The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 2010
Filed:
Nov. 25, 2003
Kevin P. Cowan, Allison Park, PA (US);
John A. Haury, Sewickley, PA (US);
Jared E. Neff, New Kensington, PA (US);
Kevin P. Cowan, Allison Park, PA (US);
John A. Haury, Sewickley, PA (US);
Jared E. Neff, New Kensington, PA (US);
Medrad, Inc., Indianola, PA (US);
Abstract
A syringe plunger includes a wall having an inner surface and one or more inwardly projecting flanges disposed on the inner surface of the wall. Preferably, the inner surface of the wall defines a retaining shoulder formed along an axial plane thereof. An injector drive member preferably includes at least one retaining member adapted to engage the retaining shoulder of the syringe plunger to allow the drive member to retract the plunger with the body of the syringe. Further, the drive member preferably includes one or more outwardly extending flange members adapted to be engaged by the inwardly projecting flanges of the syringe plunger. When the syringe body is rotated, the at least one retaining member on the drive member is retracted and disengaged from the retaining shoulder of the syringe plunger.