Medicant delivery system
An improved medicant delivery system 100 is disclosed wherein the carrier for the medicant is a fluid that can be atomized or vaporized by exposure to heat. The system provides for repeatable dose of medicant, can be stored in any orientation, and/or has an ability to maximize energy efficiency.
1. A hand-held medicant delivery device, comprising:
a. a housing having a first end and a second end;
b. a mouthpiece attached to the first end;
c. a fluid delivery system;
d. a vaporization system, comprising a heating element in between the mouthpiece and the fluid delivery system; and
e. a power control system, comprising a circuit configured to provide a precise amount of power from a power source to heat the heating element to a minimum required temperature to completely vaporize a precise volume of a liquid, control a precise duration of time to supply the precise amount of power to completely vaporize the predetermined volume of the liquid at the required temperature, monitor a temperature of the heating element while the power is being supplied, compare the temperature of the heating element to the minimum required temperature, and adjust the precise duration of time or the precise amount of power based on the comparison step to completely vaporize the liquid, wherein if the precise volume of liquid is adjusted, the precise duration of time or the precise amount of power is adjusted to completely vaporize the adjusted precise volume of liquid within a new minimum required temperature for a new minimum required time.
2. The hand-held medicant delivery device of claim 1 , wherein the control system comprises a one-shot circuit.
3. The hand-held medicant delivery device of claim 1 , wherein the circuit comprises a processor that is programmed to monitor a resistance of the heating element and adjust the power until the heating element reaches the required temperature.
4. The hand-held medicant delivery device of claim 1 , wherein the control system comprises a DC/DC boost converter operatively connected to a supercapacitor.
5. The hand-held medicant delivery device of claim 1 , wherein the circuit comprises a processor programmed to actuate the power source a predetermined number of times.
6. The hand-held medicant delivery device of claim 1 , wherein the power source is an alkaline battery.
7. The hand-held medicant delivery device of claim 1 , wherein the fluid delivery system, comprises:
a. a fluid reservoir inside the housing, the fluid reservoir having a first end and a second end; and
b. a pressure generator positioned inside the fluid reservoir at the second end and configured to advance towards the first end incrementally at a fixed and discrete distance to consistently meter a precise volume of a liquid from the fluid reservoir.
8. The hand-held medicant delivery device of claim 7 , wherein the fluid delivery system further comprises a cap in fluid communication with the fluid reservoir at the first end, the cap having an outlet opposite the fluid reservoir, wherein the liquid stored inside the fluid reservoir can exit through the outlet when a positive pressure is applied to the fluid reservoir to form a droplet at the outlet.
9. The hand-held medicant delivery device of claim 8 , wherein the outlet and the heating element are separated by a distance smaller than the droplet, such that the droplet can contact the heating element while still on the outlet.
10. The hand-held medicant delivery device of claim 8 , wherein the pressure generator comprises: a. a piston housed inside the fluid reservoir configured to push the liquid out through the cap; and b. a fluid discharge actuator operatively connected to the piston, wherein actuation of the fluid discharge actuator causes the piston to advance the fixed and discrete distance towards the first end.
11. The hand-held medicant delivery device of claim 7 , further comprising a permeable membrane positioned between the mouthpiece and the heating element, wherein the permeable membrane is permeable to vapor molecules of a predetermined size.