US 12,011,552 B2
Dual-stage syringes for independent delivery of two or more fluids
Oladipo Peter Akerele-Ale, Tempe, AZ (US); Casey Tyler Hebert, Tempe, AZ (US); Amanda Kingman, Phoenix, AZ (US); Alex Palmer, Scottsdale, AZ (US); Bill Parmentier, Franklin Lakes, NJ (US); Brandon David Simmons, Tempe, AZ (US); and Mark Nicholas Wright, Gilbert, AZ (US)
Assigned to Bard Peripheral Vascular, Inc., Tempe, AZ (US)
Appl. No. 17/056,034
Filed by Bard Peripheral Vascular, Inc., Tempe, AZ (US)
PCT Filed May 17, 2019, PCT No. PCT/US2019/032983
§ 371(c)(1), (2) Date Nov. 17, 2020,
PCT Pub. No. WO2019/222699, PCT Pub. Date Nov. 21, 2019.
Claims priority of provisional application 62/673,628, filed on May 18, 2018.
Claims priority of provisional application 62/673,632, filed on May 18, 2018.
Prior Publication US 2021/0213301 A1, Jul. 15, 2021
Int. Cl. A61M 25/01 (2006.01); A61K 51/12 (2006.01); A61M 5/178 (2006.01); A61M 5/19 (2006.01); A61M 5/31 (2006.01); A61M 5/315 (2006.01); A61M 25/00 (2006.01); A61M 25/09 (2006.01); A61N 5/10 (2006.01); G16H 20/17 (2018.01)
CPC A61M 25/0147 (2013.01) [A61K 51/1241 (2013.01); A61M 5/1785 (2013.01); A61M 5/19 (2013.01); A61M 5/3129 (2013.01); A61M 5/31571 (2013.01); A61M 25/0021 (2013.01); A61M 25/09 (2013.01); A61N 5/1002 (2013.01); A61N 5/1007 (2013.01); G16H 20/17 (2018.01); A61M 2025/0042 (2013.01); A61M 2025/09075 (2013.01); A61M 2025/09166 (2013.01); A61M 2205/14 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/50 (2013.01); A61M 2206/11 (2013.01); A61N 2005/1019 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A sleeved dual-stage syringe comprising:
an external barrel having an primary chamber defined through the external barrel from a proximal opening of the external barrel to a distal opening of the external barrel;
a primary piston having a secondary chamber defined through the primary piston from a proximal opening of the primary piston to a sealed distal end of the primary piston, the primary piston configured to receive a secondary piston through the proximal opening of the primary piston, the secondary piston including, at a secondary piston distal end, a piercing end configured for piercing the sealed distal end of the primary piston; and
a locking sleeve disposed within the primary chamber,
wherein:
the primary piston and the locking sleeve comprise a locking mechanism configured to define a first boundary, a second boundary distal to the first boundary, and at least three stages, the at least three stages comprising:
an initial stage wherein the primary piston is inserted proximal to the first boundary and is freely movable distally or proximally;
an intermediate stage wherein the primary piston is inserted distal to the first boundary and is prevented from moving proximally beyond the first boundary; and
a final stage wherein the primary piston is inserted distal to the second boundary and is prevented from moving proximally beyond the second boundary.