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KR100943255B1 - Stent - Google Patents

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KR100943255B1
KR100943255B1 KR1020080070413A KR20080070413A KR100943255B1 KR 100943255 B1 KR100943255 B1 KR 100943255B1 KR 1020080070413 A KR1020080070413 A KR 1020080070413A KR 20080070413 A KR20080070413 A KR 20080070413A KR 100943255 B1 KR100943255 B1 KR 100943255B1
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stent
hook
biodegradable polymer
stents
present
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KR20100009675A (en
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신경민
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(주) 태웅메디칼
신경민
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Priority to KR1020080070413A priority Critical patent/KR100943255B1/en
Priority to US12/344,640 priority patent/US20090192588A1/en
Priority to JP2009005309A priority patent/JP2009178545A/en
Priority to DE200960000196 priority patent/DE602009000196D1/en
Priority to CN2009100019609A priority patent/CN101496754B/en
Priority to EP20090250158 priority patent/EP2085050B1/en
Publication of KR20100009675A publication Critical patent/KR20100009675A/en
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Publication of KR100943255B1 publication Critical patent/KR100943255B1/en
Priority to US15/044,892 priority patent/US20160158037A1/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
    • 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
    • A61F2/89—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 comprising two or more adjacent rings flexibly connected by separate members
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0008—Fixation appliances for connecting prostheses to the body

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Pulmonology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Materials For Medical Uses (AREA)

Abstract

본 발명은 스텐트에 관한 것으로서, 좀더 상세하게는 스텐트의 외측 양측에 각각 별도의 걸고리로 엮어 고정하되 상기 걸고리는 생분해성 폴리머로 제조하여 일정시간이 지나면서 체액에 의해 녹아 없어지도록 한 스텐트에 관한 것으로, 초탄성 형상기억합금 와이어(11)를 교차되게 엮어 다수의 마름모형상의 공간부를 갖는 중공(中空)식 원통형 몸체(15)를 형성, 한 스텐트(10) 또는 상기 원통형 몸체(15)에 커버체(45)를 피복한 커버드스텐트(Covered Stent)(10)의 외측에 각각 별도의 걸고리(100)를 실과 같은 별도의 체결수단(101)을 이용하여 적어도 1개소 이상에 고정하되 상기 걸고리(100)는 생분해성 폴리머(Biodegradable Polymer)로 이루어진 것을 제공한다.The present invention relates to a stent, and more particularly, to a stent, each of which is fixed to each of the outer sides of the stent by a separate hook, but the hook is made of a biodegradable polymer so as to be dissolved by body fluids after a certain time. , Interweaving the superelastic shape memory alloy wire 11 to form a hollow cylindrical body 15 having a plurality of rhombic spaces, a stent 10 or a cover body on the cylindrical body 15. Each of the separate hooks 100 on the outside of the covered stent 10 covering 45 is fixed to at least one or more places using separate fastening means 101 such as a thread, but the hooks 100 ) Provides one consisting of a biodegradable polymer.

이러한 본 발명의 스텐트의 걸고리가 관 내벽에 삽입되게 걸려 지지 되면서 견고한 설치 상태를 유지하게 하고, 이때 상기 걸고리는 생분해성 폴리머로 제조하여 일정기간의 시간이 지나면서 체액에 의해 서서히 녹아 없어지도록 하여 스텐트의 제거시에도 용이한 시술에 의하여 해결할 수 있도록 하였다.The hook of the stent of the present invention is supported by being inserted into the inner wall of the tube to maintain a solid installation state, wherein the hook is made of a biodegradable polymer so that it gradually melts away by body fluids after a certain period of time. Easily resolved by the procedure even when the removal of.

스텐트, 커버드스텐트, 생분해성 폴리머 스텐트, 만성폐쇄성 폐질환용 스텐트. Stents, covered stents, biodegradable polymer stents, stents for chronic obstructive pulmonary disease.

Description

스텐트{A STENT}Stent {A STENT}

본 발명은 스텐트에 관한 것으로서, 좀더 상세하게는 스텐트의 외측 양측에 각각 별도의 걸고리로 엮어 고정하되 상기 걸고리는 생분해성 폴리머로 제조하여 일정시간이 지나면서 체액에 의해 녹아 없어지도록 한 스텐트에 관한 것이다.The present invention relates to a stent, and more particularly, to a stent, each of which is fixed to the outer both sides of the stent by a separate hook, and the hook is made of a biodegradable polymer so that it can be dissolved by body fluids over time. .

일반적으로 각종 장기의 협착, 혈관의 협착, 만성폐쇄성 폐질환(Chronic Obstructive Pulmonary Disease, COPD)의 악성 종양이 아니면서도 폐의 말단관, 미세호훼관 등의 미세관이 막히는 부위에는 협관의 확장 유지를 위해 스텐트를 삽입 시술하고 있다.In general, it is not necessary to maintain the expansion of the ducts at the site where the microtubules such as the terminal and microtubules of the lungs are blocked, but not malignant tumors of various organs, blood vessels, and chronic obstructive pulmonary disease (COPD). A stent is being inserted.

그중에서 상기한 폐의 미세관, 특히 협관 부위로 시술되는 스텐트는 호흡에 의한 흡, 배기의 압력에 의해 설치 상태를 견고히 유지하지 못하고 협관 부위에서 벗어나는 등의 문제점이 있었다.Among them, the above-described lung microtubules, in particular, the stent treated by the canalic region, have problems such as being unable to maintain the installation state firmly by the pressure of inhalation and exhaustion due to breathing, and deviating from the buccal region.

한편, 종래 폐, 담관, 대장, 소장, 식도 등의 협관 부위로 시술하는 스텐트가 개시된 바 있는데, 이는 스텐트 중앙 외주연에 만곡 걸림돌기를 돌출 형성하는 것이다.On the other hand, the prior art has been disclosed a stent to be treated in the narrowing, such as the lung, bile duct, large intestine, small intestine, esophagus, which is to form a protruding curved protrusion on the outer periphery of the center of the stent.

즉, 도 1에 도시된 바와 같이 와이어(2)를 이용한 스텐트(5) 제조시, 상기 스텐트의 중앙 원주상으로 만곡 걸림돌기(3)를 돌출되게 절곡 형성한 것이다.That is, as shown in FIG. 1, when the stent 5 is manufactured using the wire 2, the curved stopping protrusion 3 is bent to protrude from the center circumference of the stent.

이러한 스텐트는 폐, 담관, 대장, 소장, 식도 등의 협관 내부로 삽입 시술되어 스텐트의 중앙 원주상에 형성된 만곡 걸림돌기(3)가 협관의 내벽에 밀착되어 지지되면서 설치 상태를 유지하도록 한 것이다.The stent is inserted into the canal of the lung, bile duct, large intestine, small intestine, esophagus, etc., so that the curved locking protrusion 3 formed on the central circumference of the stent is held in close contact with the inner wall of the buccal tube to maintain the installation state.

그러나 이러한 종래 스텐트는 상기한 만곡걸림돌기(3)가 협관의 내벽에 밀착되는 상태로 지지하여 시술된 설치부위에서 미끄러지는 것을 방지할 수는 있으나 시술한 후에 장시간이 지나면서 병변부위가 상기한 만곡걸림돌기(3)를 감싸는 것에 으하여 이을 내장하거나 병변부위가 끼이게 된다.However, this conventional stent is supported by the curved locking projection 3 in close contact with the inner wall of the buccal canal to prevent slipping at the treated installation site, but after the procedure, the lesion site is curved for a long time. By enclosing the locking projections (3) it is embedded or the lesion is pinched.

이러한 이유로 상기한 스텐트를 제거하고자 할 때에는 스텐트에 침투한 암등과 같은 병변부위를 별도로 제거해야 하는 등의 문제점이 발생하고 있다.For this reason, when the stent is to be removed, problems such as the need to separately remove lesions such as cancers that have penetrated the stent have arisen.

본 발명은 상기한 종래 기술이 갖는 제반 문제점을 해결하고자 발명된 것으로서, 스텐트의 외측 양측에 각각 별도의 걸고리를 엮어 고정하여 걸고리가 관 내벽에 삽입되게 걸려 지지 되면서 견고한 설치 상태를 유지하게 하고, 이때 상기 걸고리는 생분해성 폴리머로 제조하여 일정기간의 시간이 지나면서 체액에 의해 서서히 녹아 없어지도록 하여 스텐트의 제거시에도 용이한 시술에 의하여 해결할 수 있도록 하였다.The present invention has been invented to solve the various problems of the prior art as described above, by fixing the separate hooks on both sides of the outer side of the stent so that the hooks are inserted into the inner wall of the tube to be supported while maintaining a solid installation state, The hook was made of a biodegradable polymer so that it gradually melted away by the body fluid after a certain period of time so that it could be solved by an easy procedure even when the stent was removed.

이러한 본 발명은, 초탄성 형상기억합금 와이어를 교차되게 엮어 다수의 마름모형상의 공간부를 갖는 중공(中空)식 원통형 스텐트몸체의 외측 양측에 각각 별도의 걸고리를 엮어 고정하여 걸고리가 관 내벽에 삽입되게 걸려 지지 되면서 병변부위에서 견고한 설치 상태를 유지하게 하고, 이때 상기 걸고리는 생분해성 폴리머로 제조하여 일정기간의 시간이 지나면서 체액에 의해 서서히 녹아 없어지도록 하였다.The present invention, weaving the super-elastic shape memory alloy wire to cross and weave a separate hook on each of both sides of the hollow cylindrical stent body having a plurality of rhombus-shaped spaces to fix the hook is inserted into the inner wall of the tube While being supported, it was maintained to be firmly installed at the lesion site. At this time, the hook was made of a biodegradable polymer so that it gradually melted away by the body fluid over a period of time.

이러한 이유로 스텐트의 제거 시술시에도 용이하게 제거할 수 있게 된다.For this reason, it can be easily removed even during the removal of the stent.

이러한 본 발명은 시술 후에 일정한 기간의 시간 동안 스텐트가 걸고리가 협관 내벽을 가압 지지하도록 하여 병변부위에서 이탈되는 것을 방지하면서도 상기한 생분해성 폴리머 재질로 구성된 만곡걸림돌기가 체액에 의하여 서서히 녹아 없어지도록 하여 스텐트의 제거시 용이하게 제거할 수 있도록 하는 효과가 있다.The present invention allows the stent to support the inner wall of the canal ducts for a certain period of time after the procedure, while preventing the detachment from the lesion site while the curved hooking protrusion made of the biodegradable polymer material is gradually dissolved by the body fluid. There is an effect that can be easily removed during the removal of.

이하, 상기한 본 발명의 바람직한 실시 예를 첨부도면을 참조하여 구체적으로 살펴보기로 한다.Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described in detail.

본 발명은 초탄성 형상기억합금 와이어를 교차되게 엮어 다수의 마름모형상의 공간부를 갖는 중공(中空)식 원통형몸체로 구성하는 스텐트를 이용하고 있다.The present invention utilizes a stent composed of a hollow cylindrical body having a plurality of rhombic spaces by interlacing superelastic shape memory alloy wires.

즉, 본 발명의 스텐트는 도 2 내지 도 6에 도시된 바와 같이, That is, the stent of the present invention, as shown in Figures 2 to 6,

초탄성 형상기억합금 와이어(11)를 교차되게 엮어 다수의 마름모형상의 공간부를 갖는 중공(中空)식 원통형 몸체(15)를 형성한 스텐트(10) 또는 상기 원통형 몸체(15)에 커버체(45)를 피복한 커버드스텐트(Covered Stent)(10)에 있어서,Cover body 45 on the stent 10 or the cylindrical body 15 to form a hollow cylindrical body 15 having a plurality of rhombic spaces by weaving the super-elastic shape memory alloy wire 11 to cross. In the covered stent 10 coated with

상기 스텐트(10)의 외측에 별도의 걸고리(100)를 실과 같은 별도의 체결수단(101)을 이용하여 적어도 1개소 이상에 걸고리(100)를 고정하되 상기 걸고리(100)는 생분해성 폴리머(Biodegradable Polymer)로 구성한다.The hook 100 is fixed to at least one or more places using a separate fastening means 101 such as a separate hook 100 on the outside of the stent 10, but the hook 100 is a biodegradable polymer (Biodegradable). Polymer).

이때 상기한 걸고리(100)는 스텐트(10)의 길이에 따라 한쌍의 걸고리(100)를 한 단위로 구성하여 일정간격을 두고 적어도 1개소 이상 설치되는 것이 바람직하다. At this time, the hook 100 is preferably configured by at least one or more places at a predetermined interval by configuring a pair of hooks (100) in one unit according to the length of the stent (10).

이때 상기한 걸고리(100)는 생분해성 폴리머로 제작되는데, 이는 PLLA(Poly L-lactic acid), PLA(Poly lactic acid), PGA(Polyglycolic acid),PGLA(Poly glycolide-co-L- lactide acid), PDO)Polydioxanone) 및 PGCL(Poly glycolide-co-caprolactone)등이 사용된다.At this time, the hook 100 is made of a biodegradable polymer, which is polylactic acid (PLLA), polylactic acid (PLA), polyglycolic acid (PGA), polyglycolide-co-L-lactide acid (PGLA). , PDO) Polydioxanone) and PGCL (Poly glycolide-co-caprolactone) are used.

그러나 본 발명에서는 상기한 걸고리(100)가 생분해성 폴리머이여서 체액에 의하여 서서히 녹도록 하여 일정 기간의 시간이 지난 후에는 상기한 스텐트의 제거를 용이하게 하고자 하는 데 있는 것이지 상기한 생분해성 폴리머는 인체에 유해하지 않은 그 어떠한 재질의 것을 사용할 수 있음을 첨언한다.However, in the present invention, the hook 100 is a biodegradable polymer, so that it is gradually dissolved by body fluid so that after a certain period of time, the removal of the stent is intended. Note that any material of non-hazardous material may be used.

또한, 본 발명에서는 상기한 걸고리(100)는 스텐트(10)의 외측 양측에 각각 설치하여도 될 것이고, 어느 한쪽에 설치하여도 단지 설치된 병변부위에서 미끄러 지는 정도가 한 쌍을 설치한 것에 비하여 쉽게 병변부위에서 미끄러져 이탈되는 문제가 있을 뿐이며 그 실시는 가능하다.In addition, in the present invention, the hook 100 may be installed on both sides of the outer side of the stent 10, and even if it is installed on either side, the degree of slipping at the lesion site is easily compared with a pair. There is only a problem of slipping away from the lesion and the implementation is possible.

그리고 스텐트(10)의 길이에 따라 한쌍의 걸고리(100)를 한단위로 하여 일정간격을 두고 얼마든지 설치할 수 있음은 물론이다.And according to the length of the stent 10, a pair of hooks (100) as a unit of course can be installed at any interval with a certain interval.

이러한 경우에는 병변부위가 길어서 길이가 긴 스텐트(10)를 사용하는 경우에 많은 단위수의 걸고리(100)를 설치함으로서, 걸고리(100)가 병변부위의 협관 내벽을 충분히 가압 지지하도록 하여 병변부위에서 이탈되는 충분히 방지할 수 있다.In this case, when the long stent 10 is used to install the long stent 10, a large number of hooks 100 are provided, so that the hook 100 is sufficiently pressurized to support the inner wall of the duct in the lesion. It can prevent enough to break away.

또한 상기 걸고리(100)를 스텐트(10)의 외측면 어느 일측에 만 설치되는 설치하여도 되고, 지그재그의 형태로 설치할 수 있다.In addition, the hook 100 may be installed on only one side of the outer surface of the stent 10, or may be installed in a zigzag form.

미설명부호로서, 55는 폐(50)의 미세관을 나타내는 것이다.Unexplained reference numeral 55 denotes a microtubule of the lung 50.

다음은 상기와 같이 구성되는 본 발명의 시술 및 작용 효과에 대해 살펴보기로 한다.Next will be a look at the treatment and effect of the present invention configured as described above.

본 발명의 스텐트(10)를 설명함에 있어, 폐의 말단관, 미세호훼관 등의 미세관이 막히는 만성폐쇄성 폐질환(Chronic Obstructive Pulmonary Disease, COPD)에 시술되는 것을 예를 들어 설명하기로 한다.In the description of the stent 10 of the present invention, it will be described with an example of being subjected to Chronic Obstructive Pulmonary Disease (COPD) in which microtubules such as lung tube, microtubule, and the like are blocked.

즉, 본 발명의 협관되는 폐(50)의 말단관, 미세호훼관 등의 미세관(55)으로 별도의 삽입장치에 의해 삽입하여 협관 부위를 확장하도록 시술하게 되는 것이다.That is, it is to be inserted into the microtubules 55, such as the terminal tube, the microtubule tube of the lung 50 to be narrowed by the present invention by a separate insertion device to expand the buccal tract area.

이때 상기 스텐트(10)의 외측면에 각각 고정수단(101)에 의하여 엮어서 고정된 걸고리(100)의 끝단이 협관의 내벽을 가압하는 것에 의하여 걸림 작동을 하기 때문에 스텐트(10)을 변변부위에 견고하게 설치되게 되고, 이러한 견고한 설치를 통하여 병변부위에서 이탈되는 것을 방지할 수 있게 된다.At this time, the end of the hook 100, which is woven by the fixing means 101 on the outer side of the stent 10, is secured by pressing the inner wall of the buccal canal so that the stent 10 is firmly connected to the stool. It is to be installed in this way, it is possible to prevent the departure from the lesion through this solid installation.

이러한 시술 후에, 일정한 기간의 시간이 지나면서 상기한 걸고리(100)는 생분해성 폴리머이므로 체액에 의하여 서서히 녹아 없어지게 된다.After such a procedure, the hook 100 is a biodegradable polymer over a certain period of time, so that it is gradually dissolved by the body fluid.

이러한 걸고리(100)가 체액에 의하여 서서히 제거되기 때문에 스텐트(10)를 병변부위에서 제거하고자 할 때 용이하게 제거할 수 있게 된다.Since the hook 100 is gradually removed by the body fluid, the stent 10 can be easily removed when trying to remove the lesion from the lesion site.

즉, 병변부위가 자라나도 걸고리(100)이 서서히 제거되기 때문에 암등과 같은 병변원인물이 걸고리(100)를 감싸는 등의 문제점이 근본적으로 배제된다.That is, even when the lesion is grown, the hook ring 100 is gradually removed, and thus problems such as lesions surrounding the hook ring 100 such as cancer are essentially excluded.

이러한 본 발명은 협관 내벽면에 삽입되게 시술되어도 문제가 되지 않는 것은 담관이나 식도 등과 같이 담즙이나 기타 내용물이 유동하는 것이 아니고 오직 호흡에 따라 흡,배기가 이루어지는 미세관이기 때문에 협관 내벽면에 삽입되게 시술하여도 가능한 것이다.The present invention is not a problem even if the procedure to be inserted into the inner wall of the buccal duct is not a flow of bile or other contents such as bile ducts or esophagus, but because it is a microtubule in which the inhalation, exhaust according to breathing is inserted into the inner wall of the buccal duct It is also possible to perform the procedure.

특히, 본 발명에서 상기한 걸고리(100)에 대해 PLLA(Poly L-lactic acid), PLA(Poly lactic acid), PGA(Polyglycolic acid),PGLA(Poly glycolide-co-L- lactide acid), PDO)Polydioxanone) 및 PGCL(Poly glycolide-co-caprolactone)등의 생분해성 폴리머에 대하여 설명하고 있으나 이에 한하지 아니하고 체액에 의하여 분해되는 것은 모두 포함된다.Particularly, in the present invention, the polyl-lactic acid (PLLA), polylactic acid (PLA), polyglycolic acid (PGA), polyglycolide-co-L-lactide acid (PGLA), and PDO (PLA) for the aforementioned hook 100 Although biodegradable polymers such as polydioxanone (PGCL) and poly glycolide-co-caprolactone (PGCL) have been described, they are not limited thereto.

도 1은 종래 스텐트를 보여주는 정면도.1 is a front view showing a conventional stent.

도 2(가),(나),(다),(라)는 본 발명 스텐트를 보여주는 정면도.Figure 2 (a), (b), (c), (d) is a front view showing the stent of the present invention.

도 3은 본 발명의 요부 확대도,3 is an enlarged view illustrating main parts of the present invention;

도 4(가),(나)는 본 발명 스텐트의 다른 실시 예를 보여주는 정면도.Figure 4 (a), (b) is a front view showing another embodiment of the stent of the present invention.

도 5(가),(나)는 본 발명의 다른 실시예 Figure 5 (a), (b) is another embodiment of the present invention

도 6은 본 발명의 사용 상태를 보여주는 정면도.6 is a front view showing a state of use of the present invention.

**도면의 주요 부분에 대한 부호의 설명**** Description of the symbols for the main parts of the drawings **

10: 스텐트 100: 걸고리 10: stent 100: hook

Claims (5)

초탄성 형상기억합금 와이어(11)를 교차되게 엮어 다수의 마름모형상의 공간부를 갖는 중공(中空)식 원통형 몸체(15)를 형성한 스텐트(10)에 있어서, In the stent 10 in which a hollow cylindrical body 15 having a plurality of rhombic spaces is interwoven by intersecting the superelastic shape memory alloy wire 11, 상기 스텐트(10)의 외측에 구성되는 실과 같은 별도의 체결수단(101)과;A separate fastening means (101) such as a thread configured on the outside of the stent (10); 상기 체결수단(101)에 체결되고, 스텐트(10)의 길이에 따라 한쌍의 걸고리(100)를 한 단위로 일정간격을 두고 적어도 1개소 이상 설치되거나 스텐트(10)의 외측면 어느 일측에 만 설치되는 걸고리(100)와;Is fastened to the fastening means 101, at least one or more places at a predetermined interval with a pair of hooks (100) according to the length of the stent 10 in one unit or installed only on any one side of the outer surface of the stent (10) Being hooked with 100; 상기 체결수단(101)을 이용하여 걸고리(100)를 적어도 1개소 이상에 고정하되, 상기 걸고리(100)는 생분해성 폴리머(Biodegradable Polymer)로 이루어진 것을 특징으로 하는 스텐트.The hook 100 is fixed to at least one place using the fastening means 101, wherein the hook 100 is stent, characterized in that made of a biodegradable polymer. 청구항 1에 있어서,The method according to claim 1, 상기 생분해성 폴리머로가 PLLA(Poly L-lactic acid), PLA(Poly lactic acid), PGA(Polyglycolic acid),PGLA(Poly glycolide-co-L- lactide acid), PDO)Polydioxanone) 및 PGCL(Poly glycolide-co-caprolactone)에서 선택된 1종 또는 2종을 서로 혼합된 것임을 특징으로 하는 스텐트.The biodegradable polymers include PLL (Poly L-lactic acid), PLA (Poly lactic acid), PGA (Polyglycolic acid), PGLA (Poly glycolide-co-L-lactide acid), PDO (Polydioxanone) and PGCL (Poly glycolide) -stent, characterized in that one or two selected from co-caprolactone) is mixed with each other. 삭제delete 삭제delete 삭제delete
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KR1020080070413A KR100943255B1 (en) 2008-07-21 2008-07-21 Stent
US12/344,640 US20090192588A1 (en) 2008-01-29 2008-12-29 Biodegradable double stent
JP2009005309A JP2009178545A (en) 2008-01-29 2009-01-14 In-vivo degradable double-structure stent
CN2009100019609A CN101496754B (en) 2008-01-29 2009-01-21 Biodegradable double stent
DE200960000196 DE602009000196D1 (en) 2008-01-29 2009-01-21 Biodegradable double stent
EP20090250158 EP2085050B1 (en) 2008-01-29 2009-01-21 Biodegradable double stent
US15/044,892 US20160158037A1 (en) 2008-01-29 2016-02-16 Biodegradable double stent

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