Back to results
US 2026/0077160 A1Published application
Catheter Tip
AssigneeTerumo Kabushiki Kaisha
InventorsKotaro Kaneko, Ryota Matsuzaki
Life of this patent
Estimating the term…
Abstract
A catheter tip contains a catheter tip resin layer containing a resin having an ester bond and/or an amide bond, carbodiimide, and tungsten carbide (WC). The content of the carbodiimide is more than 0% by mass and less than 0.5% by mass with respect to the total mass of the catheter tip resin layer. An elongation residual ratio is 70% or more.
Claims20
A catheter tip comprising:
- a catheter tip resin layer containing a resin having an ester bond and/or an amide bond, carbodiimide, and tungsten carbide, wherein a content of the carbodiimide is more than 0% by mass and less than 0.5% by mass with respect to a total mass of the catheter tip resin layer.
A catheter comprising:
- a catheter body portion extending in an axial direction;
- a catheter tip disposed on a distal side of the catheter body portion;
- a hub disposed on a proximal side of the catheter body portion;
- and
- wherein the catheter includes a catheter tip resin layer containing a resin having an ester bond and/or an amide bond, carbodiimide, and tungsten carbide, wherein a content of the carbodiimide is more than 0% by mass and less than 0.5% by mass with respect to a total mass of the catheter tip resin layer.
2 more elements
A catheter comprising:
- a catheter body portion extending in an axial direction;
- a catheter tip disposed on a distal side of the catheter body portion;
- the catheter includes a catheter tip resin layer containing a resin having an ester bond and/or an amide bond, carbodiimide, and tungsten carbide, wherein a content of the carbodiimide is more than 0% by mass and less than 0.5% by mass with respect to a total mass of the catheter tip resin layer;
- wherein the catheter tip has an elongation residual ratio represented by Formula (1) is 70% or more:
- e
-
- longation
-
- residual
-
- ratio
- [
- %
- ]
- =
- B
- /
- A
- ×
- 100
- Formula
-
- (
- 1
- )
- wherein A represents a breaking stroke length in a tensile test of the catheter tip resin layer before a load test, B represents a breaking stroke length in the tensile test of the catheter tip resin layer after a load test, and
- the load test is performed by allowing a dumbbell-shaped test piece to stand for 30 hours under conditions of a temperature of 80° C. and a humidity of 95% RH;
- and
- wherein the content of the carbodiimide in the catheter tip is more than 0% by mass and 0.3% by mass or less with respect to the total mass of the catheter tip resin layer.
26 more elements
Dependencies are inferred from the claim text.