Patient training device for use with a safety syringe injector
The present invention provides reusable safety syringe devices for use as a teaching and practice tool. The safety syringe device of the present invention comprises four primary parts: (1) a first tubular member; (2) a second tubular member disposed within an inner annular cavity of the first tubular member; (3) a syringe secured within an inner annular cavity of the second tubular member; and (4) a plunger rod, wherein the plunger rod comprises a proximal end and a distal end, wherein the proximal end and distal end are connected by a shaft, wherein the proximal end comprises a first plunger rod flange having a first diameter and a removable second plunger rod flange having a second diameter, wherein the first diameter is smaller than the second diameter and the first plunger rod flange is located below the second plunger rod flange on the shaft.
1 . A plunger rod for use with a safety syringe comprising a proximal end and a distal end, wherein the proximal end and distal end are connected by a shaft, wherein the proximal end comprises a first plunger rod flange having a first diameter and a second plunger rod flange having a second diameter, and wherein the first diameter is smaller than the second diameter and the first plunger rod flange is positioned distal to the second plunger rod flange, wherein the first plunger rod flange and second plunger rod flange are connected by a living hinge, string or lanyard.
2 . The plunger rod of claim 1 , wherein the second plunger rod flange is removable from the first plunger rod flange.
3 . The plunger rod of claim 1 , wherein the second plunger rod flange has a proximal side and a distal side, wherein the second plunger rod flange comprises a peg that extends from the distal side, wherein the first plunger rod flange has a proximal side and a distal side and wherein the first plunger rod flange comprises a port located on the proximal side of the first plunger rod flange for receiving the peg.
4 . The plunger rod of claim 3 , wherein the peg that extends from the distal side of the second plunger rod flange has a circular cross section.
5 . The plunger rod of claim 3 , wherein the peg that extends from the distal side of the second plunger rod flange has a non-circular cross section.
6 . The plunger rod of claim 3 , wherein the peg and the port are connected by a threaded engagement.
7 . The plunger rod of claim 3 , wherein the plunger rod further comprises a compressible spacer between the first plunger rod flange and the second plunger rod flange.
8 . The plunger rod of claim 3 , wherein the spacer comprises memory foam.
9 . The plunger rod of claim 3 , wherein the spacer is a collapsible or foldable spacer.