Abstract: An indwelling device 1 is provided with: a sheath 20 that is capable of housing a stent graft 10; and a long shaft 30 that is configured to be capable of advancing or retreating inside the sheath along the axial direction. The shaft has a fixing tool 34 and a hollow tube 35 that are respectively engaged with a connection part 14 and a blood vessel wall fixing part 15 of the stent graft to restrict movement of an opening end 11a of the stent graft in the radial direction. The indwelling device is configured to be capable of releasing engagement between the connection part and the fixing tool and engagement between the blood vessel wall fixing part and the hollow tube independently of each other by displacing the shaft with respect to the stent graft in the axial direction.

Abstract: The present invention eliminates the need for highly accurate alignment with a branched tubular tissue when implanting a stent graft. A stent graft 30 comprises: a framework section 31; and a tubular graft section 40. A side surface opening 42 that passes through to the lumen of the graft section is provided in one section of a tube wall 41 of the graft section. In the framework section, among the six frame bodies, the frame bodies 34, 35 that are provided facing the side surface opening section have a first frame body structure section Q that is present in the tube wall along the entire circumference, and a second frame body structure section P that is present in the tube wall in a partial region 41A, which excludes the side surface opening section in the circumferential direction of the tube wall.

Abstract: An indwelling device 1 is provided with: a sheath 20 that is capable of housing a stent graft 10; and a long shaft 30 that is configured to be capable of advancing or retreating inside the sheath along the axial direction. The shaft has a fixing tool 34 and a hollow tube 35 that are respectively engaged with a connection part 14 and a blood vessel wall fixing part 15 of the stent graft to restrict movement of an opening end 11a of the stent graft in the radial direction. The indwelling device is configured to be capable of releasing engagement between the connection part and the fixing tool and engagement between the blood vessel wall fixing part and the hollow tube independently of each other by displacing the shaft with respect to the stent graft in the axial direction.

Abstract: Provided is an intravascular placement tool and an intravascular placement system that, when connecting and using multiple intravascular placement tools, enable smooth transport of an intravascular placement tool that is placed later. An intravascular placement tool (stent graft 1) is placed in a first blood vessel (main blood vessel V1) where a second blood vessel (branched blood vessel V2) branches. The intravascular placement tool (1) includes: a tubular placement tool body (graft body 10); and a branching portion (20) that is protrudingly provided on the placement tool body (10) and that can be connected with another intravascular placement tool (second stent graft 2) placed in the second blood vessel (V2). The relative arrangement between the placement tool body (10) and the branching portion (20) is defined on the basis of the relative positional relationship between the first blood vessel (V1) and the second blood vessel (V2).

Abstract: The purpose of the present invention is to properly accommodate an expandable structure inside a sheath. This retrieval mechanism is designed to retrieve an expandable member (1) from within a blood vessel (V). The retrieval mechanism is provided with a sheath tube (4) and a retrieval member (3) for retrieving the expandable member into the sheath tube. The retrieval member has a retrieval assistance part (32) for assisting in retrieving the expandable member into the sheath tube. The retrieval assistance part can be accommodated in the sheath tube so as to cover the base part of the expandable member.

Abstract: The present invention eliminates the need for highly accurate alignment with a branched tubular tissue when implanting a stent graft. A stent graft 30 comprises: a framework section 31; and a tubular graft section 40. A side surface opening 42 that passes through to the lumen of the graft section is provided in one section of a tube wall 41 of the graft section. In the framework section, among the six frame bodies, the frame bodies 34, 35 that are provided facing the side surface opening section have a first frame body structure section Q that is present in the tube wall along the entire circumference, and a second frame body structure section P that is present in the tube wall in a partial region 41A, which excludes the side surface opening section in the circumferential direction of the tube wall.

Abstract: A tubular implanted appliance (103) is provided with a framework part (2) and a tubular coating film part (1) forming a partition wall, the tubular implanted appliance (10 3) being configured so as to be able to expand and retract in the axial direction of the coating film part. The framework part has a plurality of annular linear members (21) extending along the circumferential direction of the coating film part while bending in the axial direction of the coating film part. The plurality of linear members are disposed in a row in the axial direction of the coating film part, and are attached and fixed to the surface of the coating film part at intermediate portions (21c) between end parts in the axial direction of the linear members.

Abstract: The purpose of the present invention is to provide a biliary stent making it possible to sufficiently exhibit a valve function while reducing the entire length of the biliary stent as compared to conventional ones. The present invention is a biliary stent (1) including a stent body (10), a tubular membrane (30) on one end of the stent body (10) and having a bile outflow port (34), and two support members (40, 50) which at one end (42, 52) are connected to the one end of the stent body (10) and at the other end (44, 54) are connected to the vicinity of the bile outflow port (34).

Abstract: The purpose of the present invention is to provide a biliary stent making it possible to sufficiently exhibit a valve function while reducing the entire length of the biliary stent as compared to conventional ones. The present invention is a biliary stent (1) including a stent body (10), a tubular membrane (30) on one end of the stent body (10) and having a bile outflow port (34), and two support members (40, 50) which at one end (42, 52) are connected to the one end of the stent body (10) and at the other end (44, 54) are connected to the vicinity of the bile outflow port (34).