Safety catheter
A device and method for positioning a catheter to establish a fluid access site into the vasculature of a patient includes a luer assembly having a cannula or catheter, a shuttle assembly having a stylet for stiffening the catheter, and a holder assembly having an actuator for providing controlled retraction into a handle. The safety catheter comprises a flash window that allows a clinician to view when the vasculature of a patient has been properly accessed and to confirm that the stylet has been fully retracted into a safe position.
1. A safety catheter for use with a patient which comprises:
an elongated handle defining an axis and having a proximal end and a distal end, wherein the handle is formed with an internal chamber and has a plurality of resilient fingers extending parallel to the axis in a distal direction from the handle;
a luer assembly for establishing a site for fluid access into the vasculature of the patient;
a shuttle assembly, wherein the shuttle assembly is mounted for axial movement on the handle from a first location to a second location, with the luer assembly fitted onto the handle to urge the fingers thereof against the shuttle assembly to hold the shuttle assembly at the first location; and
an actuator mounted on the handle for movement between a proximal position and a distal position, wherein the actuator is formed with a base member having a plurality of rails extending distally therefrom and having at least one living hinge positioned outwardly therefrom, wherein during a forced movement of the actuator from its proximal position to its distal position, the base member holds the fingers of the handle against the shuttle assembly and the living hinge is compressed to bias the actuator for a return back toward its proximal position, and the rails push on the luer assembly to separate the luer assembly from the shuttle assembly, and wherein upon removal of the force from the actuator, the living hinge returns the actuator back to its proximal position to remove the base member from the fingers and to release the fingers of the handle from the shuttle assembly to separate the handle and the shuttle assembly from the luer assembly for retracting the shuttle assembly to its second location inside the chamber.
2. A safety catheter as recited in claim 1 wherein the base member overides the resilient fingers of the handle when the actuator is moved from its proximal position to its distal position.
3. A safety catheter as recited in claim 1 wherein the living hinge includes a pair of arms, and wherein the bias of the living hinge is created when the arms are forced toward each other during a movement of the actuator toward its distal position.
4. A safety catheter as recited in claim 1 further comprising a pad mounted on the base member for moving the actuator from its proximal position to its distal position.
5. A safety catheter as recited in claim 1 further comprising a spring for biasing the shuttle assembly into the internal chamber of the handle.
6. A safety catheter as recited in claim 5 wherein the spring is compressed between the shuttle assembly and the handle when the actuator is in the distal position.