摘要:
A bladder arrangement is provided for a microneedle-based drug delivery device. The bladder arrangement includes a flexible membrane having an inner surface, an outer surface and an outer periphery. A bladder member, having a rigidity greater than the flexible membrane, includes an inner surface, an outer surface and an outer periphery. The inner surface of the flexible membrane and the inner surface of the bladder member define a chamber for receiving a drug therein. At least one microneedle is operatively connected to the bladder member. The at least one microneedle has an input and an output receivable within the individual. A valve operatively connects the input of the at least one microneedle and the chamber.
摘要:
A bladder arrangement is provided for a microneedle-based drug delivery device. The bladder arrangement includes a flexible membrane having an inner surface, an outer surface and an outer periphery. A bladder member, having a rigidity greater than the flexible membrane, includes an inner surface, an outer surface and an outer periphery. The inner surface of the flexible membrane and the inner surface of the bladder member define a chamber for receiving a drug therein. At least one microneedle is operatively connected to the bladder member. The at least one microneedle has an input and an output receivable within the individual. A valve operatively connects the input of the at least one microneedle and the chamber.
摘要:
A device for delivering a drug into the skin of a subject is provided. The device includes a drug reservoir and a microneedle having a tip, a length, and a tip sharpness. The microneedle is coupled to the reservoir. The device includes a microneedle actuator coupled to the microneedle configured to drive the microneedle into the skin of the subject upon activation. The tip sharpness and the actuator allow the microneedle to pass through an outer layer of the skin upon activation, and the length is limited such that the tip does not extend past a desired depth below the surface of the skin of the subject, wherein the desired depth is located in the papillary dermis or the reticular dermis.
摘要:
A drug delivery device for delivering a drug to a subject is provided. The drug delivery device includes a housing, a drug reservoir supported by the housing containing the drug and a hollow microneedle supported by the housing. The hollow microneedle is moveable from an inactive position to an activated position, wherein, when the hollow microneedle is moved to the activated position, the tip portion of the hollow microneedle is configured to penetrate the skin of the subject. The drug delivery device includes a channel having an input in communication with the drug reservoir and an output in communication with the hollow microneedle. The channel provides fluid communication between the drug reservoir and the hollow microneedle, such that the drug is permitted to flow from the drug reservoir through the channel and through the hollow microneedle. The channel moves from a first position to a second position as the hollow microneedle moves from the inactive position to the activated position, and the position of the drug reservoir relative to the housing remains fixed as the hollow microneedle moves from the inactive position to the activated position.
摘要:
A drug delivery platform is provided for delivering a controlled infusion of a drug to an individual. The drug delivery platform includes a reservoir for receiving the drug therein and a hydrogel engageable with the reservoir. The hydrogel is movable between a first configuration and a second configuration wherein the hydrogel exerts a pressure on the reservoir to urge the drug therefrom in response to a predetermined stimulus. A flow guide distributes the predetermined stimulus over the hydrogel in response to activation by an individual.
摘要:
An active microneedle array and method are provided for penetrating an outer layer of an epidermis. The active microneedle array includes a base having first and second sides. The first side of the base is engageable with the epidermis. A microneedle projects from the first side of the base. The microneedle is moveable between a first initial configuration and a second deformed configuration in response to engagement with the epidermis so as to form a passageway therein.
摘要:
A drug delivery platform is provided for delivering a controlled infusion of a drug to an individual. The drug delivery platform includes a reservoir for receiving the drug therein and a hydrogel engageable with the reservoir. The hydrogel is movable between a first configuration and a second configuration wherein the hydrogel exerts a pressure on the reservoir to urge the drug therefrom in response to a predetermined stimulus. A flow guide distributes the predetermined stimulus over the hydrogel in response to activation by an individual.
摘要:
An active microneedle array and method are provided for penetrating an outer layer of the epidermis. The active microneedle array includes a base having first and second sides. The first side of the base is engageable with the epidermis. A microneedle projects from the first side of the base. The microneedle is moveable between a first initial configuration and a second deformed configuration in response to engagement with the epidermis so as to form a passageway therein.