US 11,911,560 B2
Devices and methods for delivering dry powder medicaments
Eric C. Richardson, Cave Creek, AZ (US); Gilbert S. Mott, Jr., Durham, NC (US); and William James Alexander, Cary, NC (US)
Assigned to CONCENTRX PHARMACEUTICALS, INC., Durham, NC (US)
Filed by CONCENTRX PHARMACEUTICALS, INC., Durham, NC (US)
Filed on Nov. 16, 2021, as Appl. No. 17/527,290.
Application 17/527,290 is a continuation of application No. 16/598,648, filed on Oct. 10, 2019, granted, now 11,185,647.
Application 16/598,648 is a continuation of application No. 15/938,766, filed on Mar. 28, 2018, granted, now 10,456,537, issued on Oct. 29, 2019.
Claims priority of provisional application 62/477,506, filed on Mar. 28, 2017.
Prior Publication US 2022/0143334 A1, May 12, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 15/00 (2006.01); A61K 9/00 (2006.01)
CPC A61M 15/0086 (2013.01) [A61K 9/0075 (2013.01); A61M 15/002 (2014.02); A61M 15/0008 (2014.02); A61M 15/0028 (2013.01); A61M 15/0043 (2014.02); A61M 15/0021 (2014.02); A61M 2202/064 (2013.01); A61M 2205/584 (2013.01); A61M 2206/16 (2013.01); A61M 2206/20 (2013.01); A61M 2209/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a first member defining at least a first portion of a disaggregation chamber containing a dry powder, the first member including a raised surface along a center axis of the disaggregation chamber; and
a second member coupled to the first member, the second member including a surface covering the disaggregation chamber, the second member defining an intake channel and an exit channel, the intake channel fluidically coupled to the disaggregation chamber via an intake port, the exit channel fluidically coupled to the disaggregation chamber via an exit opening defined by the surface of the second member, at least one of the first member or the second member including a spacer to maintain a distance between the raised surface and the exit opening, the intake channel includes a tortuous path to limit movement of the dry powder from the disaggregation chamber through the intake channel.