Catheter
AssigneeKaneka Corporation
InventorsKeita Kuroda, Youhei Kurose
Life of this patent
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Abstract
A catheter (1) has a distal side and a proximal side and includes a tip part (10) and a main body part (20) disposed proximal to the tip part (10), the main body part (20) includes a first layer (21) and a second layer (22), the first layer (21) contains 60% by mass or more of an ethylene-tetrafluoroethylene copolymer, the second layer (22) is disposed inside of the first layer (21) in a radial direction of the catheter (1) and contains 60% by mass or more of a polyamide resin, and a cantilever bending load of the tip part (10) is smaller than a cantilever bending load of the main body part (20).
Claims16
A catheter having a distal side and a proximal side, comprising:
- a tip part located at the distal side of the catheter;
- and
- a main body part located at the proximal side of the catheter, the main body part and the tip part connected to each other to form a tubular member, wherein
- the main body part includes a first layer and a second layer,
- the first layer contains 60% by mass or more of an ethylene-tetrafluoroethylene copolymer,
- the second layer is disposed inside of the first layer in a radial direction of the catheter and contains 60% by mass or more of a polyamide resin,
- a cantilever bending load of the tip part is smaller than a cantilever bending load of the main body part at a cantilever bending load test,
- a radiopaque marker is disposed at a proximal end part of the tip part,
- an outermost layer of the tip part is colored, so that position of the tip part can be visually recognized by an endoscope when the catheter is inserted into a body lumen, and
- the radiopaque marker is positioned so as to expose to a lumen of the tip part.
Dependencies are inferred from the claim text.