Rosenberg, Klein & Bilker
Automatic safety infusion catheter needle
 An automatic safety infusion catheter needle including: a trifurcate connector having a first and a second connecting sections coaxially aligned with each other and a third connecting section serially connected with an infusion catheter; an infusion soft needle inserted on the first connecting section of the trifurcate connector; and a steel needle device including a steel needle body and a protective sleeve. A base seat of a bottom end of the steel needle body is normally resiliently and slidably latched in the protective sleeve. A top section of the protective sleeve is snugly fitted with the second connecting section of the trifurcate connector. A needle holder upward projects from the base seat of the steel needle body. A steel needle is coaxially inserted with the needle holer. The steel needle is passed through the top end of the protective sleeve and coaxially fitted in the soft needle. The needle holder is formed with guide hole for guiding a liquid medicine to smoothly flow out. In use, the soft needle together with the steel needle is thrusted into the vein of a patient and then the steel needle body is unlatched from the protective sleeve. At this time, a spring automatically resiliently restores and the steel needle body is bounded and dropped into the protective sleeve and hidden therein so as to facilitate processing of medical waste. 
A A A
A61M A61M A61M
additional inventional additional
Wen-Neng
Liu