| CPC A61M 25/0097 (2013.01) [A61M 25/0075 (2013.01); A61M 25/0606 (2013.01); A61M 25/0631 (2013.01); A61M 25/0693 (2013.01); A61M 2025/0078 (2013.01); A61M 2205/7536 (2013.01)] | 26 Claims |
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1. An intravenous cannula device comprising:
a catheter hub having a proximal end, a distal end, and a coaxial recess extending from the proximal end to the distal end;
a tubular valve member disposed within the coaxial recess of the catheter hub, the tubular valve member comprising:
a cylindrical portion defining a longitudinal recess; and
a distal surface comprising one or more slits that define a plurality of prongs, the one or more slits are configured to open and close upon movement of a needle therethrough;
an actuator member having an axial bore, the actuator member disposed within the longitudinal recess of the tubular valve member, wherein distal displacement of the actuator member within the catheter hub opens the plurality of prongs of the tubular valve member and forms a passage for a fluid flow from the proximal end of the catheter hub to the distal end of the catheter hub;
a valve closure member comprising a proximal end, a distal end, and a through-hole extending from the proximal end of the valve closure member to the distal end of the valve closure member, the valve closure member being disposed within the catheter hub such that the proximal end of the valve closure member abuts an undercut portion of the catheter hub and the distal end of the valve closure member abuts a distal end of the tubular valve member;
a needle guard assembly configured to push the needle distally, withdraw the needle proximally, enclose the needle therein, and reversibly couple with the proximal end of the catheter hub; and
a safety release component fixed to a distal end of the needle guard assembly, the safety release component comprising a body having a longitudinal bore extending therethrough, at least one groove defined by an outer surface of the body, and one or more moveable locking elements each configured to engage with an annular groove defined by a proximal cylindrical portion of the catheter hub,
wherein the one or more moveable locking elements are spherical and complementary to the at least one groove defined by the outer surface of the body of the safety release component, and
wherein the one or more moveable locking elements are configured to be displaced away from the at least one groove and the longitudinal bore upon insertion of the needle through the longitudinal bore such that the one or more moveable locking elements each engage with the annular groove and lock the needle guard assembly to the catheter hub.
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