Patent ID: 7611495
Filing Date: 2009-11-03
Classification: A61M

Abstract:
1. An injection retarder syringe attachment for manually controlling the delivery rate of a hand-held hypodermic syringe, comprising: a main body having a proximal section and a distal section, said distal section having a clip substantially immovably securable onto a hypodermic syringe, said proximal section of said main body at least partially extending above the finger grips of the barrel adjacent to a plunger of the syringe, but extending on only one side of the plunger, when said clip is secured to the syringe; and a thumb tip rest including a surface formed on said proximal section of said main body outside of and above the syringe barrel and unobstructed by any other portion of said syringe attachment adapted to allow a user to place a tip of a thumb substantially orthogonally on said surface during dispensing of contents of the syringe, said thumb tip rest adapted to allow the user to selectively slow a rate of progress of the plunger into the barrel, wherein when the user applies force to the head of the plunger with the pad of the thumb while the tip of the thumb is pressing on said thumb tip rest, with said thumb tip rest remaining stationary with respect to the syringe so as to act as a fulcrum for the thumb, force is substantially applied about an axis through the upper thumb joint.