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:
Jan. 13, 2004
Filed:
Sep. 05, 2001
James A. Woodard, Jr., Powell, OH (US);
J Douglas Dickson, Columbus, OH (US);
Brian R. Fortner, New Albany, OH (US);
Futura Medical Technologies, Inc., Solano Beach, CA (US);
Abstract
A hypodermic syringe includes a barrel with a plunger assembly slidably extending therein. The plunger assembly includes an outer plunger and an inner plunger telescoping together with a bungee resisting extension of the assembly. The inner and outer plungers may be locked in the extended position with the bungee in tension. A seal stop is located at the seal end of the plunger assembly and holds an annular seal in radial extension sealing against the internal sidewall of the barrel. A luer hub assembly is fixed at the needle end of the barrel. A plunger cap may be advanced after injection to rotate the plunger assembly. Such rotation engages a probe on the end of the plunger assembly with the luer hub, disengages the seal stop to release the annular seal, engages the seal stop with the luer plunger assembly causing release of the luer hub assembly from the barrel and releases the engagement between the outer plunger and inner plunger. The foregoing provides for the retraction of the luer hub and associated needle into the barrel.