Abstract: A medical needle includes a needle portion (10) having a needle tip on a distal end, a case (30) configured to be capable of accommodating the needle portion that can be exposed from the distal end side, a movement mechanism (50) for moving the needle portion inside the case, and a movement restricting portion (37) that restricts the needle tip accommodated in the case from moving in a direction opposite to a moving direction of the needle portion. The movement restricting portion maintains the needle tip accommodated in the case such that the needle tip can come into contact with an inner face of the case to restrict the movement of the needle tip in the opposite direction.

Abstract: This covered stent 100, which is released from a sheath 200 and placed in a lumen in a living body, is provided with: a tubular skeleton portion 11 which is stretchable in the axial direction and is expandable in the radial direction substantially perpendicular to the axial direction; and a stretch restriction portion 2 for restricting stretching of the skeleton portion in the axial direction. The stretch restriction portion is formed from a material different from that of the skeleton portion and restricts stretching of the skeleton portion in the axial direction when the skeleton portion is contracted in the radial direction while being stored in the sheath.

Abstract: The stent graft (10) is to be placed in a tubular tissue and is equipped with: a skeleton portion (11); a tubular graft portion (12) having, in part of a tube wall, a side opening (opening 121a of branch portion 121) that communicates with the lumen, the graft portion being provided along the skeleton portion; and a position adjustment portion (13) capable of adjusting the relative position of the side opening in the graft portion when the stent graft is placed in the tubular tissue.

Abstract: A shaft-shaped member 30 of an indwelling device 1 has an engaged portion 33 with which an engaging portion 15 of a tubular treatment device 10 engages, and a restriction portion 34 that restricts expansion of the engaging portion 15 engaged with the engaged portion 33 in a radial direction in cooperation with a linear member 36. The restriction portion 34 releases restriction on the expansion of the engaging portion 15 in the radial direction by releasing winding of the linear member 36 around the engaging portion 15.

Abstract: The purpose of the present invention is to provide a resin composition for manufacturing a medical storage container that has improved oxygen permeability and that tends not to have excessively lower transparency. To this end, the present invention pertains to a resin composition for manufacturing a medical storage container, the composition including polyethylene (a) and polymethylpentene (b). The resin composition contains, as polyethylene (a), a first polyethylene (a-1), which is a main component of the polyethylene (a), and a second polyethylene (a-2) having a lower density than the first polyethylene.

Abstract: A membrane body for a tubular treatment device includes a tubular membrane portion (12). The membrane portion forms a multi-layer structure having a first layer (21) formed of a fiber and a second layer (22) having liquid permeability lower than that of the first layer.

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: A foreign substance removing device includes a tubular member and a retriever configured to be expandable to and contractible from a predetermined shape. The retriever includes main wires disposed to be centered around a tube axis of the tubular member, and sub wires each connecting adjacent ones of the main wires to each other. Each of the main wires is configured to curve when the retriever is expanded such that a space having a predetermined size is provided by the main wires. Each of the sub wires is configured to be foldable at at least one point between the adjacent ones of the main wires. When the retriever is expanded, the folding points of the sub wires are positioned inside the space such that the sub wires do not protrude out of the main wires.

Abstract: Provided is a stent which is not easily displaced from a dwell site in a biological lumen and which has an excellent ability to follow a biological lumen. This stent (bile duct stent 100) is to dwell inside a biological lumen (bile duct B) and is provided with a stent main body section (110) having a cylindrical shape. The stent main body section is configured to be capable of expanding and contracting in the radial direction that is approximately orthogonal to an axial direction, has a relatively large expanding force in one portion (center portion) corresponding to the predetermined position at the indwelling site in the biological lumen, and a relatively small expanding force at other portions (both end portions) which have different positions in the axial direction from that of the one portion.

Abstract: Provided are a tubular therapeutic implement, a tubular therapeutic implement set, and a tubular therapeutic implement indwelling device, all of which enable appropriate indwelling at a branching portion in a tubular tissue. This stent graft 30 is provided with: a frame portion (32) having a plurality of frame pieces (321-325); and a tubular graft portion (33) which is provided along the frame portion, wherein the tube wall of the graft portion is provided with a lateral opening (through-hole 36 of a branching section 35) that is connected with an inner cavity of the graft portion, and when the region between one end and the other end of the graft portion is compartmented into a first region (P) that includes the lateral opening and a second region (Q) that dose not include the lateral opening, the frame pieces are not situated in the first region, but are in the second region.

Abstract: A capturing unit provided on a distal end of a second tube can be deformed into a contracted state and an expanded state, in which the capturing unit is deployed to form a capturing chamber. The capturing chamber has an opening area decreased as it goes from a distal end opening of the capturing chamber toward a proximal end opening of the capturing chamber. A third tube rotatable relative to the second tube and a cutting unit provided on a distal end of the third tube for cutting a foreign substance are arranged in a second lumen. In the expanded state of the capturing unit, the cutting unit is arranged more toward the proximal end opening of the capturing chamber than the distal end opening.

Abstract: Provided is a stent graft which has excellent releasability from a sheath and which can accommodate thinning of the sheath without being subjected to various constraints. A stent graft (10A) is placed inside the descending aorta (A1) and includes a tubular membrane portion (G) and a framework portion (5) that is disposed in the membrane portion. The framework portion includes straight portions (Sb) and bent portions (Sa, Sc) formed to be continuous with the straight portions, and extends in the circumferential direction while bending, wherein the bent portions are sewn onto the membrane portion by a suture (D) having a diameter of 0.05 to 0.15 [mm], and the sewing direction of the suture is substantially parallel to the axial direction.

Abstract: Provided is a medical needle that reduces a user's discomfort feeling while securely housing a needle tip into a case. Medical needle 1 includes needle portion 10 including needle tip 14 at the head thereof; case 30 configured to be capable of exposing needle portion 10 from the head thereof and housing the needle portion; movement mechanism 50 including spring member 60, which is located in case 30, configured to move needle portion 10 from a first position at which needle tip 14 protrudes from case 30 by a predetermined length to a second position at which needle tip 14 is housed in case 30; and curved portion 90 provided in a portion which is in movement mechanism 50 and faces case 30.

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 filler delivery device is configured to place a filler inside a bulge occurring in a body lumen. The filler delivery device includes a frame member configured to be expandable and compressible, and a tubular member through which a catheter for injecting the filler into the bulge is insertable. The tubular member is provided such that, when the frame member is in an expanded state, an open end of the tubular member is directed in a direction intersecting an extending direction of the body lumen. The filler material includes a base gel having flowability with which the filler material flows inside the catheter, and shape retainability with which the filler material stays inside the bulge after being injected from the catheter into the bulge, and a solidification promoting substance that promotes solidification of blood inside the bulge.

Abstract: A medical device is configured to treat a body cavity. The medical device includes a tubular sheath portion, a foreign substance capturing catheter configured to be movable inside the sheath portion, the foreign substance capturing catheter having a capturing portion configured to capture a foreign substance inside the body cavity, a treatment catheter configured to be movable inside the foreign substance capturing catheter, the treatment catheter having a treatment portion configured to treat the body cavity. The medical device is configured to be inserted into the body cavity in a state in which the treatment catheter is set inside the foreign substance capturing catheter and the foreign substance capturing catheter is set inside the sheath portion.

Abstract: Provided are a stent graft and a stent-graft placement device with which it is possible to suitably align a side opening of a main blood vessel stent graft and a blood vessel opening of a branch blood vessel. The stent graft (10) is to be placed in a tubular tissue and is equipped with: a skeleton portion (11); a tubular graft portion (12) having, in part of a tube wall, a side opening (opening 121a of branch portion 121) that communicates with the lumen, the graft portion being provided along the skeleton portion; and a position adjustment portion (13) capable of adjusting the relative position of the side opening in the graft portion when the stent graft is placed in the tubular tissue.

Abstract: Provided is a gastrointestinal stent that can be placed accurately at a placement target site of the gastrointestinal tract. A gastrointestinal stent (large intestine stent 1) is a gastrointestinal stent that is placed inside the gastrointestinal tract (large intestine C) and has a tubular shape. The gastrointestinal stent comprises: a skeleton portion (11) capable of expanding and contracting in a radial direction substantially perpendicular to an axial direction; and a conversion section (restraint string 13) capable of converting one portion (rear end portion 11b) of the skeleton portion in the axial direction from the contracted state to the expanded state while keeping the other portion (front end portion 11a) of the skeleton portion in the contracted state.

Abstract: This covered stent 100, which is released from a sheath 200 and placed in a lumen in a living body, is provided with: a tubular skeleton portion 11 which is stretchable in the axial direction and is expandable in the radial direction substantially perpendicular to the axial direction; and a stretch restriction portion 2 for restricting stretching of the skeleton portion in the axial direction. The stretch restriction portion is formed from a material different from that of the skeleton portion and restricts stretching of the skeleton portion in the axial direction when the skeleton portion is contracted in the radial direction while being stored in the sheath.

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.