Pen needle with safety shield system

摘要

A needle tip for an injection device includes a body having a front portion, a back portion configured to be removably connected to the pre-loaded injection device, and a wall separating the front and back portions. A hollow needle has a first piercing portion projecting back from the separating wall and a second piercing portion projecting forward from the separating wall. A safety shield that is axially movable relative to the body at least between an initial position, a retracted position, and a post use locking position. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

主权项

1. A needle tip for a pre-loaded injection device comprising:
a body having a front portion, a back portion configured to be removably connected to the pre-loaded injection device, and a separating wall separating the front and back portions; a hollow needle having a first piercing portion projecting back from the separating wall and a second piercing portion projecting forward from the separating wall; a safety shield that is axially movable relative to the body between an initial position, a retracted position, and a post use locking position; and the safety shield having a first portion extending at least partially into an internal space located within the front portion when the safety shield is in the initial position, wherein the safety shield is each of:
retained in the initial position wherein a puncturing end of the second piercing portion is exposed; andprevented from retracting fully into the internal space located within the front portion.