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Nasal delivery device

  • US 6,715,485 B1
  • Filed: 11/15/2000
  • Issued: 04/06/2004
  • Est. Priority Date: 03/03/1999
  • Status: Expired due to Term
First Claim
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1. A nasal delivery device for delivering a substance to the nasal airway of a subject, comprising:

  • a closure unit for causing the closure of the oropharyngeal velum of the subject; and

    a delivery unit for delivering a gas flow entraining a substance to one of the nostrils of the subject at a driving pressure which would be such as to cause the gas flow to flow around the posterior margin of the nasal septum and out of the other nostril of the subject, wherein the delivery unit comprises a nosepiece which includes an outlet through which the gas flow is in use delivered to the one nostril and a sealing member for providing a fluid tight seal between the outlet and the one nostril.

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