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US 4,784,645 AGranted
Apparatus for detecting a condition of a medication infusion system and providing an informational signal in response thereto
AssigneeThe Johns Hopkins University
InventorRobert E. Fischell
Life of this patent
Estimating the term…
Abstract
A medication infusion system having a means for providing an informational signal when (1) medication in the reservoir falls below a threshold level; (2) a fluid leak occurs in different portions of the system; and (3) the intended medication pumping does not correlate with the pumping actually affected.
Claims5
An apparatus for infusing medication into a living body comprising:
- a medication reservoir means for storing medication to be infused;
- a pulsatile pump means operably coupled to said reservoir means for pumping a dose of medication in response to an electrical pulse input;
- means for applying said electrical pulse input to said pumping means;
- an infusion output from which pumped medication exits the system and is dispensed to the patient;
- a sensing means, disposed at the infusion output, for sensing the actuation of said pumping means and the dispensing of a dose of medication and transducing an electrical signal corresponding to each dispensed dose;
- and,
- a volume detecting means for detecting the volume of medication dispensed from said reservoir means, and including,
- a counting means, operably coupled to said sensing means for counting the occurrences of said electrical signal corresponding to said dispensing dose, and
- a means for providing an information signal when said counting means reaches a certain count number.
6 more elements
A system for infusing medication into a patient comprising:
- a pulsatile pump means for pumping a dose of medication in response to an electrical pulse input;
- means for applying said electrical pulse input to said pumping means;
- an infusion output from which pumped medication exits the system and is dispensed to the patient;
- means, disposed at the infusion output, for sensing the actuation of said pumping means and the dispensing of a dose of medication and transducing a single corresponding electrical pulse for each dispensed dose,
- means, receiving inputs from the electrical pulse transducing means and from the electrical pulse applying means, for comparing the number of applied electrical pulses with the number of transduced electrical pulses;
- and,
- means, connected to the comparing means, for generating an informational signal when the number of transducer electrical pulses deviate from the number of applied electrical pulses.
4 more elements
Dependencies are inferred from the claim text.