US 12,440,623 B2
Assemblable compact syringe with side mounted plunger rod
George Robert Halvorsen, Jr., San Diego, CA (US); Ian Speers, Washington, DC (US); and Ryan Stinebaugh, Homestead, PA (US)
Assigned to Pacto Medical Inc., Homestead, PA (US)
Filed by Pacto Medical Inc., Homestead, PA (US)
Filed on Feb. 29, 2024, as Appl. No. 18/591,453.
Claims priority of provisional application 63/487,680, filed on Mar. 1, 2023.
Prior Publication US 2024/0293623 A1, Sep. 5, 2024
Int. Cl. A61M 5/315 (2006.01); A61M 5/31 (2006.01)
CPC A61M 5/31515 (2013.01) [A61M 2005/3142 (2013.01); A61M 2207/10 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A syringe comprising:
a syringe body having a distal end, a proximal end, and a barrel between the distal end and the proximal end and having a barrel wall defining an interior volume, the syringe body further defining a first opening at the distal end for dispensing and a second opening at the proximal end;
a stopper disposed inside the barrel and configured to seal the interior volume; and
a plunger rod disposed outside the syringe body, the plunger rod having a first end, a second end, and a middle section, the middle section disposed along the barrel wall,
wherein the second end of the plunger rod is reversibly attached to the distal end of the syringe body,
the second end of the plunger rod comprises a plunger flange having a cutout and is configured to circumferentially encircle at least partially but less fully and engage the distal end of the syringe body in a retaining manner through the cutout of the plunger flange,
the syringe body comprises a barrel flange on the proximal end, the plunger rod defines a concave portion in the first end, wherein the concave portion is a notch normal to the middle section of the plunger rod, and is configured to accept and retain a portion of the barrel flange of the syringe body and encompass a portion of the second opening, and a surface of the notch extends along the barrel flange and partially covers the second opening, and
the plunger rod is configured to be fully removable from the syringe body during use and assembled by a user so as to drive the stopper in a direction from the proximal end to the distal end of the syringe body.