Method of testing the dose accuracy of a medication delivery device

Claim 1

A method for testing the dose accuracy of a medication delivery device comprising the steps of: a) providing a syringe assembly having a hollow barrel with volume measuring indicia on said barrel, said barrel including an internal chamber, a slidable stopper in said chamber, a needle cannula at a distal end of said barrel, said needle cannula having a lumen therethrough in fluid communication with said chamber; b) providing a medication delivery pen having a distal end including a pierceable septum and means for engaging a needle assembly, a reservoir containing liquid adjacent to said septum, a movable plunger for delivering liquid from said reservoir, said plunger projecting from a proximal end of said pen, and dose setting means for manually selecting the volume of liquid to be delivered by action of said plunger; c) manually activating said dose setting apparatus to select the volume of liquid to be delivered from said pen; d) piercing the septum of said pen with said needle cannula of said syringe so that said lumen is in fluid communication with said reservoir; e) activating said plunger to disperse the selected volume of liquid from said reservoir through said lumen into said syringe barrel chamber so that as liquid enters said chamber, said slidable stopper is moved proximally along said chamber; and f) observing the volume of liquid dispensed into said syringe barrel chamber.

Claim 2

A method for testing the dose accuracy of a medication delivery device comprising the steps of: a) providing a syringe assembly having a hollow barrel with volume measuring indicia on said barrel, said barrel including an internal chamber, a slidable stopper in said chamber, a needle cannula at a distal end of said barrel, said needle cannula having a lumen therethrough in fluid communication with said chamber; b) providing a medication delivery pen having a distal end including a pierceable septum and means for engaging a needle assembly, a reservoir containing liquid adjacent to said septum, a movable plunger for delivering liquid from said reservoir, said plunger projecting from a proximal end of said pen, and dose setting means for manually selecting the volume of liquid to be delivered by action of said plunger; c) manually activating said dose setting apparatus to select the volume of liquid to be delivered from said pen; d) piercing the septum of said pen with said needle cannula of said syringe so that said lumen is in fluid communication with said reservoir; e) activating said plunger to disperse the selected volume of liquid from said reservoir through said lumen into said syringe barrel chamber so that as liquid enters said chamber, said slidable stopper is moved proximally along said chamber; and f) observing the volume of liquid dispensed into said syringe barrel chamber.