PATIENT FEEDBACK STIMULATION LOOP

• US 20150257698A1
• Filed: 03/17/2014
• Published: 09/17/2015
• Est. Priority Date: 03/17/2014
• Status: Abandoned Application

• Current Assignee: Oridion Medical 1987 Limited (Medtronic Plc)
• Original Assignee: Oridion Medical 1987 Limited (Medtronic Plc)
• Inventors: Colman, Joshua Lewis, Spratt, Gregory Keith
• Application Number:
  US14/216,090
• Publication Number:
  US 20150257698A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/0833 Measuring rate of oxygen consumption
• CPC Class Codes: A61B 5/0836 Measuring rate of CO2 production
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/369 Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/4812 Detecting sleep stages or cycles
• CPC Class Codes: A61B 5/4821 Determining level or depth of anaesthesia A61B5/1106 takes precedence
• CPC Class Codes: A61B 5/4836 Diagnosis combined with treatment in closed-loop systems or methods A61B5/0036 takes precedence
• CPC Class Codes: A61B 5/486 Bio-feedback A61B5/375 takes precedence
• CPC Class Codes: A61B 5/7246 using correlation, e.g. template matching or determination of similarity
• CPC Class Codes: A61B 5/7264 Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems neural networks per se G06N3/00; expert systems per se G06N5/00
• CPC Class Codes: A61B 5/7275 Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor
• CPC Class Codes: A61B 5/7278 Artificial waveform generation or derivation, e.g. synthesising signals from measured signals A61B5/327 takes precedence
• CPC Class Codes: A61B 5/741 using synthesised speech
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61B 5/7455 characterised by tactile indication, e.g. vibration or electrical stimulation
• CPC Class Codes: A61B 5/746 : Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms alarms per se G08B
• CPC Class Codes: G16H 20/30 : relating to physical therapies or activities, e.g. physiotherapy, acupressure or exercising

Abstract

Control logic, device and method including same configured to receive at least one measured medical parameter of a patient; compare the at least one measured medical parameter to a predetermined first threshold value and to a predetermined second threshold value; trigger stimulation of the patient when the at least one measured medical parameter crosses the first threshold value; and trigger an alarm when the at least one measured medical parameter crosses the second threshold value.

Claims

1. A control logic configured to:

receive at least one measured medical parameter of a patient;

compare said at least one measured medical parameter to a predetermined first threshold value and to a predetermined second threshold value;

trigger stimulation of the patient when said at least one measured medical parameter crosses said first threshold value; and

trigger an alarm when said at least one measured medical parameter crosses said second threshold value.

2. The control logic of claim 1, wherein said stimulation triggers said patient to breathe.

3. The control logic of claim 1, wherein said at least one measured medical parameter comprises a CO₂ related parameter, respiration rate (RR), an oxygen related parameter, heart rate (HR), an electrocardiogram (ECG), an encephalogram (EEG), blood pressure, spirometry, level of consciousness, level of sedation or any combination thereof.

4. The control logic of claim 2, wherein said CO₂ related parameter comprises a CO₂ waveform related parameter, an expired air CO₂ concentration, respiratory rate or any combination thereof.

5. The control logic of claim 1, wherein said at least one measured medical parameter comprises an algorithmically-derived index of multiple parameters.

6. The control logic of claim 4, wherein said algorithmically-derived index of multiple parameters is computed by:

(a) characterizing a first measured patient parameter based on a comparison of the first measured patient parameter against a first reference value;

(b) characterizing a second measured patient parameter based on a comparison of the second measured patient parameter against a second reference value; and

(c) computing the index value based on values associated with each of the characterized first and second measured patient parameters.

7. The control logic of claim 5, wherein said first measured patient parameter comprise a CO₂ related parameter, respiration rate (RR), an oxygen related parameter, heart rate (HR), an electrocardiogram (ECG), an encephalogram (EEG), blood pressure, spirometry, level of consciousness, level of sedation or any combination thereof.

8. The control logic of claim 5, wherein said second measured patient parameter comprise CO₂ related parameter, respiration rate (RR), an O₂ related parameter, heart rate (HR), an electrocardiogram (ECG), an encephalogram (EEG), blood pressure, spirometry, level of consciousness, level of sedation or any combination thereof.

9. The control logic of claim 1, wherein said at least one measured medical parameter is user selectable.

10. The control logic of claim 1, wherein said first threshold value is tighter than said second threshold value.

11. The control logic of claim 1, wherein said first and second threshold values are user selectable.

12. The control logic of claim 1, wherein said stimulation comprises visual stimulation, audible stimulation, physical stimulation or combinations thereof.

13. The control logic of claim 7, wherein said visual stimulation comprises a flashing light;

wherein said audible stimulation comprises a vocal instruction and wherein said physical stimulation comprises a vibration of a device attached to said patient.

14. The control logic of claim 1, wherein said stimulation increases the level of consciousness of the subject and/or reduces the amount of non-actionable alarms.

15. The control logic of claim 1, wherein said control logic is further configured to identify deterioration, lack of change or improvement of said at least one measured medical parameter within a predetermined period of time after said stimulation.

16. The control logic of claim 10, wherein said control logic is further adapted to enhance said stimulation when no improvement in said at least one measured medical parameter is observed.

17. The control logic of claim 10, wherein said control logic is further adapted to trigger said alarm when no improvement in said at least one measured medical parameter is observed in response to the stimulation.

18. The control logic of claim 10, wherein said control logic is further configured to store data including said measured medical parameter, changes in said measured medical parameter, type of stimulation applied, intensity of stimulation, number of stimulation cycles or combinations thereof.

19. A medical device comprising:

at least one sensor configured to measure at least one medical parameter of a patient; and

a control logic configured to;

compare the at least one measured medical parameter to a predetermined first threshold value and to a predetermined second threshold value;

trigger stimulation of the patient when said at least one measured medical parameter crosses said first threshold value; and

trigger an alarm when said at least one measured medical parameter crosses said second threshold value.

20. A method for reducing non-actionable alarms, the method comprising:

receiving at least one measured medical parameter of a patient;

comparing the at least one measured medical parameter to a predetermined first threshold value and to a predetermined second threshold value;

triggering stimulation of the patient when the at least one measured medical parameter crosses the first threshold value; and

triggering an alarm when the at least one measured medical parameter crosses the second threshold value.