Moisture disabled needle
OwnerDonald J. McLeesinventor
Life of this patent
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Abstract
A hypodermic needle which is made primarily from a dissolvable material so that after it is used the exposure to moisture causes it to lose its rigid structure and therefore cannot accidentally prick someone and cannot be used again.
Claims4
A hollow needle for medical purposes made at least in portion of a metal that loses its rigidity upon exposure to moisture such that after use the needle becomes incapable of re-penetrating the skin.
A hollow needle for medical purposes made at least in portion of a material that loses its rigidity upon exposure to moisture and further comprising inner and outer surfaces which are coated with semi-permeable membranes that allow the passage of moisture but contain the rigidity losing material.
Dependencies are inferred from the claim text.