Fail safe point protector for needle safety flap
A method and device are disclosed for preventing a needle stick hazard in the event of a collapse of a protective needle flap of a portable drug pump. The device may include a needle guide, a secure space and/or a shield. A point of a needle is optionally deflected into a secure space upon collapse of the protective flap. The space may optionally be shielded. Optionally, the support linking the needle to the pump may pivot and/or translate. Optionally, there may be an exposing position wherein the needle protrudes through an opening in the flap. Optionally, the opening may be non-circular.
1. An injection apparatus wearable by a recipient for delivering a drug to the recipient, the injection apparatus comprising:
a housing having a base, the base engaging skin of the recipient during injection;
a generally linear needle having a needle point projecting from the housing;
a flap pivotably mounted to the base of the housing, the flap including a bottom wall and a clip extending therefrom, a secure space located between the clip and bottom wall, the flap having:
an exposed position, generally co-planar with the base, wherein at least the needle point is aligned with and protrudes through an aperture in the flap,
a protecting position, wherein the flap is pivoted away from the exposed position in a direction away from the base of the housing and covers the needle point, such and the needle point is positioned between said flap and said base and is not aligned with the aperture, and
a collapsed position, wherein the flap is pivoted toward the base of the housing from the protecting position to a position in between the protecting and exposed positions;
wherein upon pivoting of the flap from the protecting position to the collapsed position, the flap moves the needle point into the secure space within the flap, and
wherein the flap further includes at least one barrier wall extending toward the base positioned to prevent the needle from twisting sideward beyond the barrier wall during pivoting of the flap from the protecting position to the collapsed position, thereby preventing re-exposure of the needle point beyond the flap.
2. The injection apparatus of claim 1 , wherein the at least one barrier wall comprises two parallel barrier walls projecting from the flap and defining a channel therebetween, a longitudinal axis of the needle being positioned between the two barrier walls.
3. The injection apparatus of claim 1 , further comprising a guide attached to the flap, the guide being positioned relative to the needle point such that upon pivoting of the flap from the protecting position to the collapsed position the guide bends the needle to a non-linear orientation, thereby deflecting the needle point into the secure space within the flap.
4. The injection apparatus of claim 1 , further comprising a biasing device positioned between the flap and the housing for moving the flap from the exposed position to the protecting position.