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:
Oct. 10, 2000
Filed:
May. 12, 1997
Mary Beth Padgett, Greensboro, NC (US);
Quinton J Farrar, Lakeville, MA (US);
Spectrum Biotech Inc., Carson City, NV (US);
Abstract
The present invention provides a safety syringe having a syringe cylinder, a piston stem, a needle cannula capable of being retracted into said syringe cylinder, and a needle cannula attachment hub capable of attachment to the syringe cylinder. An interior configuration of the hub includes a narrow distal portion and an enlarged well area disposed proximal thereto. The narrow distal portion may also include a plurality of annular grooves. The well area and the annular grooves are capable of being filled with an adhesive for attaching the hub to the needle cannula such that high forward needle pull-out forces and lower reverse needle pull-out forces are obtained.