| 摘要 |
Dimensionally stable plunger rod for use with a plunger in a cartridge or syringe barrel for manual or power-assisted withdrawal of fluid from a site or expelling fluid from the cartridge or syringe barrel having:a plunger rod body with a distal and a proximal end:an end disc at the distal end;a threaded member integral with the end disc designed to engage a plunger;a thumb rest at the proximal end;four longitudinal radially extending rectangular vanes connected to the end disc at the distal end, and to the thumb rest at the proximal end;two pairs of longitudinal radially extending reinforcing vanes forming two triangular configurations with one of the longitudinal radially extending rectangular vanes on one side of the plunger rod body; andtwo pairs of longitudinal radially extending reinforcing vanes forming two triangular configurations with another of the longitudinal radially extending rectangular vanes on the opposite side of the plunger rod body, each of the pairs of the reinforcing vanes are connected to the end disc at the distal end, and to the thumb rest at the proximal end.
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