A monodose nasal sprayer device, which comprises:
- a.) an elongated main housing having a distal end adapted for partial insertion into a human nasal cavity and having a proximal end adapted to receive and hold a breakable monodose medicine package-supporting central member, said elongated main housing having a spray discharge nozzle located at its distal end, said elongated main housing having medicine-receiving chamber connected to said nozzle and biased toward said breakable monodose medicine package-supporting central member;
- b.) said breakable medicine package-supporting central member being connected to said proximal end of said elongated main housing, said central member having a distal end adapted to support a breakable monodose medicine package so as to be positioned at said chamber, and having a piston shaft with a piston-engaging high friction area end and having a piston-releasing area distal end;
- c.) a piston located in said piston shaft, said piston having a medicine container breaking distal end, having a central area with a high friction engaging surface to engage said proximal end of said piston shaft and having an extended proximal end functionally connected to a firing cap;
- d.) a firing cap connected to said proximal end of said central member and being moveable toward said distal end of said central member by compressive force, said firing cap having a piston-receiving cavity and a drive spring located in said cavity, said extended proximal end of said piston being functionally connected to said spring;
- e.) finger support means located on the outside of one of said main housing and said central member;
- and,
- f.) a child resistant locking mechanism connected to at least one of said central member and said firing cap that is unlockable and, when locked, prevents movement of said firing cap toward said distal end of said central member, and permits movement of said firing cap toward said distal end of said central member when said locking member is unlocked;
- wherein the force required to overcome the frictional force between said high friction engaging surface of said piston and said piston shaft is greater than the force required to compress said spring;
- and,
- wherein a user may procure a monodose of medicine with said device when loaded with a breakable monodose medicine package by (i) moving said locking mechanism from its locked position to its unlocked position;
- (ii) placing fingers in front of the finger support means and applying compressive force against said firing cap to move said firing cap towards said central member so as to compress said spring and to move said firing cap closer toward said central member to push said piston out of said piston engaging friction area of said shaft so as to sufficiently reduce friction such that said spring automatically and with significant celerity, fires said piston and causes said distal end of said piston to puncture said breakable monodose medicine package and to drive medicine therefrom to and through said spray nozzle in a manner that is user independent as to dosage amount and dosage speed of delivery to yield a consistent, predetermined profile spray.