VASCULAR STENT

• Main Authors: CHO, JAE HWA, JIN, GYU HYUN, PARK, DAE SUNG, SEO, JUN HYUL, BAE, IN HO, RYU, HYUN SEUNG, JEONG, MYUNG HO, PARK, JUN KYU, KIM, HAN KI, SONG, SEOK BEOM, LIM, KYUNG SEOB
• Format: Patent
• Language: English; Korean
• Published: 19.02.2016
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; TREATMENT OR PROTECTION OF EYES OR EARS

The present invention relates to a stent for blood vessel dilation. A stent for blood vessel dilation of the present invention includes: a first body part which is formed by connecting plural columns consisting of a plurality of cells connected to each other, and which has a hollow cylindrical shape; a second body part which is formed by connecting plural columns consisting of a plurality of cells connected to each other, and which is formed on one end of the first body part; and a third body part which is formed by connecting plural columns consisting of a plurality of cells connected to each other, and which is formed on the other end of the first body part. The second and third body parts have larger numbers of cells per unit column than that of the first body part. When the stent for blood vessel dilation is extended by a balloon in the stent for blood vessel dilation, a diameter of the stent for blood vessel dilation is sequentially extended toward a direction of both ends of the second and third body parts from the center of the first body part. The purpose of the present invention is to provide a technology which is capable of minimizing tissue damage that may be generated during stent extension by installing the stent in an inner cavity of the human body which has been narrowed according to the progress of stenosis, such that both ends of the stent are not excessively extended in the process of extending the stent by a balloon. A stent for blood vessel dilation according to the present invention is capable of preventing excessive extensions of the stent that may be generated in the second and third body parts by forming the first body part, a second body part, and a third body part such that numbers of cells per unit columns forming the second and third body parts are larger than the number of cells per unit column forming the first body part, thereby extending the first body part located in the center in advance when extending the stent by a balloon. 본 발명은 혈관확장용 스텐트에 관한 것으로, 서로 연결되는 다수의 셀(Cell)로 이루어진 복수의 열이 연결되어 형성되며, 중공의 원통형상을 갖는 제1 몸체부; 서로 연결되는 다수의 셀(Cell)로 이루어진 복수의 열이 연결되어 형성되며, 상기 제1 몸체부의 일단에 형성되는 제2 몸체부; 및 서로 연결되는 다수의 셀(Cell)로 이루어진 복수의 열이 연결되어 형성되며, 상기 제1 몸체부의 타단에 형성되는 제3 몸체부;를 포함하고, 상기 제2 몸체부 및 제3 몸체부는 상기 제1 몸체부에 비해 단위 열 당 셀의 개수가 많도록 형성되는 것을 특징으로 한다. 여기서, 상기 혈관확장용 스텐트의 내부에서 풍선에 의해 상기 혈관확장용 스텐트가 확장될 경우, 상기 혈관확장용 스텐트는 상기 제1 몸체부의 중앙에서부터 제2 몸체부 및 제3 몸체부의 양 단부 방향을 향해 순차적으로 직경이 확장된다. 이를 통해 혈관확장용 스텐트는 제1 몸체부를 이루는 단위 열당 셀의 개수 보다 제2 몸체부 및 제3 몸체부를 이루는 단위 열당 셀의 개수가 더 많도록 형성되어, 풍선에 의한 확장 시, 중앙에 위치한 제1 몸체부가 먼저 확장됨으로써 제2 몸체부 및 제3 몸체부에서 발생할 수 있는 과도한 확장을 막을 수 있다.