Catheter assembly
AssigneeTerumo Kabushiki Kaisha
InventorTakayuki YOKOTA
Life of this patent
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Abstract
A catheter assembly includes: a catheter having an inner cavity; and an inner needle retractably located in the inner cavity of the catheter. The inner needle includes: a barrel, a blade surface located distal of the barrel and being inclined with respect to a center axis of the inner needle, and an inner needle side locking surface located at least at a portion of an outer surface linking the barrel with the blade surface. An inner surface of the catheter includes a catheter side locking surface in contact with the inner needle side locking surface such that relative movement of the catheter in a proximal direction with respect to the inner needle is restricted.
Claims20
A catheter assembly comprising:
- a catheter having an inner cavity;
- and
- an inner needle retractably located in the inner cavity of the catheter;
- wherein the inner needle comprises:
- a barrel,
- a blade surface located distal of the barrel and being inclined with respect to a center axis of the inner needle, and
- an inner needle side locking surface located at least at a portion of an outer surface linking the barrel with the blade surface,
- wherein an inner surface of the catheter comprises a catheter side locking surface in contact with the inner needle side locking surface such that relative movement of the catheter in a proximal direction with respect to the inner needle is restricted.
A catheter assembly comprising:
- a catheter having an inner cavity;
- and
- an inner needle retractably located in the inner cavity of the catheter;
- wherein the inner needle comprises:
- a barrel having an outer surface,
- a pair of extending surfaces extending distally from the barrel,
- an inner needle side locking surface extending from the outer surface of the barrel to the pair of extending surfaces, in a direction traverse to a center axis of the inner needle, and
- a blade surface located distal of the barrel, and
- wherein an inner surface of the catheter comprises a catheter side locking surface extending in a direction traverse to the center axis of the inner needle, the catheter side locking surface being in contact with the inner needle side locking surface.
A catheter assembly comprising:
- a catheter having an inner cavity;
- and
- an inner needle retractably located in the inner cavity of the catheter;
- wherein the inner needle comprises:
- a barrel having an outer surface,
- a pair of extending surfaces located distal of the barrel,
- a proximal end joining surface extending distally from the barrel to the pair of extending surfaces,
- an inner needle side locking surface extending from the outer surface of the barrel to the proximal end joining surface, in a direction traverse to a center axis of the inner needle, and
- a blade surface located distal of the barrel, and
- wherein an inner surface of the catheter comprises a catheter side locking surface extending in a direction traverse to the center axis of the inner needle, the catheter side locking surface being in contact with the inner needle side locking surface.
Dependencies are inferred from the claim text.