Medical capsule device actuated by radio-frequency (RF) signal
Patent 5170801 Issued on December 15, 1992. Estimated Expiration Date: 
October 2, 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 2, 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 3057344 3315660 3485235 3659600 3923969 Capsule for medical use Implantable drug depot and process for the production thereof Device for the release of substances at defined locations in the alimentary tract Medical capsule device Delayed action assembly InventorsAssigneeApplicationNo. 591838 filed on 10/02/1990US Classes:600/582, Collection receptacle placed within body604/113, Having means for cooling or heating body, treating or collected material or device604/890.1, CONTROLLED RELEASE THERAPEUTIC DEVICE OR SYSTEM604/891.1Implanted dynamic device or systemExaminersPrimary: Rosenbaum, C. FredAssistant: Mendez, M. Attorney, Agent or FirmInternational ClassA61M 011/00AbstractA medical capsule device for releasing a substance at a defined location in the gastrointestinal tract. The device has a capsule body defining one or more apertures in the circumferential wall thereof and a sleeve valve rotatably positioned therein having one or more corresponding apertures in the circumferential wall thereof. The sleeve valve comprises a coil and electrically connected heatable resistor which are operatively associated with an actuator member formed of a shape memory alloy responsive to heat and which will move from a non-heated first shape to a heated second shape. Actuator stop means are provided in the capsule body for being engaged by the actuator member during movement from the non-heated first shape to the heated second shape so that the actuator member movement will serve to rotate the sleeve valve to an open position.Field of SearchHaving means for cooling or heating body, treating or collected material or deviceCONTROLLED RELEASE THERAPEUTIC DEVICE OR SYSTEM Implanted dynamic device or system Osmotic or diffusion pumped device or system Infrared, visible light, ultraviolet, X-ray or electrical energy applied to body (e.g., iontophoresis, etc.) Combined with other radiant or wave energy source (e.g., electromagnetic, thermal, microwave etc.) Radioactive substance placed within body (e.g., inhaled, implanted, injected, etc.) Injectors/holders for seeds or implants (e.g., capsules) | |
