09480797 cites 417 patents.

A plunger for use with a syringe has a plunger body with a proximal end, a distal end, and a circumferential sidewall extending between the proximal end and the distal end along a plunger longitudinal axis. The plunger further has at least one resiliently deflectable retaining member having a first segment attached to the plunger body and a second segment protruding toward the distal end of the plunger body and deflectable relative to the first segment. The plunger further has at least one actuation member associated with the at least one resiliently deflectable retaining member. The at least one actuation member interacts with a piston to deflect the at least one resiliently deflectable retaining member upon rotation of the plunger relative to the piston. The plunger is engagable with the piston regardless of a rotational orientation of the piston relative to the plunger.

Title
System and method for syringe plunger engagement with an injector
Application Number
14/925722
Publication Number
9480797 (B1)
Application Date
October 28, 2015
Publication Date
November 1, 2016
Inventor
Christopher D Capone
Pittsburgh
PA, US
James A Dedig
Pittsburgh
PA, US
Kevin P Cowan
Allison Park
PA, US
Arthur E Uber III
Pittsburgh
PA, US
Barry L Tucker
Verona
PA, US
Richard A Seman
Delmont
PA, US
Michael J Swantner
Saxonburg
PA, US
Agent
James R Stevenson
David Schramm
Joseph L Kent
Assignee
Bayer HealthCare
NJ, US
IPC
A61M 5/315
A61M 5/145
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