Details for Patent: 8,287,489

Title:	Device for readying a needle free injector for delivery
Abstract:	A needle-free injector device comprising a latch having a safe position which disables the triggering of the device, and a ready position which restrains movement of a dispensing member but enables triggering and a triggered position which permits movement of the dispensing member is disclosed. An additional safety mechanism blocks the triggering of the device until removed. A cap is provided to maintain the sterility and stability of the drug formulation and is configured such that the cap removal is required prior to placing the device in a ready to trigger state.
Inventor(s):	Schuster; Jeffrey A. (Oakland, CA), Bridges; Paul Stuart (Menlo Park, CA), Gibbins; Graham (Emeryville, CA), Reid; Nicola (Emeryville, CA)
Assignee:	Zogenix, Inc. (Emeryville, CA)
Filing Date:	Jun 16, 2010
Application Number:	12/816,977
Claims:	1. A needle-free injector comprised of a drug capsule, a compressed gas, a piston and an injector orifice; comprising: a cap covering the injection orifice of the injector; and a mechanism for changing the injector from a safe position to a ready position to a triggering position; wherein the cap is broken off before the injector is placed in the ready to deliver state. 2. The device as claimed in claim 1, wherein the mechanism for changing the injector from the safe position to the ready position comprises a latch and wherein the device further comprises a mechanism for moving the latch from a latch safe position to a latch ready position, wherein the mechanism for moving the latch comprise a pin and a means for actuating the pin, wherein, upon actuating the pin, the pin pushes the latch from the latch safe position to the latch ready position. 3. The device as claimed in claim 2, wherein the means for actuating the pin comprises a lever movable from a lever safe position to a lever ready position, and a collar at least partially encircling the injector, wherein actuating the lever moves the collar which moves the pin against the latch wherein the latch is moved from the latch safe position to the latch ready position. 4. The device as claimed in claim 3, wherein the mechanism for changing the injector from the safe position to the ready position to a triggering position, further comprises: an additional safety mechanism to prevent triggering of the injector; wherein moving of the lever from the lever safe position to the lever ready position moves the collar; and wherein the additional safety mechanism is disengaged when the collar moves under the action of the lever moving from the lever safe position to the lever ready position. 5. The device as claimed in claim 4, wherein the additional safety mechanism is configured in a block shape to prevent triggering of the device by blocking the relative movement of components that cause the device to change from the ready position to the triggering position. 6. The device as claimed in claim 3, wherein moving of the lever exposes a button, wherein pressing of the button causes delivery of the injector contents. 7. The device as claimed in claim 3, wherein the lever is movable only after the cap is removed, wherein rotating the lever places the injector in the ready position. 8. The device of claim 3, wherein the end of the lever is attached to the cap, and a base of the lever actuates a safety mechanism. 9. The device of claim 3, configured such that when the cap is removed, the end of the lever is exposed, allowing the lever to pivot, thereby placing the device in the ready position. 10. The device as claimed in claim 3, wherein the mechanism for changing the injector from the safe position to the ready position, further comprises: an additional safety mechanism to prevent triggering of the injector wherein the additional safety mechanism is disengaged when the lever is actuated.