Abstract:
The present invention pertains to structures and fabricated articles having shape/reshape behavior (and processes for their preparation) comprising; (A) from about 1 to 100 wt % (based on the combined weights of Components A and B) of at least one substantially random interpolymer having an I2 of 0.1 to about 1,000 g/10 min and an Mw/Mn of from about 1.5 to about 20, which comprises; (1) from about 38 to about 65 mol % of polymer units derived from; (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one aromatic vinyl or vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) from about 35 to about 62 mol % of polymer units derived from ethylene and/or at least one C3-20 alpha -olefin; and (B) from 0 to about 99 wt % (based on the combined weights of Components A and B) of at least one polymer other than that of Component A; and (C) from 0 to about 50 % by weight (based on the combined weights of components A, B, C and D) of at least one tackifier; and (D) from 0 to about 80% by weight (based on the combined weights of components A, B, C and D) of at least one filler.
Abstract:
The present invention pertains to structures and fabricated articles having shape/reshape behavior (and processes for their preparation) comprising; (A) from about 1 to 100 wt % (based on the combined weights of Components A and B) of at least one substantially random interpolymer having an I2 of 0.1 to about 1,000 g/10 min and an Mw/Mn of from about 1.5 to about 20, which comprises; (1) from about 38 to about 65 mol % of polymer units derived from; (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one aromatic vinyl or vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) from about 35 to about 62 mol % of polymer units derived from ethylene and/or at least one C3-20 alpha -olefin; and (B) from 0 to about 99 wt % (based on the combined weights of Components A and B) of at least one polymer other than that of Component A; and (C) from 0 to about 50 % by weight (based on the combined weights of components A, B, C and D) of at least one tackifier; and (D) from 0 to about 80% by weight (based on the combined weights of components A, B, C and D) of at least one filler.
Abstract:
본 발명은 형상기억합금 와이어를 이용한 스텐트의 제조방법과 이에 의해 제조한 스텐트 및 이를 제조하기 위한 지그의 구조에 관한 것으로서, 병변부위에 대하여 원주방향을 따라 두개의 충분한 저항력을 가지면서도 원주방향에 위치하는 고리 또는 교차부분을 최소화하여 본 발명의 스텐트를 삽입장치에 삽입할 때 이를 삽입하는 튜브의 직경을 최소화 할 수 있도록 하여 직경이 작은 내강에서도 용이하게 시술할 수 있도록 하기 위함에 있다. 이를 위하여 첫번째 와이어로 최상부와 최하부에 위치하는 다수개의 만곡부와 그 사이에 단면 다이아몬드형의 공간부를 갖도록 첫번째 스텐트를 구성하고, 상기한 첫번째 와이어에 의하여 제조되는 첫번째 스텐트와 서로 분리가 되지 않도록 두번째 와이어로 첫번째 와이어의 상단 또는 하단을 지나면서 최상부와 최하부에 위치하는 다수개의 만곡부와 그 사이에 단면 다이아몬드형의 공간부를 갖도록 두번째 스텐트를 구성하여, 상기 첫번째 스텐트와 두번째 스텐트가 서로 별개이면서도 결합상태를 유지할 수 있데 하였다. 내강 확장기구, 스텐트, 병변부위 확장, 확장 스텐트, 내강 확장.
Abstract:
PURPOSE: A manufacturing method of a stent, a stent manufactured thereby, and a structure of a jig for manufacturing the same are provided to minimize the diameter of a tube used for insertion of the stent. CONSTITUTION: A manufacturing method of a stent comprises: a step of manufacturing a first stent(101) by forming a plurality of bent loop parts and forming space parts(70) of a diamond shape in columnar direction and longitudinal direction; a step of manufacturing a second stent by forming a plurality of bent loop parts and forming space parts of a diamond shape in columnar direction and longitudinal direction; and a step of maintaining the combination state of the first stent and second stent.