Nasal medication or drug delivery devices and methods

1. A nasal delivery device for delivering a medication or drug to a nasal passageway in a metered amount, comprising: a connection adapter having a receiving portion comprising a puncturing member; one or more sealing members presented on the connection adapter; a first chamber portion, comprising a first chamber, presenting a metered amount indicator and being fluidly coupled to the connection adapter; and a second chamber portion, comprising a second chamber, having a fluid atomizing tip, the second chamber fluidly coupled to the first chamber, and the second chamber allowing for free movement and positioning relative to the first chamber to a set position along the metered amount indicator to thereby establish a selected metered dose volume jointly defined by the first chamber and the second chamber; while maintaining a liquid seal therebetween.

2. The nasal delivery device of claim 1 further comprising a positive displacement mechanism for moving liquid from at least a first external reservoir to at least one of the first and second chambers.

3. The nasal delivery device of claim 1 further comprising a universal adapter for the attachment of different vials.

4. The nasal delivery device of claim 1 configured for movement of at least one of the first chamber and the second chamber for adjustment of the metered dose volume.

5. The nasal delivery device of claim 1 further configured to allow for particle separation of a liquid substance in specific target particle size.

6. The nasal delivery device of claim 1 further comprising at least one anti-backflow membrane preventing backflow of liquids into the at least first chamber or from an external source into the at least first chamber or the second chamber.

7. The nasal delivery device of claim 1 further comprising a seal puncture mechanism for extraction of liquid from one external reservoir to the at least first chamber within the device.

8. The nasal delivery device of claim 1 configured to separately receive multiple different nose cone attachments.

9. The nasal delivery device of claim 1 designed for at least one of single-use disposable and multiple uses.

10. A nasal dose delivery device comprising first and second telescoping dose container chamber portions configured to rotatably telescope to establish a selected dose volume and being further configured to slidingly telescope to deliver the selected dose volume; and

further comprising a threaded slider ring interposed between the first and second telescoping dose container chamber portions and configured such that relative rotation between the first and second telescoping dose container chamber portions adjusts a dose volume jointly defined by the first and second telescoping dose container chamber portions and wherein the threaded slider ring is further configured to be lockable in a first position during relative rotation between the first and second telescoping dose container chamber portions and unlockable to allow telescopic sliding between the first and second telescoping dose container chamber portions to deliver the selected dose volume.

11. The nasal dose delivery device of claim 10 , further comprising a 360-degree rotational vial adapter and a vial piercer in fluid communication with the first and second telescoping dose container chamber portions to fill the selected dose volume with medicine from a vial.

12. The nasal dose delivery device of claim 10 , configured for attachment of multiple vials for titration of multiple substances prior to delivery.