Safety needle assembly
First Claim
Patent Images
1. A needle assembly engageable to a fluid delivery device, comprising:
- a hub holding a needle, the hub having a hollow interior for communicating a central lumen of the needle with the fluid delivery device;
a retractable tube lock attachable to the hub, the retractable tube lock having a distal locking projection on an actuating latch communicating with an opening of a stationary tube, the stationary tube having a hollow interior housing a retractable hollow tube, the retractable hollow tube axially movable from an extended position to cover the needle, to a retracted position to expose the needle, the movement controlled by engagement and disengagement of the distal locking projection of the retractable tube lock with the retractable hollow tube.
0 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a needle shield assembly attachable to a syringe body or other fluid delivery system to protect a user from accidental and unintentional puncture. The safety needle assembly is commonly mounted to a syringe body, preferably by a luer lock adapter, or to other fluid delivery devices used in the medical field. The present invention resides in the use of a retractable tube lock that dictates the covering and uncovering of the sharp tip of a needle or a blunt tip of a cannula by communicating with a stationary hollow tube which houses a retractable hollow tube that axially slips in and out of the stationary tube.
-
Citations
18 Claims
-
1. A needle assembly engageable to a fluid delivery device, comprising:
-
a hub holding a needle, the hub having a hollow interior for communicating a central lumen of the needle with the fluid delivery device; a retractable tube lock attachable to the hub, the retractable tube lock having a distal locking projection on an actuating latch communicating with an opening of a stationary tube, the stationary tube having a hollow interior housing a retractable hollow tube, the retractable hollow tube axially movable from an extended position to cover the needle, to a retracted position to expose the needle, the movement controlled by engagement and disengagement of the distal locking projection of the retractable tube lock with the retractable hollow tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A method for covering and uncovering a needle or a cannula using a needle assembly having a retractable tube lock that engages and disengages a retractable hollow tube housed within a stationary tube, comprising:
-
(a) releasing a locking projection of the retractable tube lock from contact with a proximal edge of the retractable hollow tube while the needle assembly is in an upright position to uncover the needle or cannula; (b) recontacting the locking projection with a side surface of the retractable tube to keep the needle or cannula uncovered; (c) releasing the locking projection from contact with the retractable hollow tube after usage; (d) inverting the needle assembly in such position as to freely drop the retractable hollow tube from the stationary hollow tube, by gravity, thereby covering the needle or cannula; and (d) keeping the needle or cannula covered prior to discard by recontacting the proximal edge of the retractable hollow tube with the locking projection. - View Dependent Claims (18)
-
Specification