SAFETY NEEDLE ASSEMBLIES AND RELATED METHODS Russian patent published in 2018 - IPC A61M5/32 

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to safety needle assemblies. Assembly comprises: a housing including a proximal end and a distal end, wherein the housing defining an interior space; a barrel is rotatably received within the interior space of the housing; needle hub is received within the proximal end of the housing; a needle extending distally from the needle hub, through the barrel, and through the distal end of the housing, wherein the needle including a sharp distal tip; a safety shield defining a lumen and being received within the interior space of the housing; wherein the safety shield extending distally from the housing through the distal end of the housing, and the needle extending through the lumen of the safety shield, wherein the sharp distal tip exposed from the safety shield in a pre-activation configuration, and a biasing member received within the barrel and extending between the needle hub and the safety shield. Safety needle assembly includes a first configuration in which the safety shield and the barrel define a first relative rotational orientation; and the safe needle assembly includes a second configuration in which the safety shield and the barrel define a second relative rotational orientation. Safety shield includes a detent that engages a notch on the barrel when the safety needle assembly occupies the first configuration. Notch includes a sloped surface proximal of the detent.

EFFECT: safety needle assembly is proposed.

21 cl, 12 dwg