System and method for optimizing control of PCA and PCEA system
First Claim
1. A system for optimizing control over a PCA device configured to deliver medication, comprising:
- a medication delivery request device with which a request signal for delivery of the medication is provided;
a physiological device configured to provide a physiological signal representative of physiological data;
a first controller that receives the physiological signal, processes the physiological signal and provides a first alarm signal according to a first rule;
a first alarm device that communicates the first alarm signal; and
a second controller, separate from the first controller, that receives the request signal, receives the physiological signal, processes the request signal and the physiological signal and controls the operation of the PCA device according to the processing to deliver medication in accordance with a second rule, wherein the second rule is different from the first rule;
wherein the second rule comprises a first limit and a second limit greater than the first limit;
wherein, if a value of the physiological signal falls below the second limit, then the second controller generates a second alarm signal;
wherein, if the value of the physiological signal falls below the first limit, then the second controller controls the PCA device to a non-delivery mode in which the PCA device does not deliver medication;
wherein the first rule is more sensitive to transient, short term physiological and electrical artifacts in the physiological signal than the second rule, thereby resulting in the second controller controlling the PCA device to the non-delivery mode less frequently than the first controller generating the first alarm signal according to the first rule.
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Abstract
In a patient controlled analgesia (PCA) system, physiological data is processed and alarms are provided by the controller of the physiological module sensing the data according to a first rule. The physiological data is also processed by a second, separate controller according to a second rule independent from the first controller. According to the second rule, the physiological data may be filtered, processed with physiological data and non-physiological data obtained from another source, such as a remote server, and the PCA delivery device controlled to prevent delivery of medication accordingly. The provided system of multiple processors and rules enables normal alarming by physiological sensor modules while the pausing or prevention of the PCA delivery is controlled by a separate controller. Through this means, not only are false pauses and alarms for PCA delivery reduced, but the normal alarms of the monitors are permitted to function normally.
162 Citations
24 Claims
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1. A system for optimizing control over a PCA device configured to deliver medication, comprising:
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a medication delivery request device with which a request signal for delivery of the medication is provided; a physiological device configured to provide a physiological signal representative of physiological data; a first controller that receives the physiological signal, processes the physiological signal and provides a first alarm signal according to a first rule; a first alarm device that communicates the first alarm signal; and a second controller, separate from the first controller, that receives the request signal, receives the physiological signal, processes the request signal and the physiological signal and controls the operation of the PCA device according to the processing to deliver medication in accordance with a second rule, wherein the second rule is different from the first rule; wherein the second rule comprises a first limit and a second limit greater than the first limit; wherein, if a value of the physiological signal falls below the second limit, then the second controller generates a second alarm signal; wherein, if the value of the physiological signal falls below the first limit, then the second controller controls the PCA device to a non-delivery mode in which the PCA device does not deliver medication; wherein the first rule is more sensitive to transient, short term physiological and electrical artifacts in the physiological signal than the second rule, thereby resulting in the second controller controlling the PCA device to the non-delivery mode less frequently than the first controller generating the first alarm signal according to the first rule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for optimizing control over a PCA device configured to deliver medication, comprising:
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receiving a medication request signal for delivery of the medication; receiving a physiological signal representative of physiological data; processing the physiological signal with a first controller and providing a first alarm signal according to a first rule; communicating the first alarm signal; and processing the request signal and the physiological signal with a second controller separately from the first controller and controlling the operation of the PCA device according to the processing to deliver medication in accordance with a second rule, wherein the second rule is different from the first rule;
wherein the second rule comprises a first limit and a second limit greater than the first limit;generating at the second controller, if a value of the physiological signal falls below the second limit, a second alarm signal; controlling by the second controller, if the value of the physiological signal falls below the first limit, the PCA device to a non-delivery mode in which the PCA device does not deliver medication; wherein the first rule is more sensitive to transient, short term physiological and electrical artifacts in the physiological signal than the second rule, thereby resulting in the second controller controlling the PCA device to the non-delivery mode less frequently than the first controller generating the first alarm signal according to the first rule. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification