Delivery devices with pulsatile effect
May 5, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3760806 Sustained release capsule for ruminants Medical capsule device Release device Pulsatile drug delivery system Constant release system with pulsed release Pulsed drug delivery of doxylamine Heavy density depot Multi-layer delivery system Multi-layer delivery system InventorsApplicationNo. 058151 filed on 05/05/1993US Classes:604/892.1, Osmotic or diffusion pumped device or system424/422, Implant or insert604/143, Piston impelled by gas or vacuum pressure604/890.1CONTROLLED RELEASE THERAPEUTIC DEVICE OR SYSTEMExaminersPrimary: Rosenbaum, C. FredAssistant: Smith, Chalin Attorney, Agent or FirmForeign Patent References
International ClassA61K 009/22AbstractDelivery devices which include a beneficial agent and an activating mechanism in separate compartments separated by a moveable partition are designed to deliver the beneficial agent in a pulsatile manner through an orifice. The pulsatile delivery is achieved by a band of resilient material which is placed over the orifice. The resilient material is sufficiently tight to substantially seal the orifice when the pressure within the device is below a threshold level while at the same time being capable of being stretched when the internal pressure exceeds the threshold.Field of SearchMEANS FOR INTRODUCING OR REMOVING MATERIAL FROM BODY FOR THERAPEUTIC PURPOSES (E.G., MEDICATING, IRRIGATING, ASPIRATING, ETC.)Infrared, visible light, ultraviolet, X-ray or electrical energy applied to body (e.g., iontophoresis, etc.) With tubular injection means inserted into body With means for cutting, scarifying, or vibrating (e.g., ultrasonic, etc.) tissue CONTROLLED RELEASE THERAPEUTIC DEVICE OR SYSTEM Implanted dynamic device or system Osmotic or diffusion pumped device or system Specially adapted for ruminant animal Implant or insert Membrane or diffusion barrier With porous, perforated, apertured, or sieved layer (e.g., dialyzing layer, microporous layer, etc.) | |
