Device longevity prediction for a device having variable energy consumption

• US 9,242,110 B2
• Filed: 08/03/2015
• Issued: 01/26/2016
• Est. Priority Date: 04/14/2011
• Status: Active Grant

• Current Assignee: LivaNova USA, Inc. (LivaNova Plc)
• Original Assignee: Cyberonics, Inc
• Inventors: Colborn, John C.
• Primary Examiner(s): Gedeon, Brian T
• Assistant Examiner(s): TEJANI, ANKIT D
• Application Number:
  US14/817,073
• Publication Number:
  US 20150335899A1
• Time in Patent Office: 176 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61N 1/36053 adapted for vagal stimulation A61N1/36114 takes precedence
• CPC Class Codes: A61N 1/36064 Epilepsy
• CPC Class Codes: A61N 1/36114 Cardiac control, e.g. by vagal stimulation stimulating the heart A61N1/362
• CPC Class Codes: A61N 1/36135 using physiological parameters
• CPC Class Codes: A61N 1/36139 with automatic adjustment
• CPC Class Codes: A61N 1/36146 specified by the stimulation parameters
• CPC Class Codes: A61N 1/37235 Aspects of the external programmer
• CPC Class Codes: A61N 1/37247 User interfaces, e.g. input or presentation means
• CPC Class Codes: A61N 1/37264 Changing the program; Upgrading firmware
• CPC Class Codes: A61N 1/378 Electrical supply

Abstract

A system and method for estimating the longevity of an implantable medical device (IMD). In one embodiment of a method for estimating a life of a power source of an implantable medical device, a first life estimate of the power source is determined based on a first open-loop value corresponding to an open-loop parameter for open-loop therapy delivery, a first closed loop value corresponding to a closed-loop parameter for closed-loop therapy delivery, and prior usage data corresponding to prior therapy delivery. The first life estimate of the power source is displayed. The first life estimate displayed includes a first open-loop portion associated with open-loop therapy delivery and a first closed-loop portion associated with closed-loop therapy delivery.

Claims

1. A system for estimating a life of a power source of an implantable medical device (IMD), the system comprising:

a therapy logic, wherein the therapy logic provides;

an open-loop stimulation therapy; and

a closed-loop stimulation therapy, wherein the closed-loop stimulation therapy comprises at least one of;

a patient initiated stimulation therapy; and

an event detection stimulation therapy;

a detection logic, wherein the detection logic;

detects a change in one or more body parameters;

detects a patient input; and

triggers a change from the open-loop stimulation to the closed loop stimulation therapy based upon a detection of either a change in one or more body parameter or a patient input; and

a control device, wherein the control device;

calculates an open-loop life estimate of the power source, wherein the open-loop life estimate is based upon a set of open-loop stimulation parameters;

calculates a closed-loop charge consumption, wherein the closed-loop charge consumption is based upon a set of closed loop stimulation parameters; and

provides a first operable life estimate, wherein the first operable life estimate comprises a difference resulting from subtracting the closed-loop charge consumption from the open-loop life estimate.

2. The system of claim 1, wherein the control device is configured to update the first operable life estimate based on changing a parameter value corresponding to the open-loop therapy.

3. The system of claim 1 further comprising a communication logic, wherein the communication logic is configured to retrieve control information from the IMD and to provide the estimate of operable life to an external device.

4. The system of claim 1, wherein at least one of the open-loop stimulation parameters comprises at least one of:

a time period;

a duty cycle, wherein the duty cycle comprises a ratio of an on-time to a combination of the on-time and an off-time;

a current magnitude;

a pulse width;

a frequency; and

burst duration.

5. The system of claim 1, wherein at least one of the closed-loop stimulation parameters comprises at least one of:

a time period;

a duty cycle, wherein the duty cycle comprises a ratio of an on-time to a combination of the on-time and an off-time;

a current magnitude;

a pulse width;

a frequency; and

burst duration.

6. The system of claim 1, wherein the detection logic specifies a detection level associated with each of the one or more body parameters.

7. The system of claim 1, wherein the estimate of operable life represents the entire life of the power source.

8. The system of claim 1, wherein the control device is further configured to store a plurality of operable life estimates.

9. The system of claim 1, wherein the control device is configured to update the first operable life estimate based on changing a parameter value corresponding to the closed-loop therapy.

10. A method for estimating a life of a power source of an implantable medical device (IMD), the method comprising:

providing;

an open-loop stimulation therapy; and

a closed-loop stimulation therapy, wherein the closed-loop stimulation therapy comprises at least one of;

a patient initiated stimulation therapy; and

an event detection stimulation therapy;

detecting;

a change in one or more body parameters; and

a patient input;

triggering a change from the open-loop stimulation to the closed loop stimulation therapy based upon a detection of either a change in one or more body parameter or a patient input; and

calculating an open-loop life estimate of the power source, wherein the open-loop life estimate is based upon a set of open-loop stimulation parameters;

calculating a closed-loop charge consumption, wherein the closed-loop charge consumption is based upon a set of closed loop stimulation parameters; and

providing a first operable life estimate, wherein the first operable life estimate comprises a difference resulting from subtracting the closed-loop charge consumption from the open-loop life estimate.

11. The method of claim 10 further comprising updating the first operable life estimate based on changing a parameter value corresponding to the open-loop therapy.

12. The method of claim 10 further comprising updating the first operable life estimate based on changing a parameter value corresponding to the closed-loop therapy.

13. The method of claim 10 further comprising a providing the first operable life estimate to an external device.

14. The method of claim 10, wherein at least one of the open-loop stimulation parameters comprises at least one of:

a time period;

a duty cycle, wherein the duty cycle comprises a ratio of an on-time to a combination of the on-time and an off-time;

a current magnitude;

a pulse width;

a frequency; and

burst duration.

15. The method of claim 10, wherein at least one of the closed-loop stimulation parameters comprises at least one of:

a time period;

a duty cycle, wherein the duty cycle comprises a ratio of an on-time to a combination of the on-time and an off-time;

a current magnitude;

a pulse width;

a frequency; and

burst duration.

16. The method of claim 10 further comprises specifying a detection level associated with each of the one or more body parameters.

17. The method of claim 10, wherein the first operable life estimate represents the entire life of the power source.

18. The method of claim 10 further comprising store a plurality of operable life estimates.