KR100337650B1 - A expandable stents for prevention of migration - Google Patents
A expandable stents for prevention of migration Download PDFInfo
- Publication number
- KR100337650B1 KR100337650B1 KR1019990035038A KR19990035038A KR100337650B1 KR 100337650 B1 KR100337650 B1 KR 100337650B1 KR 1019990035038 A KR1019990035038 A KR 1019990035038A KR 19990035038 A KR19990035038 A KR 19990035038A KR 100337650 B1 KR100337650 B1 KR 100337650B1
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- South Korea
- Prior art keywords
- lumen
- zigzag
- spiral
- preventing
- stent
- Prior art date
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- 230000005012 migration Effects 0.000 title 1
- 238000013508 migration Methods 0.000 title 1
- 230000002265 prevention Effects 0.000 title 1
- 238000003780 insertion Methods 0.000 claims abstract description 18
- 230000037431 insertion Effects 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 abstract description 2
- 230000000295 complement effect Effects 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
Classifications
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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
- A61F2/92—Stents in the form of a rolled-up sheet expanding after insertion into the vessel, e.g. with a spiral shape in cross-section
-
- 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
- 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
- A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
- A61F2/885—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils comprising a coil including a plurality of spiral or helical sections with alternate directions around a central axis
-
- 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
Abstract
내강의 협착된 부위에 삽입된 상태로 보다 견고하게 고정될 수 있도록 하여 내강의 삽입된 부위로부터 쉽게 이동하지 않는 안정성을 향상할 수 있도록 한 이동 방지를 위한 팽창성 스텐트에 관한 것으로,The present invention relates to an expandable stent for preventing movement, which can be more firmly fixed while being inserted into a constricted portion of the lumen, thereby improving stability that does not easily move from the inserted portion of the lumen.
일정한 직경을 갖고서 대체적으로 원통형상을 이루게 필라멘트가 나선형으로 감겨지는 나선부와;A spiral portion in which a filament is spirally wound so as to have a generally cylindrical shape with a constant diameter;
상기한 나선부의 적어도 어느 일단부에 일정하게 직경이 확대되면서 원통형상을 이루도록 필라멘트가 지그재그형으로 감겨지고, 나선부를 내강의 삽입부위로부터 이동을 방지하기 위한 지그재그부와;A zig-zag portion for winding the filament in a zigzag shape so as to form a cylindrical shape with a constant diameter extending at least at one end of the spiral portion, and preventing the spiral portion from moving from an insertion portion of the lumen;
상기한 어느 지그재그부의 일단면으로부터 돌출되고, 지그재그부가 내강에 삽입된 상태에서 팽창할 때 상기 내강에 고정되어 지그재그부의 이동을 방지하기 위한 이동방지부를 포함한다.It protrudes from one end surface of any one of the zigzag portion, and is fixed to the lumen when the zigzag portion is inserted into the lumen, and includes a movement preventing portion for preventing the movement of the zigzag portion.
Description
본 발명은 이동 방지를 위한 팽창성 스텐트에 관한 것으로, 좀더 상세하게는 내강의 협착된 부위에 삽입된 상태로 보다 견고하게 고정될 수 있도록 하여 내강의 삽입된 부위로부터 쉽게 이동하지 않는 안정성을 향상할 수 있도록 한 이동 방지를 위한 팽창성 스텐트에 관한 것이다.The present invention relates to an expandable stent for preventing movement, and more particularly, to be more firmly fixed while being inserted into a constricted portion of the lumen, thereby improving stability that is not easily moved from the inserted portion of the lumen. To an inflatable stent for preventing movement.
예컨대, 협착된 내강을 확장시키거나 확장된 내장이 다시 좁아지지 않도록 하기 위하여 내강의 협착 부위에 스텐트가 삽입되는 경우가 있다.For example, there may be a case where a stent is inserted into the narrowing portion of the lumen to expand the narrowed lumen or to prevent the enlarged viscera from narrowing again.
이러한 스텐트는 대략 원통형상을 이루고 있으며, 스텐트로서의 기능을 제대로 발휘하기 위하여 여러 가지 특성을 가져야 하는데, 그중에서 대표적인 것으로 협착된 내강을 확장하여 통로를 유지시켜주면서 내강의 삽입 부위로부터 이동하지않는 안정성이 있어야 한다.These stents have a substantially cylindrical shape, and have various characteristics in order to properly function as a stent. Among them, the stent has a stability that does not move from the insertion site of the lumen while maintaining the passage by expanding the narrowed lumen. Should be
따라서 상기한 기능을 갖는 스텐트가 다수 개발되어 왔는데, 대표적인 것으로 자체가 탄성력을 가지고 있어 외력을 가하여 수축시킬 수 있고 이 외력을 제거하면 자체 팽창하는 자체 팽창형 스텐트가 있으며, 상기한 자체 팽창형 스텐트는 크게 나선형 스텐트와 지그재그형 스텐트로 구분할 수 있다.Therefore, a number of stents having the above-described functions have been developed, and the representative ones have elastic force so that they can be contracted by applying an external force, and when the external force is removed, there is a self-expanding stent that self-expands. It can be divided into spiral stent and zigzag stent.
상기한 나선형 스텐트중 대표적인 것으로는, 단위 길이를 갖는 필라멘트를 원통형 벽면을 따라 나선상으로 감아주고 다시 지그재그 형태로 양끝단을 왕복함과 아울러 서로 교차하여 메쉬를 만들어 전체적으로 원통형상을 갖게 된다.Representative of the spiral stents, the filament having a unit length spirally wound along the cylindrical wall surface and reciprocating both ends in a zigzag form again and intersecting with each other to form a mesh to have an overall cylindrical shape.
이러한 나선형 스텐트는 작은 직경으로 축소될 수 있어 유연성이 우수한 반면 이 유연성으로 인하여 내강의 이식부위에서 쉽게 이동하게 되는 단점이 있다.Such a spiral stent can be reduced to a small diameter so that the flexibility is excellent, but this flexibility makes it easy to move in the lumen of the lumen.
그리고 상기한 지그재그형 스텐트중 대표적인 것으로는, 필라멘트를 다수의 직선부와 다수의 밴딩 포인트에 의하여 이 직선부를 연결하는 피크부 및 밸리부를 이루도록 지그재그로 다수의 턴을 행하며, 상기한 어느 일턴의 밸리부는 이 일턴과 이웃하는 턴의 대응하는 피크부를 서로 꼬아서 연결하여 이루어진다.And typical of the zigzag stents, a plurality of turns in a zigzag to form a peak portion and a valley portion connecting the filament by a plurality of straight portions and a plurality of bending points, the valley portion of any one turn described above This is done by twisting the corresponding peaks of one turn and neighboring turns together.
이러한 지그재그형 스텐트는 좁아진 내강을 확장시키는 확장력이 우수할 뿐만 아니라 내강의 이식부위로부터 쉽게 이동하지 않는 안정성을 갖게 되는 반면 유연성이 떨어지게 되는 단점이 있다.Such a zig-zag stent has not only excellent expansion force to expand the narrowed lumen but also has stability that does not easily move from the implanted portion of the lumen, but has a disadvantage of inferior flexibility.
상기한 나선형과 지그재그형 스텐트의 장단점을 서로 보완하기 위하여 나선형 스텐트의 양단부에 직경이 일정하게 확대되면서 내강의 삽입부위에서 이동을 방지하기 위한 지그재그형 스텐트가 일체로 연결될 수 있다.In order to complement the advantages and disadvantages of the spiral and zigzag stents, the zigzag stent for preventing movement at the insertion portion of the lumen may be integrally connected while the diameters of both ends of the spiral stent are constantly enlarged.
이러한 스텐트들의 내,외측면에는 삽입장치를 이용하여 내강에 삽입할 때 삽입장치와의 마찰을 감소할 수 있도록 피복부재로 피복하고 있다.The inner and outer surfaces of the stents are coated with a coating member to reduce friction with the insertion apparatus when the stent is inserted into the lumen using the insertion apparatus.
그러나 상기한 피복부재에 의하여 스텐트의 수축시 직경을 줄일 수는 있으나, 내강의 삽입된 부위에서 쉽게 이동하게 되는 문제점이 여전히 내재되어 있다.However, although the diameter of the stent can be reduced when the stent is contracted by the coating member, there is still a problem of easily moving in the inserted portion of the lumen.
따라서 본 발명은 상기한 문제점을 해결하기 위하여 발명된 것으로서, 본 발명의 목적은 내강의 협착된 부위에 삽입된 상태로 보다 견고하게 고정될 수 있도록 하여 내강의 삽입된 부위로부터 쉽게 이동하지 않는 안정성을 향상할 수 있도록 한 이동 방지를 위한 팽창성 스텐트를 제공하는데 있다.Therefore, the present invention has been invented to solve the above problems, the object of the present invention is to be more firmly fixed in the inserted state in the stenosis of the lumen so that the stability does not move easily from the inserted portion of the lumen It is to provide an expandable stent for preventing movement to improve.
상기의 목적을 달성하기 위하여 본 발명은, 일정한 직경을 갖고서 대체적으로 원통형상을 이루게 필라멘트가 나선형으로 감겨지는 나선부와;In order to achieve the above object, the present invention, the spiral portion having a constant diameter, the filament is wound spirally to form a generally cylindrical shape;
상기한 나선형 부재의 적어도 어느 일단부에 일정하게 직경이 확대되면서 원통형상을 이루도록 필라멘트가 지그재그형으로 감겨지고, 나선부를 내강의 삽입부위로부터 이동을 방지하기 위한 지그재그부와;A zig-zag portion for winding the filament in a zigzag shape so as to form a cylindrical shape with a constant diameter enlarged to at least one end of the spiral member, and preventing the spiral portion from moving from the insertion portion of the lumen;
상기한 어느 지그재그부의 일단면으로부터 돌출되고, 지그재그부가 내강에 삽입된 상태에서 팽창할 때 상기 내강에 고정되어 지그재그부의 이동을 방지하기 위한 이동방지부를 포함한다.It protrudes from one end surface of any one of the zigzag portion, and is fixed to the lumen when the zigzag portion is inserted into the lumen, and includes a movement preventing portion for preventing the movement of the zigzag portion.
도 1은 본 발명에 따른 이동 방지를 위한 팽창성 스텐트를 도시한 사시도.1 is a perspective view showing an inflatable stent for preventing movement according to the present invention.
도 2는 본 발명에 따른 이동 방지를 위한 팽창성 스텐트가 내강에 삽입되는 상태를 도시한 개략적인 도면이다.Figure 2 is a schematic diagram showing a state in which an inflatable stent for preventing movement in accordance with the present invention is inserted into the lumen.
이하, 첨부 도면을 참조하여 본 발명의 바람직한 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1 및 도 2를 참조하면, 본 발명에 따른 이동 방지를 위한 팽창성 스텐트(1)는 일정한 직경을 갖고서 대체적으로 원통형상을 이루게 필라멘트가 나선형으로 감겨지는 나선부(3)와;1 and 2, the expandable stent 1 for preventing movement according to the present invention includes a spiral portion 3 in which a filament is spirally wound to have a predetermined diameter and form a generally cylindrical shape;
상기한 나선부(3)의 적어도 어느 일단부에 일정하게 직경이 확대되면서 원통형상을 이루도록 필라멘트가 지그재그형으로 감겨지고, 나선부(3)를 내강의 삽입부위로부터 이동을 방지하기 위한 지그재그부(5)와;The filament is wound in a zigzag shape so as to form a cylindrical shape while the diameter is uniformly expanded to at least one end of the spiral portion 3, and a zigzag portion for preventing the spiral portion 3 from moving from the insertion portion of the lumen ( 5) and;
상기한 어느 지그재그부(5)의 일단면으로부터 돌출되고, 지그재그부(5)가 내강에 삽입된 상태에서 팽창할 때 상기 내강에 고정되어 지그재그부(5)의 이동을 방지하기 위한 이동방지부(7)를 포함한다.Protruding from one end surface of any one of the zigzag portion 5, the movement preventing portion for preventing movement of the zigzag portion 5 is fixed to the inner lumen when the zigzag portion 5 is expanded in the inserted state into the lumen ( 7).
상기한 나선부(3) 또는 지그재그부(5)의 내,외측면 표면에는 이 나선부 또는 지그재그부가 내강의 삽입부위로 삽입될 때 다른 부위와의 마찰을 최소화하기 위한 제1,제2피복부(9)(11)가 각각 피복된다.The inner and outer surfaces of the spiral portion 3 or the zigzag portion 5 have first and second coating portions for minimizing friction with other portions when the spiral portion or the zigzag portion is inserted into the insertion portion of the lumen. (9) and (11) are respectively covered.
상기한 이동방지부(7)는 내강의 삽입부위에 견고하게 고정될 수 있도록 지그재그부(5)의 외주면상에서 나선부(3)쪽 또는 외측으로 일정한 간격으로 뾰족하게 돌출 형성할 수 있다.The movement preventing portion 7 may protrude sharply at regular intervals toward the spiral portion 3 or the outside on the outer circumferential surface of the zigzag portion 5 so as to be firmly fixed to the insertion portion of the lumen.
또한, 상기한 이동방지부(7)의 내외측면에는 이 이동방지부(7)가 내강의 피부 속으로 용이하게 뚫고 들어갈 수 있도록 별도로 피복을 하지 않고 형성하는 것이 바람직하다.In addition, the inner and outer sides of the movement preventing portion 7 is preferably formed without a separate coating so that the movement preventing portion 7 can easily penetrate into the skin of the lumen.
상기한 이동방지부(7)는 내강의 삽입부위로 삽입될 때 용이하게 수축 또는 팽창할 수 있도록 나선부(3)의 외측으로 일정한 길이만큼 중복되게 위치함과 아울러 지그재그부(5)와 동일한 직경을 갖도록 형성한다.The movement preventing part 7 overlaps the outer side of the spiral part 3 by a predetermined length so as to be easily contracted or expanded when inserted into the insertion part of the lumen, and the same diameter as the zigzag part 5. Form to have.
상기한 제1,제2피복부(9)(11)는 지그재그부(5)가 내강의 삽입부위에 삽입되어 팽창할 때 피부와의 마찰을 최소화할 수 있도록 폴리우레탄 등으로 형성할 수 있다.The first and second coating parts 9 and 11 may be formed of polyurethane or the like to minimize friction with the skin when the zigzag part 5 is inserted into the insertion part of the lumen and expands.
이에 따라 본 발명에 따른 이동 방지를 위한 팽창성 스텐트(1)는 나선부(3)와 지그재그부(5)에 의하여 나선형 스텐트와 지그재그형 스텐트의 장단점을 서로 보완할 수 있게 되는 것이다.Accordingly, the expandable stent 1 for preventing movement according to the present invention is able to complement the advantages and disadvantages of the spiral stent and the zigzag stent by the spiral portion 3 and the zigzag portion 5.
즉, 스텐트(1)가 작은 직경으로 축소될 수 있어 유연성이 우수하게 됨과 아울러 좁아진 내강을 확장시키는 확장력이 우수할 뿐만 아니라 내강(100)의 삽입부위(110)로부터 쉽게 이동하지 않는 안정성을 갖게 되는 것입니다.That is, the stent (1) can be reduced to a small diameter is excellent in flexibility and excellent expansion force to expand the narrowed lumen as well as having a stability that does not move easily from the insertion portion 110 of the lumen 100 Will.
또한, 본 발명의 스텐트(1)의 직경을 최소로 수축시켜 준 상태에서 삽입장치(미도시)를 이용하여 내강(100)의 삽입부위(110)로 삽입하게 되는데, 스텐트(1)가 내강의 삽입부위에 삽입된 후 팽창할 때 이동방지부(9)가 내강속으로 박히면서 고정되어 지그재그부(5)의 이동을 방지할 수 있게 되는 것이다.In addition, in the state in which the diameter of the stent 1 of the present invention is contracted to the minimum, the insertion device (not shown) is inserted into the insertion part 110 of the lumen 100, and the stent 1 of the lumen When the expansion is inserted into the insertion part and then the movement preventing portion 9 is fixed while being driven into the lumen, thereby preventing movement of the zigzag portion 5.
이와 같이 본 발명은 내강의 협착된 부위에 삽입된 상태로 보다 견고하게 고정될 수 있도록 하여 내강의 삽입된 부위로부터 쉽게 이동하지 않는 안정성을 향상할 수 있는 효과가 있는 것이다.As described above, the present invention can be more firmly fixed in the state of being inserted into the constricted portion of the lumen, thereby improving stability that is not easily moved from the inserted portion of the lumen.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990035038A KR100337650B1 (en) | 1999-08-23 | 1999-08-23 | A expandable stents for prevention of migration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990035038A KR100337650B1 (en) | 1999-08-23 | 1999-08-23 | A expandable stents for prevention of migration |
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| KR2019990009741 Division | 1999-06-03 |
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| KR100337650B1 true KR100337650B1 (en) | 2002-05-23 |
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| KR1019990035038A KR100337650B1 (en) | 1999-08-23 | 1999-08-23 | A expandable stents for prevention of migration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101498584B1 (en) * | 2013-05-15 | 2015-03-04 | 주식회사 스텐다드싸이텍 | Stent to prevent migration |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100455359B1 (en) * | 2001-04-04 | 2004-11-08 | (주) 태웅메디칼 | Self-expaniding stent |
| KR100448329B1 (en) * | 2001-04-10 | 2004-09-10 | 주식회사 스텐텍 | Esophageal stent |
| US8778008B2 (en) * | 2006-01-13 | 2014-07-15 | Aga Medical Corporation | Intravascular deliverable stent for reinforcement of vascular abnormalities |
| CN113017753A (en) * | 2021-02-26 | 2021-06-25 | 珠海通桥医疗科技有限公司 | Blood vessel support |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5330500A (en) * | 1990-10-18 | 1994-07-19 | Song Ho Y | Self-expanding endovascular stent with silicone coating |
| KR19990065081A (en) * | 1998-01-07 | 1999-08-05 | 송호영 | Lumen extension stent |
-
1999
- 1999-08-23 KR KR1019990035038A patent/KR100337650B1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5330500A (en) * | 1990-10-18 | 1994-07-19 | Song Ho Y | Self-expanding endovascular stent with silicone coating |
| KR19990065081A (en) * | 1998-01-07 | 1999-08-05 | 송호영 | Lumen extension stent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101498584B1 (en) * | 2013-05-15 | 2015-03-04 | 주식회사 스텐다드싸이텍 | Stent to prevent migration |
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| KR20010005434A (en) | 2001-01-15 |
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