| 摘要 |
Dimensionally stable plunger rod for use with a plunger in a cartridge or syringe barrel for manual or power-assisted withdrawing of fluid from a site or expelling fluid from the cartridge or syringe barrel having: a plunger rod body with distal end proximal ends; 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; a reinforcing disc at about the longitudinal mid point of the plunger body; a first pair or rectangular radially extending vanes connecting the end and reinforcing discs; a second pair or rectangular radially extending vanes connecting the reinforcing disc and the thumb rest; a first pair of triangular radially extending vanes connecting the end disc and the reinforcing disc; and a second pair of triangular radially extending vanes connecting the reinforcing disc and the thumb rest.
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