US 12,064,605 B2
Syringe with flat indicia display surface
Thomas J. Shaw, Frisco, TX (US); and Mark Small, Heavener, OK (US)
Assigned to Retractable Technologies, Inc., Little Elm, TX (US)
Filed by Retractable Technologies, Inc., Little Elm, TX (US); and Thomas J. Shaw, Frisco, TX (US)
Filed on Mar. 29, 2019, as Appl. No. 16/370,239.
Application 16/370,239 is a continuation in part of application No. 15/940,305, filed on Mar. 29, 2018.
Prior Publication US 2019/0298929 A1, Oct. 3, 2019
Int. Cl. A61M 5/31 (2006.01); A61M 5/315 (2006.01); A61M 5/32 (2006.01)
CPC A61M 5/3129 (2013.01) [A61M 5/31501 (2013.01); A61M 5/3202 (2013.01); A61M 5/3234 (2013.01); A61M 2005/3126 (2013.01); A61M 2005/314 (2013.01); A61M 2005/3227 (2013.01); A61M 2205/3379 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A syringe for medical use, comprising:
a barrel comprising (1) a nose with an internal bore, (2) a tubular section extending rearwardly from and coaxially aligned with the nose and having an open rear end, (3) a transversely projecting fingertip flange, and (4) a cylindrical collar extending rearwardly from the transversely projecting fingertip flange and configured to releasably engage with a plunger cap;
a plunger slidably inserted into the tubular section through the cylindrical collar and through the open rear end to form a fluid reservoir inside the tubular section of the barrel;
a needle projecting forwardly from the nose in fixed relation to the internal bore of the nose and in fluid communication with the fluid reservoir;
two indicia display members each unitarily molded and attached in fixed relation to each of the tubular section and the transversely projecting fingertip flange, the two indicia display members each extending longitudinally in a parallel and spaced-apart relation to each other, and each of the two indicia display members having a substantially flat, printable outwardly facing surface, each outwardly facing surface having a printed volumetric scale indicia located adjacent to a sufficiently transparent portion of the tubular section to facilitate reading of a liquid level inside the fluid reservoir through the sufficiently transparent portion of the tubular section; and
a needle safety device comprising (1) an activation handle at least partially disposed between and slidably engaging an inwardly facing, longitudinally extending wall of each of the two indicia display members between a first stop position and a “safe” second stop position, and (2) a needle tip shield that surrounds the nose of the barrel in the first stop position and surrounds a front tip of the needle when the activation handle is manually moved forwardly to the “safe” second stop position following use of the syringe.