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US 11,110,253 B2Granted
Catheter assembly
AssigneeTerumo Kabushiki Kaisha
InventorToshiya Asai
Life of this patent
Estimating the term…
Abstract
A catheter assembly includes: a catheter; a catheter hub connected to the catheter; an inner needle removably disposed in the catheter; a needle hub connected to the inner needle; and a deflection suppressing member that suppresses deflection of the inner needle by supporting the inner needle via the catheter at a location distal of the catheter hub. The deflection suppressing member is supported so as to be movable relative to the needle hub in an axial direction.
Claims19
A catheter assembly comprising:
- a catheter;
- a catheter hub connected to the catheter;
- an inner needle removably disposed in the catheter;
- a needle hub connected to the inner needle;
- and
- a deflection suppressing member that suppresses deflection of the inner needle by supporting the inner needle via the catheter at a location distal of the catheter hub,
- wherein the deflection suppressing member is supported so as to be movable relative to the needle hub and the catheter in an axial direction,
- wherein the deflection suppressing member includes, at a distal end thereof, a support portion that contacts the catheter and that is movable relative to the catheter while maintaining contact with the catheter, and
- wherein the catheter assembly is configured such that at least the needle hub and the catheter are advanceable together relative to the deflection suppressing member.
6 more elements
A method of using a catheter assembly, the method comprising:
- providing the catheter assembly, which comprises:
- a catheter,
- a catheter hub connected to the catheter,
- an inner needle removably disposed in the catheter,
- a needle hub connected to the inner needle, and
- a deflection suppressing member that suppresses deflection of the inner needle by supporting the inner needle via the catheter at a location distal of the catheter hub,
- wherein the deflection suppressing member is supported so as to be movable relative to the needle hub and the catheter in an axial direction,
- wherein the deflection suppressing member includes, at a distal end thereof, a support portion that contacts the catheter and that is movable relative to the catheter while maintaining contact with the catheter;
- grasping the catheter assembly and puncturing skin of a patient toward a blood vessel of the patient with the inner needle and the catheter;
- and
- puncturing the blood vessel with a distal end of each of the inner needle and the catheter by advancing at least the needle hub and the catheter relative to the deflection suppressing member while holding the deflection suppressing member.
8 more elements
A catheter assembly comprising:
- a catheter;
- a catheter hub connected to the catheter;
- an inner needle removably disposed in the catheter;
- a needle hub connected to the inner needle;
- and
- a deflection suppressing member that suppresses deflection of the inner needle by supporting the inner needle via the catheter at a location distal of the catheter hub,
- wherein the deflection suppressing member is supported so as to be movable relative to the needle hub and the catheter in an axial direction,
- wherein the deflection suppressing member includes, at a distal end thereof, a support portion that contacts the catheter and that is movable relative to the catheter while maintaining contact with the catheter,
- wherein the inner needle is hollow and has an inner cavity, and
- wherein the catheter assembly further comprises a guide wire disposed in the inner cavity so as to be movable relative to the inner needle in the axial direction.
7 more elements
Dependencies are inferred from the claim text.