Hipodermic needle perfected. (Machine-translation by Google Translate, not legally binding)

摘要

Improved hypodermic needle, of standard size and dimensions consisting of a tube that has a needle point at its anterior end and connection means and eventual attachment at a posterior end, designed to enter a vein and to prevent the medicinal solution from penetrating into the tissue that surrounds it in the case in which the tip penetrates out of the vein, said hypodermic needle being characterized by being provided with an opening in the wall of the tube at a distance from the tip and by being provided with a material compatible with the blood in the tube space between the opening and the tip that completely obstructs the passage through the tube in said space. (Machine-translation by Google Translate, not legally binding)