Abstract: In an aspect, a system for determining a liquid level in a drug delivery device is presented. The system includes a first spring and a second spring positioned adjacent the first spring. The system includes a rod configured to compress at least the first spring and contact the second spring. The system includes a sensing element in communication with the first spring and the second spring. The sensing element is configured to detect a difference in voltage of at least the first spring. A difference in voltage of at least the first spring corresponds to an amount of liquid drug of the drug delivery device.

Abstract: In an aspect, a system for determining a liquid level in a drug delivery device is presented. The system includes a first spring and a second spring positioned adjacent the first spring. The system includes a rod configured to compress at least the first spring and contact the second spring. The system includes a sensing element in communication with the first spring and the second spring. The sensing element is configured to detect a difference in voltage of at least the first spring. A difference in voltage of at least the first spring corresponds to an amount of liquid drug of the drug delivery device.

Abstract: A directed jet mouthpiece (10) comprises at least one mouthpiece trough (12, 14) configured to fit over a front portion of a dental arch of a user's teeth. The at least one mouthpiece trough includes a buccal-side vertical member (16), a lingual-side vertical member (18) and an occlusal-side horizontal member (20) extending in between. The at least one mouthpiece trough further includes at least one fluidics inlet (22), a plurality of jet orifices (24) on both buccal- and lingual-side vertical members, and at least one fluidics path (26) disposed between the fluidics inlet and jet orifices. A plurality of directed jet orifices (28) is disposed in end regions (30) of the at least one mouthpiece trough. The at least one fluidics path (26) is further disposed between the fluidics inlet and plurality of directed jet orifices. The plurality of directed jet orifices (28) direct fluid jets rearward towards a remainder of teeth in a user's mouth beyond the end regions (30) of the at least one mouthpiece trough.

Abstract: A directed jet mouthpiece (10) comprises at least one mouthpiece trough (12, 14) configured to fit over a front portion of a dental arch of a user's teeth. The at least one mouthpiece trough includes a buccal-side vertical member (16), a lingual-side vertical member (18) and an occlusal-side horizontal member (20) extending in between. The at least one mouthpiece trough further includes at least one fluidics inlet (22), a plurality of jet orifices (24) on both buccal- and lingual-side vertical members, and at least one fluidics path (26) disposed between the fluidics inlet and jet orifices. A plurality of directed jet orifices (28) is disposed in end regions (30) of the at least one mouthpiece trough. The at least one fluidics path (26) is further disposed between the fluidics inlet and plurality of directed jet orifices. The plurality of directed jet orifices (28) direct fluid jets rearward towards a remainder of teeth in a user's mouth beyond the end regions (30) of the at least one mouthpiece trough.

Abstract: A directed jet mouthpiece (10) comprises at least one mouthpiece trough (12,14) configured to fit over a front portion of a dental arch of a user's teeth. The at least one mouthpiece trough includes a buccal-side vertical member (16), a lingual-side vertical member (18) and an occlusal-side horizontal member (20) extending in between. The at least one mouthpiece trough further includes at least one fluidics inlet (22), a plurality of jet orifices (24) on both buccal- and lingual-side vertical members, and at least one fluidics path (26) disposed between the fluidics inlet and jet orifices. A plurality of directed jet orifices (28) is disposed in end regions (30) of the at least one mouthpiece trough. The at least one fluidics path (26) is further disposed between the fluidics inlet and plurality of directed jet orifices. The plurality of directed jet orifices (28) direct fluid jets rearward towards a remainder of teeth in a user's mouth beyond the end regions (30) of the at least one mouthpiece trough.

Abstract: Cartridges configured for use in a hair treatment device include a pouch having an outlet, a capsule located within the pouch, and a fitment sealed within the outlet of the pouch. The pouch contains a first product and the capsule contains a second product.

Abstract: A directed jet mouthpiece (10) comprises at least one mouthpiece trough (12,14) configured to fit over a front portion of a dental arch of a user's teeth. The at least one mouthpiece trough includes a buccal-side vertical member (16), a lingual-side vertical member (18) and an occlusal-side horizontal member (20) extending in between. The at least one mouthpiece trough further includes at least one fluidics inlet (22), a plurality of jet orifices (24) on both buccal- and lingual-side vertical members, and at least one fluidics path (26) disposed between the fluidics inlet and jet orifices. A plurality of directed jet orifices (28) is disposed in end regions (30) of the at least one mouthpiece trough. The at least one fluidics path (26) is further disposed between the fluidics inlet and plurality of directed jet orifices. The plurality of directed jet orifices (28) direct fluid jets rearward towards a remainder of teeth in a user's mouth beyond the end regions (30) of the at least one mouthpiece trough.

Abstract: A switch-operated therapeutic agent delivery device. Embodiments of the operated therapeutic agent delivery device my include a switch that can be operated by a user, a device controller connected to the switch through a switch input where the device can actuate the device when certain predetermined conditions are met, following performance of both a digital switch validation test and an analog switch validation test. The switch operated therapeutic agent delivery device may have two parts, which are assembled by a user prior to use. These devices may be configured to determine if a current is present between the anode and cathode when drug is not intended to be delivered by the device. These devices may indirectly control and/or monitor the applied current without directly measuring from the cathode of the patient terminal.

Abstract: A switch operated therapeutic agent delivery device is described. The device comprises two parts, which are assembled by a user prior to use. A first part contains a power supply and circuitry for the device; and a second part comprises electrodes and reservoirs containing the therapeutic agent to be delivered. The action of combining the two parts of the device causes the two parts to be irreversibly coupled together, completes an electrical connection between the two parts, and closes one or more switches, thereby connecting a power source, such as a battery, into the device's circuitry, thereby powering the device on so that it is ready for use. The device can then be attached to a patient, who can operate the device by pressing a button in a proper sequence.

Abstract: A switch operated therapeutic agent delivery device is described. The device comprises two parts, which are assembled by a user prior to use. A first part contains a power supply and circuitry for the device; and a second part comprises electrodes and reservoirs containing the therapeutic agent to be delivered. The action of combining the two parts of the device causes the two parts to be irreversibly coupled together, completes an electrical connection between the two parts, and closes one or more switches, thereby connecting a power source, such as a battery, into the device's circuitry, thereby powering the device on so that it is ready for use. The device can then be attached to a patient, who can operate the device by pressing a button in a proper sequence.

Abstract: A switch operated therapeutic agent delivery device is described. The device comprises two parts, which are assembled by a user prior to use. A first part contains a power supply and circuitry for the device; and a second part comprises electrodes and reservoirs containing the therapeutic agent to be delivered. The action of combining the two parts of the device causes the two parts to be irreversibly coupled together, completes an electrical connection between the two parts, and closes one or more switches, thereby connecting a power source, such as a battery, into the device's circuitry, thereby powering the device on so that it is ready for use. The device can then be attached to a patient, who can operate the device by pressing a button in a proper sequence.

Abstract: A switch operated therapeutic agent delivery device is described. The device comprises two parts, which are assembled by a user prior to use. A first part contains a power supply and circuitry for the device; and a second part comprises electrodes and reservoirs containing the therapeutic agent to be delivered. The action of combining the two parts of the device causes the two parts to be irreversibly coupled together, completes an electrical connection between the two parts, and closes one or more switches, thereby connecting a power source, such as a battery, into the device's circuitry, thereby powering the device on so that it is ready for use. The device can then be attached to a patient, who can operate the device by pressing a button in a proper sequence.

Abstract: A switch operated therapeutic agent delivery device is described. The device comprises two parts, which are assembled by a user prior to use. A first part contains a power supply and circuitry for the device; and a second part comprises electrodes and reservoirs containing the therapeutic agent to be delivered. The action of combining the two parts of the device causes the two parts to be irreversibly coupled together, completes an electrical connection between the two parts, and closes one or more switches, thereby connecting a power source, such as a battery, into the device's circuitry, thereby powering the device on so that it is ready for use. The device can then be attached to a patient, who can operate the device by pressing a button in a proper sequence.