Methods and systems for providing battery feedback to patient

• US 9,786,150 B2
• Filed: 04/15/2015
• Issued: 10/10/2017
• Est. Priority Date: 04/15/2014
• Status: Active Grant

• Current Assignee: TC1 LLC (Abbott Laboratories)
• Original Assignee: TCI, LLC (Allient, Inc.)
• Inventors: Kimball, Brian, Dague, Charles, Wu, W. Kevin
• Primary Examiner(s): Yacob, Sisay
• Application Number:
  US14/687,746
• Publication Number:
  US 20150294550A1
• Time in Patent Office: 909 Days
• CPC Class Codes: A61M 60/148 in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
• CPC Class Codes: A61M 60/178 drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
• CPC Class Codes: A61M 60/216 including a rotating member acting on the blood, e.g. impeller
• CPC Class Codes: A61M 60/422 the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
• CPC Class Codes: A61M 60/538 Regulation using real-time blood pump operational parameter data, e.g. motor current
• CPC Class Codes: A61M 60/585 User interfaces
• CPC Class Codes: A61M 60/814 Volutes
• CPC Class Codes: A61M 60/82 Magnetic bearings
• CPC Class Codes: A61M 60/857 Implantable blood tubes
• CPC Class Codes: A61M 60/863 Apex rings
• CPC Class Codes: A61M 60/88 Percutaneous cables
• CPC Class Codes: G08B 21/182 Level alarms, e.g. alarms responsive to variables exceeding a threshold

Abstract

A method for outputting a combined power source alarm for an implantable blood pump includes determining a status for each of first and second power sources of the blood pump. A combined power source alarm based on the statuses of the first and second power sources is outputted. A method for generating an alarm based on fault detections in a mechanically assisted circulation system includes processing a series of fault detection indications to classify a fault as active or inactive. An alarm is generated if the fault is active for more than a predetermined amount of time.

Claims

1. A method of outputting a combined power source alarm for an implantable blood pump, the method comprising:

determining a status of a first power source for the implantable blood pump assembly;

determining a status of a second power source for the implantable blood pump assembly, the second power source being different from the first power source; and

outputting a combined power source alarm that accounts for and consolidates the statuses of the first and second power sources,

wherein each of the status of the first power source and the status of the second power source is selected from;

(a) a first status indicative of a relative state of charge being between a first threshold and a full state of charge for the respective power source;

(b) a second status indicative of a relative state of charge being between the first threshold and a second threshold lower than the first threshold;

(c) a third status indicative of a relative state of charge being below the second threshold;

(d) a fourth status indicative of the power source being unknown; and

(e) a fifth status indicative of a power cable disconnect, and

wherein outputting the combined power source alarm comprises displaying a low power advisory alarm if;

the status of at least one of the first and second power sources is the second status and the status of each of the first and second power sources is the first or second status;

or

the status of one of the first and second power sources is the first status and the status of the other one of the first and second power sources is the third status.

2. The method of claim 1, wherein displaying the low power advisory alarm comprises repeatedly flashing an indicator light for at least one second on followed by at least one second off.

3. The method of claim 2, wherein the indicator light is yellow and diamond shaped.

4. The method of claim 1, further comprising repeatedly sounding an audio beep during the low power advisory alarm once every four or more seconds or until silenced via a user selection.

32. The method of claim 1, wherein the method is carried out by a control unit for the implantable blood pump.

45. The method of claim 1, wherein the combined power source alarm is one of:

(a) a low power advisory alarm, (b) a low power hazard alarm, (c) a power cable disconnect and low power advisory alarm, (d) a power cable disconnect and low power hazard alarm, and (e) a no external power and power cable disconnect alarm.

5. A method of outputting a combined power source alarm for an implantable blood pump, the method comprising:

determining a status of a first power source for the implantable blood pump assembly;

determining a status of a second power source for the implantable blood pump assembly, the second power source being different from the first power source; and

outputting a combined power source alarm that accounts for and consolidates the statuses of the first and second power sources,

wherein each of the status of the first power source and the status of the second power source is selected from;

(a) a first status indicative of a relative state of charge being between a first threshold and a full state of charge for the respective power source;

(b) a second status indicative of a relative state of charge being between the first threshold and a second threshold lower than the first threshold;

(c) a third status indicative of a relative state of charge being below the second threshold;

(d) a fourth status indicative of the power source being unknown; and

(e) a fifth status indicative of a power cable disconnect, and

wherein outputting the combined power source alarm comprises displaying a low power hazard alarm if the status of at least one of the first and second power sources is the third status and the status of each of the first and second power sources is the second or third status.

6. The method of claim 5, wherein displaying the low power hazard alarm comprises repeatedly flashing an indicator light for at least 0.25 seconds on followed by at least 0.25 seconds off.

7. The method of claim 6, wherein the indicator light is red.

8. The method of claim 5, further comprising sounding a continuous audio tone for a length of the low power hazard alarm or until the continuous audio tone is silenced via a user selection.

9. The method of claim 8, wherein the continuous audio tone is sounded a second time after being silenced via the user selection if the low power hazard alarm persists longer than a predetermined amount of time after the audio tone is silenced.

10. The method of claim 5, wherein the method is carried out by a control unit for the implantable blood pump.

11. The method of claim 5, wherein the combined power source alarm is one of:

(a) a low power advisory alarm, (b) a low power hazard alarm, (c) a power cable disconnect and low power advisory alarm, (d) a power cable disconnect and low power hazard alarm, and (e) a no external power and power cable disconnect alarm.

12. A method of outputting a combined power source alarm for an implantable blood pump, the method comprising:

determining a status of a first power source for the implantable blood pump assembly;

determining a status of a second power source for the implantable blood pump assembly, the second power source being different from the first power source; and

outputting a combined power source alarm that accounts for and consolidates the statuses of the first and second power sources,

wherein each of the status of the first power source and the status of the second power source is selected from;

(a) a first status indicative of a relative state of charge being between a first threshold and a full state of charge for the respective power source;

(b) a second status indicative of a relative state of charge being between the first threshold and a second threshold lower than the first threshold;

(c) a third status indicative of a relative state of charge being below the second threshold;

(d) a fourth status indicative of the power source being unknown; and

(e) a fifth status indicative of a power cable disconnect, and

wherein outputting the combined power source alarm comprises displaying a power cable disconnect and low power advisory alarm if;

(a) the status of one of the first and second power sources is the fourth or fifth status; and

(b) the status of the other one of the first and second power sources is the first status.

13. The method of claim 12, wherein displaying the power cable disconnect and low power advisory alarm comprises repeatedly flashing an indicator light for at least one second on followed by at least one second off.

14. The method of claim 13, wherein the indicator light is yellow and diamond shaped.

15. The method of claim 12, further comprising repeatedly sounding an audio beep during the power cable disconnect and low power advisory alarm once every four or more seconds or until silenced via a user selection.

16. The method of claim 12, wherein the method is carried out by a control unit for the implantable blood pump.

17. The method of claim 12, wherein the combined power source alarm is one of:

(a) a low power advisory alarm, (b) a low power hazard alarm, (c) a power cable disconnect and low power advisory alarm, (d) a power cable disconnect and low power hazard alarm, and (e) a no external power and power cable disconnect alarm.

18. A method of outputting a combined power source alarm for an implantable blood pump, the method comprising:

determining a status of a first power source for the implantable blood pump assembly;

determining a status of a second power source for the implantable blood pump assembly, the second power source being different from the first power source; and

outputting a combined power source alarm that accounts for and consolidates the statuses of the first and second power sources,

wherein each of the status of the first power source and the status of the second power source is selected from;

(a) a first status indicative of a relative state of charge being between a first threshold and a full state of charge for the respective power source;

(b) a second status indicative of a relative state of charge being between the first threshold and a second threshold lower than the first threshold;

(c) a third status indicative of a relative state of charge being below the second threshold;

(d) a fourth status indicative of the power source being unknown; and

(e) a fifth status indicative of a power cable disconnect, and

wherein outputting the combined power source alarm comprises displaying a power cable disconnect and low power hazard alarm if;

(a) the status at least one of the first and second power sources is the fourth or fifth status;

(b) the status of each of the first and second power sources is the second, third, fourth, or fifth status; and

(c) the status of each of the first and second power sources is not equal to the fifth status.

19. The method of claim 18, wherein displaying the power cable disconnect and low power hazard alarm comprises repeatedly flashing an indicator light for at least 0.25 seconds on followed by at least 0.25 seconds off.

20. The method of claim 19, wherein the indicator light is red.

21. The method of claim 18, further comprising sounding a continuous audio tone for a length of the power cable disconnect and low power hazard alarm or until the continuous audio tone is silenced via a user selection.

22. The method of claim 21, wherein the continuous audio tone is sounded a second time after being silenced via the user selection if the power cable disconnect and low power hazard alarm persists longer than a predetermined amount of time after the audio tone is silenced.

23. The method of claim 18, wherein the method is carried out by a control unit for the implantable blood pump.

24. The method of claim 18, wherein the combined power source alarm is one of:

(a) a low power advisory alarm, (b) a low power hazard alarm, (c) a power cable disconnect and low power advisory alarm, (d) a power cable disconnect and low power hazard alarm, and (e) a no external power and power cable disconnect alarm.

25. A method of outputting a combined power source alarm for an implantable blood pump, the method comprising:

determining a status of a first power source for the implantable blood pump assembly;

determining a status of a second power source for the implantable blood pump assembly, the second power source being different from the first power source; and

outputting a combined power source alarm that accounts for and consolidates the statuses of the first and second power sources,

wherein each of the status of the first power source and the status of the second power source is selected from;

(a) a first status indicative of a relative state of charge being between a first threshold and a full state of charge for the respective power source;

(b) a second status indicative of a relative state of charge being between the first threshold and a second threshold lower than the first threshold;

(c) a third status indicative of a relative state of charge being below the second threshold;

(d) a fourth status indicative of the power source being unknown; and

(e) a fifth status indicative of a power cable disconnect, and

wherein outputting the combined power source alarm comprises displaying a no external power and power cable disconnect alarm if the status of each of the first and second power sources is equal to the fifth status.

26. The method of claim 25, wherein displaying the no external power and power cable disconnect alarm comprises repeatedly flashing an indicator light for at least 0.25 seconds on followed by at least 0.25 seconds off.

27. The method of claim 26, wherein the indicator light is red.

28. The method of claim 26, further comprising sounding a continuous audio tone for a length of the no external power and power cable disconnect alarm or until the continuous audio tone is silenced via a user selection.

29. The method of claim 28, wherein the continuous audio tone is sounded a second time after being silenced via the user selection if the no external power and power cable disconnect alarm persists longer than a predetermined amount of time after the audio tone is silenced.

30. The method of claim 25, wherein the method is carried out by a control unit for the implantable blood pump.

31. The method of claim 25, wherein the combined power source alarm is one of:

(a) a low power advisory alarm, (b) a low power hazard alarm, (c) a power cable disconnect and low power advisory alarm, (d) a power cable disconnect and low power hazard alarm, and (e) a no external power and power cable disconnect alarm.

33. A method of generating an alarm based on fault detections in a mechanically assisted circulation (MAC) system, the method comprising:

receiving a series of indications from a subsystem of the MAC system indicative of whether a fault condition is being detected or not detected;

processing the series of indications to determine if each of a first subseries of indications at the end of the series of indications indicate a detection of the fault condition and the number of the first subseries equals or exceeds a predetermined soaking number for the fault;

in response to determining that each of the first subseries of the series of indications at the end of the series of indications each indicate a detection of the fault condition and the number of the first subseries equals or exceeds the predetermined set soaking number for the fault, designating the fault as being active;

processing the series of indications to determine if each of a second subseries of the series of indications at the end of the series of indications each indicate a non-detection of the fault condition and the number of the second subseries equals or exceeds a predetermined clear soaking number for the fault;

in response to determining that each of the second subseries of the series of indications at the end of the series of indications each indicate a non-detection of the fault condition and the number of the second subseries equals or exceeds the predetermined clear soaking number for the fault, designating the fault as being inactive;

outputting an alarm for the fault when the fault is designated as being active for at least a predetermined amount of time.

34. The method of claim 33, wherein the fault is designated as being one of active or inactive at any particular time.

35. The method of claim 33, wherein the set soaking number is from two to ten.

36. The method of claim 33, wherein the clear soaking number is from one to three.

37. The method of claim 33, wherein the clear soaking number is greater than the set soaking number.

38. The method of claim 33, wherein the clear soaking number is equal to the set soaking number.

39. The method of claim 33, wherein the clear soaking number is less than the set soaking number.

40. The method of claim 33, wherein the predetermined amount of time is in a range from one to fifteen seconds.

41. The method of claim 33, wherein the MAC system includes an implantable blood pump.

42. The method of claim 41, wherein the fault is with respect to one or more power sources for the implantable blood pump.

43. The method of claim 41, wherein the fault is with respect to the implantable blood pump.

44. A mechanically assisted circulation (MAC) system, comprising:

an implantable blood pump; and

a controller unit communicatively coupled to the blood pump, the control unit including one or more processors and a tangible memory storing non-transitory instructions that, when executed by the one or more processors, cause the one or more processors to;

determine a status of a first power source for the implantable blood pump assembly;

determine a status of a second power source for the implantable blood pump assembly, the second power source being different from the first power source; and

output a combined power source alarm that accounts for and consolidates the statuses of the first and second power sources,

wherein each of the status of the first power source and the status of the second power source is selected from;

(a) a first status indicative of a relative state of charge being between a first threshold and a full state of charge for the respective power source;

(b) a second status indicative of a relative state of charge being between the first threshold and a second threshold lower than the first threshold;

(c) a third status indicative of a relative state of charge being below the second threshold;

(d) a fourth status indicative of the power source being unknown; and

(e) a fifth status indicative of a power cable disconnect, and

wherein outputting the combined power source alarm comprises displaying a low power advisory alarm if;

the status of at least one of the first and second power sources is the second status and the status of each of the first and second power sources is the first or second status;

or

the status of one of the first and second power sources is the first status and the status of the other one of the first and second power sources is the third status.

46. A mechanically assisted circulation (MAC) system, comprising:

an implantable blood pump; and

a controller unit communicatively coupled to the blood pump, the control unit including one or more processors and a tangible memory storing non-transitory instructions that, when executed by the one or more processors, cause the one or more processors to;

determine a status of a first power source for the implantable blood pump assembly;

determine a status of a second power source for the implantable blood pump assembly, the second power source being different from the first power source; and

output a combined power source alarm that accounts for and consolidates the statuses of the first and second power sources,

wherein each of the status of the first power source and the status of the second power source is selected from;

(a) a first status indicative of a relative state of charge being between a first threshold and a full state of charge for the respective power source;

(b) a second status indicative of a relative state of charge being between the first threshold and a second threshold lower than the first threshold;

(c) a third status indicative of a relative state of charge being below the second threshold;

(d) a fourth status indicative of the power source being unknown; and

(e) a fifth status indicative of a power cable disconnect, and

wherein outputting the combined power source alarm comprises displaying a low power hazard alarm if the status of at least one of the first and second power sources is the third status and the status of each of the first and second power sources is the second or third status.

47. A mechanically assisted circulation (MAC) system, comprising:

an implantable blood pump; and

a controller unit communicatively coupled to the blood pump, the control unit including one or more processors and a tangible memory storing non-transitory instructions that, when executed by the one or more processors, cause the one or more processors to;

determine a status of a first power source for the implantable blood pump assembly;

determine a status of a second power source for the implantable blood pump assembly, the second power source being different from the first power source; and

output a combined power source alarm that accounts for and consolidates the statuses of the first and second power sources,

wherein each of the status of the first power source and the status of the second power source is selected from;

(a) a first status indicative of a relative state of charge being between a first threshold and a full state of charge for the respective power source;

(b) a second status indicative of a relative state of charge being between the first threshold and a second threshold lower than the first threshold;

(c) a third status indicative of a relative state of charge being below the second threshold;

(d) a fourth status indicative of the power source being unknown; and

(e) a fifth status indicative of a power cable disconnect, and

wherein outputting the combined power source alarm comprises displaying a power cable disconnect and low power advisory alarm if;

(a) the status of one of the first and second power sources is the fourth or fifth status; and

(b) the status of the other one of the first and second power sources is the first status.

48. A mechanically assisted circulation (MAC) system, comprising:

an implantable blood pump; and

a controller unit communicatively coupled to the blood pump, the control unit including one or more processors and a tangible memory storing non-transitory instructions that, when executed by the one or more processors, cause the one or more processors to;

determine a status of a first power source for the implantable blood pump assembly;

determine a status of a second power source for the implantable blood pump assembly, the second power source being different from the first power source; and

output a combined power source alarm that accounts for and consolidates the statuses of the first and second power sources,

wherein each of the status of the first power source and the status of the second power source is selected from;

(a) a first status indicative of a relative state of charge being between a first threshold and a full state of charge for the respective power source;

(b) a second status indicative of a relative state of charge being between the first threshold and a second threshold lower than the first threshold;

(c) a third status indicative of a relative state of charge being below the second threshold;

(d) a fourth status indicative of the power source being unknown; and

(e) a fifth status indicative of a power cable disconnect, and

wherein outputting the combined power source alarm comprises displaying a power cable disconnect and low power hazard alarm if;

(a) the status at least one of the first and second power sources is the fourth or fifth status;

(b) the status of each of the first and second power sources is the second, third, fourth, or fifth status; and

(c) the status of each of the first and second power sources is not equal to the fifth status.

49. A mechanically assisted circulation (MAC) system, comprising:

an implantable blood pump; and

a controller unit communicatively coupled to the blood pump, the control unit including one or more processors and a tangible memory storing non-transitory instructions that, when executed by the one or more processors, cause the one or more processors to;

determine a status of a first power source for the implantable blood pump assembly;

determine a status of a second power source for the implantable blood pump assembly, the second power source being different from the first power source; and

output a combined power source alarm that accounts for and consolidates the statuses of the first and second power sources,

wherein each of the status of the first power source and the status of the second power source is selected from;

(a) a first status indicative of a relative state of charge being between a first threshold and a full state of charge for the respective power source;

(b) a second status indicative of a relative state of charge being between the first threshold and a second threshold lower than the first threshold;

(c) a third status indicative of a relative state of charge being below the second threshold;

(d) a fourth status indicative of the power source being unknown; and

(e) a fifth status indicative of a power cable disconnect, and

wherein outputting the combined power source alarm comprises displaying a no external power and power cable disconnect alarm if the status of each of the first and second power sources is equal to the fifth status.