Abstract: An elongated medical instrument-driving device includes a supporting member for supporting an elongated medical instrument having a front end and a rear end and a drive mechanism for applying a driving force to the supporting member so that the elongated medical instrument moves toward a front-end side. The drive mechanism is configured to apply the predetermined force or the predetermined velocity to the elongated medical instrument.

Abstract: A reentry catheter having a catheter body having a lumen extending axially through a length of the catheter body, a distal port in communication with the lumen, and a flexible distal tip positioned at a distal end of the catheter body. The distal tip can have a first planar surface and a second planar surface that are angled to form a tapered portion in the distal tip. A thickness of the tapered portion in a first direction can decrease along the length of the tapered portion and can be less than a width of the tapered portion in a second direction at every point along the length of the tapered portion such that the tapered portion of the tip is more flexible when bent in the first direction than in the second direction, the second direction being normal to the first direction.

Abstract: A guide wire includes a core shaft, a coil body disposed around an outer periphery of the core shaft, and a joining portion joining a distal end of the core shaft to a distal end of the coil body 3. An outer periphery of the joining portion has, at its proximal end, an uneven shape in a longitudinal direction of the guide wire. The outer periphery may include a protruded portion that protrudes proximally in the longitudinal direction, and a recessed portion that protrudes distally in the longitudinal direction. The guide wire has improved joining strength between the joining portion and the coil body, preventing the joining portion from detaching from the coil body.

Abstract: A reentry catheter having a catheter body having a lumen extending axially through a length of the catheter body, a distal port in communication with the lumen, and a flexible distal tip positioned at a distal end of the catheter body. The distal tip can have a first planar surface and a second planar surface that are angled to form a tapered portion in the distal tip. A thickness of the tapered portion in a first direction can decrease along the length of the tapered portion and can be less than a width of the tapered portion in a second direction at every point along the length of the tapered portion such that the tapered portion of the tip is more flexible when bent in the first direction than in the second direction, the second direction being normal to the first direction.

Abstract: A guide wire includes a core shaft, a coil body disposed around an outer periphery of the core shaft, and a joining portion joining a distal end of the core shaft to a distal end of the coil body 3, An outer periphery of the joining portion has, at its proximal end, an uneven shape in a longitudinal direction of the guide wire. The outer periphery may include a protruded portion that protrudes proximally in the longitudinal direction, and a recessed portion that protrudes distally in the longitudinal direction. The guide wire has improved joining strength between the joining portion and the coil body, preventing the joining portion from detaching from the coil body.

Abstract: A guidewire suppresses an increase in operating resistance during pushing and pulling within a blood vessel that is extremely crooked and secures sufficient operability. The guidewire includes a core shaft and a coil body wound around the core shaft. The core shaft includes a first shaft portion positioned inside the coil body and a second shaft portion positioned proximally from the coil body. A twisted portion that is twisted along a longitudinal axis of the core shaft is provided in at least part of the second shaft portion.

Abstract: Disclosed is an iron alloy article having an excellent bonding force between a resin and an iron alloy using an alkoxysilane-containing triazinethiol, and a method for producing the iron alloy article. Also disclosed is an iron alloy article including a base comprised of iron or an iron alloy, and a resin bonded to at least a portion of a surface of the base through a dehydrated silanol-containing triazinethiol derivative coating, the iron alloy article further including a metal compound film containing at least one selected from the group consisting of a hydroxide, a carboxylate, a phosphate, a sulfate, a thiosulfate, a chloride and a perchloride between the base and the dehydrated silanol-containing triazinethiol derivative coating.

Abstract: A shaft suppresses a permanent set, or plastic deformation, even when inserted into an extremely winding blood vessel. A guidewire incorporates the above shaft. The shaft is twisted along its longitudinal axis and has a cross section forming a substantially rectangular shape extending in a first direction perpendicular to the longitudinal axis. The cross section has at least one arcuate recess.

Abstract: A shaft suppresses a rise in operation resistance as it is pushed and pulled even inside an extremely winding blood vessel and thus secures sufficient torque transmission characteristics and operability. A guidewire may employ the above-described shaft. The shaft is twisted along its longitudinal axis and has a cross section that forms a substantially rectangular shape in a direction perpendicular to the longitudinal axis. Moreover, the cross section of the shaft has a projection that projects arcuately.

Abstract: A guide wire having sufficient flexibility and sufficient rigidity to prevent a bending point from progressing from a distal end of the guide wire to a proximal end of the guide wire even when the guide wire collides with a hard lesion. The guide wire includes a shaft and a first coil body wound around a distal portion of the shaft. The first coil body is formed by helically winding a stranded wire, which is formed by winding a plurality of element strands together. A joint portion is disposed at an intermediate part of the first coil body so as to join at least two adjacent stranded wires to each other without contacting the shaft.

Abstract: A guidewire suppresses an increase in operating resistance during pushing and pulling within a blood vessel that is extremely crooked and secures sufficient operability. The guidewire includes a core shaft and a coil body wound around the core shaft. The core shaft includes a first shaft portion positioned inside the coil body and a second shaft portion positioned proximally from the coil body. A twisted portion that is twisted along a longitudinal axis of the core shaft is provided in at least part of the second shaft portion.

Abstract: A shaft suppresses a rise in operation resistance as it is pushed and pulled even inside an extremely winding blood vessel and thus secures sufficient torque transmission characteristics and operability. A guidewire may employ the above-described shaft. The shaft is twisted along its longitudinal axis and has a cross section that forms a substantially rectangular shape in a direction perpendicular to the longitudinal axis. Moreover, the cross section of the shaft has a projection that projects arcuately.

Abstract: A shaft suppresses a permanent set, or plastic deformation, even when inserted into an extremely winding blood vessel. A guidewire incorporates the above shaft. The shaft is twisted along its longitudinal axis and has a cross section forming a substantially rectangular shape extending in a first direction perpendicular to the longitudinal axis. The cross section has at least one arcuate recess.

Abstract: Disclosed are an aluminum alloy article having an excellent bonding force between a resin and an aluminum alloy using an alkoxysilane-containing triazinethiol, and a method for producing the same. The aluminum alloy article comprises a substrate made of aluminum or an aluminum alloy, and a resin bonded onto at least a portion of a surface of the substrate through a dehydrated silanol-containing triazinethiol derivative layer. The aluminum alloy article comprises a metal compound layer containing at least one selected from the group consisting of a hydroxide, a hydrous oxide, an ammonium salt, a carboxylate, a phosphate, a carbonate, a silicate, and a fluoride between the substrate and the dehydrated silanol-containing a triazinethiol derivative layer.

Abstract: The present invention provides an iron alloy article having an excellent bonding force between a resin and an iron alloy using an lkoxysilane-containing triazinethiol, and a method for producing the iron alloy article. Disclosed is an iron alloy article including a base composed of iron or an iron alloy, and a resin bonded to at least a portion of a surface of the base through a dehydrated silanol-containing triazinethiol derivative coating, the iron alloy article further including a metal compound film containing at least one selected from the group consisting of a hydroxide, a carboxylate, a phosphate, a sulfate, a thiosulfate, a chloride and a perchloride between the base and the dehydrated silanol-containing triazinethiol derivative coating.