Abstract: A dialysis catheter is provided which makes it possible to improve patency without reducing the ease of insertion, while also making it possible to effectively suppress the “clinging phenomenon”. The dialysis catheter has a first portion provided with a thickened part which increases the thickness of the peripheral wall of a blood feed lumen on the blood removal lumen side thereof, and the cross-sectional area of the first portion is smaller than the cross-sectional area of a second portion.

Abstract: A dialysis catheter is provided which makes it possible to improve patency without reducing the ease of insertion, while also making it possible to effectively suppress the “clinging phenomenon”. The dialysis catheter has a first portion provided with a thickened part which increases the thickness of the peripheral wall of a blood feed lumen on the blood removal lumen side thereof, and the cross-sectional area of the first portion is smaller than the cross-sectional area of a second portion.

Abstract: A triple lumen catheter comprises a transfusion lumen (4), a blood feeding lumen (2) and a blood removing lumen (3). The transfusion lumen (4) has a distal end and a leading end portion (12, 12A), the leading end portion progressively reducing in diameter to a proximal end. A transfusion port (4a) is formed in the proximal end of the transfusion lumen. The blood feeding lumen (2) has a blood feeding port (2a) in a region of the proximal end of the leading end portion, the blood feeding port opening at least partially in an axial direction of the leading end portion. The blood removing lumen (3) includes a pair of blood removing ports (3a, 3b) provided in opposite side walls of the catheter, the blood removing lumen extending from a distal end at least to the blood removing ports.

Abstract: A triple lumen catheter comprises a transfusion lumen (4), a blood feeding lumen (2) and a blood removing lumen (3). The transfusion lumen (4) has a distal end and a leading end portion (12, 12A), the leading end portion progressively reducing in diameter to a proximal end. A transfusion port (4a) is formed in the proximal end of the transfusion lumen. The blood feeding lumen (2) has a blood feeding port (2a) in a region of the proximal end of the leading end portion, the blood feeding port opening at least partially in an axial direction of the leading end portion. The blood removing lumen (3) includes a pair of blood removing ports (3a, 3b) provided in opposite side walls of the catheter, the blood removing lumen extending from a distal end at least to the blood removing ports.

Abstract: A stylet device includes a deformable stylet having an elongated shape and being provided with at least one actuator wire lumen extending in an axial direction in a position that is radially off-center with respect to a cross section of the stylet. At least one actuator wire is inserted into the actuator wire lumen. One end of the actuator wire is affixed to the stylet. A tension-conferring means is connected to another end of the actuator wire for imparting tension to the actuator wire. A medical tube assembly includes the stylet device and a medical tube having an interior into which the stylet of the stylet device is inserted.

Abstract: A medical tube has a main body portion and a steerable distal portion made from the same material as the distal portion. A plurality of lumens extend through the main body portion including guide wire lumens through which guide wires (extend from the steerable distal portion to a control device at a proximal end of the main body portion.