Intravascular catheter device

A catheter device (1) having an axis A-A, a lower (L) side adapted to face a patient, and an upper side (U) opposite the lower side adapted to face away from the patient, said catheter device (1) comprising a catheter (2) and a hypodermic introducer needle (3),

• the catheter (2) comprising an axially elongated housing (4) having a proximal open end (5) adapted to receive a coupling mechanism or a plug, said housing (4) further comprising an internal passage (6), a connecting port (7) with an internal orifice (8) arranged on the upper side of the catheter (2), protrusion members (15) on an outer surface of the proximal open end (5), and said catheter (2) further comprising a flexible catheter tube (12) connected to the axially elongated housing (4), said flexible catheter tube (12) comprising a distal tip end (13) and a lumen (14), said lumen (14) being in fluid communication with the internal passage (6) of the housing (4);
• the hypodermic introducer needle (3) comprising a proximal head (16), a hollow needle (17) having a distal beveled tip (18), an extended portion (19) connecting the hollow needle (17) with the proximal head (16) and adapted to engage with the proximal open end (5) of the catheter (2) when the hypodermic introducer needle (3) is inserted into the catheter (2), said head (16) comprising an axial channel (20) in fluid communication with an interior of the hollow needle (17), a grip plate (21) arranged on the proximal head (16) and extending in a direction perpendicular to an axial direction, and an engagement member (22) arranged on the grip plate (21) and protruding distally from said grip plate (21),
• said catheter (2) and hypodermic introducer needle (3) being arranged such that when the needle (3) is inserted into the catheter (2), the grip plate (21) is directed towards the upper side (U) of the catheter (2) and aligned with the connection port (7), and wherein the protrusion members (15) on the proximal open end (5) of the catheter (2) are adapted to engage with the engagement member (22) on the grip plate (21) to prevent the hypodermic introducer needle (3) from rotating around the axis A-A in relation to the catheter (2),
• wherein the extended portion (19) of the needle (3) is provided with ribs (23, 23a) that circumvent the extended portion (19) radially from the axis A-A, and wherein the proximal open end (5) of the catheter (2) is provided with a locking flange (25), adapted to engage with the ribs (23, 23a) on the extended portion (19) of the hypodermic introducer needle (3) upon distal motion of the catheter (2) in relation to said needle (3).