KR101650516B1 - Esophageal Stent - Google Patents

Esophageal Stent Download PDF

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Publication number
KR101650516B1
KR101650516B1 KR1020140155205A KR20140155205A KR101650516B1 KR 101650516 B1 KR101650516 B1 KR 101650516B1 KR 1020140155205 A KR1020140155205 A KR 1020140155205A KR 20140155205 A KR20140155205 A KR 20140155205A KR 101650516 B1 KR101650516 B1 KR 101650516B1
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South Korea
Prior art keywords
diameter
stent
lumen
expanding
body part
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KR1020140155205A
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Korean (ko)
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KR20160055433A (en
Inventor
심찬섭
김은진
박헌국
장봉석
호 윤
김선종
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주식회사 엠아이텍
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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
    • 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
    • A61F2/82—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
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure 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
    • A61F2002/044—Oesophagi or esophagi or gullets
    • 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
    • A61F2002/828—Means for connecting a plurality of stents allowing flexibility of the whole 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
    • 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

Abstract

본 발명은 식도용 스텐트에 관한 것으로, 중공의 원통형상을 갖는 몸체부; 상기 몸체부의 일단에 상기 몸체부의 직경보다 확장된 직경으로 형성되는 제1 확관부; 및 상기 몸체부의 타단에 상기 몸체부의 직경보다 확장된 직경으로 형성되는 제2 확관부;를 포함하며. 상기 제2 확관부는 몸체부의 직경보다 확장된 직경으로부터 말단을 항해 갈수록 직경이 줄어들며 구부러지는 만곡된 형태로 마련되는 것을 특징으로 한다.
이를 통해 식도용 스텐트의 제2 확관나는 몸체부의 직경보다 확장된 직경으로부터 말단을 항해 갈수록 직경이 줄어드는 형태로 마련되어, 체내 내강의 협착부위에 설치되어 좁아진 내강을 확장시키고 넓어진 통로를 유지하기 위해 견고하게 형태를 유지하는 과정에서 상기 식도용 스텐트에 의해 발생할 수 있는 자극을 줄일 수 있다. The present invention relates to a stent for corrugation, comprising: a body portion having a hollow cylindrical shape; A first expanding part formed at one end of the body part with a diameter larger than a diameter of the body part; And a second expanding part formed at the other end of the body part with a diameter larger than the diameter of the body part. And the second bendable portion is formed in a curved shape in which the diameter decreases from the diameter of the body extending from the diameter of the body to the end of the body.
In this way, the second expansion of the stent for induction is provided in a form in which the diameter decreases from the diameter of the body to the diameter of the end as it goes from the end to the end, and is provided at the stenosis region of the body lumen to expand the narrowed lumen, The stimulation that may be caused by the coronary stent can be reduced in the course of maintaining the shape.

Description

식도용 스텐트 {Esophageal Stent}[0001] Esophageal Stent [

본 발명은 식도용 스텐트에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an induction stent.

종래, 체내 내강의 협착 부위에 삽입되어 협착 진행을 방지하기 위해 이용되는 스텐트의 경우, 협착 부위까지 발룬 카데터(Balloon catheter)에 의해 이동한 뒤 확장용 풍선이 부풀어짐에 따라 스텐트 또한 확장되어 협착 부위에 접촉된 표면적을 넓혀감으로써, 협착 부위의 통로를 넓혀 물질의 이동을 원활하게 하며 이러한 장치에 대한 선행문헌에는 대한민국 등록특허공보 제10-0448329호의 "내강 확장용 스텐트"이 있다.In the case of a stent used to prevent the progression of stenosis inserted into the stenotic region of the lumen of the body, the balloon catheter is moved to the stenosis site, and as the expanding balloon is inflated, By expanding the surface area contacted with the region, the passage of the stenotic region is widened to facilitate the movement of the substance. A prior art document for such a device is Korean Patent Registration No. 10-0448329 entitled " Lumen dilatation stent ".

이러한 내강 확장용 스텐트의 경우, 내강의 협착으로 인한 체내 혈액 및 체액의 흐름 저해를 해소하기 위해 협착 부위에 견고하게 설치되어 확장된 형태를 유지하며, 이러한 설치 형태는 체내 협착 부위에 밀착되어 위치한다.In the case of the lumen dilatation stent, the stent is firmly installed at the stenosis site to maintain the expanded shape to relieve the flow of blood and body fluids due to the stenosis of the lumen, and the stent is placed in close contact with the stenosis site .

하지만 종래의 내강 확장용 스텐트는 초탄성 형상기억합금으로 마련되어 체내 협착 부위에서 확장되어 원래의 형태를 형성할 때, 협착 부위와 견고하게 밀착되어 접촉면을 넓힘으로써 협착 부위 내 접촉영역이 증가함과 동시에 협착 부위 내 스텐트에 의한 자극영역 또한 증가되었다. However, the conventional stent for lumen dilatation is provided with a super-elastic shape memory alloy so that when the original shape is formed by expanding at the internal stenotic region, the stent is tightly adhered to the stenotic region to widen the contact surface, Stimulation area by stent in stenosis was also increased.

따라서, 종래 체내 내강의 협착 부위에 삽입되는 스텐트의 경우, 협착 부위 내 스텐트에 의한 자극이 영향을 미치는 영역이 증가하고 스텐트 설치 후 시간이 흐름에 따라 협착 부위에 미치는 자극이 강해짐으로써, 의료적 부작용이 발생하는 문제점이 있었다.
Therefore, in the case of the stent inserted into the stenotic region of the lumen of the body in the past, the area of influence of the stent by the stent in the stenotic region increases and the stimulus applied to the stenotic region increases with time after the stent is installed, .

본 발명은 상기 문제점을 해결하기 위해 창작된 것으로써, 본 발명의 목적은 협착 진행에 따라 좁아진 체내 내강에 설치되어 협착 부위를 확장시켜 통로를 넓히는 과정에서 스텐트에 의해 발생하는 체내 자극성을 줄일 수 있는 기술을 제공하는데 있다.
The present invention has been made to solve the above problems, and it is an object of the present invention to provide a gastric banding device capable of reducing irritation in the body caused by a stent in a process of expanding a stenosis site by being installed in a body lumen, Technology.

상기 목적을 달성하기 위하여 본 발명의 식도용 스텐트는, 중공의 원통형상을 갖는 몸체부; 상기 몸체부의 일단에 상기 몸체부의 직경보다 확장된 직경으로 형성되는 제1 확관부; 및 상기 몸체부의 타단에 상기 몸체부의 직경보다 확장된 직경으로 형성되는 제2 확관부;를 포함하며. 상기 제2 확관부는 몸체부의 직경보다 확장된 직경으로부터 말단을 항해 갈수록 직경이 줄어드는 형태로 마련되는 것을 특징으로 한다.According to an aspect of the present invention, there is provided a stent for use in an induction stent comprising: a body portion having a hollow cylindrical shape; A first expanding part formed at one end of the body part with a diameter larger than a diameter of the body part; And a second expanding part formed at the other end of the body part with a diameter larger than the diameter of the body part. And the second bulging portion is provided in a shape in which the diameter decreases from the diameter enlarged beyond the diameter of the body portion toward the end thereof.

여기서, 상기 제2 확관부는 구부러지는 만곡된 형태로 마련된다.Here, the second expanding portion is formed in a curved shape.

본 발명에 의해, 식도용 스텐트는 몸체부의 직경보다 확장된 직경으로부터 말단을 항해 갈수록 직경이 줄어드는 형태의 확관부를 통해 협착부위에 설치 시 접촉 표면적을 줄임으로써 식도용 스텐트에 의한 자극을 줄여줄 수 있다.
According to the present invention, a stent for an irrigation can reduce the irritation caused by a stent for a stomach by reducing the contact surface area at the stenosis site through a dilatation portion in which the diameter decreases from the diameter enlarged beyond the diameter of the body portion to the end, have.

도1은 본 발명에 따른 식도용 스텐트를 도시하는 사시도이다.
도2는 본 발명에 따른 식도용 스텐트를 도시하는 정면도이다.
도3은 종래 식도용 스텐트의 설치상태를 보여주는 단면도이다.
도4는 본 발명에 따른 식도용 스텐트의 설치상태를 보여주는 단면도이다.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a stent for an irrigation according to the present invention; Fig.
2 is a front view showing a stent for an irrigation according to the present invention.
3 is a cross-sectional view showing a state of a conventional stent for an irrigation.
4 is a cross-sectional view showing an installation state of a stent for an irrigation according to the present invention.

본 발명의 바람직한 실시예에 대하여 첨부된 도면을 참조하여 더 구체적으로 설명하되, 이미 주지된 기술적 부분에 대해서는 설명의 간경함을 위해 생략하거나 압축하기로 한다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described more specifically with reference to the accompanying drawings, in which the technical parts already known will be omitted or compressed for the sake of explanation.

1. 식도용 스텐트의 구성요소에 관한 설명1. Description of the components of the stent for rehabilitation

도1 및 도2를 참조하여 설명하면, 본 발명의 식도용 스텐트(100)는 몸체부(110); 제1 확관부(121); 및 제2 확관부(122);를 포함한다.Referring to FIGS. 1 and 2, the stent 100 for use in the present invention includes a body 110; A first expanded portion 121; And a second expanding portion 122.

몸체부(110)는 중공의 원통형을 가진다.The body portion 110 has a hollow cylindrical shape.

여기서, 몸체부(110)는 식도 내 이식되어 협착 부위를 확장시키는 기본 골격을 가진다.Here, the body 110 has a basic skeleton that is implanted in the esophagus to expand the stenotic region.

제1 확관부(121)는 몸체부(110)의 일단에 몸체부(110)의 직경보다 큰 직경으로 마련되며 및 제2 확관부(122)는 몸체부(110)의 타단에 몸체부(110)의 직경보다 큰 직경으로 마련된다.The first bulging portion 121 is provided at one end of the body 110 with a diameter larger than the diameter of the body 110 and the second bulging portion 122 is provided at the other end of the body 110, As shown in Fig.

여기서, 제2 확관부(122)는 말단을 향해 일정 범위까지는 확장된 뒤, 다시 직경이 줄어들어가는 형식으로. 몸체부의 직경보다 확장된 직경으로부터 말단을 항해 갈수록 직경이 줄어드는 형태로 마련된다.Here, the second expanded portion 122 is expanded to a certain extent toward the distal end, and then the diameter is reduced again. The diameter of the body decreases from the diameter of the body extending from the diameter of the body to the end thereof.

또한, 도2에 도시된 바와 같이 제2 확관부(122)는 만곡된 형태로 마련되어. 제1 확관부(121)가 식도 내 협착 부위에 접촉되어 형성하는 접촉면적에 비해 적은 접촉면적을 형성한다.Also, as shown in FIG. 2, the second expanded portion 122 is provided in a curved shape. The first expanding portion 121 is in contact with the narrowed portion of the esophagus to form a small contact area compared to the contact area formed.

이에 따라, 상기 몸체부(110)의 일단에 형성되는 제1 확관부(121)는 몸체부(110)의 직경에 비해 일정하게 확장된 직경으로 마련되어 협착 부위에 이식된 식도용 스텐트(100)의 이동을 방지하고, 제2 확관부(122)는 몸체부(110)의 직경에 비해 확장된 직경으로 몸체부(110) 타단에 마련되어 일정범위까지 직경을 확장한 뒤 다시 직경을 줄이는 형식으로 말단을 향해 구부러지는 만곡된 형태를 형성하여 식도 벽에 가해지는 자극을 줄여준다. The first expanding portion 121 formed at one end of the body 110 has a diameter that is constantly enlarged relative to the diameter of the body 110 and is inserted into the narrowed portion of the stent 100, And the second expanded portion 122 is provided at the other end of the body portion 110 with an expanded diameter as compared with the diameter of the body portion 110 so as to extend the diameter to a predetermined range and then reduce the diameter To form a curved shape that curves toward the esophagus wall to reduce the stimulus.

한편, 각 부(110, 121, 122)는 금속와이어가 교차되어 메쉬 형태로 형성될 수 있다.Each of the parts 110, 121, and 122 may be formed in a mesh shape by crossing metal wires.

또한, 식도용 스텐트(100)는 상기 각 부(110, 121, 122)의 내부면 혹은 외부면을 감싸며, 중공의 원통형상을 가지는 피막을 포함할 수 있다.In addition, the stent for gastrointestinal 100 may include a coating having a hollow cylindrical shape surrounding the inner or outer surfaces of the respective portions 110, 121, and 122.

여기서, 피막은 PTFE(Polytetrafluoroethylene), 실리콘, 폴리우레탄, 폴리에스테르, 폴리프로필렌, 폴리에틸렌,폴리올레핀, HDPE(High Density Polyethylene), 및 ePTFE(expanded Polytetrafluoro- ethylene) 중에서 선택될 수 있지만 이에 한정되지는 않는다.Here, the coating can be selected from but not limited to PTFE (Polytetrafluoroethylene), silicone, polyurethane, polyester, polypropylene, polyethylene, polyolefin, HDPE (high density polyethylene), and expanded Polytetrafluoroethylene (ePTFE).

또한, 각 부(110, 121, 122)는 체내 설치된 상기 식도용 스텐트(100)의 가시성 확보를 위해 하나 이상의 방사선 비투과성 표시자(140)를 포함한다.In addition, each of the sections 110, 121, 122 includes one or more radiopacity indicators 140 for the purpose of ensuring the visibility of the cored stent 100 installed in the body.

여기서, 방사선 비투과성 표시자(140)는 X선 등의 방사선을 이용한 검사를 통해 식도용 스텐트(100)의 체내 삽입 시 가시성을 확보시켜 줌으로써 협착 부위에 식도용 스텐트(100)를 정확하게 위치시킬 수 있도록 한다.
Here, the radiopaque indicator 140 may be used to accurately position the stent 100 for stenting at the stenosis site by inspecting the stent 100 for the purpose of inserting the stent 100 into the body through examination using radiation such as X-rays .

2. 식도용 스텐트의 설치에 따른 작용에 관한 설명2. Explanation of the effect of installation of the stent for induction

도3 및 도4를 참조하여 설명하면, 본 발명의 식도용 스텐트(100)는 종래의 식도용 스텐트(200)와 비교하여 협착부위(30)에 설치되어 체내 내강(20) 벽에 밀착되었을 때, 형성되는 접촉면적에서 차이를 보인다.3 and 4, the stent 100 for the present invention is installed on the stenosis site 30 and is in close contact with the wall of the lumen 20 in comparison with the conventional stent for the stent 200 , And there is a difference in the contact area formed.

도3에 도시된 바와 같이, 종래의 식도용 스텐트(200)는 몸체부 양단에 확장된 직경을 가지고 형성된 확관부를 포함하며, 종래의 식도용 스텐트(200)의 확관부는 일정한 직경으로 마련되어, 확관부의 외주면 전체가 체내 내강(20) 벽에 밀착되어 설치된다. As shown in FIG. 3, the conventional gastric stent 200 includes an enlarged diameter portion formed at both ends of the body portion. The conventional expandable stent 200 is provided with a predetermined diameter, The entire outer circumferential surface of the expanded portion is closely attached to the wall of the body lumen 20.

이에 비해 도4에 도시된 바와 같이. 본 발명의 식도용 스텐트(100)는 몸체부(110)의 양단에 몸체부(110)의 직경에 비해 확장된 크기로 마련되는 제2 확관부(122)가 몸체부(110)의 직경보다 확장된 직경으로부터 말단을 항해 갈수록 직경이 줄어드는 형태로 마련되어 제1 확관부(121) 또는 제2 확관부(122) 중 적어도 하나가 체내 내강(20) 벽에 밀착되어 형성하는 접촉면적은 종래의 식도용 스텐트(200)의 확관부가 채내 내강(20) 벽에 밀착되어 형성하는 접촉면적에 비해 현저히 감소한다.On the other hand, as shown in FIG. The stent for anastomosing 100 according to the present invention is characterized in that the second expanding part 122 provided at both ends of the body part 110 in an enlarged size as compared with the diameter of the body part 110 is larger than the diameter of the body part 110 The contact area formed by contacting at least one of the first and second expanded portions 121 and 122 with the wall of the lumen 20 in the body is smaller than the contact area formed by the conventional method The expanding portion of the stent 200 is significantly reduced compared to the contact area formed by adhering to the wall of the lumen 20.

즉, 본 발명의 식도용 스텐트(100)는 협착부위(30)에 설치되어 체내 내강(20) 벽에 밀착되어 유지되는 과정에서, 식도용 스텐트(100)의 내부로 이동하는 다양한 유체 및 물질에 의한 미세한 이동 등의 물리적 자극에 의한 식도벽의 손상을 줄일 수 있다.That is, in the stent 100 for stent implantation according to the present invention, stent 100 is installed on the stenosis site 30 and is held in close contact with the wall of the lumen 20, It is possible to reduce damage to the esophagus wall due to physical stimulation such as fine movement caused by the esophagus.

본 발명에 개시된 실시예는 본 발명의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 실시예에 의해서 본 발명의 기술 사상의 범위가 한정되는 것은 아니다. 보호범위는 아래 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리 범위에 포함되는 것으로 해석되어야 할 것이다.
The embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection is to be construed in accordance with the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

100 : 식도용 스텐트
110 : 몸체부
121 : 제1 확관부
122 : 제2 확관부
140 : 방사선 비투과성 표시자100: Corrosive stent
110:
121: first expansion part
122: a second expansion part
140: radiopacity indicator

Claims (2)

식도 내강에 설치되어 협착부위를 직경을 확장시키는 식도용 스텐트에 있어서,
중공의 원통형상을 갖는 몸체부;
상기 몸체부의 일단에 상기 몸체부의 직경보다 확장된 직경으로 형성되며, 상기 식도용 스텐트 설치 시 외주면 전체가 식도 내강 벽면에 밀착되는 형태로 위장 측을 향하는 제1 확관부; 및
상기 몸체부의 타단에 상기 몸체부의 직경보다 확장된 직경으로 형성되며, 상기 식도용 스텐트 설치 시 외주면 일부만이 식도 내강 벽면에 밀착되어 상기 제1확관부에 비해 적은 접촉면적을 형성하는 형태로 인두(Pharynx) 측을 향하는 제2 확관부;를 포함하며.
상기 제2 확관부는 상기 몸체부의 직경보다 확장된 직경으로부터 말단을 항해 갈수록 직경이 줄어들며 구부러지는 만곡된 형태로 마련되며, 상기 제2확관부의 상기 몸체부의 직경보다 확장된 직경으로부터 말단을 항해 갈수록 직경이 줄어들며 구부러지는 부분은 외주면이 식도 내강 벽면과 접촉하지 않는 것을 특징으로 하는
식도용 스텐트.An esophageal stent which is installed in the lumen of the esophagus to expand the diameter of the stenotic region,
A body portion having a hollow cylindrical shape;
A first expanding part formed at one end of the body part with a diameter larger than the diameter of the body part and facing the gastrointestinal side such that the entire outer circumferential surface of the stent is in close contact with the lumen of the esophagus when the stent for refraction is installed; And
The stent of claim 1, wherein the stent has a diameter that is greater than a diameter of the body at the other end of the body, and the stent is made of Pharynx And a second expanding portion facing the first expansion portion.
Wherein the second bendable portion is provided in a curved shape in which the diameter is reduced and curved as it goes from the distal end to the distal end of the second bendable portion, and the distal end of the second bendable portion extends from a diameter larger than the diameter of the body portion, Characterized in that the portion whose diameter is reduced and which is bent does not contact the outer circumferential surface with the esophageal lumen wall surface
Stainless steel stent. 삭제delete
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008519668A (en) * 2004-11-10 2008-06-12 ボストン サイエンティフィック リミテッド Trauma avoidance stent with reduced deployment force, manufacturing method thereof, stent deployment installation method and apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008519668A (en) * 2004-11-10 2008-06-12 ボストン サイエンティフィック リミテッド Trauma avoidance stent with reduced deployment force, manufacturing method thereof, stent deployment installation method and apparatus

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