US 12,350,478 B2
Detection system for syringe assembly
Matthew Oshinski, Oak Ridge, NJ (US); and Ashley Rachel Rothenberg, Morris Plains, NJ (US)
Assigned to Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Appl. No. 17/600,695
Filed by Becton, Dickinson and Company, Franklin Lakes, NJ (US)
PCT Filed Apr. 1, 2020, PCT No. PCT/US2020/026111
§ 371(c)(1), (2) Date Oct. 1, 2021,
PCT Pub. No. WO2020/205929, PCT Pub. Date Oct. 8, 2020.
Claims priority of provisional application 62/828,025, filed on Apr. 2, 2019.
Prior Publication US 2022/0184321 A1, Jun. 16, 2022
Int. Cl. A61M 5/31 (2006.01); A61M 5/24 (2006.01); A61M 5/315 (2006.01)
CPC A61M 5/31568 (2013.01) [A61M 5/24 (2013.01); A61M 5/31511 (2013.01); A61M 2205/3306 (2013.01); A61M 2205/3317 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fluid container assembly, comprising:
a container barrel having a first end, a second end, and a sidewall extending therebetween and defining an interior;
a plurality of gradations located on a portion of the sidewall, the plurality of gradations each including an identifier, wherein the identifier is formed of magnetic ink, and wherein a line weight of each identifier differs from a line weight of each of the other identifiers of the plurality of gradations;
a plunger assembly having a first end, a second end, and a plunger stopper portion slidably disposed within the interior of the container barrel, the plunger stopper portion sized relative to the interior of the container barrel to provide sealing engagement with the sidewall of the container barrel; and
a sensor in communication with a portion of the plunger assembly, wherein the sensor detects the line weight of each identifier to determine a position of the plunger assembly relative to the container barrel, and wherein the sensor comprises a magnetic sensor.