WO2020222364A1 - Removable stent including loop and pulling member for removing stent - Google Patents

Removable stent including loop and pulling member for removing stent Download PDF

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Publication number
WO2020222364A1
WO2020222364A1 PCT/KR2019/010381 KR2019010381W WO2020222364A1 WO 2020222364 A1 WO2020222364 A1 WO 2020222364A1 KR 2019010381 W KR2019010381 W KR 2019010381W WO 2020222364 A1 WO2020222364 A1 WO 2020222364A1
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Prior art keywords
stent
loop
stent body
removable
present
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PCT/KR2019/010381
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French (fr)
Korean (ko)
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강성권
이영재
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주식회사 에스앤지바이오텍
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Publication of WO2020222364A1 publication Critical patent/WO2020222364A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • 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
    • 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
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts

Definitions

  • the present invention relates to a removable stent, and more particularly, to a removable stent including a pull member and a loop for removing the stent.
  • Medical stents are generally used to expand the narrowed lumen or prevent the expanded lumen from narrowing again.
  • These medical stents are implanted in the lumen to expand the lumen, thereby preventing stenosis occurring in the lumen, and after the stent implanted in the lumen fulfills this role, it is removed by a stent removal device.
  • the stent implanted in the lumen is not accurately implanted at the desired location or is dislodged from the original position, the stent implanted in the lumen is removed to perform a reoperation.
  • the removable stent has a structure that can be removed by a stent removal device.
  • a removable stent mainly includes a stent body and a removal member connected to the stent body.
  • a method of removing the stent there is a method of inserting a stent removal device into the lumen and pulling the removal member connected to the stent, or pulling the removal member by walking.
  • the removal member include a pull member such as a pull line, or a loop.
  • the stent in which a pull member such as a pull line is formed as a removal member can be removed by pulling the pull member by a removal device.
  • the removal device used at this time must have a gripping means capable of holding the pull member.
  • the procedure for removing the stent having the pulling member formed thereon should be performed while visually checking the inside of the lumen with an endoscope so that the holding means provided in the removal device can hold the pulling member at an appropriate position. Therefore, this removal method is mainly used when an endoscopic procedure is performed, and is mainly used in internal medicine.
  • a stent having a loop formed therein rather than a pull member such as a pull line may be removed by the loop being pulled by the removal device.
  • the removal device used must be fitted to the loop to pull the loop, so it must have a configuration in the form of a hook.
  • This removal method is mainly used when a laparoscopic procedure is performed, and is mainly used in radiology.
  • a removal device capable of removing the stent is different, and in each case, a treatment that can perform a removal procedure is also different.
  • Patent Document 1 Unexamined Patent Publication 10-2010-0119068
  • the present invention is to solve the above problems, and to provide a removable stent including both a pull member and a loop for removing the stent.
  • the present invention provides a removable stent.
  • the wires are crossed with each other to form a plurality of holes on the surface, the stent body having a hollow tubular shape, one or more pulling members coupled to the end of the stent body, and the end of the stent body It characterized in that it comprises a loop formed.
  • the present invention is characterized in that the pulling member is formed in the outer direction of the stent body, and is formed extending in the longitudinal direction of the stent body so that it can be pulled by a removal tool inserted from the outside of the stent body.
  • the loop is formed in the inner direction of the end of the stent body, and at least a portion of the loop is spaced between the wires of the end of the stent body so that it can be engaged by a removal hook inserted from the outside of the stent body. It is characterized in that it is formed to have.
  • the present invention is also characterized in that the loop is formed by alternately inserting a medical thread into the wires at the ends of the stent body.
  • the present invention is also characterized in that the removal tool is a medical endoscopic forceps.
  • the present invention is also characterized in that the distance between the wires and the loop at the end of the stent body is at least 1mm.
  • the present invention is also characterized in that the loop has a circular or polygonal shape.
  • the present invention is also characterized in that it further comprises a cover provided to surround one side of the outer peripheral surface of the stent body.
  • the present invention is also characterized in that the pull member is formed by tying both ends of a medical thread forming a loop.
  • the removable stent of the present invention is not limited to the method of removing the stent and the type of medical departments such as internal medicine and radiology, and has an effect that a removal procedure can be performed.
  • the removable stent of the present invention includes both a pull member and a loop for removing the stent, so that it may be removed by pulling the pull member through a removal device including a gripping means, and includes a hook, etc. It can also be removed by pulling the loop through the removal device.
  • the removable stent of the present invention has the advantage of being able to be removed through endoscopic surgery and also through laparoscopic surgery.
  • the removable stent of the present invention can be removed without being limited to the removal method and the clinic.
  • FIG. 1 is a view showing an embodiment of a removable stent comprising a pull member and a loop according to the present invention
  • FIG. 2 is a cross-sectional view of an embodiment of a removable stent comprising a pull member and a loop according to the present invention
  • FIG 3 is a view showing the end of an embodiment of a removable stent comprising a pull member and a loop according to the present invention.
  • FIG. 4 is a view showing another embodiment of a removable stent including a pull member and a loop according to the present invention
  • FIG. 5 is a view showing a cross-section of another embodiment of a removable stent including a pull member and a loop according to the present invention.
  • the removable stent 10 includes a stent body 100, a pull member 110, and a loop 120.
  • the stent body 100 has a plurality of holes formed on its surface by crossing wires, and has a hollow tubular shape. Preferably, one side of the outer circumferential surface of the stent body 100 is covered by the cover part 200.
  • the outer surface of the stent body 100 may be uneven as in the embodiment illustrated in FIG. 1, or may be smooth as in the other exemplary embodiment illustrated in FIG. 4. However, it is not limited to the form of the above embodiments.
  • the pull member 110 is coupled to the end of the stent body 100 and connected to the stent body 100.
  • the pull member 110 is formed in the outer direction of the stent body 100 and is formed to extend in the longitudinal direction of the stent body 100 so that it can be pulled by a removal tool inserted from the outside of the stent body 100 .
  • the length of the pull member 110 is not limited, but is formed to extend long enough so that it can be pulled by a removal tool.
  • the removal tool is a tool capable of removing the removable stent 10 by pulling the pull member 110, and is preferably a medical endoscope forceps.
  • the loop 120 is formed at the end of the stent body 100. And, at least a portion of the loop 120 is formed in the inner direction of the end of the stent body 100, the end of the stent body 100 so that it can be engaged by a removal hook inserted from the outside of the stent body 100 It is formed to have a gap with the wires of. At this time, at least a part of the loop 120 is formed to have a gap with the wires at the end of the stent body 100, at least a part of the loop 120 is a wire forming the edge of the end of the stent body 100 It means that it is not formed to be in contact with the field, but is formed to be separated at a certain interval. By having the gap, the hook for removal may enter the gap and be caught in the loop 120.
  • the size of the gap between at least a portion of the loop 120 and the wires at the ends of the stent body 100 may be set so that the hook for removal can be easily caught on the loop 120.
  • the spacing is at least 1 mm.
  • the loop 120 is formed in a form in which a medical thread is alternately inserted into the wires at the ends of the stent body 100.
  • the pull member 110 is formed by tying both ends of the medical thread forming the loop 120.
  • the pull member 110 may be formed by bundling a separate medical thread other than a medical thread forming the loop 120.
  • the shape of the loop 120 may be any, but is preferably a circular or polygonal shape, more preferably a triangular shape.
  • the number of the pull member 120 and the loop 120 is not limited, but is at least one or more.
  • the pulling member 120 and the loop 120 may be made of a flexible material that freely bends in order to move freely even if it is moved by the activity or flow of the human body and not to irritate the organs.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Transplantation (AREA)
  • Vascular Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
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  • Gastroenterology & Hepatology (AREA)
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Abstract

The present invention relates to a removable stent including: a stent body; at least one pulling member coupled to the end of the stent body; and a loop formed at the end of the stent body, wherein: the pulling member is formed outward from the stent body, and extends in the longitudinal direction of the stent body so as to be pulled by a removal tool; the loop is formed inward from the end of the stent body; and spaces are left between at least a part of the loop and wires provided at the end of the stent body, so as to hook the loop by a removal hook.

Description

스텐트를 제거하기 위한 당김 부재와 루프를 포함하는 제거 가능한 스텐트Removable stent including pull member and loop to remove stent
본 발명은, 제거 가능한 스텐트에 관한 것으로서, 보다 상세하게는 스텐트를 제거하기 위한 당김 부재와 루프를 포함하는 제거 가능한 스텐트에 관한 것이다.The present invention relates to a removable stent, and more particularly, to a removable stent including a pull member and a loop for removing the stent.
의료용 스텐트는 일반적으로 좁아진 내강을 확장시키거나 확장된 내강이 다시 좁아지지 않도록 하기 위해 사용되고 있다. Medical stents are generally used to expand the narrowed lumen or prevent the expanded lumen from narrowing again.
이러한 의료용 스텐트는 내강에 이식되어 내강을 확장시킴으로써 내강에 발생하는 협착증상을 방지하는 역할을 하고, 내강에 이식된 스텐트가 이러한 역할을 다한 후에는 스텐트 제거 장치에 의해 제거된다.These medical stents are implanted in the lumen to expand the lumen, thereby preventing stenosis occurring in the lumen, and after the stent implanted in the lumen fulfills this role, it is removed by a stent removal device.
내강에 이식된 스텐트가 원하는 위치에 정확히 이식되지 않은 경우, 또는 제자리에서 이탈한 경우에도, 재시술을 수행하기 위해 내강에 이식된 스텐트를 제거한다.If the stent implanted in the lumen is not accurately implanted at the desired location or is dislodged from the original position, the stent implanted in the lumen is removed to perform a reoperation.
일반적으로, 제거 가능한 스텐트는 스텐트 제거 장치에 의해 제거할 수 있는 구조로 되어 있다. 이러한 제거 가능한 스텐트는, 주로 스텐트 본체 및 스텐트 본체에 연결되어 있는 제거 부재를 포함하고 있다. In general, the removable stent has a structure that can be removed by a stent removal device. Such a removable stent mainly includes a stent body and a removal member connected to the stent body.
스텐트를 제거하는 방식으로는, 내강에 스텐트 제거 장치를 삽입하여 스텐트에 연결되어 있는 제거 부재를 잡아서 당기거나, 제거 부재를 걸어서 당기는 방식이 있다. 이러한 제거 부재로는 당김줄 등의 당김 부재, 또는 루프를 예로 들 수 있다.As a method of removing the stent, there is a method of inserting a stent removal device into the lumen and pulling the removal member connected to the stent, or pulling the removal member by walking. Examples of the removal member include a pull member such as a pull line, or a loop.
제거 부재로서 당김줄 등의 당김 부재가 형성된 스텐트는, 제거 장치에 의해 당김 부재가 잡아 당겨짐으로써 제거될 수 있다. 이때 사용되는 제거 장치는 당김 부재를 잡을 수 있는 파지 수단을 구비해야 한다. 이러한 당김 부재가 형성된 스텐트를 제거하는 시술은, 제거 장치에 구비된 파지 수단이 당김 부재를 적절한 위치에서 잡을 수 있도록 하기 위해, 내시경으로 내강의 내부를 육안으로 확인하면서 진행되어야 한다. 따라서, 이러한 제거 방법은 내시경적 시술이 수행될 때 주로 이용되고, 내과에서 주로 이용된다.The stent in which a pull member such as a pull line is formed as a removal member can be removed by pulling the pull member by a removal device. The removal device used at this time must have a gripping means capable of holding the pull member. The procedure for removing the stent having the pulling member formed thereon should be performed while visually checking the inside of the lumen with an endoscope so that the holding means provided in the removal device can hold the pulling member at an appropriate position. Therefore, this removal method is mainly used when an endoscopic procedure is performed, and is mainly used in internal medicine.
한편, 제거 부재로서 당김줄 등의 당김 부재가 아니라 루프가 형성된 스텐트는, 제거 장치에 의해 루프가 걸어 당겨짐으로써 제거될 수 있다. 이때 사용되는 제거 장치는 루프를 당기기 위해 루프에 걸어 맞춰져야 하므로 갈고리와 같은 형태의 구성을 구비해야 한다. 이러한 제거 방법은 복강경적 시술이 수행될 때 주로 이용되고, 영상의학과에서 주로 이용된다. On the other hand, as the removal member, a stent having a loop formed therein rather than a pull member such as a pull line may be removed by the loop being pulled by the removal device. At this time, the removal device used must be fitted to the loop to pull the loop, so it must have a configuration in the form of a hook. This removal method is mainly used when a laparoscopic procedure is performed, and is mainly used in radiology.
당김 부재가 형성된 스텐트와 루프가 형성된 스텐트는 각각 그 제거 방법에 있어서 차이가 있는바, 이를 제거할 수 있는 제거 장치가 상이하고, 각각의 경우 제거시술을 수행할 수 있는 진료과도 상이하다. Since the stent with the pull member and the stent with a loop have a difference in their removal method, a removal device capable of removing the stent is different, and in each case, a treatment that can perform a removal procedure is also different.
따라서, 스텐트에 당김 부재만 형성되어 있거나, 루프만 형성되어 있을 때에는 스텐트를 제거할 수 있는 방법 및 진료과가 한정된다는 문제점이 있다.Therefore, when only the pull member is formed on the stent or only the loop is formed, there is a problem in that the method and the department of treatment for removing the stent are limited.
[선행기술문헌] [ Prior art literature ]
[특허문헌] [ Patent Literature ]
(특허문헌 1) 공개특허공보 10-2010-0119068(Patent Document 1) Unexamined Patent Publication 10-2010-0119068
본 발명은 상기 문제점을 해결하기 위한 것으로, 스텐트를 제거하기 위한 당김 부재와 루프를 모두 포함하는 제거 가능한 스텐트를 제공하는 것이다.The present invention is to solve the above problems, and to provide a removable stent including both a pull member and a loop for removing the stent.
본 발명의 과제는 이상에서 언급한 과제로 제한되지 않으며, 언급되지 않는 또 다른 과제는 아래의 기재로부터 통상의 기술자에게 명확하게 이해될 수 있을 것이다.The subject of the present invention is not limited to the above-mentioned subject, and another subject that is not mentioned will be clearly understood by those skilled in the art from the following description.
상기 과제를 해결하기 위해, 본 발명은 제거 가능한 스텐트를 제공한다.In order to solve the above problems, the present invention provides a removable stent.
본 발명은, 와이어들이 서로 교차되어 표면에 복수의 구멍이 형성되고, 중공의 관 (tubular) 형상을 갖는 스텐트 본체, 일측이 스텐트 본체의 단부에 결합되는 하나 이상의 당김 부재, 및 스텐트 본체의 단부에 형성되는 루프를 포함하는 것을 특징으로 한다.In the present invention, the wires are crossed with each other to form a plurality of holes on the surface, the stent body having a hollow tubular shape, one or more pulling members coupled to the end of the stent body, and the end of the stent body It characterized in that it comprises a loop formed.
본 발명은 또한, 당김 부재가 스텐트 본체의 외측 방향으로 형성되고, 스텐트 본체의 외부로부터 삽입된 제거용 도구에 의해 잡아 당겨질 수 있도록 스텐트 본체의 길이 방향으로 연장되어 형성되는 것을 특징으로 한다.In addition, the present invention is characterized in that the pulling member is formed in the outer direction of the stent body, and is formed extending in the longitudinal direction of the stent body so that it can be pulled by a removal tool inserted from the outside of the stent body.
본 발명은 또한, 루프가 스텐트 본체의 단부의 내측 방향으로 형성되고, 루프의 적어도 일부는, 스텐트 본체의 외부로부터 삽입된 제거용 갈고리에 의해 걸어 맞춰질 수 있도록 스텐트 본체의 단부의 와이어들과 간격을 가지도록 형성되는 것을 특징으로 한다.In the present invention, the loop is formed in the inner direction of the end of the stent body, and at least a portion of the loop is spaced between the wires of the end of the stent body so that it can be engaged by a removal hook inserted from the outside of the stent body. It is characterized in that it is formed to have.
본 발명은 또한, 루프는 의료용 실이 상기 스텐트 본체의 단부의 와이어들에 교대로 삽입되어 형성되는 것을 특징으로 한다.The present invention is also characterized in that the loop is formed by alternately inserting a medical thread into the wires at the ends of the stent body.
본 발명은 또한, 제거용 도구는 의료용 내시경 포셉인 것을 특징으로 한다.The present invention is also characterized in that the removal tool is a medical endoscopic forceps.
본 발명은 또한, 스텐트 본체의 단부의 와이어들과 루프의 간격은 적어도 1mm 인 것을 특징으로 한다.The present invention is also characterized in that the distance between the wires and the loop at the end of the stent body is at least 1mm.
본 발명은 또한, 루프가 원형 또는 다각형의 형상을 가지는 것을 특징으로 한다.The present invention is also characterized in that the loop has a circular or polygonal shape.
본 발명은 또한, 스텐트 본체의 외주면 일측을 감싸도록 구비되는 커버부를 더 포함하는 것을 특징으로 한다.The present invention is also characterized in that it further comprises a cover provided to surround one side of the outer peripheral surface of the stent body.
본 발명은 또한, 당김 부재가 루프를 형성하는 의료용 실의 양 단부를 묶어서 형성되는 것을 특징으로 한다.The present invention is also characterized in that the pull member is formed by tying both ends of a medical thread forming a loop.
본 발명의 제거 가능한 스텐트는, 스텐트의 제거 방법 및 내과 및 영상의학과 등의 진료과의 종류에 한정되지 않고 제거 시술이 수행될 수 있는 효과를 가진다.The removable stent of the present invention is not limited to the method of removing the stent and the type of medical departments such as internal medicine and radiology, and has an effect that a removal procedure can be performed.
보다 구체적으로, 본 발명의 제거 가능한 스텐트는 스텐트를 제거하기 위한 당김 부재와 루프를 모두 포함함으로써, 파지 수단을 포함하는 제거 장치를 통해 당김 부재를 잡아 당기는 방법으로 제거될 수도 있고, 갈고리 등을 포함하는 제거 장치를 통해 루프를 걸어 당기는 방법으로 제거될 수도 있다. More specifically, the removable stent of the present invention includes both a pull member and a loop for removing the stent, so that it may be removed by pulling the pull member through a removal device including a gripping means, and includes a hook, etc. It can also be removed by pulling the loop through the removal device.
따라서, 본 발명의 제거 가능한 스텐트는 내시경적 수술을 통해서도 제거될 수 있고, 복강경적 수술을 통해서도 제거될 수 있는 장점을 가진다. Accordingly, the removable stent of the present invention has the advantage of being able to be removed through endoscopic surgery and also through laparoscopic surgery.
따라서, 본 발명의 제거 가능한 스텐트는 제거 방법 및 진료과에 한정되지 않고 제거될 수 있다.Therefore, the removable stent of the present invention can be removed without being limited to the removal method and the clinic.
본 명세서에서 첨부되는 다음의 도면들은 본 발명의 바람직한 실시예를 예시하는 것이며, 발명의 상세한 설명과 함께 본 발명의 기술사상을 더욱 이해시키는 역할을 하는 것이므로, 본 발명은 그러한 도면에 기재된 사항에만 한정되어 해석되어서는 아니 된다. The following drawings appended in the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention, so the present invention is limited to the matters described in such drawings. And should not be interpreted.
도 1 은 본 발명에 따른 당김 부재와 루프를 포함하는 제거 가능한 스텐트의 실시예를 도시한 도면;1 is a view showing an embodiment of a removable stent comprising a pull member and a loop according to the present invention;
도 2 는 본 발명에 따른 당김 부재와 루프를 포함하는 제거 가능한 스텐트의 실시예의 단면을 도시한 도면;2 is a cross-sectional view of an embodiment of a removable stent comprising a pull member and a loop according to the present invention;
도 3 은 본 발명에 따른 당김 부재와 루프를 포함하는 제거 가능한 스텐트의 실시예의 단부를 도시한 도면이다.3 is a view showing the end of an embodiment of a removable stent comprising a pull member and a loop according to the present invention.
도 4 는 본 발명에 따른 당김 부재와 루프를 포함하는 제거 가능한 스텐트의 다른 실시예를 도시한 도면;4 is a view showing another embodiment of a removable stent including a pull member and a loop according to the present invention;
도 5 는 본 발명에 따른 당김 부재와 루프를 포함하는 제거 가능한 스텐트의 다른 실시예의 단면을 도시한 도면이다.5 is a view showing a cross-section of another embodiment of a removable stent including a pull member and a loop according to the present invention.
이하 본 발명의 목적이 구체적으로 실현될 수 있는 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 설명한다. 다만, 첨부된 도면은 본 발명의 내용을 보다 쉽게 개시하기 위하여 설명되는 것일 뿐, 본 발명의 범위가 첨부된 도면의 범위로 한정되는 것은 아님은 이 기술분야의 통상의 지식을 가진 자라면 용이하게 알 수 있을 것이다. Hereinafter, preferred embodiments of the present invention in which the object of the present invention can be specifically realized will be described with reference to the accompanying drawings. However, the accompanying drawings are only described in order to more easily disclose the contents of the present invention, and the scope of the present invention is not limited to the scope of the accompanying drawings, and those of ordinary skill in the art can easily You will know.
도 1 내지 도 5 를 참조하여 보면, 본 발명의 일 실시예에 따른 제거 가능한 스텐트 (10) 는 스텐트 본체 (100), 당김 부재 (110) 및 루프 (120) 를 포함한다.1 to 5, the removable stent 10 according to an embodiment of the present invention includes a stent body 100, a pull member 110, and a loop 120.
스텐트 본체 (100) 는 와이어들이 서로 교차되어 표면에 복수의 구멍이 형성되어 있고, 중공의 관 형상을 가진다. 바람직하게는, 스텐트 본체 (100) 는 커버부 (200) 에 의해 외주면 일측이 커버된다. 또한, 스텐트 본체 (100) 의 외부 표면은 도 1 에 도시된 실시예와 같이 울퉁불퉁할 수도 있고, 도 4 에 도시된 다른 실시예와 같이 매끈할 수 있다. 다만 상기 실시예들의 형태로 한정되지는 않는다.The stent body 100 has a plurality of holes formed on its surface by crossing wires, and has a hollow tubular shape. Preferably, one side of the outer circumferential surface of the stent body 100 is covered by the cover part 200. In addition, the outer surface of the stent body 100 may be uneven as in the embodiment illustrated in FIG. 1, or may be smooth as in the other exemplary embodiment illustrated in FIG. 4. However, it is not limited to the form of the above embodiments.
당김 부재 (110) 는 일측이 스텐트 본체 (100) 의 단부에 결합되어 스텐트 본체 (100) 와 연결된다. 당김 부재 (110) 는 스텐트 본체 (100) 의 외측 방향으로 형성되고, 스텐트 본체 (100) 의 외부로부터 삽입된 제거용 도구에 의해 잡아 당겨질 수 있도록 스텐트 본체 (100) 의 길이 방향으로 연장되어 형성된다. 당김 부재 (110) 의 길이는 한정되지 않으나, 제거용 도구에 의해 잡아 당겨 질 수 있도록 충분히 길게 연장되어 형성된다. One side of the pull member 110 is coupled to the end of the stent body 100 and connected to the stent body 100. The pull member 110 is formed in the outer direction of the stent body 100 and is formed to extend in the longitudinal direction of the stent body 100 so that it can be pulled by a removal tool inserted from the outside of the stent body 100 . The length of the pull member 110 is not limited, but is formed to extend long enough so that it can be pulled by a removal tool.
상기 제거용 도구는 당김 부재 (110) 을 잡아당겨 제거 가능한 스텐트 (10) 를 제거할 수 있는 도구이고, 바람직하게는 의료용 내시경 포셉이다. The removal tool is a tool capable of removing the removable stent 10 by pulling the pull member 110, and is preferably a medical endoscope forceps.
루프 (120) 는 스텐트 본체 (100) 의 단부에 형성된다. 그리고, 루프 (120) 의 적어도 일부는 스텐트 본체 (100) 의 단부의 내측 방향으로 형성되고, 스텐트 본체 (100) 의 외부로부터 삽입된 제거용 갈고리에 의해 걸어 맞춰질 수 있도록 스텐트 본체 (100) 의 단부의 와이어들과 간격을 가지도록 형성된다. 이때, 루프 (120) 의 적어도 일부가 스텐트 본체 (100) 의 단부의 와이어들과 간격을 가지도록 형성된다는 것은, 루프 (120) 의 적어도 일부는 스텐트 본체 (100) 의 단부의 테두리를 형성하는 와이어들에 접하도록 형성되지 않고, 일정 간격을 가지고 떨어져 있도록 형성된다는 것을 의미한다. 상기 간격이 있음으로써, 제거용 갈고리는 상기 간격 사이로 들어가 루프 (120) 에 걸릴 수 있다. The loop 120 is formed at the end of the stent body 100. And, at least a portion of the loop 120 is formed in the inner direction of the end of the stent body 100, the end of the stent body 100 so that it can be engaged by a removal hook inserted from the outside of the stent body 100 It is formed to have a gap with the wires of. At this time, at least a part of the loop 120 is formed to have a gap with the wires at the end of the stent body 100, at least a part of the loop 120 is a wire forming the edge of the end of the stent body 100 It means that it is not formed to be in contact with the field, but is formed to be separated at a certain interval. By having the gap, the hook for removal may enter the gap and be caught in the loop 120.
루프 (120) 의 적어도 일부가 스텐트 본체 (100) 의 단부의 와이어들과 이루는 간격의 크기는 제거용 갈고리가 루프 (120) 에 용이하게 걸릴 수 있도록 설정될 수 있다. 바람직하게는, 상기 간격은 적어도 1mm 이다. The size of the gap between at least a portion of the loop 120 and the wires at the ends of the stent body 100 may be set so that the hook for removal can be easily caught on the loop 120. Preferably, the spacing is at least 1 mm.
바람직하게는, 루프 (120) 는 의료용 실이 스텐트 본체 (100) 의 단부의 와이어들에 교대로 삽입되는 형태로 형성된다.Preferably, the loop 120 is formed in a form in which a medical thread is alternately inserted into the wires at the ends of the stent body 100.
바람직하게는, 당김 부재 (110) 는 루프 (120) 를 형성하는 의료용 실의 양 단부를 묶어서 형성된다. 그러나, 당김 부재 (110) 는 루프 (120) 를 형성하는 의료용 실이 아닌 별도의 의료용 실을 묶어서 형성될 수도 있다. Preferably, the pull member 110 is formed by tying both ends of the medical thread forming the loop 120. However, the pull member 110 may be formed by bundling a separate medical thread other than a medical thread forming the loop 120.
루프 (120) 의 형상은 어떠한 것이어도 상관 없으나, 바람직하게는 원형 또는 다각형의 형상이거나, 더욱 바람직하게는 삼각형의 형상일 수 있다. The shape of the loop 120 may be any, but is preferably a circular or polygonal shape, more preferably a triangular shape.
당김 부재 (120) 와 루프 (120) 의 개수는 한정되지 않으나, 적어도 1 개 이상이다.The number of the pull member 120 and the loop 120 is not limited, but is at least one or more.
당김 부재 (120) 와 루프 (120) 는, 인체의 활동이나 유동에 의해 움직이더라도 자유롭게 움직이며 장기 내에 자극을 주지 않기 위해, 자유롭게 휘어지는 연성재질로 이루어질 수 있다.The pulling member 120 and the loop 120 may be made of a flexible material that freely bends in order to move freely even if it is moved by the activity or flow of the human body and not to irritate the organs.
[부호의 설명] [ Description of sign ]
10 : 제거 가능한 스텐트10: removable stent
100 : 스텐트 본체100: stent body
110 : 당김 부재110: pull member
120 : 루프120: loop
200 : 커버부200: cover part

Claims (9)

  1. 제거 가능한 스텐트 (10) 에 있어서, In the removable stent (10),
    와이어들이 서로 교차되어 표면에 복수의 구멍이 형성되고, 중공의 관 (tubular) 형상을 갖는 스텐트 본체 (100); The wires cross each other to form a plurality of holes on the surface, the stent body 100 having a hollow tubular shape;
    일측이 상기 스텐트 본체 (100) 의 단부에 결합되는 하나 이상의 당김 부재 (110) ; 및 One or more pulling members 110 coupled to the end of the stent body 100; And
    상기 스텐트 본체 (100) 의 단부에 형성되는 루프 (120); A loop 120 formed at the end of the stent body 100;
    를 포함하는, 제거 가능한 스텐트 (10).Containing, removable stent (10).
  2. 제 1 항에 있어서, The method of claim 1,
    상기 당김 부재 (110) 는, 상기 스텐트 본체 (100) 의 외측 방향으로 형성되고, The pull member 110 is formed in the outer direction of the stent body 100,
    상기 스텐트 본체 (100) 의 외부로부터 삽입된 제거용 도구에 의해 잡아 당겨질 수 있도록 상기 스텐트 본체 (100) 의 길이 방향으로 연장되어 형성되는, 제거 가능한 스텐트 (10).A removable stent (10) formed extending in the longitudinal direction of the stent body (100) so that it can be pulled by a removal tool inserted from the outside of the stent body (100).
  3. 제 1 항에 있어서,The method of claim 1,
    상기 루프 (120) 는, 상기 스텐트 본체 (100) 의 단부의 내측 방향으로 형성되고,The loop 120 is formed in the inner direction of the end of the stent body 100,
    상기 루프 (120) 의 적어도 일부는, 상기 스텐트 본체 (100) 의 외부로부터 삽입된 제거용 갈고리에 의해 걸어 맞춰질 수 있도록 상기 스텐트 본체 (100) 의 상기 단부의 와이어들과 간격을 가지도록 형성되는, 제거 가능한 스텐트 (10).At least a portion of the loop 120 is formed to have a gap with the wires of the end of the stent body 100 so that it can be engaged by a removal hook inserted from the outside of the stent body 100, Removable stent (10).
  4. 제 1 항에 있어서,The method of claim 1,
    상기 루프 (120) 는, 의료용 실이 상기 스텐트 본체 (100) 의 단부의 와이어들에 교대로 삽입되어 형성되는, 제거 가능한 스텐트 (10).The loop 120 is formed by alternately inserting a medical thread into the wires of the ends of the stent body 100, the removable stent (10).
  5. 제 2 항에 있어서, The method of claim 2,
    상기 제거용 도구는 의료용 내시경 포셉인, 제거 가능한 스텐트 (10).The removal tool is a medical endoscopic forceps, removable stent (10).
  6. 제 3 항에 있어서, The method of claim 3,
    상기 간격은 적어도 1 mm 인, 제거 가능한 스텐트 (10).The spacing is at least 1 mm, the removable stent (10).
  7. 제 3 항에 있어서,The method of claim 3,
    상기 루프 (120) 는 원형 또는 다각형의 형상을 가지는, 제거 가능한 스텐트 (10).The loop 120 has a circular or polygonal shape, removable stent (10).
  8. 제 1 항에 있어서, The method of claim 1,
    상기 스텐트 본체 (100) 의 외주면 일측을 감싸도록 구비되는 커버부 (200) 를 더 포함하는, 제거 가능한 스텐트 (10).A removable stent (10) further comprising a cover portion (200) provided to surround one side of the outer peripheral surface of the stent body (100).
  9. 제 4 항에 있어서,The method of claim 4,
    상기 당김 부재 (110) 는 상기 루프 (120) 를 형성하는 상기 의료용 실의 양 단부를 묶어서 형성되는, 제거 가능한 스텐트 (10).The pulling member 110 is formed by tying both ends of the medical thread forming the loop 120, the removable stent (10).
PCT/KR2019/010381 2019-04-29 2019-08-14 Removable stent including loop and pulling member for removing stent WO2020222364A1 (en)

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JP2014223299A (en) * 2013-05-15 2014-12-04 株式会社スタンダードサイテックＳｔａｎｄａｒｄ Ｓｃｉ−Ｔｅｃｈ Ｉｎｃ． Medical stent with movement prevention means
KR101846769B1 (en) * 2014-04-08 2018-04-06 보스톤 싸이엔티픽 싸이메드 인코포레이티드 Partially coated stents

Cited By (3)

* Cited by examiner, † Cited by third party
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WO2023277266A1 (en) * 2021-07-01 2023-01-05 (재)예수병원유지재단 Stent rim cover capture instrument
KR20230005515A (en) * 2021-07-01 2023-01-10 (재)예수병원유지재단 Capture device for stent limb cover
KR102543906B1 (en) 2021-07-01 2023-06-16 (재)예수병원유지재단 Capture device for stent limb cover

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