US 11,717,619 B2
Hemostatic powder delivery devices and methods
John Goodman, Ann Arbor, MI (US); Alex W. Kiturkes, Bridgewater, NJ (US); and Jared Schneider, Raritan, NJ (US)
Assigned to Ethicon, Inc., Raritan, NJ (US)
Filed by Ethicon, Inc., Somerville, NJ (US)
Filed on Sep. 24, 2021, as Appl. No. 17/484,484.
Application 17/484,484 is a division of application No. 16/671,886, filed on Nov. 1, 2019, granted, now 11,154,665.
Application 16/671,886 is a continuation of application No. 15/092,712, filed on Apr. 7, 2016, granted, now 10,507,293, issued on Dec. 17, 2019.
Claims priority of provisional application 62/183,916, filed on Jun. 24, 2015.
Prior Publication US 2022/0080132 A1, Mar. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 11/00 (2006.01); A61M 13/00 (2006.01); A61M 35/00 (2006.01); A61L 26/00 (2006.01); A61B 17/34 (2006.01)
CPC A61M 11/003 (2014.02) [A61L 26/009 (2013.01); A61L 26/0023 (2013.01); A61L 26/0066 (2013.01); A61M 11/006 (2014.02); A61M 11/007 (2014.02); A61M 11/008 (2014.02); A61M 13/00 (2013.01); A61M 35/003 (2013.01); A61B 17/3423 (2013.01); A61L 2300/418 (2013.01); A61L 2300/60 (2013.01); A61L 2400/04 (2013.01); A61M 2202/064 (2013.01); A61M 2205/071 (2013.01); A61M 2205/073 (2013.01); A61M 2205/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for expressing a hemostatic powder comprising steps of:
a) positioning the hemostatic powder in an elongated hollow reservoir having a manual air pump attached to the elongated hollow reservoir and an open-ended port at a distal end of said elongated hollow reservoir, with said hemostatic powder in said elongated hollow reservoir being under a porous filter slidably disposed within the elongated hollow reservoir between said manual air pump and said open-ended port, with a spring disposed within the elongated hollow reservoir between the manual air pump and the porous filter, further comprising a step of
a1) opening by rotating a powder trap comprising a tortuous channel for the hemostatic powder having an entrance orifice open to the elongated hollow reservoir and an exit opening,
wherein said powder trap is rotatable about the elongated hollow reservoir from a first position to a second position and in the first position the entrance orifice is blocked by a blocking member within the elongated hollow reservoir and in the second position the entrance orifice is not blocked by the blocking member;
b) compressing the manual air pump thus supplying pressurized air into the elongated hollow reservoir and simultaneously compressing the spring thus exerting pressure on the porous filter and the hemostatic powder;
c) allowing the pressurized air to reach the hemostatic powder through the porous filter and to exit from the open-ended port with a portion of the hemostatic powder;
d) simultaneously advancing the porous filter towards the distal end under pressure from the spring, thus keeping the hemostatic powder compressed under the porous filter;
e) releasing the manual air pump allowing ambient air to refill the manual air pump;
f) repeating the steps (b) through (e).