Gauge device for hypodermic syringes

• US 4,248,225 A
• Filed: 02/09/1979
• Issued: 02/03/1981
• Est. Priority Date: 02/09/1979
• Status: Expired due to Term

• Current Assignee: Fred J. Moore
• Original Assignee: Fred J. Moore
• Inventors: Moore, Fred J.
• Primary Examiner(s): Yasko, John D.
• Application Number:
  US06/010,528
• Time in Patent Office: 725 Days
• Field of Search: 128/218 R, 128/218 C, 128/215, 128/216, 128/234
• US Class Current: 604/208
• CPC Class Codes: A61J 1/201 having one piercing end
• CPC Class Codes: A61J 1/2055 having gripping means
• CPC Class Codes: A61J 1/2096 Combination of a vial and a syringe for transferring or mixing their contents
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 5/1782 Devices aiding filling of syringes in situ combination of a vial and a syringe for transferring or mixing their contents A61J1/2096, filling of medical containers in general B65B3/003

Abstract

A gauge device for a hypodermic syringe may be readily applied to the flanged end of the hypodermic syringe barrel. The gauge device includes a rigid bar which is spaced a predetermined distance from the free end of the plunger of the hypodermic syringe when the plunger is fully extended into the syringe barrel. The bar limits the retractive movement of the plunger from the barrel and therefore limits filling of the hypodermic syringe to a predetermined dosage.

Claims

1. A gauge device for a hypodermic syringe for use by persons with impaired vision, the syringe including an elongate barrel having a needle at one end and having a flange projecting laterally outwardly from the other end thereof, an elongate plunger extending into the barrel and projecting outwardly therefrom, the plunger being extensible into and retractable from the barrel, said gauge device comprising:

a generally rectangular shaped barrel engaging member having opposed end surfaces, opposed side surfaces, and opposed upper and lower surfaces, an arcuate recess in said barrel engaging member extending inwardly from one side surface thereof, a slot in said barrel engaging member extending inwardly from said one side surface and completely receiving therein the flange of the barrel of the syringe when the barrel is positioned within the recess,

a pair of similar spaced apart, elongate, rigid connecting members each being rigidly connected at one end thereof to the barrel engaging member adjacent one of said end surfaces and projecting downwardly from said lower surface,

an elongate plunger engaging element extending between and being rigidly connected to the other end of each of said connecting members and being disposed in obstructing relation with the outer end of the plunger of the syringe to limit retractive movement of the plunger when the barrel engaging member is applied to the syringe, the plunger of the syringe being unobstructed in its movement between a retracted position when the outer end of the plunger engages the upper surface of the plunger engaging element, and a fully extended position, whereby a user when gripping the gauge device with one hand will obstruct the slot in the barrel engaging member the plunger of the syringe will be retracted from the fully extended position, to engage the plunger engaging member, then extended into the barrel after the needle of the syringe is inserted into a container containing a drug, and the plunger may thereafter be retracted to engage the plunger engaging member so that a dosage of predetermined volume is obtained,

and a raised dosage designating number on the side surface of said barrel engaging member opposite the slotted side surface, said raised dosage designating number being capable of being perceived by touch by a user and indicating the dosage when the plunger of the syringe is in the retracted position.