Needle assembly with safety system for a syringe or fluid sampling device and method of making and using the same
Needle assembly having the following modes of operation; a first mode wherein the safety shield can move to a first retracted position allowing injection of the piercing portion of needle from a position at least partially covering the piercing portion of the needle and a second mode wherein the safety shield moves to a position protecting the piercing portion of the needle after the first mode and is prevented from moving back to a position exposing the piercing portion of the needle.
1. A needle assembly connectable to an injection device, the needle assembly comprising:
a body;
a luer-lock interface arranged on a rear side of the body;
a needle for injecting or withdrawing fluids;
the needle having a portion retained in the body and a piercing portion projecting forwardly from the portion retained in the body;
a safety shield that is axially movable relative to the body at least between an initial position, an at least partially retracted position, and a post-use locking position; and
a spring biasing the safety shield away from the at least partially retracted position,
wherein the safety shield:
locks in the post-use locking position via an internal locking system, wherein the internal locking system is prevented from being contacted by a user's fingers; and
rotates at least partially as it moves from the initial position to the at least partially retracted position; and
wherein the needle assembly has the following modes of operation when installed on an injection device:
a first mode wherein the safety shield can move to a first retracted position during injection of the piercing portion of the needle into a container containing a substance that can be suctioned into the injection device;
a second mode wherein the safety shield moves to a position protecting the piercing portion of the needle after the first mode;
a third mode wherein the safety shield can move to a second retracted position during injection of the piercing portion of the needle into a surface that will receive the substance forced out of the injection device; and
a fourth mode wherein the safety shield moves to a position protecting the piercing portion of the needle after the third mode.
2. The needle assembly of claim 1 , wherein in the second mode the safety shield automatically moves to the position protecting the piercing portion of the needle after the first mode.
3. The needle assembly of claim 1 , wherein in the fourth mode, the safety shield is locked in the position protecting the piercing portion of the needle so as to prevent re-use or re-injection of the needle.
4. The needle assembly of claim 1 , wherein in the fourth mode the safety shield automatically moves to the position protecting the piercing portion of the needle after the third mode.
5. The needle assembly of claim 1 , wherein in the fourth mode, the safety shield is locked in the position protecting the piercing portion of the needle so as to prevent re-use or re-injection of the needle.
6. The needle assembly of claim 1 , wherein when in the fourth mode, the safety shield is prevented from moving back to a position exposing the piercing portion of the needle.
7. The needle assembly of claim 1 , wherein the surface that will receive the substance forced out of the injection device is a skin surface.
8. The needle assembly of claim 1 , wherein the needle assembly can be removably installed on the injection device.
9. A needle assembly connectable to an injection device, the needle assembly comprising:
a body;
a luer-lock interface arranged on a rear side of the body;
a needle for injecting or withdrawing fluids;
the needle having a portion retained in the body and a piercing portion projecting forwardly from the portion retained in the body;
a safety shield that is axially movable relative to the body at least between an initial position, an at least partially retracted position, and a post-use locking position; and
a spring biasing the safety shield away from the at least partially retracted position,
wherein the safety shield:
locks in the post-use locking position via an internal locking system, wherein the internal locking system is prevented from being contacted by a user's fingers; and
rotates at least partially as it moves from the initial position to the at least partially retracted position; and
wherein the needle assembly has the following modes of operation when installed on an injection device:
a first mode wherein the safety shield can move to a first retracted position during injection of the piercing portion of the needle into a container containing a substance that can be suctioned into the injection device;
a second mode wherein the safety shield moves to a position protecting the piercing portion of the needle after the first mode;
a third mode wherein the safety shield moves to a position protecting the piercing portion of the needle after the second mode;
a fourth mode wherein the safety shield can move to a second retracted position during injection of the piercing portion of the needle into a surface that will receive the substance forced out of the injection device; and
a fifth mode wherein the safety shield moves to a position protecting the piercing portion of the needle after the fourth mode and is prevented from moving back to a position exposing the piercing portion of the needle.
10. The needle assembly of claim 9 , wherein in the second mode the safety shield automatically moves to the position protecting the piercing portion of the needle after the first mode.
11. The needle assembly of claim 9 , wherein in the fourth mode, the safety shield is locked in the position protecting the piercing portion of the needle so as to prevent re-use or re-injection of the needle.
12. The needle assembly of claim 9 , wherein in the fourth mode the safety shield automatically moves to the position protecting the piercing portion of the needle after the third mode.
13. The needle assembly of claim 9 , wherein in the fourth mode, the safety shield is locked in the position protecting the piercing portion of the needle so as to prevent re-use or re-injection of the needle.
14. The needle assembly of claim 9 , wherein when in the fourth mode, the safety shield is prevented from moving back to a position exposing the piercing portion of the needle.
15. The needle assembly of claim 9 , wherein the surface that will receive the substance forced out of the injection device is a skin surface.
16. The needle assembly of claim 9 , wherein the needle assembly can be removably installed on the injection device.