System and method for guidance of anesthesia, analgesia and amnesia
First Claim
1. A method, comprising the steps of:
- Administering a plurality of interventional agents to a patient until the patient attains a predetermined plane of anesthesia;
Amplifying and digitizing brain waves of the patient before and after the administering step to generate a first set of digital data;
Amplifying and digitizing brain waves of the patient during a medical procedure to generate a second set of digital data;
Computing separate trajectories for at least two different indices of an anesthetic state of the patient during the medical procedure as a function of a comparison of the first and second sets of digital data, using a microprocessor, the indices including a Depth Index (DI), a Memory Index (MI), and a Pain Index (PI), wherein the DI corresponds to a depth of anesthesia of the patient, the PI corresponds to a sensitivity of the patient to pain and the MI corresponds to an ability of the patient to form and store memories; and
Controlling, using the microprocessor, delivery of an amount of at least one of the interventional agents as a function of the trajectories, wherein the interventional agents include at least one of anesthetic, analgesic and amnesic agents corresponding to at least one of the DI, MI, and PI trajectories.
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Accused Products
Abstract
Described is a system and method which includes the following steps. A plurality of interventional agents are administered to a patient until the patient attains a predetermined plane of anesthesia. Brain waves of the patient are amplified and digitized before and after the administering step to generate a first set of digital data. The brain waves of the patient are amplified and digitized during a medical procedure to generate a second set of digital data. Separate trajectories for at least two different indices of an anesthetic state of the patient are computed during the medical procedure as a function of a comparison of the first and second sets of digital data. The indices include a Depth Index (DI), a Memory Index (MI) and a Pain Index (PI). The DI corresponds to a depth of anesthesia of the patient, the PI corresponds to a sensitivity of the patient to pain and the MI corresponds to an ability of the patient to form and store memories.
15 Citations
28 Claims
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1. A method, comprising the steps of:
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Administering a plurality of interventional agents to a patient until the patient attains a predetermined plane of anesthesia; Amplifying and digitizing brain waves of the patient before and after the administering step to generate a first set of digital data; Amplifying and digitizing brain waves of the patient during a medical procedure to generate a second set of digital data; Computing separate trajectories for at least two different indices of an anesthetic state of the patient during the medical procedure as a function of a comparison of the first and second sets of digital data, using a microprocessor, the indices including a Depth Index (DI), a Memory Index (MI), and a Pain Index (PI), wherein the DI corresponds to a depth of anesthesia of the patient, the PI corresponds to a sensitivity of the patient to pain and the MI corresponds to an ability of the patient to form and store memories; and Controlling, using the microprocessor, delivery of an amount of at least one of the interventional agents as a function of the trajectories, wherein the interventional agents include at least one of anesthetic, analgesic and amnesic agents corresponding to at least one of the DI, MI, and PI trajectories. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system, comprising:
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a delivery arrangement administering a plurality of interventional agents to a patient; and a microprocessor analyzing digital brain wave data corresponding to brain waves of the patient, the microprocessor computing separate trajectories for at least two different indices of an anesthetic state of the patient as a function of the analysis of the digital brain wave data, the indices including a Depth Index (DI), a Memory Index (MI) and a Pain Index (PI), the DI corresponding to a depth of anesthesia of the patient, the PI corresponding to a sensitivity of the patient to pain and the MI corresponding to an ability of the patient to form and store memories, wherein the microprocessor controls an amount of at least one of the interventional agents as a function of the trajectories. - View Dependent Claims (14, 15, 16, 17)
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18. A device, comprising:
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a communication arrangement coupled to a delivery arrangement administering a plurality of interventional agents to a patient; and a microprocessor analyzing digital brain wave data corresponding to brain waves of the patient, the microprocessor computing separate trajectories for at least two different indices of an anesthetic state of the patient during the medical procedure as a function of the analysis of the digital brain wave data, the indices including a Depth Index (DI), a Memory Index (MI) and a Pain Index (PI), the DI corresponding to a depth of anesthesia of the patient, the PI corresponding to a sensitivity of the patient to pain and the MI corresponding to an ability of the patient to form and store memories, wherein the microprocessor generates a control signal as a function of the trajectories, the control signal being transmitted to the delivery arrangement via the communication arrangement to control an amount of at least one of the interventional agents delivered to the patient.
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19. A method, comprising the steps of;
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Amplifying and digitizing brain waves of a patient to generate a first set of digital data, the patient receiving a plurality of interventional agents; Computing separate trajectories for at least two different indices of an anesthetic state of the patient during the medical procedure as a function of a comparison of the first and second sets of digital data, using a microprocessor, the indices including a Depth Index (DI), a Memory Index (MI), and a Pain Index (PI), wherein the DI corresponds to a depth of anesthesia of the patient, the PI corresponds to a sensitivity of the patient to pain and the MI corresponds to an ability of the patient to form and store memories; and Controlling, using the microprocessor, delivery of the plurality of interventional agents correcting digression from the predetermined reference value for a corresponding one of the indices, the administration of each of the interventional agents being controlled based on the trajectory corresponding to the index. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification