1. Field of the Invention
The present invention relates to a medical device including a nasal delivery device for delivering a medicament in the form of a spray intranasally.
2. Description of the Related Art
Delivery of a medicament as a spray through a nasal passageway is the optimal mode of delivery for certain liquid medicaments. To accomplish this, a spray nozzle is arranged at one end of a container such as, for example, the spray nozzle disclosed in U.S. Pat. No. 7,296,566 to Alchas and U.S. Pat. No. 6,622,721 to Vedrine, et al. In these prior art devices, a user exerts pressure on a plunger to urge the liquid out of the sprayer.
To properly administer the medicament through a nasal passageway, the spray nozzle must generate a spray. To achieve a therapeutically effective spray, the plunger must be actuated at a certain speed that is sufficient. If the delivery speed of the medicament through the nozzle does not exceed the threshold speed, the liquid is ejected in a stream or drops instead of a spray. Furthermore, the inventors of the present invention have discovered that it can be difficult to ensure that the proper amount of the medicament has been delivered using the prior art devices.
USPTO Backgrounds
USPTO Backgrounds