확관부의 양쪽 끝에 형성하면서 열처리하며, 제2확관부는 제1확관부보다 강한 탄성을 가지게 되는 것을 특징으로 하는 미끄럼 방지용 스텐트를 제공한다.In order to achieve the above object, the present invention, in the stent to expand the stenosis or occluded lesion site generated in the lumen in the body, the wire made of a superelastic shape memory alloy in the form of a mesh with a hollow cylindrical shape A plurality of first space parts are formed by interweaving or crossing with each other, and at both ends, a cylindrical body including a plurality of bent parts is formed along the circumference. A first expansion tube having a plurality of two spaces is formed, and the first expansion tube has a second expansion tube having a plurality of third spaces having the same diameter as the first expansion tube and having a similar size to the first spacer, and a cylindrical body The heat treatment while forming at both ends of the first expansion pipe portion adjacent to, and the second expansion pipe portion provides a non-slip stent characterized in that it has a stronger elasticity than the first expansion pipe portion.

본 발명은 원통형 몸체보다 제1,2확관부의 지름이 크기 때문에, 체액이 이동할 수 있는 공간을 종래보다 충분히 확보해주는 효과가 있다.In the present invention, since the diameter of the first and second expansion pipes is larger than that of the cylindrical body, there is an effect of sufficiently securing a space in which body fluid can move, as compared to the prior art.

즉, 체액의 이동이 종래보다 원활하게 이루어지는 효과가 있다.That is, there is an effect that the movement of body fluids is smoother than before.

본 발명은 제2확관부보다 탄성이 약한 제1확관부가 변형되고, 제1확관부보다 탄성이 강한 제2확관부가 변형되지 않으면서 병변부위에 종래와 다르게 걸리는 효과가 있다.The present invention has an effect that the first expansion tube portion, which is less elastic than the second expansion tube portion, is deformed, and the second expansion tube portion, which is more elastic than the first expansion tube portion, is not deformed, and the lesion portion is differently applied.

즉, 이동하는 체액의 압력 및 인체의 흔들림 및 외부에서 발생되는 외력에 의해 병변부위에서 미끄러지지 않는 효과가 있다.That is, there is an effect that does not slip on the lesion site due to the pressure of the moving body fluid and the shaking of the human body and external force generated from the outside.

또한, 이동하는 체액의 압력 및 인체의 흔들림 및 외부에서 발생되는 외력에 따라 탄성이 약한 제1확관부가 유연하게 변형되어, 체내의 내강에 대한 자극을 줄여주는 효과가 있다.In addition, according to the pressure of the moving body fluid and the shaking of the human body and the external force generated from the outside, the first expansion tube having weak elasticity is flexibly deformed, thereby reducing irritation to the lumen in the body.

본 발명은 제1확관부가 다수로 형성되어 병변부위에 더 걸리기 때문에, 병변부위에서 더 미끄러지지 않는 효과가 있다.The present invention has the effect that the first expansion tube portion is formed in a large number, so that it takes more to the lesion site, so that it does not slip more on the lesion site.

또한, 병변부위의 면적에 대응할 수 있는 효과가 있다.In addition, there is an effect that can correspond to the area of the lesion site.

본 발명은 제2확관부가 제1확관부에 다수로 형성되기 때문에, 이동하는 체액의 압력 및 인체의 흔들림 및 외부에서 발생되는 외력에 의해 다수의 제2확관부가 병변부위에 여러번 걸려서 미끄러지지 않는 효과가 있다.In the present invention, since the second expansion tube portion is formed in a large number of the first expansion tube portion, the plurality of second expansion tube portions do not slip on the lesion site several times due to the pressure of the moving body fluid, the shaking of the human body, and external force generated from the outside. It works.

또한, 다수로 형성된 제2확관부에 의해 제1확관부가 분할되기 때문에, 병변부위의 누르는 압력이 분산되면서 제1확관부의 변형이 줄어들어 체액이 이동할 수 있는 공간을 더 확보할 수 있는 효과가 있다.In addition, since the first expansion tube portion is divided by the second expansion tube portion formed in a large number, the pressure of the lesion is dispersed, and the deformation of the first expansion tube portion is reduced, so that the effect of securing a space for body fluid to move is further secured. have.

즉, 병변부위의 누르는 압력에 대응할 수 있는 효과가 있다.That is, there is an effect that can respond to the pressing pressure of the lesion site.

본 발명은 원통형 몸체보다 탄성이 약한 연장부 및, 실리콘 재질의 제1피막층보다 탄성이 약한 PTFE 재질의 제2피막층이 체내의 내강에서 굴곡진 부분에 맞게 유연하게 대응하여 변형되기 때문에, 체내의 내강에 대한 자극을 줄여주는 효과가 있다.In the present invention, since the extension portion having a weaker elasticity than the cylindrical body and the second coating layer of the PTFE material having a weaker elasticity than the first coating layer made of silicon are flexibly correspondingly deformed to fit the curved portion in the lumen of the body, the lumen in the body It has the effect of reducing irritation.

또한, 제1,2피막층이 병변부위의 성장을 막아주며, 체액의 이탈을 막아서 체내의 내강에서 체액이 신속하게 이동할 수 있게 해주는 효과가 있다.In addition, the first and second coating layer prevents the growth of the lesion site, and prevents the separation of body fluids, so that the body fluid can quickly move in the lumen of the body.

본 발명은 당김줄에 의해 스텐트 제거가 신속하게 이루어지는 효과가 있다.The present invention has the effect that the stent is removed quickly by pulling.

본 발명은 제1,2확관부가 각각의 환자의 병변부위에 맞게 고정될 수 있도록, 전체적으로 사각형 또는 타원형과 유사한 형태로 형성되는 효과가 있다.The present invention has the effect that the first and second dilated portions are formed in a shape similar to a rectangle or an oval as a whole so that they can be fixed to each patient's lesion.

본 발명은 실리콘을 대신해 PU 재질의 제1피막층을 사용하여, 환자의 병변부위에 대응할 수 있는 효과가 있다.The present invention has the effect of using a first coating layer of PU material instead of silicon, to respond to the lesion site of the patient.

본 발명은 실리콘을 대신해 실리콘보다 탄성이 약한 PTFE 재질의 제1피막층을 사용하여, 병변부위의 누르는 압력이 각각의 환자마다 다르더라도 제1확관부가 유연하게 대응하여 변형되게 해주는 효과가 있다.The present invention has the effect of using the first coating layer made of PTFE material, which is less elastic than silicone, instead of silicone, so that the first expansion tube can be flexibly deformed even if the pressure on the lesion is different for each patient.

도 1 내지 도 3은 본 발명의 실시예를 따른 미끄럼 방지용 스텐트,
도 4 및 도 5는 본 발명의 다른 실시예를 따른 미끄럼 방지용 스텐트,
도 6 및 도 7은 본 발명의 또 다른 실시예를 따른 미끄럼 방지용 스텐트,
도 8은 본 발명의 실시예를 따른 제1,2확관부의 다른 형태도이다.1 to 3 is a stent for anti-slip according to an embodiment of the present invention,
4 and 5 is a stent for anti-slip according to another embodiment of the present invention,
6 and 7 is a stent for anti-slip according to another embodiment of the present invention,
8 is another type view of the first and second expanding portions according to an embodiment of the present invention.

이하, 첨부 도면을 참조하여 본 발명의 구체적인 실시예의 구성을 살펴보기로 한다.Hereinafter, a configuration of a specific embodiment of the present invention will be described with reference to the accompanying drawings.

도 1 내지 도 8에 도시된 바와 같이, 본 발명의 다양한 실시예를 따른 미끄럼 방지용 스텐트(100)는 카데터 등과 같은 스텐트 시술장치에 의해 인체의 요도, 요관 등과 같은 체내의 내강(2)에 삽입되어, 상기 체내의 내강(2)에 발생된 협착 또는 폐색되는 병변부위(3)를 확장시킬 때 사용된다.1 to 8, the anti-slip stent 100 according to various embodiments of the present invention is inserted into the lumen 2 in the body, such as the urethra of the human body and the ureter by a stent treatment device such as a catheter As it is, it is used when expanding the narrowed or occluded lesion 3 in the lumen 2 in the body.

그리고, 도 1 내지 도 3에 도시된 바와 같이, 본 발명의 실시예를 따른 상기 미끄럼 방지용 스텐트(100)는 초탄성 형상기억합금으로 이루어진 와이어(1)를 중공식 원통형의 형상으로 그물망 형태로 엮거나 교차시켜서 다수의 제1공간부(11)가 형성되며, 양쪽 끝에는 원주를 따라 다수의 절곡부(12)가 형성된 원통형 몸체(10)가 포함된다.And, as shown in Figures 1 to 3, the anti-slip stent 100 according to an embodiment of the present invention weave the wire 1 made of a super-elastic shape memory alloy in the form of a hollow cylindrical mesh A plurality of first space portions 11 are formed by crossing or crossing, and at both ends, a cylindrical body 10 having a plurality of bent portions 12 along a circumference is included.

그리고, 상기 원통형 몸체(10)에는 상기 원통형 몸체(10)보다 지름이 크고, 제1공간부(11)보다 크기가 큰 제2공간부(21)를 다수로 가진 제1확관부(20)가 형성된다.In addition, the cylindrical body 10 has a first expansion pipe 20 having a plurality of second space portions 21 having a larger diameter than the cylindrical body 10 and larger in size than the first space portion 11. Is formed.

여기서, 상기 제1확관부(20)는 원통형 몸체(10)에 미리 정해진 간격으로 2개 형성된다Here, two first expansion pipes 20 are formed at predetermined intervals in the cylindrical body 10.

그리고, 상기 제1확관부(20)에는 상기 제1확관부(20)와 지름이 같고, 제1공간부(11)와 크기가 유사한 제3공간부(31)를 다수로 가진 제2확관부(30)가 형성된다.In addition, the first expansion pipe 20 has a second expansion pipe having a plurality of third space portions 31 having the same diameter as the first expansion pipe 20 and having a size similar to that of the first expansion pipe 20. 30 is formed.

여기서, 상기 제2확관부(30)는 원통형 몸체(10)에 인접한 제1확관부(20)의 양쪽 끝에 형성된다.Here, the second expansion pipe portion 30 is formed at both ends of the first expansion pipe portion 20 adjacent to the cylindrical body 10.

그리고, 상기 원통형 몸체(10)는 한쪽 길이가 연장되어 연장부(40)가 형성된다.In addition, the cylindrical body 10 has one length extended to form an extension 40.

여기서, 상기 연장부(40)에는 제2공간부(21)와 크기가 유사한 제4공간부(41)가 다수로 형성된다.Here, a plurality of fourth space portions 41 having a similar size to the second space portion 21 are formed in the extension portion 40.

그리고, 상기 제1,2확관부(20)(30)는 전체적으로 사각형과 유사한 형태로 형성되지만, 도 8과 같이 전체적으로 타원형과 유사한 형태로 형성될 수 있다.In addition, although the first and second expansion pipes 20 and 30 are formed in a shape similar to a rectangle as a whole, they may be formed in a shape similar to an oval as shown in FIG. 8.

또한, 상기 제1,2확관부(20)(30)는 원통형 몸체(10)보다 2mm 이상의 더 큰 지름으로 형성된다.In addition, the first and second expansion pipes 20 and 30 are formed with a larger diameter of 2 mm or more than the cylindrical body 10.

그리고, 상기 원통형 몸체(10) 및 제1,2확관부(20)(30) 및 연장부(40)는 열처리 된다.And, the cylindrical body 10 and the first and second expansion pipes 20, 30 and the extension 40 are heat treated.

그리고, 상기 원통형 몸체(10) 및 제1확관부(20) 및 제2확관부(30)는 인체에 무해한 실리콘 재질의 제1피막층(50)이 형성되어, 제1,2,3공간부(11)(21)(31)가 폐쇄된다.In addition, the cylindrical body 10 and the first expansion tube 20 and the second expansion tube 30 are formed with a first coating layer 50 made of a silicon material that is harmless to the human body, so that the first, second, and third space parts ( 11) (21) (31) is closed.

여기서, 상기 원통형 몸체(10) 및 제1확관부(20) 및 제2확관부(30)는 실리콘 용액에 함침 또는 스프레이로 코팅되면서 실리콘 재질의 제1피막층(50)이 형성된다.Here, the cylindrical body 10 and the first expansion tube 20 and the second expansion tube 30 are coated with a silicon solution by impregnation or spraying, thereby forming a first coating layer 50 made of silicone.

또한, 상기 제1피막층(50)은 실리콘을 대신하여, 인체에 무해한 PU(Polyurethane) 또는 PTFE(Polytetrafluoroethylene) 재질로 이루어질 수 있다.In addition, the first coating layer 50 may be made of PU (Polyurethane) or PTFE (Polytetrafluoroethylene) material, which is harmless to the human body, instead of silicone.

또한, 상기 제1피막층(50)은 위에서 말한 실리콘 및 PU 및 PTFE와 다른 인체에 무해한 다양한 재질 등으로 이루어질 수도 있고, 이들을 사용함으로써 부드러움으로 인하여 접촉하는 인체에 대한 자극을 방지할 수 있게 된다.In addition, the first coating layer 50 may be made of various materials such as silicone and PU and PTFE as described above and other materials harmless to the human body, and by using them, it is possible to prevent irritation to the human body in contact due to the softness.

그리고, 상기 연장부(40)는 인체에 무해한 PTFE(Polytetrafluoroethylene) 재질의 제2피막층(51)이 형성되어, 제4공간부(41)가 폐쇄된다.Then, the extension portion 40 is formed of a second coating layer 51 made of a polytetrafluoroethylene (PTFE) material that is harmless to the human body, and the fourth space portion 41 is closed.

여기서, 상기 연장부(40)는 PTFE(Polytetrafluoroethylene)로 감싸지면서 PTFE 재질의 제2피막층(51)이 형성된다.Here, the extension portion 40 is wrapped with PTFE (Polytetrafluoroethylene), and a second coating layer 51 made of PTFE is formed.

그리고, 상기 제1피막층(50)과 원통형 몸체(10)의 한쪽 끝에 형성된 다수의 절곡부(12)는 인체에 무해한 당김줄(60)로 꿰매어지고, 상기 당김줄(60)은 원통형 몸체(10)에서 돌출된다.In addition, a plurality of bent portions 12 formed at one end of the first coating layer 50 and the cylindrical body 10 are sewn with a pulling line 60 that is harmless to the human body, and the pulling line 60 is a cylindrical body 10 ).

그리고, 도 4 및 도 5에 도시된 바와 같이, 본 발명의 다른 실시예를 따른 상기 미끄럼 방지용 스텐트(100)는 제1확관부(20)가 원통형 몸체(10)의 길이 방향을 따라 미리 정해진 간격으로 다수로 더 형성된다.And, as shown in Figures 4 and 5, the anti-slip stent 100 according to another embodiment of the present invention, the first expansion pipe 20 is a predetermined interval along the longitudinal direction of the cylindrical body 10 It is further formed into a number.

즉, 상기 제1확관부(20)는 체내의 내강(2)에 발생된 협착 또는 폐색되는 병변부위(3)의 면적에 대응할 수 있도록 다수로 형성된다.That is, the first expansion tube 20 is formed in a number to correspond to the area of the lesion site 3 that is occluded or occluded in the lumen 2 in the body.

여기서, 상기 원통형 몸체(10)는 제1확관부(20)가 다수로 형성될 수 있는 길이를 가진다.Here, the cylindrical body 10 has a length that can be formed in a number of first expansion tube 20.

그리고, 도 6 및 도 7에 도시된 바와 같이, 본 발명의 또 다른 실시예를 따른 상기 미끄럼 방지용 스텐트(100)는 제1확관부(20)의 양쪽 끝에 형성된 제2확관부(30)의 사이로, 상기 제2확관부(30)가 제1확관부(20)의 길이 방향을 따라 미리 정해진 간격으로 적어도 하나 이상으로 더 형성된다.And, as shown in Figures 6 and 7, the anti-slip stent 100 according to another embodiment of the present invention is between the second expansion pipe 30 formed at both ends of the first expansion pipe 20 , The second expansion pipe 30 is further formed at least one or more at predetermined intervals along the length direction of the first expansion pipe 20.

즉, 상기 제2확관부(30)는 체내의 내강(2)에 발생된 협착 또는 폐색되는 병변부위(3)의 누르는 압력에 대응할 수 있도록 다수로 형성된다.That is, the second expansion pipe 30 is formed in a number to respond to the pressing pressure of the stenosis or occluded lesion 3 generated in the lumen 2 in the body.

여기서, 상기 제1확관부(20)는 다수의 제2확관부(30)에 의해 분할된다.Here, the first expanding portion 20 is divided by a plurality of second expanding portions 30.

또한, 상기 제1확관부(20)는 제2확관부(30)가 다수로 형성될 수 있는 길이를 가진다.In addition, the first expansion tube 20 has a length in which the second expansion tube 30 can be formed in multiple numbers.

상기와 같이 구성된 본 발명의 작용 및 효과를 설명하면 다음과 같다.The operation and effects of the present invention configured as described above are as follows.

도 1 내지 도 3에 도시된 바와 같이, 상기 인체의 요도, 요관 등과 같은 체내의 내강(2)에 발생된 협착 또는 폐색되는 병변부위(3)로, 본 발명의 실시예를 따른 미끄럼 방지용 스텐트(100)를 카데터 등과 같은 스텐트 시술장치를 통해 삽입시켜 시술한다.1 to 3, the stent for preventing slipping according to an embodiment of the present invention is a stenosis or occluded lesion 3 generated in the lumen 2 in the body, such as the urethra and ureter of the human body. 100) is inserted through a stent treatment device such as a catheter.

그러면, 상기 원통형 몸체(10) 및 연장부(40)는 병변부위가 발생되지 않은 체내의 내강(2)에 밀착되며, 제1,2확관부(20)(30)는 협착 또는 폐색되는 병변부위(3)에 위치되면서 상기 병변부위(3)를 확장하게 된다.Then, the cylindrical body 10 and the extended portion 40 are in close contact with the lumen 2 in the body where no lesion site is generated, and the first and second expansion tubes 20 and 30 are constricted or occluded lesion sites. As it is located at (3), the lesion site 3 is expanded.

여기서, 상기 제1확관부(20)의 제2공간부(21)는 원통형 몸체(10)의 제1공간부(11)보다 크기가 크기 때문에, 상기 제1확관부(20)는 원통형 몸체(10)보다 약한 탄성을 가지게 된다.Here, since the second space portion 21 of the first expansion portion 20 is larger in size than the first space portion 11 of the cylindrical body 10, the first expansion portion 20 has a cylindrical body ( 10) It has a weaker elasticity.

그래서, 상기 제1확관부(20)는 병변부위(3)에 눌러져서 변형된다. 즉, 상기 제1확관부(20)의 지름은 작아지게 된다.So, the first expansion tube 20 is deformed by being pressed against the lesion site 3. That is, the diameter of the first expansion pipe 20 becomes small.

여기서, 상기 제2공간부(21)는 실리콘 재질의 제1피막층(50)에 의해 폐쇄되어서, 병변부위(3)가 삽입되지 않는다.Here, the second space portion 21 is closed by the first coating layer 50 made of silicon, so that the lesion portion 3 is not inserted.

또한, 상기 제2확관부(30)의 제3공간부(31)는 원통형 몸체(10)의 제1공간부(11)와 크기가 유사하기 때문에, 상기 제2확관부(30)는 제1확관부(20)보다 강한 탄성을 가지게 된다.In addition, since the third space portion 31 of the second expansion pipe 30 is similar in size to the first space portion 11 of the cylindrical body 10, the second expansion pipe 30 is the first It has a stronger elasticity than the expansion tube (20).

그래서, 상기 제2확관부(30)는 병변부위(3)에 눌러지지 않으면서 변형되지 않는다. 즉, 상기 제2확관부(30)의 지름은 원래 상태로 유지된다.So, the second expansion tube 30 is not deformed without being pressed against the lesion site 3. That is, the diameter of the second expansion pipe 30 is maintained in its original state.

여기서, 상기 제3공간부(31)는 실리콘 재질의 제1피막층(50)에 의해 폐쇄되어서, 병변부위(3)가 삽입되지 않는다.Here, the third space portion 31 is closed by the first coating layer 50 made of silicon, so that the lesion portion 3 is not inserted.

물론, 상기 병변부위(3)의 일부 및 상기 병변부위(3)가 발생되지 않은 체내의 내강(2)도, 상기 제1피막층(50)에 의해 폐쇄된 원통형 몸체(10)의 제1공간부(11) 및 제2피막층(51)에 의해 폐쇄된 연장부(40)의 제4공간부(41)로 삽입되지 않는다.Of course, a part of the lesion part 3 and the lumen 2 in the body where the lesion part 3 is not generated are also the first space part of the cylindrical body 10 closed by the first coating layer 50. It is not inserted into the fourth space portion 41 of the extension portion 40 closed by (11) and the second coating layer 51.

그리하여, 상기 병변부위(3)는 변형된 제1확관부(20)를 향해 들어가고, 변형되지 않은 제2확관부(30)는 상기 병변부위(3)를 향해 들어가게 된다.Thus, the lesion portion 3 enters the deformed first expansion portion 20 and the unmodified second expansion portion 30 enters the lesion portion 3.

즉, 상기 미끄럼 방지용 스텐트(100)는 제1,2확관부(20)(30)가 병변부위(3)를 확장시키면서 상기 병변부위(3)에 걸리게 되어, 체내의 내강(2)에 고정된다.That is, in the stent 100 for preventing slipping, the first and second expansion pipes 20 and 30 are caught in the lesion 3 while expanding the lesion 3, and are fixed to the lumen 2 in the body. .

그리고, 상기 제1,2확관부(20)(30)는 전체적으로 사각형과 유사한 형태로 형성되기 때문에, 병변부위(3)에 가파르게 걸리게 된다.In addition, since the first and second expansion pipes 20 and 30 are formed in a shape similar to a rectangle as a whole, they are steeply caught in the lesion 3.

여기서, 도 8에 도시된 바와 같이, 상기 제1,2확관부(20)(30)가 전체적으로 타원형과 유사한 형태로 형성되면, 병변부위(3)에 완만하게 걸리게 된다.Here, as shown in FIG. 8, when the first and second expansion pipes 20 and 30 are formed in a shape similar to an oval as a whole, the lesion 3 is gently caught.

그리고, 상기 연장부(40)의 제4공간부(41)는 제1확관부(20)의 제2공간부(21)와 크기가 유사하기 때문에, 상기 연장부(40)는 제1확관부(20)와 마찬가지로 원통형 몸체(10)보다 약한 탄성을 가지게 된다.In addition, since the fourth space portion 41 of the extension portion 40 is similar in size to the second space portion 21 of the first expansion portion 20, the extension portion 40 is the first expansion portion Like 20, it has a weaker elasticity than the cylindrical body 10.

또한, 상기 연장부(40)는 실리콘 재질의 제1피막층(50)보다 탄성이 약한 PTFE 재질의 제2피막층(51)이 형성되기 때문에, 인체의 요도, 요관 등과 같은 체내의 내강(2)에서 굴곡진 부분에 맞게 유연하게 대응하여 변형된다.In addition, since the extension portion 40 is formed of a second coating layer 51 made of a PTFE material having weaker elasticity than the first coating layer 50 made of silicon, the lumen 2 in the body such as the urethra of the human body, the ureter, etc. It is deformed by flexibly responding to a curved part.

즉, 상기 연장부(40)는 체내의 내강(2)에서 굴곡진 부분에 맞게 휘어진다.That is, the extension portion 40 is bent to fit the curved portion in the lumen 2 in the body.

그리고, 상기 제1피막층(50)은 실리콘을 대신하여 PU 재질로 이루어지면, 상기 실리콘과 마찬가지로 병변부위가 삽입되지 않도록 제1,2,3공간부(11)(21)(31)를 폐쇄해준다.In addition, when the first coating layer 50 is made of a PU material instead of silicon, the first, second, and third space portions 11, 21, and 31 are closed so that no lesion portion is inserted like the silicone. .

또한, 상기 제1피막층(50)은 실리콘을 대신하여 PTFE 재질로 이루어지면, 상기 실리콘과 마찬가지로 병변부위가 삽입되지 않도록 제1,2,3공간부(11)(21)(31)를 폐쇄해준다.In addition, when the first coating layer 50 is made of a PTFE material instead of silicon, the first, second, and third space portions 11, 21, 31 are closed so that no lesion portion is inserted like the silicone. .

여기서, 상기 제1피막층(50)은 실리콘보다 탄성이 약한 PTFE 재질로 이루어지기 때문에, 제1확관부(20)가 병변부위(3)에 눌러져서 변형되는 것을 상기 실리콘보다 용이하게 해준다.Here, since the first coating layer 50 is made of a PTFE material having a weaker elasticity than silicon, it is easier to deform the first expansion tube 20 by being pressed against the lesion 3 than the silicon.

한편, 도 4 및 도 5에 도시된 바와 같이, 본 발명의 다른 실시예를 따른 상기 미끄럼 방지 스텐트(100)는 제1확관부(20)가 원통형 몸체(10)의 길이 방향을 따라 미리 정해진 간격으로 다수로 형성되기 때문에, 다수의 상기 제1확관부(2)가 체내의 내강(2)에 발생된 협착 또는 폐색되는 병변부위(3)의 면적에 맞게 상기 병변부위(3)를 확장시키면서 걸리게 된다.On the other hand, as shown in Figures 4 and 5, the non-slip stent 100 according to another embodiment of the present invention, the first expansion pipe 20 is a predetermined distance along the longitudinal direction of the cylindrical body 10 Since it is formed in a large number, it is caught while expanding the lesion part 3 in accordance with the area of the lesion part 3 that is narrowed or occluded in the lumen 2 in the body. do.

그리고, 도 6 및 도 7에 도시된 바와 같이, 본 발명의 또 다른 실시예를 따른 상기 미끄럼 방지 스텐트(100)는 제2확관부(30)가 제1확관부(20)의 길이 방향을 따라 미리 정해진 간격으로 적어도 하나 이상으로 더 형성되기 때문에, 다수의 상기 제2확관부(30)가 병변부위(3)를 향해 들어가게 된다.And, as shown in Figures 6 and 7, the anti-slip stent 100 according to another embodiment of the present invention is the second expansion pipe 30 along the longitudinal direction of the first expansion pipe (20) Since it is further formed at least one or more at predetermined intervals, a plurality of the second expansion pipes 30 enter the lesion site 3.

또한, 상기 병변부위(3)는 다수의 제2확관부(30)에 의해 분할된 제1확관부(20)를 향해 분할되어 들어가게 된다.In addition, the lesion portion 3 is divided into a first expansion portion 20 divided by a plurality of second expansion portions 30.

즉, 상기 제1확관부(20)에 대한 병변부위(3)의 누르는 압력이 분산되어, 상기 제1확관부(20)의 변형이 줄어든다.That is, the pressing pressure of the lesion part 3 with respect to the first expanding part 20 is distributed, so that the deformation of the first expanding part 20 is reduced.

그래서, 상기 체내의 내강(2)에 발생된 협착 또는 폐색되는 병변부위(3)에 대한 치료가 완료되면, 도 3에 도시된 바와 같이 카데터 등과 같은 스텐트 시술장치로 당김줄(60)을 잡아당긴다.So, when the treatment for the stenosis or occluded lesion 3 generated in the lumen 2 in the body is completed, as shown in FIG. 3, the pulling line 60 is held by a stent treatment device such as a catheter. Pull.

그러면, 본 발명의 상기 미끄럼 방지 스텐트(100)는 전체 길이가 늘어나면서 부피는 축소되어, 카데터 등과 같은 스텐트 시술장치를 통해 체내의 내강(2)에서 용이하게 인체 밖으로 배출된다.Then, the anti-slip stent 100 of the present invention is reduced in volume as its overall length increases, and is easily discharged out of the human body from the lumen 2 in the body through a stent treatment device such as a catheter.

이상에서는 본 발명을 특정의 바람직한 실시예를 예를 들어 도시하고 설명하였으나, 본 발명은 상기한 실시예에 한정되지 아니하며 본 발명의 정신을 벗어나지 않는 범위 내에서 당해 발명이 속하는 기술분야에서 통상의 지식을 가진자에 의해 다양한 변경과 수정이 가능할 것이다.In the above, although the present invention has been illustrated and described with reference to specific preferred embodiments, the present invention is not limited to the above-described embodiments, and it is not limited to the above-described embodiments, but is within the scope of the present invention, and general knowledge in the art to which this invention belongs Various changes and modifications will be possible by those who have.

10 : 원통형 몸체 11 : 제1공간부
12 : 절곡부 20 : 제1확관부
21 : 제2공간부 30 : 제2확관부
31 : 제3공간부 40 : 연장부
41 : 제4공간부 50 : 제1피막층
51 : 제2피막층 60 : 당김줄
100 : 미끄럼 방지용 스텐트10: cylindrical body 11: first space portion
12: bent portion 20: first expansion portion
21: second space part 30: second expansion part
31: third space part 40: extension
41: fourth space 50: first coating layer
51: second coating layer 60: pulling line
100: anti-skid stent

Claims (8)

체내의 내강에 발생된 협착 또는 폐색되는 병변부위를 확장시켜주는 스텐트에 있어서,
초탄성 형상기억합금으로 이루어진 와이어(1)를 중공식 원통형의 형상으로 그물망 형태로 엮거나 교차시켜서 다수의 제1공간부(11)를 형성하며, 양쪽 끝에는 원주를 따라 다수의 절곡부(12)를 형성한 원통형 몸체(10)를 포함하되,
상기 원통형 몸체(10)에는 상기 원통형 몸체(10)보다 지름이 크고, 제1공간부(11)보다 크기가 큰 제2공간부(21)를 다수로 가진 제1확관부(20)를 형성하고,
상기 제1확관부(20)에는 상기 제1확관부(20)와 지름이 같고 제1공간부(11)와 크기가 유사한 제3공간부(31)를 다수로 가진 제2확관부(30)를, 원통형 몸체(10)에 인접한 상기 제1확관부(20)의 양쪽 끝에 형성하면서 열처리하며,
상기 원통형 몸체(10)의 한쪽 길이를 연장하여 연장부(40)를 형성하고 상기 연장부(40)에는 상기 제2공간부(21)와 크기가 유사한 제4공간부(41)를 다수로 형성하며,
상기 제1확관부(20)는 상기 원통형 몸체(10)의 길이 방향으로 따라 미리 정해진 간격으로 다수 형성되고, 상기 제2확관부(30) 사이에 제1확관부의 길이방향을 따라 미리 정해진 간격으로 적어도 하나 이상의 제2확관부를 형성하여,
상기 제2확관부(30)는 제1확관부(20)보다 탄성이 강해 이동하는 체액의 압력 또는 인체의 흔들림 및 외부에서 발생되는 외력에 의해 제1확관부(20)가 더 유연하게 변형되는 것을 특징으로 하는 미끄럼 방지용 스텐트.In the stent to expand the stenosis or occluded lesions generated in the lumen of the body,
A plurality of first space portions 11 are formed by interweaving or crossing the wire 1 made of a super-elastic shape memory alloy in a hollow cylindrical shape in a mesh form, and a plurality of bent portions 12 at both ends along the circumference. It includes a cylindrical body 10 formed,
In the cylindrical body 10, a first expansion tube 20 having a plurality of second space portions 21 having a larger diameter than the cylindrical body 10 and having a larger size than the first space portion 11 is formed. ,
The first expansion pipe 20 has a second expansion pipe 30 having a plurality of third space portions 31 having the same diameter as the first expansion pipe 20 and having a similar size to the first space portion 11. The heat treatment while forming both ends of the first expansion tube 20 adjacent to the cylindrical body 10,
An extension 40 is formed by extending one length of the cylindrical body 10, and a plurality of fourth spaces 41, which are similar in size to the second spaces 21, are formed in the extensions 40. And
The first expansion pipe 20 is formed in a plurality of predetermined intervals along the longitudinal direction of the cylindrical body 10, a predetermined interval along the longitudinal direction of the first expansion pipe between the second expansion pipe 30 By forming at least one second expansion tube,
The second expansion pipe 30 is more elastic than the first expansion pipe 20, so that the first expansion pipe 20 is more flexibly deformed by the pressure of body fluid that moves or the external vibration generated by the body and external force generated from the outside. Anti-skid stent, characterized in that. 삭제delete 삭제delete 삭제delete 제1항에 있어서,
상기 원통형 몸체(10) 및 제1확관부(20) 및 제2확관부(30)에 실리콘 재질의 제1피막층(50)을 형성하여 제1,2,3공간부(11)(21)(31)를 폐쇄하고,
상기 연장부(40)에 PTFE(Polytetrafluoroethylene) 재질의 제2피막층(51)을 형성하여 제4공간부(41)를 폐쇄하는 것을 특징으로 하는 미끄럼 방지용 스텐트.According to claim 1,
First, second, and third space portions 11 and 21 by forming a first coating layer 50 made of silicon on the cylindrical body 10 and the first expansion pipe portion 20 and the second expansion pipe portion 30 31) closed,
A non-slip stent, characterized in that the fourth space portion (41) is closed by forming a second coating layer (51) made of polytetrafluoroethylene (PTFE) material on the extension portion (40). 제5항에 있어서,
상기 제1피막층(50)과 원통형 몸체(10)의 한쪽 끝에 형성된 다수의 절곡부(12)를 당김줄(60)로 꿰매어서, 상기 당김줄(60)을 원통형 몸체(10)에서 돌출시키는 것을 특징으로 하는 미끄럼 방지용 스텐트.
The method of claim 5,
The plurality of bent portions 12 formed at one end of the first coating layer 50 and the cylindrical body 10 are sewn with a pulling line 60 to protrude the pulling line 60 from the cylindrical body 10. Features a non-slip stent.
제1항에 있어서,
상기 제1,2확관부(20)(30)는 전체적으로 사각형 또는 타원형과 유사한 형태로 형성하는 것을 특징으로 하는 미끄럼 방지용 스텐트.According to claim 1,
The first and second expansion pipes 20 and 30 are anti-slip stents, characterized in that they are formed in a shape similar to a rectangle or an oval as a whole. 제1항에 있어서,
상기 원통형 몸체(10) 및 제1확관부(20) 및 제2확관부(30)에 PU(Polyurethane) 또는 PTFE(Polytetrafluoroethylene) 재질의 제1피막층(50)을 형성하여 제1,2,3공간부(11)(21)(31)를 폐쇄하고,
상기 연장부(40)에 PTFE(Polytetrafluoroethylene) 재질의 제2피막층(51)을 형성하여 제4공간부(41)를 폐쇄하는 것을 특징으로 하는 미끄럼 방지용 스텐트.According to claim 1,
First, second, and third spaces by forming a first coating layer 50 made of polyurethane (PU) or polytetrafluoroethylene (PTFE) on the cylindrical body 10 and the first expansion tube 20 and the second expansion tube 30 The parts (11) (21) (31) are closed,
A non-slip stent, characterized in that the fourth space portion (41) is closed by forming a second coating layer (51) made of polytetrafluoroethylene (PTFE) material on the extension portion (40).
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