Patent ID: 8632500
Filing Date: 2014-01-21
Classification: A61M

Abstract:
1. A catheter instrument comprising: a catheter hub, a needle unit, and a needle tip shielding device; wherein said needle unit is provided with first connecting means for connection to said catheter hub, with second connecting means for connection to an external device, and is fixed around a rear end of a needle; wherein said catheter hub is connected to a catheter, said needle extending longitudinally within said catheter when said catheter instrument is in a ready mode and said needle unit is connected to said catheter hub; wherein said needle tip shielding device is fitted inside the catheter hub, when said catheter instrument is in the ready mode, said needle tip shielding device comprising: a body with a rear side, a front side, an outer surface connecting said rear side and said front side, a hole extending from said rear side to said front side; a resilient arm extending at an attachment point from said front side of said body; wherein said resilient arm has a resting state, from which it may be forced to yield free passage through said hole in an axial direction of said body, and any straight imaginary line extending longitudinally through said hole in the axial direction of said body coincides with said resilient arm, when said resilient arm is in said resting state; wherein said resilient arm is forced to yield free passage through said hole in the axial direction of said body by said needle when said catheter is in the ready mode; and wherein said outer surface of the needle tip shielding device is contacting an inner surface of said catheter hub in a retaining manner when said catheter instrument is in the ready mode.