Self-actuating applicator for microprojection array
First Claim
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1. A device for impacting a microprojection member against the stratum corneum of a patient, comprising:
- a housing;
a piston moveable within the housing; and
a cap adapted to activate the piston so the piston is capable of impacting the microprojection member against the stratum corneum of a patient;
the device being one-handed self-setting and auto-triggering.
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Abstract
An applicator for applying a microprojection member to the stratum corneum of a patient having a housing, a piston moveable within the housing and a cap adapted to activate the applicator. The applicator is self-setting and auto-triggering, which allows the applicator to be used by patient'"'"'s having neither the strength, nor the manual dexterity to pre-set and activate other types of applicator devices.
227 Citations
18 Claims
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1. A device for impacting a microprojection member against the stratum corneum of a patient, comprising:
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a housing;
a piston moveable within the housing; and
a cap adapted to activate the piston so the piston is capable of impacting the microprojection member against the stratum corneum of a patient;
the device being one-handed self-setting and auto-triggering. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device for impacting a microprojection member against the stratum corneum of a patient, comprising:
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a housing;
a piston moveable within the housing; and
a cap adapted to activate the piston so the piston is capable of impacting the microprojection member against the stratum corneum of a patient;
the device being one-handed self-setting and auto-triggering;
wherein the cap is adapted to move from a primary position to a pre-set position relative to the housing and the piston is adapted to move from the pre-set position to an activated position;
an impact spring in communication with the cap and the piston, the impact spring being adapted to provide an impact force to the piston and bias the piston to an activated position, wherein the impact spring is energized when the cap and the piston are in the pre-set position;
a pre-setting spring in communication with the cap and the housing, said pre-setting spring being adapted to provide a pre-setting force to the cap and bias the cap from the pre-set position to the primary position, wherein the pre-setting spring is energized when the piston is in said activated position.
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13. A transdermal delivery system for delivering a biologically active agent to a patient, comprising:
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A patch system, said patch system including a gel pack containing a hydrogel formulation and a microprojection member having top and bottom surfaces, a plurality of openings that extend through said microprojection member and a plurality of atratum corneum-piercing microprojections that project from said bottom surface of said microprojection member, said microprojection member being adapted to receive said gel pack whereby said hydrogel formulation flows through said microjection member openings; and
an applicator, the applicator comprising;
a housing, a piston moveable within the housing, and a cap adapted to activate the piston so the piston is capable of impacting the microprojection member against the stratum corneum of a patient, the device being one-handed self-setting and auto-triggering. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification