Abstract: A stent has strut parts bent in a zigzag shape, connected at both ends thereof, and formed in a ring shape, and bridge parts for connecting the strut parts in an axial direction, peak parts of strut parts excluding a strut part at the lead toward one end are all connected by bridge parts and clustered a plurality thereof at a time by the bridge parts, and connected to valley parts of struts adjacent toward the one end of the stent, and each strut part includes valley parts which are not connected to a bridge part.

Abstract: Provided are a stent to be placed in the bile duct and a process for producing the stent, the stent hollow being less apt to be blocked even when the stent is placed in the bile duct for a long period. The inner peripheral surface of the stent is coated with a resin layer with resistance to sludge formation that includes a polymer obtained by polymerizing 2-methoxyethyl acrylate. This stent is produced by applying a coating fluid that contains 0.1-0.5 mass % polymer obtained by polymerizing 2-methoxyethyl acrylate, to the inner peripheral surface of a stent.

Abstract: A stent has strut parts bent in a zigzag shape, connected at both ends thereof; and formed in a ring shape, and bridge parts for connecting the strut parts in an axial direction, peak parts of strut parts excluding a strut part at the lead toward one end are all connected by bridge parts and clustered a plurality thereof at a time by the bridge parts, and connected to valley parts of struts adjacent toward the one end of the stent, and each strut part includes valley parts which are not connected to a bridge part.

Abstract: A stent, in which a silicone film can be formed in a small thickness and uniformly and the diameter of the stent can be reduced, includes: a tubular stent main body which is formed by processing a metal tube or a metal sheet or weaving a metal wire material and has mesh-like openings; an inside cover which is so coated around the stent main body as to cover the mesh-like openings and is composed of a polyurethane film; and an outside cover which is coated on the outer periphery of the stent main body and the inside cover and is composed of a silicone film.

Abstract: Provided are a stent to be placed in the bile duct and a process for producing the stent, the stent hollow being less apt to be blocked even when the stent is placed in the bile duct for a long period. The inner peripheral surface of the stent is coated with a resin layer with resistance to sludge formation that includes a polymer obtained by polymerizing 2-methoxyethyl acrylate. This stent is produced by applying a coating fluid that contains 0.1-0.5 mass % polymer obtained by polymerizing 2-methoxyethyl acrylate, to the inner peripheral surface of a stent.

Abstract: This stent is a self-expandable stent constituted of an Ni—Ti base alloy or Co—Cr base alloy and formed into a cylindrical shape with mesh openings. The stent has been configured so that the Af point is 22-26° C., the stress-displacement curve has a yield point, and the crystal grains in a cross-section of the stent have an average cross-sectional area, as determined by the area fraction method, of 0.2-50 ?m2.

Abstract: A stent of interconnected ring-shaped stent units formed by a continuous threadlike material that extends back and forth to form a zigzag pattern of segments extending between opposite side turned edge portions. The zigzag pattern forming the outer circumference of each ring-shaped stent unit with at least some of said turned edge portions at a same side of the segments having a shifted position along the stent axial direction relative to a position of others of said turned edge portions at that same side of the segments so that not all of the adjacent tuned edge portions at that same side of the segments are aligned along a common circle extending around the outer circumference of each ring-shaped stent unit. At least some of the turned edge portions are also formed to have a wider line width than the line width of the segments.

Abstract: The present invention provides a stent delivery catheter comprising: an inner tube which has a distal end and a proximal end and in which a stent is set around the outer circumferential surface at the distal end side of the inner tube; an outer tube having a distal end and a proximal end, being coaxially arranged around the outer circumference of the inner tube, and being relatively movable in the axial direction to the inner tube; and a drive means being arranged at the proximal end side of the inner tube and the outer tube and being capable of making the outer tube relatively movable towards the proximal end to the inner tube, wherein with the operation of the drive means, a liquid fluidly travels through the gap between the inner tube and the outer tube from the proximal end side to the distal end direction.

Abstract: A stent 2 comprising a ring-shaped stent unit 4 formed by a zigzag-shaped threadlike material 10 continuing in the circumferential direction and expandable in the radius direction R from a contracted state. At least one of turned edge portions 8a and 8b of the zigzag-shaped threadlike material 10 composing said stent unit 4 and at least one of turned edge portions 8a and 8b of the zigzag-shaped threadlike material 10 in another stent unit 4 being adjacent to the stent unit 4 in the axial direction are connected in the axial direction X by a connection portion 6. The turned edge portions 8a and 8b position by being shifted in the axial direction X of the stent from each other between said turned edge portions 8a and 8b next to each other in the circumferential direction Y.

Abstract: A cell growth inhibiting film including a resin and having a porous structure formed at least on its surface, a cell growth inhibiting method including causing the surface of a film including a resin and having a porous structure formed at least on its surface to contact cells to inhibit growth of the cells in the contact area, a medical instrument including a medical instrument substrate and a film including a resin and having a porous structure formed at least on its surface, in which the surface of the medical instrument substrate is entirely or partially covered with the film, and a digestive system stent including a stent substrate and a film including a resin and having a porous structure formed by through-holes with an average pore size of 0.1 to 20 ?m and a coefficient of variation in pore size of 30% or less, in which the stent substrate is covered with the film.

Abstract: The present invention provides an intravascular catheter comprising a catheter part; an internal needle disposed through the catheter part; and a flexible resin member disposed on the outer surface of the catheter part. It is preferable that the intravascular catheter comprises a blood leakage prevention member for preventing leakage of blood by closing the catheter part via the flexible resin member. It is also preferable that the blood leakage prevention member comprises a pressure part capable of pressuring the catheter part via the flexible resin member. It is further preferable that the blood leakage prevention member comprises a fixing mechanism capable of fixing the pressure part in the pressuring state, and a releasing mechanism capable of releasing the pressuring state.

Abstract: The present invention provides an intravascular catheter comprising a catheter part; an internal needle disposed through the catheter part; and a flexible resin member disposed on the outer surface of the catheter part. It is preferable that the intravascular catheter comprises a blood leakage prevention member for preventing leakage of blood by closing the catheter part via the flexible resin member. It is also preferable that the blood leakage prevention member comprises a pressure part capable of pressuring the catheter part via the flexible resin member. It is further preferable that the blood leakage prevention member comprises a fixing mechanism capable of fixing the pressure part in the pressuring state, and a releasing mechanism capable of releasing the pressuring state.

Abstract: An indwelling catheter is made of a polyurethane resin having a Shore hardness of 60D or more. The soft segment of the polyurethane resin is constituted by polycaprolactone. The indwelling catheter has a kinking resistance of 10 mm or more when measured at 37.degree. C. in wet state. The Young's modulus is at first 20 kgf/mm.sup.2 or more when measure at 25.degree. C. in dry state, and reduces to 15 kgf/mm.sup.2 or less by soaking it in water of 37.degree. C. for 5 minutes or less.