Apparatus for the registration of drops in an infusion device
Patent 4623331 Issued on November 18, 1986. Estimated Expiration Date: 
December 6, 2004. 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.
December 6, 2004. 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 2880764 3500366 3545271 3700904 Automated intravenous fluid regulating and administering apparatus Rate meter Volumetric drop detector Patent #: 4432761 InventorsApplicationNo. 06/678675 filed on 12/06/1984US Classes:604/65, Material flow varying means controlled by condition responsive sensor604/253Having drip sensorExaminersPrimary: Coven, Edward M.Attorney, Agent or FirmInternational ClassA61M 5/168 (20060101)Foreign Application Priority Data1983-12-09 DEAbstractAn apparatus for the registration of drops in an infusion device has a drip chamber from which fluid is supplied from a reservoir through a tube to a patient, with a drop sensor disposed in the region of the drip chamber. The drop sensor is divided into at least two levels, each level having a processing channel allocated thereto including an amplifier, a comparator and a memory. The outputs of each channel are supplied to a logic unit. As long as signals are supplied by each channel to the logic unit, normal and proper operation is assumed, however, a discriminator unit triggers a fault display or an alarm when a signal from only one channel is present within a predetermined time. | |
