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:
Aug. 13, 2002
Filed:
Jun. 21, 2000
Mitsuru Kakimi, Hyogo, JP;
Mark Hitchins, Sewickley, PA (US);
Medrad, Inc., Indianola, PA (US);
Abstract
A medical syringe includes a cylindrical syringe body and a plunger fitted in the syringe body for injecting a liquid agent filled in the syringe body from the syringe body into the vascular system of the human body by advancing the plunger relative to the syringe body . The plunger comprising a plunger body and an elastic cover fitted over the plunger body from the front. The plunger body is provided with a backplate at a rear end thereof, the backplate having an annular groove forwardly opened and formed in a front surface outer peripheral portion thereof. The portion of the elastic cover to be rearwardly stretched by the advance of the plunger is allowed to ingress into the annular groove for escape.