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:
May. 09, 1995
Filed:
Mar. 02, 1994
Jules Silver, Niantic, CT (US);
Louis C Ziegler, Englewood Cliffs, NJ (US);
Other;
Abstract
A hypodermic syringe system for injecting a predetermined dosage of therapeutic fluid into body tissue of a living patient. A sealed capsule contains the fluid to be injected. A double ended hypodermic needle includes a first sharpened end for piercing engagement with the body tissue and a second sharpened end opposite therefrom for piercing engagement with the capsule. The capsule is disposed between the end of a plunger which is slidably engaged within a barrel member supporting the needle and the end wall of the barrel member. Advancement of the plunger moves the capsule into piercing engagement with the second sharpened end of the needle, collapsing the capsule and discharging the therapeutic fluid through the needle and into the body tissue. A safety syringe with a retractable needle is disclosed. The system is also provided with an aspirating capability to inform the user whether or not a blood vessel has been pierced by the needle.