Anti-coring needle

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/32 (2006.01)

Patent

CA 2234997

A hypodermic needle comprising a tubular, elongated, generally cylindrical wall (12) defining an internal longitudinal bore (14) extending longitudinally therethrough along a longitudinal axis. The longitudinal bore has forward and rearward openings (16, 18). The cylindrical wall is constructed and arranged to form a forward pointed end (20) and a rearward pointed end (22). The rearward pointed end is defined by an annular end surface (24) forming the rearward end of said cylindrical wall. The rearward pointed end terminates in the most rearward point (26) lying in an imaginary plane (28) disposed perpendicularly to the longitudinal axis (x). The annular rearward end surface defines an imaginary plane (32) inclined with respect to the imaginary plane perpendicular to the longitudinal axis. The cylindrical wall (12) has a laterally facing opening (34) spaced from the rearward opening of the longitudinal bore, and the longitudinal bore is restricted at a position between the rearward opening and the laterally facing opening.

L'invention concerne une aiguille hypodermique comprenant une paroi tubulaire allongée, généralement cylindrique (12) délimitant un lumen longitudinal traversant interne (14) s'étendant le long d'un axe longitudinal. Le lumen longitudinal a des ouvertures avant et arrière (16)(18). La paroi cylindrique est réalisée et agencée pour former une extrémité pointue avant (20) et une extrémité pointue arrière (22). L'extrémité pointue arrière est délimitée par une surface annulaire terminale (24) formant l'extrémité arrière de la paroi cylindrique. L'extrémité pointue arrière (24) se termine par une pointe (26), située dans un plan imaginaire (28), perpendiculaire à l'axe longitudinal (x). La surface d'extrémité annulaire arrière définit un plan imaginaire (32), incliné par rapport (au) plan imaginaire perpendiculaire à l'axe longitudinal. La paroi cylindrique (12) a une ouverture latérale (34) espacée de l'ouverture arrière du lumen longitudinal et le lumen longitudinal est resserré en une position entre l'ouverture arrière et l'ouverture faisant face latéralement.

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