Abstract: A catheter that includes an inner layer forming the inner surface of a tubular catheter main body having a lumen, an outer layer forming the outer surface of the catheter main body, and multiple reinforcements embedded between the inner surface and the outer surface. The inner diameter of the catheter main body is D1, the outer diameter is D2, the wall thickness is T1, a thickness of each reinforcement is T2, an effective width of each reinforcement is W, and a total number of the multiple reinforcements is N. The catheter satisfies Expressions (1), (2), and (3): 0.050 mm?T1?0.100 mm??Expression (1) T2/T1?0.25??Expression (2) 60,000?(D1×D2×W×N)/(T12×T2)<1,000,000??Expression (3).

Abstract: A semiconductor device includes an insulated circuit board including a circuit pattern, a semiconductor chip on the circuit pattern, a wire connected to the semiconductor chip, an external connection terminal including a leg portion extending in a direction perpendicular to a front surface of the circuit pattern and a terminal portion electrically connected to the leg portion, and a case including a frame portion which surrounds an insulated circuit board and a beam portion bonded to an external connection terminal and overlapping at least a part of a wire in a plan view of the semiconductor device, and a sealing member with which the case is filled, which seals a front surface of the insulated circuit board, a semiconductor chip, the wire, and a back surface of the beam portion, and which is exposed in the plan view from a gap between a leg portion and the beam portion.

Abstract: A catheter is disclosed having a distal end portion of a shaft with high breaking strength even if a wall thickness of the distal end portion of the shaft is relatively small. The catheter includes an elongated tube shaped shaft. The shaft has an inner layer having a lumen along a longitudinal direction, an outer layer covering an outer peripheral side of the inner layer, and a reinforcement body disposed on the outer peripheral side of the inner layer. The outer layer has a distal outer layer on a distal end portion of the shaft, an intermediate outer layer proximal to the distal outer layer, and a proximal outer layer proximal to the intermediate outer layer. The intermediate outer layer is more flexible and thicker than the proximal outer layer, and a distal end of the reinforcement body is located proximal to a distal end of the intermediate outer layer.

Abstract: A catheter that includes an inner layer forming the inner surface of a tubular catheter main body having a lumen, an outer layer forming the outer surface of the catheter main body, and multiple reinforcements embedded between the inner surface and the outer surface. The inner diameter of the catheter main body is D1, the outer diameter is D2, the wall thickness is T1, a thickness of each reinforcement is T2, an effective width of each reinforcement is W, and a total number of the multiple reinforcements is N. The catheter satisfies Expressions (1), (2), and (3): 0.050 mm?T1?0.100 mm??Expression (1) T2/T1?0.25??Expression (2) 60,000?(D1×D2×W×N)/(T12×T2)<1,000,000??Expression (3).

Abstract: A catheter that includes an inner layer forming the inner surface of a tubular catheter main body having a lumen, an outer layer forming the outer surface of the catheter main body, and multiple reinforcements embedded between the inner surface and the outer surface. The inner diameter of the catheter main body is D1, the outer diameter is D2, the wall thickness is T1, a thickness of each reinforcement is T2, an effective width of each reinforcement is W, and a total number of the multiple reinforcements is N. The catheter satisfies Expressions (1), (2), and (3): 0.050 mm?T1?0.100 mm??Expression (1) T2/T1?0.25??Expression (2) 60,000?(D1×D2×W×N)/(T12×T2)<1,000,000??Expression (3).

Abstract: A catheter is disclosed having a distal end portion of a shaft with high breaking strength even if a wall thickness of the distal end portion of the shaft is relatively small. The catheter includes an elongated tube shaped shaft. The shaft has an inner layer having a lumen along a longitudinal direction, an outer layer covering an outer peripheral side of the inner layer, and a reinforcement body disposed on the outer peripheral side of the inner layer. The outer layer has a distal outer layer on a distal end portion of the shaft, an intermediate outer layer proximal to the distal outer layer, and a proximal outer layer proximal to the intermediate outer layer. The intermediate outer layer is more flexible and thicker than the proximal outer layer, and a distal end of the reinforcement body is located proximal to a distal end of the intermediate outer layer.

Abstract: A catheter assembly includes an outer catheter and an inner catheter. The inner catheter has an accommodation unit which can be positioned on a farther distal side than an outer catheter body in a state where an inner catheter body is inserted into the outer catheter body, extends in a proximal direction from the inner catheter body, and can accommodate an outer catheter distal portion so as to surround an outer circumference thereof in a state where the outer catheter distal portion formed at a distal end of the outer catheter body is reduced in diameter. The outer catheter distal portion can be separated from the accommodation unit and can expand in diameter by moving the inner catheter body in a distal end direction relatively with respect to the outer catheter body from a state of being accommodated in the accommodation unit.

Abstract: A catheter is disclosed which has at least a two-layered structure and can suppress decrease in function thereof by suppressing the disorder at an interface between layers during use, and a method for manufacturing the same. The catheter has an inner layer as a tube shaped body made of a thermoplastic resin and an outer layer, as a tube shaped body made of a thermoplastic resin, coming into contact with the outer surface of the inner layer, and has a reinforcement member which is at least partially embedded in the inner layer and includes a gap leading the inner layer toward the radial outside of the catheter. The inner layer has a protrusion which extends in an axial direction of the catheter while protruding from the gap to the radial outside, is positioned on the radial outside of the reinforcement member, and ingrows into the outer layer.

Abstract: A catheter that includes an inner layer forming the inner surface of a tubular catheter main body having a lumen, an outer layer forming the outer surface of the catheter main body, and multiple reinforcements embedded between the inner surface and the outer surface. The inner diameter of the catheter main body is D1, the outer diameter is D2, the wall thickness is T1, a thickness of each reinforcement is T2, an effective width of each reinforcement is W, and a total number of the multiple reinforcements is N. The catheter satisfies Expressions (1), (2), and (3): 0.050 mm?T1?0.100 mm??Expression (1) T2/T1?0.25??Expression (2) 60,000?(D1×D2×W×N)/(T12×T2)<1,000,000??Expression(3).

Abstract: A catheter is disclosed which has at least a two-layered structure and can suppress decrease in function thereof by suppressing the disorder at an interface between layers during use, and a method for manufacturing the same. The catheter has an inner layer as a tube shaped body made of a thermoplastic resin and an outer layer, as a tube shaped body made of a thermoplastic resin, coming into contact with the outer surface of the inner layer, and has a reinforcement member which is at least partially embedded in the inner layer and includes a gap leading the inner layer toward the radial outside of the catheter. The inner layer has a protrusion which extends in an axial direction of the catheter while protruding from the gap to the radial outside, is positioned on the radial outside of the reinforcement member, and ingrows into the outer layer.

Abstract: A catheter assembly includes an outer catheter and an inner catheter. The inner catheter has an accommodation unit which can be positioned on a farther distal side than an outer catheter body in a state where an inner catheter body is inserted into the outer catheter body, extends in a proximal direction from the inner catheter body, and can accommodate an outer catheter distal portion so as to surround an outer circumference thereof in a state where the outer catheter distal portion formed at a distal end of the outer catheter body is reduced in diameter. The outer catheter distal portion can be separated from the accommodation unit and can expand in diameter by moving the inner catheter body in a distal end direction relatively with respect to the outer catheter body from a state of being accommodated in the accommodation unit.