摘要:
A dispensing device is disclosed for delivering a beneficial agent. The device comprises (1) a semipermeable housing defining a internal space, (2) an optional and presently preferred in the space, (3) a heat responsive composition comprising a beneficial agent in the space, (4) a space consuming member in the device, (5) a non-toxic compound blended with the heat responsive composition for enhancing its viscosity; (6) an exit port in the wall for increasing the internal pressure of the dispenser and for simultaneously letting the beneficial agent exit through said port from the device, and (7) an embodiment comprising a prehydrating fluid for fastening the start-up of delivery from the delivery system.
摘要:
The invention provides a long-term dispensing device comprising a first agent delivery means for short-term and continuous delivery of agent, retained together with a second agent delivery means capable of long-term and continuous delivery of agent. The combination of first and second agent delivery means provides a device in which a substantially constant dose of beneficial agent is delivered to the environment of use over time. A rapid delivery of beneficial agent is followed by continuous and prolonged delivery of agent. In a preferred embodiment the device includes (1) a short term delivery means for rapid and continuous delivery of agent to the environment of use; and (2) a long-term delivery means comprising a semipermeable wall which surrounds and defines an internal lumen; a means in the lumen for expanding and occupying an increased volume of the lumen; a beneficial agent in the lumen that provides a dispensable formulation to the environment of use; and a means in the device for delivery of the beneficial agent to the environment of use over time.
摘要:
The present invention is directed to an apparatus and method for controllably adjusting a fluid delivery device. The device includes an electrochemical pump capable of transporting a fluid. A displaceable member is positioned between a pump product chamber and a reservoir, wherein the pump product chamber is capable of retaining water generated from the pump. The displaceable member is controllably displaced upon generation of water from the electrochemical pump and the reservoir contains the fluid that is delivered upon displacement of the displaceable member.
摘要:
A drug delivery device is disclosed for delivering a drug to the intestine and the colon. The device comprises external means for delaying the delivery of drug in the stomach, and hydrophobic means for preventing the passage of fluid through the delay means.
摘要:
Disclosed are formulations and related methods that comprise a non-polymeric, non-water soluble high viscosity liquid carrier material having a viscosity of at least 5,000 cP at 37° C. that does not crystallize neat under ambient or physiological conditions; a specified linear polymer comprising lactide repeat units; and one or more solvents that have a solvent capacity.
摘要:
A sustained release delivery system for delivering a beneficial agent is provided. The system includes a reservoir comprising the beneficial agent and a capillary channel in communication with the reservoir and the exterior of the system for delivering the beneficial agent from the system. The capillary channel has a cross-sectional area and a length selected to deliver the beneficial agent at a predetermined rate. The system may further include an outer surface that is impermeable and non-porous during delivery of the beneficial agent. The beneficial agent may be formulated in a glassy sugar matrix.
摘要:
An apparatus is provided for the safe, passive reconstruction of a drug or other beneficial agent, without requiring manual reconstitution steps. The apparatus includes a housing, preferably having a receptacle "in-line" in an administration set and forming part of an intravenous delivery system, and a cartridge adapted for receiving a beneficial agent or beneficial agent and carrier. The cartridge is plugged into the receptacle to initiate reconstitution of the agent. The apparatus creates first and second delivery modes, in which the delivery rate of the agent to a patient is independent from and dependent upon, respectively, the fluid flow rate through the intravenous delivery system.
摘要:
An improved method and electrolytic cell for the oxidation of nitrogen-containing waste materials in a dialysate stream used for hemodialysis, hemofiltration or peritoneal dialysis comprises a cylinder having a porous anode and a porous cathode spaced apart in the direction of flow. By flowing the spent dialysate in the direction from the anode to the cathode, and applying sufficient voltage to oxidize chloride ion present to activated chlorine, the waste materials are oxidized to chlorinated intermediates. In the vicinity of the cathode, the chlorinated intermediates react further to yield to nitrogen and carbon dioxide, with the chlorine being reduced back to chloride ion. In this way, the dialysate is regenerated without the net evolution of undesirable chlorine species.