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KR930005568Y1 - Medical devices with radial expansion - Google Patents

Medical devices with radial expansion Download PDF

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Publication number
KR930005568Y1
KR930005568Y1 KR2019910005271U KR910005271U KR930005568Y1 KR 930005568 Y1 KR930005568 Y1 KR 930005568Y1 KR 2019910005271 U KR2019910005271 U KR 2019910005271U KR 910005271 U KR910005271 U KR 910005271U KR 930005568 Y1 KR930005568 Y1 KR 930005568Y1
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South Korea
Prior art keywords
stent
main body
medical device
esophagus
radial expansion
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Expired - Fee Related
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KR2019910005271U
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Korean (ko)
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KR920019197U (en
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송호영
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송호영
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Priority to KR2019910005271U priority Critical patent/KR930005568Y1/en
Application filed by 송호영 filed Critical 송호영
Priority to US07/861,785 priority patent/US5330500A/en
Priority to PCT/KR1991/000023 priority patent/WO1992006734A1/en
Priority to JP1992600005U priority patent/JPH0717314Y2/en
Priority to AU88503/91A priority patent/AU8850391A/en
Priority to EP91918408A priority patent/EP0506918B1/en
Priority to DE69116130T priority patent/DE69116130T2/en
Publication of KR920019197U publication Critical patent/KR920019197U/en
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Publication of KR930005568Y1 publication Critical patent/KR930005568Y1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A61M25/04—Holding devices, e.g. on the body in the body, e.g. expansible
    • 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
    • A61F2/0077—Special surfaces of prostheses, e.g. for improving ingrowth
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes

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

Abstract

내용 없음.No content.

Description

방사방향의 확장력을 갖는 의료용구Medical devices with radial expansion

제1도는 본 고안의 의료용구 사시도.1 is a perspective view of the medical device of the present invention.

제2도는 본 고안의 의료용구가 식도내에 위치한 상태를 나타내는 도면이다.2 is a view showing a state in which the medical equipment of the present invention is located in the esophagus.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 본체 2, 3 : 걸림부1: main body 2, 3: locking part

4 : 직선부 5 : 밴딩부4 straight part 5 bending part

9 : 망사체9: mesh

본 고안은 의료용구에 관한 것으로서, 보다 상세하게는 식도암이나 식도전이 등으로 인하여 식도가 협착현상을 일으킬 때 식도내에 위치시켜 방사방향의 확장력을 갖도록 하는 의료용구에 관한 것이다.The present invention relates to a medical device, and more particularly, to a medical device to be located in the esophagus when the esophagus causes stenosis due to esophageal cancer or esophageal metastasis, to have a radial expansion force.

특히 본 고안의 의료용구는 식도내에 위치한 스텐트의 위치를 교정할 때 식도벽을 손상시키지 않고 교정할 수 있는 특징을 갖는다.In particular, the medical device of the present invention has a feature that can be corrected without damaging the esophageal wall when correcting the position of the stent located in the esophagus.

여러경우에 수축된 통로를 팽창시키거나 개방된 통로를 개방상태로 유지시킬 수 있는 수단이 요구된다.In many cases, a means is needed to expand the contracted passageway or to keep the open passageway open.

그러한 상황은 식도암으로 인하여 식도가 협착현상을 일으키거나, 동맥경화증에 의해 혈액의 순환이 제한을 받거나, 비뇨기계통의 이상등을 예로 들 수 있다.Such situations include, for example, esophageal cancer causing narrowing of the esophagus, limited circulation of blood due to atherosclerosis, or abnormalities of the urinary system.

이러한 경우에 통로를 확장시켜 그 상태를 유지시켜 주는 풍선 확장술이 제안되어 있는데, 이 풍선 확장술은 식도의 파열이라는 위험을 내재하고 있을 뿐만 아니라 식도가 파열되면 조영제를 사용하여 식도촬용을 해야 하므로 조영제의 세균감염에 따른 종격동염을 유발시키는 또다른 문제점을 갖고 있다.In this case, a balloon dilatation technique is proposed to expand the passage and maintain the condition. The balloon dilation does not only involve the risk of rupture of the esophagus, but also requires contrast imaging to use the esophagus when the esophagus ruptures. There is another problem that causes mediastinitis due to bacterial infection.

풍선 확장술의 문제점을 해소하기 위하여 안출된 스텐트라 불리우는 의료용구는 지그재그 구조의 와이어를 원통형으로 하고 상하로 소정의 길이만큼 연장하여 자체적으로 탄성력을 갖는 형태의 구조를 취하고 있다.In order to solve the problem of balloon dilation, a medical device called a stent has a structure in which a wire having a zigzag structure has a cylindrical shape and extends up and down by a predetermined length to have an elastic force itself.

그러나 이러한 스텐트는 확장술을 요하는 소정의 위치에 삽입되었을 때 금속면이 환부와 직접 접촉하기 때문에 환자로 하여금 통증을 느끼게 하고 있으며, 삽입 상태가 스텐트의 확장력에 의해서만 유지되므로 장기간 사용시 스텐트가 유동하여 정위치를 이탈하는 문제점을 갖고 있다.However, when the stent is inserted into a predetermined position requiring dilation, the metal surface is in direct contact with the affected part, causing the patient to feel pain. Since the insertion state is maintained only by the expansion force of the stent, the stent flows and is fixed. There is a problem of leaving the location.

상기한 바와같은 문제점을 해소하기 위하여 본 출원인은 대한민국 실용신안등록 출원 제90-15860호를 제안한바 있다.In order to solve the above problems, the applicant has proposed the Republic of Korea Utility Model Registration Application No. 90-15860.

이 방안에 의하면 와이어를 지그재그 형태로 밴딩하여 직선부와 밴딩부를 형성함과 아울러 양 끝단을 부착하여 무한 연속상태의 본체를 구성하고, 상기한 본체를 다수개 배치하되, 밴딩부가 맞닿는 상태로 하여 직선부에 의해 공간부가 형성되도록 하며, 상기한 밴딩부에 고리를 형성하여 밴드로 결속함으로서 원주방향의 확장력을 제한토록 하고, 상기한 본체의 외측에 나이론사로된 망사체를 씌워 이루어지는 구조의 의료용구를 제안하고 있다.According to this method, the wire is bent in a zigzag form to form a straight portion and a bending portion, and both ends are attached to form an infinitely continuous main body, and a plurality of the main bodies are disposed, but the bending portion is in contact with the straight line. The space portion is formed by the part, and the band is formed in the banding part to bind the band to limit the expansion force in the circumferential direction, and the medical device having a structure made of a mesh body made of nylon yarn on the outer side of the body. I'm proposing.

또한 상기한 본체의 중앙에 유동방지부재를 제공하여 스텐트의 이동을 방지토록 하고 있다.In addition, by providing a flow preventing member in the center of the main body to prevent the movement of the stent.

그러나 이러한 구조는 스텐트의 유동을 방지하는 효과는 기대할 수 있는데 반하여, 이 유동방지부재의 끝단이 외측으로 돌출된 형태를 취하고 있기 때문에 스텐트의 위치를 바로잡기 위하여 인위적으로 스텐트를 이동시킬 때 식도벽을 손상시킬 수 있다는 것이 단점으로 지적되고 있다.However, this structure can be expected to prevent the flow of the stent, while the end of the flow preventing member is protruding outwardly damaged the esophageal wall when moving the stent artificially to correct the position of the stent It can be done as a disadvantage.

본 고안은 상기한 바와 같은 문제점을 해소하기 위하여 안출된 것으로서, 본 고안의 목적은 스텐트의 위치를 교정할 때 식도내벽에 어떠한 손상도 주지 않고 교정할 수 있는 의료용구를 제공하는 데 있다.The present invention is devised to solve the problems as described above, the object of the present invention is to provide a medical device that can be corrected without any damage to the esophageal wall when correcting the position of the stent.

또한 본 고안은 스텐트의 이동을 적극 규제함과 아울러 생체에 해가 적은 의료용구를 제공한다.In addition, the present invention actively regulates the movement of the stent and provides a medical device that is less harmful to the living body.

이를 실현하기 위하여 본 고안은, 지그재그 형태로 밴딩되어 직선부 및 밴딩부를 갖는 와이어의 양 끝단이 원통상으로 부착됨에 의해 방사방향의 탄성력을 갖는 스텐트가 연결부재에 의해 다수개 연장형성되는 본체와, 상기한 본체보다 큰 직경의 스텐트가 절곡부를 갖는 연결부재에 의해 본체의 양측단에 위치되는 걸림부와로 이루어지는 의료용구를 제공하고 있다.In order to realize this, the present invention, the main body is bent in a zigzag form, the both ends of the wire having a straight portion and the bending portion is attached to the cylindrical shape and the stent having a plurality of radial elastic force extending by the connecting member, Provided is a medical device comprising a locking portion positioned at both ends of the main body by a connecting member having a bent portion having a diameter larger than that of the main body.

상기한 본체 및 걸림부를 이루는 와이어는 금(Gold)으로 코팅되어 인체에 유해성분의 영향을 억제하고 있으며, 또 이들 본체와 걸림부는 외관이 나이론사의 망사체로 씌워짐과 아울러 실리콘으로 코팅되어 암세포가 스텐트내로 침투하는 것을 억제토록 하고 있다.The wire constituting the main body and the catching part is coated with gold to suppress the influence of harmful components on the human body, and the main body and the catching part are covered with nylon mesh, and coated with silicon and the cancer cells are stent. It is to suppress the penetration into the inside.

이하 본 고안의 바람직한 실시예를 첨부한 도면에 따라 더욱 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

제1도는 본 고안이 제공하는 스텐트들이 다수개 연결되어 팽창한 상태로 있는 것을 도시하고 있다.Figure 1 shows that a plurality of stents provided by the present invention is connected and in an expanded state.

본 고안의 실시예에 의하면 크게 본체(1)와, 이 본체(1)의 양측단에 위치하는 걸림부(2)(3)로 이루어져 있다.According to an embodiment of the present invention, it consists of a main body 1 and a locking part 2 and 3 located at both ends of the main body 1.

상기한 본체(1)는 무한 연속의 구조를 취하기 위하여 직선부(4)와 밴딩부(5)를 갖는 지그재그 형태로 형성되어 양측단이 용접에 의해 연결되어 있다.The main body 1 is formed in a zigzag shape having a straight portion 4 and a bending portion 5 so as to take an infinitely continuous structure, and both ends thereof are connected by welding.

스텐트의 양 끝단은 용접으로 연결하는 것에 한정하는 것은 아니고 슬리이브등으로 연결할 수도 있다.Both ends of the stent are not limited to welding, but may be connected by sleeve or the like.

중요한 것은 어떠한 수단에 의해 연결되어도 그것이 대략 원형이나 원통형상을 이르며 방사방향의 확장력을 갖도록 하는 것이다.It is important to ensure that, by any means, it is approximately circular or cylindrical in shape and has radial expansion forces.

이 확장력은 밴딩부(5)로부터 신장되는 직선부(4)의 벌림각도에 의해 실현되는 것이다.This expansion force is realized by the opening angle of the straight portion 4 extending from the bending portion 5.

따라서 와이어는 굽힘력에 대하여 탄성력을 갖을 수 있는 스텐레스 스틸계통의 재질을 선택하는 것이 바람직하다.Therefore, it is preferable to select a material of a stainless steel system that can have elasticity with respect to the bending force.

상기한 본체(1)를 이루는 다수개의 스텐트는 연결부재(6)에 의해 긴 원통상을 이루는 단일체로 형성되고 있다.The plurality of stents constituting the main body 1 is formed as a unitary body having a long cylindrical shape by the connecting member 6.

본체(1)의 상하에는 걸림부(2)(3)가 제공되고 있는데, 이 걸림부(2)(3)는 본체(1)와 동일한 형태의 구조를 취하고 있지만 직경이 본체(1)보다 크게 형성된다는 것이 중요한 사실이다.Locking portions 2 and 3 are provided on the upper and lower sides of the main body 1, which have the same structure as the main body 1, but have a larger diameter than the main body 1. It is important to form.

직경이 다른 본체(1)와 걸림부(2)(3)를 서로 연결하는 수단은 본체(1)에 제공되고 있는 연결부재(6)를 외측으로 절곡하는 것으로 실현가능함을 알 수 있다.It can be seen that the means for connecting the main body 1 and the locking parts 2 and 3 having different diameters to each other can be realized by bending the connecting member 6 provided on the main body 1 to the outside.

절곡되어 형성되는 절곡부(7)의 길이는 걸림부(2)(3)의 직경에 영향을 미치게 되므로 적절한 선택이 중요하다.Since the length of the bent portion 7 that is bent and formed affects the diameter of the catching portions 2 and 3, proper selection is important.

절곡부(7)로부터 계속 신장되는 연장부(8)는 걸림부(2)(3)의 스텐트와 용접되고 있다.The extended portion 8 that continues to extend from the bent portion 7 is welded to the stents of the locking portions 2 and 3.

지금까지의 실시예는 전체 형상이 마치 " I " 자 형상으로 된 의료용구를 설명하고 있으나, 이에 한정하는 것은 아니고 본체(1)와 걸림부(2)(3)의 연결부위를 라운딩하여 실패형상을 취하는 것도 생각할 수 있다.The embodiment thus far describes a medical device having an overall shape of an "I" shape, but is not limited thereto, and a failure shape is obtained by rounding a connection portion between the main body 1 and the engaging portion 2 and 3. I can also think of taking.

한편 상기한 의료용구의 외측은 나이론사의 망사체(9)로 씌워져 피복됨으로서 암세포가 스텐트내로 침투하는 것을 방지하고 있으며, 이 망사체(9)에는 실리콘이 코팅되어 그 기능을 더욱 향상시키도록 되어 있다.On the other hand, the outer side of the medical device is covered with a nylon mesh 9 to prevent cancer cells from penetrating into the stent, and the mesh 9 is coated with silicone to further improve its function. .

이와 같이 구성되는 본 고안의 스텐트는 제1도에 도시한 바와같이 외력이 가하여지지 않는한 팽창된 상태를 유지하고 있는데, 이것을 식도내에 위치시키기 위해서는 소정의 관로내에 압축상태로 밀어넣고 협착된 식도내로 풍선을 넣어 부풀린 다음, 풍선을 빼내고 관로내의 스텐트를 밀대등을 사용하여 식도내로 밀어 넣게 되면 압축되었던 스텐트가 관로내에서 빠져나와 원래의 상태로 팽창하게 된다.The stent of the present invention, which is constructed as described above, is maintained in an expanded state unless external force is applied as shown in FIG. 1, and in order to be located in the esophagus, the stent is pushed into a predetermined conduit in a compressed passage and into the constricted esophagus. When the balloon is inflated, the balloon is removed and the stent in the conduit is pushed into the esophagus using a push rod. The compressed stent is released from the conduit and expands to its original state.

제2도는 이와 같은 상태의 측단면도로서, 식도(S)내에 위치한 스텐트는 방사방향으로 확장되면서 암세포가 성장된 부위에 밀착되어 있음을 보여주고 있다.Figure 2 is a side cross-sectional view of this state, showing that the stent located in the esophagus (S) is in close contact with the growth of cancer cells while expanding radially.

즉 스텐트의 본체(1)부위는 암세포에 밀착되어 더 이상 암세포가 식도(S)내로 성장하는 것을 방지하고 있으며, 걸림부(2)(3)는 암세포의 위아래단부에 걸려 스텐트가 유동하는 것을 방지하고 있다.In other words, the main body (1) of the stent is in close contact with the cancer cells to prevent cancer cells from growing further into the esophagus (S), the locking portion (2) (3) is caught in the upper and lower ends of the cancer cells to prevent the stent from flowing Doing.

이와 같이 위치된 스텐트는 소정의 기간이 경과하게 되면 식도내의 내피증식으로 감싸여지게 된다.The stent positioned as described above is wrapped with endothelial proliferation in the esophagus when a predetermined period elapses.

이상은 식도암 환자에게 사용할 수 있는 스텐트에 대해서 기술하고 있으나, 스텐트의 형상을 직경이 8mm-10mm정도로 되는 원통상으로 하고 스텐트의 직선부 간격을 좁게하게 되면 간암 환자에 사용할 수 있다.The above has described stents that can be used in patients with esophageal cancer. However, when the stent has a cylindrical shape having a diameter of about 8 mm to 10 mm and a narrow space between straight portions of the stent is used, it can be used for liver cancer patients.

이 경우 직선부의 간격이 좁기 때문에 암세포의 침투속도를 느리게 할 수 있으며, 스텐트가 팽창한 후에는 내경이 크기 때문에 담즙배석이 원활하게 되어 보다 큰 효과를 얻을 수 있다.In this case, since the gap between the straight portions is narrow, the penetration rate of the cancer cells can be slowed down, and since the inner diameter is large after the stent is expanded, the bile is smoothly obtained to obtain a greater effect.

상기한 어느 스텐트나 와이어를 금으로 코팅하기 때문에 생체에 해가 적으며, 또 혈관내막이 신속히 감싸여지고, 두텁지 않기 때문에 혈전증이 적게되는 이점도 있다.Since any of the stents and wires described above are coated with gold, they are less harmful to the living body, and the endovascular membrane is rapidly wrapped and is not thick.

Claims (2)

소정의 각도를 굽혀진 밴딩부(5)와 이 밴딩부(5)부로부터 연장되는 직선부(4)를 포함하는 지그재그 형태의 와이어 양끝단이 상호 연결되어 무한연속 형태를 취하는 본체(1)와, 상기한 본체(1)의 직경보다 큰 직경을 갖는 걸림부(2)와 스텐트를 구성하고, 그 외측에 나일론사의 망사체(9)를 씌워 구성함을 특징으로 하는 방사방향의 확장력을 갖는 의료용구.A main body 1 having a zigzag-shaped wire end including a bending portion 5 bent at a predetermined angle and a straight portion 4 extending from the bending portion 5 to form an endless continuous form. Medical device having a radial expansion force, characterized in that the engaging portion 2 having a diameter larger than the diameter of the main body 1 and the stent, and the mesh body 9 of the nylon yarn is covered on the outside thereof tool. 제1항에 있어서, 본체(1)와 걸림부(2)(3)의 와이어는 금으로 코팅됨을 특징으로 하는 방사방향의 확장력을 갖는 의료용구.The medical device having radial expanding force according to claim 1, wherein the wires of the main body (1) and the catching part (2) (3) are coated with gold.
KR2019910005271U 1990-10-18 1991-04-17 Medical devices with radial expansion Expired - Fee Related KR930005568Y1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
KR2019910005271U KR930005568Y1 (en) 1991-04-17 1991-04-17 Medical devices with radial expansion
PCT/KR1991/000023 WO1992006734A1 (en) 1990-10-18 1991-10-17 Self-expanding endovascular stent
JP1992600005U JPH0717314Y2 (en) 1990-10-18 1991-10-17 Self-expanding intravascular stent
AU88503/91A AU8850391A (en) 1990-10-18 1991-10-17 Self-expanding endovascular stent
US07/861,785 US5330500A (en) 1990-10-18 1991-10-17 Self-expanding endovascular stent with silicone coating
EP91918408A EP0506918B1 (en) 1990-10-18 1991-10-17 Self-expanding endovascular stent
DE69116130T DE69116130T2 (en) 1990-10-18 1991-10-17 SELF-EXPANDING, ENDOVASCULAR DILATATOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019910005271U KR930005568Y1 (en) 1991-04-17 1991-04-17 Medical devices with radial expansion

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KR920019197U KR920019197U (en) 1992-11-16
KR930005568Y1 true KR930005568Y1 (en) 1993-08-23

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