Method and apparatus to control drug therapy dosages in an implantable pump
First Claim
1. In an automatic drug therapy delivery system capable of being implanted into a patient, the system capable of being remotely programmed by radio frequency signals, the drug therapy system for delivering a bolus of drug to the patient in response to a patient-originated stimulus, the automatic drug therapy delivery system including a programmable controller having at least one input port through which signals from the patient are received by the controller and having at least one programmable memory location, a method of limiting the amount of patient-requested drug delivered to the patient comprised of the steps of:
- (a) programming at least one dose infusion characteristic value into the programmable memory location using a radio frequency signal;
(b) delivering a bolus of a drug to the patient in response to an input signal received by the programmable controller upon the determination of the programmable controller that the bolus is compliant with the dose infusion characteristic;
(c) determining the amount of drug delivered to a patient;
(d) determining whether there exists a risk of overdosage or underdosage of the drug therapy; and
(e) if a risk of overdosage or underdosage is determined, notifying the patient.
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Accused Products
Abstract
An implantable drug infusion pump for delivering drug therapy to a patient and which also permits a patient to deliver or self-administer an additional bolus, reduces the likelihood of over dosage or under dosage by drug dosage characteristic limitations programmed into a microprocessor memory. The dose limits define the maximum and minimum amount of drug to be delivered per unit time or otherwise, reducing the likelihood that a patient may inadvertently or deliberately interfere with a treatment regimen.
42 Citations
21 Claims
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1. In an automatic drug therapy delivery system capable of being implanted into a patient, the system capable of being remotely programmed by radio frequency signals, the drug therapy system for delivering a bolus of drug to the patient in response to a patient-originated stimulus, the automatic drug therapy delivery system including a programmable controller having at least one input port through which signals from the patient are received by the controller and having at least one programmable memory location, a method of limiting the amount of patient-requested drug delivered to the patient comprised of the steps of:
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(a) programming at least one dose infusion characteristic value into the programmable memory location using a radio frequency signal;
(b) delivering a bolus of a drug to the patient in response to an input signal received by the programmable controller upon the determination of the programmable controller that the bolus is compliant with the dose infusion characteristic;
(c) determining the amount of drug delivered to a patient;
(d) determining whether there exists a risk of overdosage or underdosage of the drug therapy; and
(e) if a risk of overdosage or underdosage is determined, notifying the patient. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computer-readable medium having computer-executable instructions for performing steps comprising of:
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(a) storing historical base rates and bolus drug infusion rates for an implantable drug delivery device;
(b) comparing the stored historical base rates and bolus drug infusion rates with prescribed dosage rate limits; and
(c) if the compared rates indicate an overdosage or underdosage situation, then notifying the patient of the underdosage or overdosage conditions.
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8. A method of providing controlled treatment therapy to a patient using an implantable pump, comprising the steps of:
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(a) receiving from a health care provider a set of drug dosage limit information describing at least one drug therapy dosage limit;
(b) receiving from the patient drug delivery instructions describing an amount of drug to be delivered;
(c) storing in memory historical information relating to the amount of drug delivered to the patient; and
(d) displaying feedback in the form of a notification mechanism if the drug delivery approaches the drug therapy dosage limit. - View Dependent Claims (9, 10, 11)
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12. A controller in communication with an implantable drug delivery device for delivering at least one drug to a patient, the controller comprising in combination:
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(a) an input for receiving drug usage information and drug dosage limit information;
(b) a memory for storing therein the drug usage information and the drug dosage limit information; and
(c) a drug therapy program determining whether the drug information has reached the drug dosage limit information, and if so, notifying the patient of the condition. - View Dependent Claims (13, 14, 15, 16)
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17. A controller in communication with an implantable drug delivery device for delivering at least one drug to a patient, the controller comprising in combination:
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(a) an input for receiving drug usage information and drug dosage limit information;
(b) a memory for storing therein the drug usage information and the drug dosage limit information; and
(c) a drug therapy program determining whether a drug delivery rate may be adjusted based on the drug usage information and the drug dosage limit information, and if so, notifying the patient of the condition. - View Dependent Claims (18, 19, 20)
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21. A computer-readable medium having computer-executable instructions for performing steps comprising of:
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(a) storing historical base rates and bolus drug infusion rates for an implantable drug delivery device;
(b) comparing the stored historical base rates and bolus drug infusion rates with prescribed dosage rate limits; and
(c) if the compared rates indicate that drug delivery rate may be adjusted notifying the patient of the condition.
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Specification