CO2 monitored drug infusion system
First Claim
1. A patient care system, comprising:
- a pump for delivery of a medical fluid to a patient;
a controller in communication with the pump for controlling operation of the pump;
a monitor unit that monitors the expiration air of the patient and provides a measured value of a selected component of the expiration air to the controller; and
a memory with which the controller is connected, the memory comprising a stored range of acceptable values of the selected component of expiration air;
wherein the controller compares the measured value of the selected component received from the monitor unit to the range of acceptable values for the component stored in the memory and if the measured value is outside the range stored in the memory, the controller performs a predetermined action.
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0 Petitions
Accused Products
Abstract
A patient care system comprising an interface unit, an infusion pump unit, and a capnography unit is disclosed. The infusion pump unit is used to administer medical fluids to a patient, including the administration of anesthetics, analgesics, or sedatives. The capnography unit provides monitoring of the patient'"'"'s expired air, in particular, the end tidal CO2 levels in the expired air and the respiration rate. When the capnography unit indicates to the interface unit that the end tidal CO2 level and/or pulse rate has reached a point outside a specified range, the interface unit initiates visual and audio alarms and controls the infusion pump unit by modifying the flow or by shutting off the pump unit. In patient controlled analgesia applications, the interface unit may block patient-controlled bolus doses of the analgesic until reset by a qualified medical professional or until the measured capnography values return to a normal range. The interface unit also contains communication ports, which the interface unit can use to send signals to external devices, such as to alert medical personnel.
248 Citations
43 Claims
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1. A patient care system, comprising:
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a pump for delivery of a medical fluid to a patient;
a controller in communication with the pump for controlling operation of the pump;
a monitor unit that monitors the expiration air of the patient and provides a measured value of a selected component of the expiration air to the controller; and
a memory with which the controller is connected, the memory comprising a stored range of acceptable values of the selected component of expiration air;
wherein the controller compares the measured value of the selected component received from the monitor unit to the range of acceptable values for the component stored in the memory and if the measured value is outside the range stored in the memory, the controller performs a predetermined action. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A patient care system, comprising:
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a pump for intravenous delivery of a drug to a patient;
a microprocessor controller in communication with the pump for controlling operation of the pump; and
a capnography unit for monitoring the concentration of carbon dioxide in the patient'"'"'s expired air, said capnography unit communicating with the microprocessor controller and cooperating therewith to cause a change in the delivery of the drug to the patient in response to the concentration of carbon dioxide exceeding a predetermined levels as measured by said monitor. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A patient care system, comprising:
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a pump capable of intravenous delivery of a drug to a patient;
control means for permitting the patient to self-administer analgesia using said pump; and
a capnography monitor monitoring the concentration of carbon dioxide in the patient'"'"'s expired air, said capnography monitor cooperating with said delivery of analgesia to automatically prevent administration of analgesia using the patient control means in response to the concentration of carbon dioxide falling outside predetermined levels as measured by said monitor. - View Dependent Claims (24, 25, 26)
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27. A method for controlling patient self-administration of fluid infusions comprising:
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monitoring patient conditions by connecting a capnography unit to the patient, wherein the capnography unit is capable of monitoring the concentration of carbon dioxide in the expired air of a patient;
connecting the capnography unit to an interface unit including a microprocessor and a user interface adapted to provide an interface with a user;
inputting patient condition limits into the interface unit;
comparing monitored patient conditions to patient condition limits in said interface and generating a signal indicative of said comparison;
connecting the patient to an infusion unit, wherein the infusion unit communicates with the interface unit, said infusion unit is capable of performing fluid infusion to the patient in accordance with infusion unit specific information;
requesting fluid infusions from the infusion unit by patient activation of the infusion unit;
performing fluid infusion with the infusion unit in accordance with a predetermined infusion protocol in response to said patient activation and in response to a signal from the interface unit representative of the monitored patient conditions being within said patient condition limits; and
disabling the infusion unit and terminating the fluid infusion in response to a signal from the interface unit representative of the monitored patient conditions being outside the patient condition limits. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A drug infusion pump for use with a container containing a particular drug, said pump comprising:
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a pump mechanism that causes the particular drug to be delivered to a patient from the container;
a programmable controller controlling the pump mechanism;
a monitor unit that monitors the expiration air of a patient to measure a selected component of that air, and that provides a measured value representative of the measured component;
a memory storing a drug library, the drug library containing a plurality of drug entries, there being associated with each drug entry a set of associated drug delivery parameters for configuring the drug infusion pump, the memory also storing the selected component of the patient'"'"'s expiration air, there being associated with the selected component a range of acceptable values;
a user interface enabling a user to program the programmable controller, said user interface comprising;
means for enabling the user to select a drug entry from the electronically loaded drug library; and
means for configuring the programmable controller with the set of drug delivery parameters associated with the selected drug entry;
wherein the programmable controller is configured to receive the measured value, compare the measured value to the range of acceptable values of the selected component, and to control the pump mechanism in accordance with the comparison. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A drug infusion pump for use with a container containing a given drug, said container including a machine readable label, the label specifying an identifier of the given drug and possibly other information about the given drug, said pump comprising:
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a pump mechanism which during operation causes the given drug to be delivered to a patient from the container;
a programmable controller controlling the pump mechanism;
a monitor unit that monitors the expiration air of a patient to measure a selected component of that air, and that provides a measured value representative of the measured component;
a memory storing a drug library, said drug library containing a plurality of drug entries, there being associated with each drug entry a set of associated drug delivery parameters for configuring the drug infusion pump, the memory also storing the selected component of the patient'"'"'s expiration air, there being associated with the selected component a range of acceptable values;
a label reader which during use reads the contents of the label on the container; and
means responsive to the label reader for identifying an entry in the drug library that corresponds to the given drug and configuring the programmable controller by using the set of drug delivery parameters associated with the identified entry from the drug library;
wherein the programmable controller is configured to receive the measured value, compare the measured value to the range of acceptable values of the selected component, and to control the pump mechanism in accordance with the comparison.
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Specification