Auto-injection device

Abstract

The present application discloses a device that is designed to inject into a user medicinal or non-medical substance upon activation. The device is light and compact, suitable for wearing or carrying by a user. The device comprises a needle, a syringe, and two sets of springs. The syringe comprises a plunger and a chamber for storing an injection substance. The needle is configured to be coaxial and in communication with the syringe. Each set of springs may comprise one or more springs. The first set of springs is configured to push the needle and the second set of springs is configured to move the plunger. In one exemplary embodiment, the device is enclosed in a sealed case and the device may be made to resemble a watch.

1 . An auto-injection device comprising:
 a syringe comprising a plunger and a chamber for storing a substance to be injected;   a needle connected to the syringe;   a first set of springs coupled to the syringe and configured to push the syringe for moving the needle; and   a second set of springs coupled to the plunger and configured to push the plunger;   
       wherein each of the first and the second set of springs comprises one or more springs, and wherein the syringe is configured to compress the first set of springs when the syringe rests on one or more cantilevers. 
     
     
         2 . The auto-injection device of  claim 1 , further comprising a casing for housing the needle, the syringe, the first set of springs, and the second set of springs. 
     
     
         3 . The auto-injection device of  claim 1 , wherein each of the first and the second set of springs comprises a compressed state and a released state, wherein the first set of springs is configured to push the needle outside of the casing when entering into the released state. 
     
     
         4 . The auto-injection device of  claim 3 , wherein, upon the first set of springs being released, the second set of springs is released from its compressed state and drives the plunger to inject the substance stored in the chamber. 
     
     
         5 . The auto-injection device of  claim 1 , further comprising a first activator configured to activate the auto-injection device and to release the first set of springs. 
     
     
         6 . (canceled) 
     
     
         7 . The auto-injection device of  claim 5 , wherein the first activator is configured to move the syringe off the cantilevers to release push the one or more cantilevers to set off the first set of springs, and wherein when the first set of springs is released, the first set of springs pushes the needle. 
     
     
         8 . The auto-injection device of  claim 5 , further comprising a second activator configured to release the second set of springs. 
     
     
         9 . The auto-injection device of  claim 8 , wherein the second activator is activated by the first set of springs. 
     
     
         10 . The auto-injection device of  claim 9 , wherein, the second activator releases the second set of springs from the compressed state to the released state, and wherein the second set of springs drives the plunger of the syringe to inject the substance stored in the chamber. 
     
     
         11 . The auto-injection device of  claim 8 , wherein the second activator comprises:
 a tube configured with one or more cross-holes in the wall of the tube;   a pin inside the tube, wherein the pin is configured to move from an inserted position to a pulled-up position; and   a moveable object situated inside the cross-holes, wherein the size of the moveable object is larger than the thickness of the wall of the tube;   
       wherein, when the pin is in the inserted position, the moveable object is pushed by the pin to extrude outside the tube and act as a stopper to hold the second set of springs in the compressed state; 
       wherein, when the pin is in the pulled-up position, the moveable object is configured to move along the cross-holes to release the second set of the springs. 
     
     
         12 . The auto-injection device of  claim 11 , wherein when the pin is in the pulled-up position, the second set of springs is released to push the plunger and to inject the stored sub stance. 
     
     
         13 . The auto-injection device of  claim 2 , further comprising a casing for housing the needle, the syringe, the first set of springs, and the second set of springs, wherein the casing comprises a revolving sheath, the revolving sheath configured to move from a closed position to an open position; and
 wherein, when in the closed position, the revolving sheath rests on the casing and, when in the open position, the revolving sheath blocks the needle.   
     
     
         14 . The auto-injection device of  claim 13 , wherein the revolving sheath is attached to the casing via a revolving peg. 
     
     
         15 . The auto-injection device of  claim 1 , further comprising a protective needle cover to prevent the needle from contamination. 
     
     
         16 . The auto-injection device of  claim 2 , wherein the casing is sealed to prevent the needle from being contaminated. 
     
     
         17 . The auto-injection device of  claim 2 , wherein the casing comprises one or more lugs to connect straps for wearing. 
     
     
         18 . The auto-injection device of  claim 17 , wherein the auto-injection device is a wrist-mounted wearable device. 
     
     
         19 .- 23 . (canceled)