Abstract: The present disclosure provides a covered stent. The covered stent has a hollow tubular structure provided with openings at two ends, and includes a main body stent, a window being arranged in a surface of the main body stent. The covered stent further includes an internal covering film; an edge of the internal covering film is connected to the main body stent, and a through hole communicating with an inner cavity of the covered stent is also formed in the internal covering film. The covered stent further includes a window supporting member, the window supporting member being arranged outside the internal covering film and protruding outwardly from a surface of the internal covering film.

Abstract: A covered stent (10), comprising a main body stent (11), a window (13) being formed on a surface of the main body stent (11). The covered stent (10) further includes an internal covering film (14). An edge of the internal covering film (14) is connected to the main body stent (11). The internal covering film (14) includes a bottom portion (141), a proximal end folding portion and a distal end folding portion, and the proximal and distal end folding portions are disposed at two ends of the bottom portion (141), respectively. At least one of the proximal end folding portion and the distal end folding portion is disposed on an inner surface of the main body stent (11), and is recessed toward an inner cavity of the main body stent (11) to form a receiving cavity, and a through hole (147) that communicates with the inner cavity of the main body stent (11) is also formed on the internal covering film (14).

Abstract: An implantation method of a stent system, and the implantation method including implanting a main stent; introducing a catcher; introducing a long sheath and a guiding catheter along a preset guide wire, so as to make the distal end of the long sheath and the distal end of the guiding catheter extend out from the distal end of the inner branch; the distal end of the long sheath and the distal end of the guiding catheter to respectively enter a target branch blood vessel; withdrawing the guiding catheter, and introducing a branch stent delivery along the long sheath to complete the implantation of the branch stent. The method greatly shortens the implantation time of the stent system by simplifying the path of the preset guide wire in the implantation process and fully utilizing the characteristics of the preset guide wire with double soft heads.

Abstract: An implantation method of a stent system, and the implantation method including implanting a main stent; introducing a catcher; introducing a long sheath and a guiding catheter along a preset guide wire, so as to make the distal end of the long sheath and the distal end of the guiding catheter extend out from the distal end of the inner branch; the distal end of the long sheath and the distal end of the guiding catheter to respectively enter a target branch blood vessel; withdrawing the guiding catheter, and introducing a branch stent delivery along the long sheath to complete the implantation of the branch stent. The method greatly shortens the implantation time of the stent system by simplifying the path of the preset guide wire in the implantation process and fully utilizing the characteristics of the preset guide wire with double soft heads.