Abstract: This invention provides a prefilled selectively activatable body-worn infusion-pump assembly for rapid delivery of large volumes or highly viscous volume comprising a housing; a pre-filled aseptically-sealed flexible drug reservoir-containing assembly; a conjoined, coordinately controlled and perpendicularly arranged cannulated needle dispensing and needle insertion assembly operationally connected to and in fluid connection with the pre-filled aseptically-sealed drug reservoir-containing assembly, wherein the cannulated needle dispensing assembly projects generally perpendicularly to a generally planar surface of the housing, promotes insertion of the cannulated needle in skin of a subject and promotes retraction of the needle within the cannulated needle dispensing assembly thereafter, and wherein the needle insertion assembly projects generally in a parallel orientation to a generally planar surface of the housing, which projection initiates opening a fluid path with the pre-filled aseptically-sealed drug

Abstract: A needle device has a needle retraction mechanism that retracts the needle upon removing the device from the skin surface (either intentionally or unintentionally). Once the needle is retracted, the device is rendered inoperative. The needle can be further made inoperative by bending it when one attempts to reuse the device. In another embodiment, a needle opening formed in the base of the housing can be covered to render the needle inoperative when one attempts to reuse the device. In another embodiment, the needle device instead has a needle shield that automatically covers the needle after use.

Abstract: A drug delivery device having a housing having an internal reservoir in communication with a drug delivery outlet via a fluid path. An expandable chamber disposed adjacent to the reservoir forces drug from the reservoir to the outlet when supplied with a gas. A flow regulating chamber, in communication with the fluid path, is capable of volumetric changes in response to temperature and/or pressure changes. An increase in the volume of the flow regulating chamber increases flow resistance to the outlet and thereby counteracts the corresponding increase in delivery rate resulting from the expansion of the expandable chamber due to the same volumetric changes in response to temperature and/or pressure. In a preferred embodiment, an electrical circuit has a current stabilizing element in electrical communication with an electrolytic cell which supplies the gas. A throttling device maintains a higher pressure in the device to reduce possible clogging of the fluid path.

Abstract: A drug delivery device having a housing having an internal reservoir in communication with a drug delivery outlet via a fluid path. An expandable chamber disposed adjacent to the reservoir forces drug from the reservoir to the outlet when supplied with a gas. A flow regulating chamber, in communication with the fluid path, is capable of volumetric changes in response to temperature and/or pressure changes. An increase in the volume of the flow regulating chamber increases flow resistance to the outlet and thereby counteracts the corresponding increase in delivery rate resulting from the expansion of the expandable chamber due to the same volumetric changes in response to temperature and/or pressure. In a preferred embodiment, an electrical circuit has a current stabilizing element in electrical communication with an electrolytic cell which supplies the gas. A throttling device maintains a higher pressure in the device to reduce possible clogging of the fluid path.