TUBE FOR MEDICAL TREATMENT

PURPOSE:To hold the shape of a tube body by easily deforming the tube body in a desired three-dimensional shape by a method wherein a plurality of cores plastically deformed and holding a deforming shape are positioned in juxtaposition in only the one region of regions, into which the radial section of the tube body is divided by means of a central line, and along the direction of length. CONSTITUTION:Linear cores 4 and 4 are situated in the direction of the length of a small part 2 of a cannula body 1. The cores 4 and 4 are formed by using a wire rod, e.g. a stainless steel, or a nickel - tin alloy, the resilient deformation of which is slight and which is capable of holding the shape of plastic deformation. The cores 4 and 4 in the radial section of a small part 2 are positioned only in the one of regions of a tube body divided from each other by means of a given central line passing a center 0. This constitution easily bends the small part 2 in any direction. Besides, since kink is difficult to occur regardless of a bending direction and deforming shape is reliably held, a heart can be easily and rapidly connected to a blood pump device by using one kind of a cannula.