Bladder arrangement for microneedle-based drug delivery device
First Claim
1. A bladder arrangement for an active transdermal drug delivery device, comprising:
- a first flexible membrane having an inner and outer surface;
a bladder member including an inner surface, an outer surface and an aperture therethrough, the inner surface of the flexible membrane and the inner surface of the bladder member defining a chamber for receiving a drug therein;
an array of microneedles, each microneedle having an input;
a valve arrangement received within the aperture in the bladder member and communicating with the inputs of the microneedles through a passageway, the valve arrangement movable between a first configuration wherein the inputs of the microneedles are isolated from the drug in the chamber and a second configuration wherein the passageway communicates with the drug in the chamber;
a pressure source engageable with the flexible membrane, the pressure source having a first retracted configuration and a second expanded configuration wherein the pressure source urges the drug from the chamber towards the passageway; and
an actuator movable between a first non-actuated position and a second actuated position;
wherein;
the pressure source moves to the expanded configuration in response to the movement of the actuator to the actuated position;
the valve arrangement moves from the first configuration to the second configuration in response to the movement of the actuator to the actuated position; and
at least a portion of the bladder member defining the aperture is rigid.
1 Assignment
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Accused Products
Abstract
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.
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Citations
14 Claims
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1. A bladder arrangement for an active transdermal drug delivery device, comprising:
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a first flexible membrane having an inner and outer surface; a bladder member including an inner surface, an outer surface and an aperture therethrough, the inner surface of the flexible membrane and the inner surface of the bladder member defining a chamber for receiving a drug therein; an array of microneedles, each microneedle having an input; a valve arrangement received within the aperture in the bladder member and communicating with the inputs of the microneedles through a passageway, the valve arrangement movable between a first configuration wherein the inputs of the microneedles are isolated from the drug in the chamber and a second configuration wherein the passageway communicates with the drug in the chamber; a pressure source engageable with the flexible membrane, the pressure source having a first retracted configuration and a second expanded configuration wherein the pressure source urges the drug from the chamber towards the passageway; and an actuator movable between a first non-actuated position and a second actuated position;
wherein;the pressure source moves to the expanded configuration in response to the movement of the actuator to the actuated position; the valve arrangement moves from the first configuration to the second configuration in response to the movement of the actuator to the actuated position; and at least a portion of the bladder member defining the aperture is rigid. - View Dependent Claims (2, 3, 4)
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5. A bladder arrangement for a drug delivery device, comprising:
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a flexible membrane having an inner surface, an outer surface and an outer periphery; a bladder member including an inner surface, an outer surface, an aperture extending therethrough and an outer periphery bonded to the outer periphery of the flexible membrane, the inner surface of the flexible membrane and the inner surface of the bladder member defining a chamber for receiving a drug therein; an array of microneedles, each microneedle having an input communicating with a passageway; and a valve arrangement received in the aperture for controlling the flow of the drug from the chamber to the passageway, the valve arrangement movable between a first configuration wherein the inputs of the microneedles are is isolated from the drug in the chamber and a second configuration wherein the passageway communicates with the drug in the chamber; a pressure source engageable with the flexible membrane, the pressure source having a first retracted configuration and a second expanded configuration wherein the pressure source urges the drug from the chamber towards the passageway; and an actuator movable between a first non-actuated position and a second actuated position;
wherein;the pressure source moves to the expanded configuration in response to the movement of the actuator to the actuated position; the valve arrangement moves from the first configuration to the second configuration in response to the movement of the actuator to the actuated position; and at least a portion the bladder member defining the aperture is rigid. - View Dependent Claims (6, 7, 8, 9)
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10. A bladder arrangement for a drug delivery device, comprising:
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a flexible membrane having an inner surface, an outer surface and an outer periphery; a bladder member having an aperture therethough and including an inner surface, an outer surface and an outer periphery, the inner surfaces of the flexible membrane and the inner surface of the bladder member defining a chamber for receiving a drug therein; an array of microneedles having inputs communicating with a passageway and outputs receivable within the individual; and a valve received in the aperture in the bladder member and operatively connecting the passageway and the chamber, the valve movable between a first configuration wherein the inputs of the microneedles are is isolated from the drug in the chamber and a second configuration wherein the passageway communicates with the drug in the chamber; a pressure source engageable with the flexible membrane, the pressure source having a first retracted configuration and a second expanded configuration wherein the pressure source urges the drug from the chamber towards the passageway; and an actuator movable between a first non-actuated position and a second actuated position;
wherein;the pressure source moves to the expanded configuration in response to the movement of the actuator to the actuated position; the valve moves from the first configuration to the second configuration in response to the movement of the actuator to the actuated position; and the entirety of the bladder member is rigid. - View Dependent Claims (11, 12, 13, 14)
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Specification