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US 12,670,809 B2Granted
Patient training device for use with a safety syringe injector
AssigneeMerck Sharp & Dohme Corp.
InventorsJohn B. Cline, Cassie Megna, Wail Rasheed
Life of this patent
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AssigneeMerck Sharp & Dohme Corp.
InventorsJohn B. Cline, Cassie Megna, Wail Rasheed
Estimating the term…
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.
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.
Dependencies are inferred from the claim text.