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US 5,961,495 AGranted
Medication delivery pen having a priming mechanism
AssigneeBecton, Dickinson and Company
InventorsDaniel A. Walters, Marco Carroll Perry, Hyung J. Lee
Life of this patent
Estimating the term…
Abstract
A medication delivery pen having a repeat-dose feature that is performed by using a pull-push operation. In particular, the medication delivery pen includes means for determining whether the medication delivery pen is armed and a variety of novel drive mechanisms. In addition, the medication delivery pen also includes a priming control mechanism that allows the user to easily prime medication delivery pen prior to arming the pen.
Claims12
A medication delivery pen comprising:
- a pen-needle assembly;
- a vial retainer including a vial containing a medication to be delivered and having said pen-needle assembly removably attached to a distal end;
- a housing having said vial retainer mounted to a distal end and including;
- a dose control mechanism extending from said housing for setting a desired dose to be delivered from the vial;
- a drive mechanism is within said housing for dispensing the desired dose from the vial when in an armed condition, said drive mechanism including a plunger having a plunger face and a proximal shaft extending within said housing in a direction from said plunger face and means for driving said plunger in the distal direction when medication is to be dispensed from the vial;
- and
- means for priming said pen-needle assembly including a priming pawl that interfaces with said means for driving said plunger to cause said plunger to move in the distal direction.
4 more elements
A medication delivery pen comprising:
- a pen-needle assembly;
- a vial retainer including a vial containing a medication to be delivered and having said pen-needle assembly removably attached to a distal end;
- a housing having said vial retainer mounted to a distal end and including;
- extending from said housing for setting a desired dose to be delivered from the vial;
- a drive mechanism with said housing for dispensing the desired dose from the vial when in an armed condition, said drive mechanism including a plunger having a plunger face and a proximal shaft extending within said housing in a direction from said plunger face and means for driving said plunger in the distal direction when medication is to be dispensed from the vial;
- and
- means for priming said pen-needle assembly including a ratchet that interfaces with said means for driving said plunger to cause said plunger to move in the distal direction.
4 more elements
A medication delivery pen comprising:
- a pen-needle assembly;
- a vial retainer including a vial containing a medication to be delivered and having said pen-needle assembly removably attached to a distal end;
- a housing having said vial retainer mounted to a distal end and including;
- a dose control mechanism extending from said housing for setting a desired dose to be delivered from the vial;
- a drive mechanism within said housing for dispensing the desired dose from the vial when in an armed condition, said drive mechanism including a plunger having a plunger face and a shaft extending within said housing in a proximal direction from said plunger face and means for driving said plunger in the distal direction when medication is to be dispensed from the vial;
- and
- means for priming said pen-needle assembly,
- wherein said driving means includes a nut that travels on said shaft of said plunger and drives said plunger in the distal direction when medication is to be dispensed from the vial, and
- wherein said priming means includes a priming control sleeve mounted on said housing having a priming pawl that interfaces with said nut for driving said plunger in the distal direction.
6 more elements
A medication delivery pen comprising:
- a pen-needle assembly;
- a vial retainer including a vial containing a medication to be delivered and having said pen-needle assembly removably attached to a distal end;
- a housing having said vial retainer mounted to a distal end and including;
- a dose control mechanism extending from said housing for setting a desired dose to be delivered for the vial;
- a drive mechanism within said housing for dispensing the desired dose from the vial when in an armed condition, said drive mechanism including a plunger having a plunger face and a shaft extending within said housing in a proximal direction from said plunger face and means for driving said plunger in the distal direction when medication is to be dispensed from the vial;
- and
- means for priming said pen-needle assembly,
- wherein said driving means includes a nut that travels on said shaft of said plunger and drives said plunger in the distal direction when medication is to be dispensed from the vial, and
- wherein said priming means includes a priming control sleeve mounted on said housing having a ratchet that interferes with said nut for driving said plunger in the distal direction.
6 more elements
Dependencies are inferred from the claim text.