초록

A needle assembly for a medication delivery pen having a 31 gauge needle cannula that reduces penetration force during an injection process resulting in less pain to the patient without causing any loss in performance or structural integrity.

대표청구항 ▼

[ What is claimed is:] [1.] A medication delivery pen for delivering medication to a patient during an injection procedure comprising:a needle assembly having a 31 gauge needle cannula;a cartridge assembly containing medication having a proximal and distal end, said proximal end including an array o

[ What is claimed is:] [1.] A medication delivery pen for delivering medication to a patient during an injection procedure comprising:a needle assembly having a 31 gauge needle cannula;a cartridge assembly containing medication having a proximal and distal end, said proximal end including an array of threads and a stopper and said distal end including means for attaching said needle assembly so that medication can flow through said 31 gauge needle cannula during an injection procedure; anda dosing apparatus having opposed proximal and distal ends with an array of threads at said distal end for threaded engagement with said threads at said proximal end of said cartridge assembly, said dosing apparatus further comprising a plunger rod projecting beyond said distal end of said dosing apparatus for selective engagement with said stopper in said cartridge assembly, and means for moving said plunger rod distally in said dosing apparatus selected amounts, whereby said plunger rod moves said stopper in said cartridge assembly to dispense medication from said cartridge assembly through said 31 gauge needle cannula.