Transdermal Catheters and Transdermal Catheter Assemblies

摘要

[Problem] To provide a transdermal catheter capable of reducing the pressure loss of the liquid circulating in the circulation circuit and securing the required flow rate of the liquid without increasing the invasion or burden on the patient''s body. [Solutions] The transdermal catheter 30 has a catheter tube 31 extending in the axial direction, and a tip tip 41 that is provided on the tip side of the catheter tube, and is configured so that the dilator 50 can abut it, The catheter tube is provided on the proximal end side of the distal tip, the uncoated portion 32 including the wire W braided to cross, and the uncoated portion provided on the proximal end side of the uncoated portion, the wire braided to cross the resin material 33a ), and before the dilator is inserted, the inner diameter of the uncoated portion is larger than the outer diameter of the dilator, and when the dilator is inserted, the uncoated portion is the above By extending in the axial direction and reducing the inner diameter, the inner peripheral portion 32b of the uncoated portion is in close contact with the outer peripheral portion 50b of the dilator.