Needle with multi-bevel tip geometry
AssigneeFacet Technologies, LLC
InventorBenjamin Chopra
Life of this patent
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Abstract
A multi-beveled needle point geometry for hypodermic needles such as pen needles. A proximal bevel is formed at a first angle of inclination, a pair of intermediate bevels at a second angle of inclination, and a pair of distal bevels at a third angle of inclination and differing angles of rotation. The second angle of inclination is substantially different than the first angle of inclination to define a marked apex at the intersections between the proximal bevel and the intermediate bevels. At least one smooth transition is typically provided between adjacent bevels, between a bevel and an outer surface of the needle, and/or between a bevel and the lumen of the needle.
Claims14
A needle, comprising:
- a cannula having a proximal end, a distal end, a longitudinal axis extending between the proximal and distal ends, an elongate lumen extending axially therethrough along the longitudinal axis, and a multi-beveled point at the distal end,
- wherein the multi-beveled point includes a proximal bevel, a pair of intermediate bevels, and a pair of distal bevels, the proximal bevel being formed at a first angle of inclination relative to the longitudinal axis, the pair of intermediate bevels being formed at a second angle of inclination relative to the longitudinal axis, and the pair of distal bevels being formed at a third angle of inclination and having angles of rotation relative to a vertical axis which differ from one another, wherein the proximal bevel and the pair of intermediate bevels have a pair of transverse edges therebetween, and the pair of intermediate bevels and the pair of distal bevels have first and second smooth transition zones therebetween, and the pair of distal bevels have a third smooth transition zone therebetween, and
- wherein the third smooth transition zone is rounded.
Dependencies are inferred from the claim text.