Multiple vesicle implantable drug delivery system
Patent 5167625 Issued on December 1, 1992. Estimated Expiration Date: 
October 9, 2010. 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.
October 9, 2010. 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 3923060 Implantable drug infusion regulator Surgically implantable pump Cobalt-chromium alloys Delayed action assembly Drug-injection animal capture collar Self consumable initiator Sterile storage and mixing dispenser Device for dispensing active substances to a patient Patent #: 4969873 InventorsAssigneeApplicationNo. 595087 filed on 10/09/1990US Classes:604/891.1, Implanted dynamic device or system604/19, MEANS FOR INTRODUCING OR REMOVING MATERIAL FROM BODY FOR THERAPEUTIC PURPOSES (E.G., MEDICATING, IRRIGATING, ASPIRATING, ETC.)604/93.01, Material introduced or removed through conduit, holder, or implantable reservoir inserted in body604/140, Material impelled by pressurized charge of gas or vacuum604/890.1CONTROLLED RELEASE THERAPEUTIC DEVICE OR SYSTEMExaminersPrimary: Rosenbaum, C. FredAssistant: Smith, Chalin Attorney, Agent or FirmInternational ClassA61K 009/22AbstractAn implantable drug delivery system includes a housing having a plurality of compartments each of which includes an opening on one side thereof and a floor generally opposite the opening. Also included are a plurality of flexible drug containment sacks, each having a mouth circumscribing an opening in the sack, with the sack being disposed in a respective compartment with the mouth affixed to the opening of that compartment to seal the inside of the sack from the inside of the compartment and to enable holding a drug formulation in the sack. A plurality of covers are disposed over a respective compartment opening for preventing the release of drug formulation contained in the sacks in the compartment covered, until ruptured or removed. A plurality of gas generating elements are disposed at the floor of a respective compartment under the sack in that compartment and are responsive to initiation signals for producing gas to force the sacks and drug formulations against the covers to thereby rupture or remove the covers and force the formulations out of the housing. An electrical circuit supplies initiation signals to the gas generating means to initiate production of the gas and thus discharge of the drug formulation.Field of SearchCONTROLLED RELEASE THERAPEUTIC DEVICE OR SYSTEMImplanted dynamic device or system MEANS 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 means for cutting, scarifying, or vibrating (e.g., ultrasonic, etc.) tissue Gas application Material flow varying means controlled by condition responsive sensor Sensor controls pump, motor, or pressure driven means Means broken, cut, pierced, or torn to permit material flow to body Means for controlling material flow to or from body, or metering a predetermined dose or amount Treating material forced into or out of body by self-acting fluid pressure, motor-driven, or mechanical energy storing means (e.g., pressure infusion or aspiration, etc.) Portion of conduit stored in material supply means Material impelled by pressurized charge of gas or vacuum Pressurizing gas generated by chemical reaction Means broken, cut, pierced, or torn to permit material flow Closure moved, expanded, or flexed by force transmitted by liquid Closure or barrier between compartments moved to permit mixing HAVING ELECTRICAL ACTUATOR Bioelectrical (e.g., myoelectric, etc.) | |
