Patent ID: 11931532
Assignee: BECTON, DICKINSON AND COMPANY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 7:
8. A catheter assembly comprising:
a catheter;
a needle including a distal tip and disposed within the catheter;
a catheter hub connected to the catheter having the needle passing therethrough, the catheter hub including:
an inner diameter having an undercut;
a value that selectively permits or block a flow of fluid through the catheter;
a value actuator that moves between a first position and a second position; and
a spring that returns the value actuator from the second position to the first position, wherein

a clearance fit is provided between the spring and the inner diameter;
the spring is in contact with and retained by the undercut;
the spring includes center coils and two or more end coils proximal and distal to the center coils, and
an outer diameter of the two or more end coils is greater than an outer diameter of the center coils.