Methods and systems for reducing interference in stimulation treatment

• US 9,669,226 B2
• Filed: 09/07/2010
• Issued: 06/06/2017
• Est. Priority Date: 09/07/2010
• Status: Active Grant

• Current Assignee: DJO LLC (Enovis Corp.)
• Original Assignee: EMPI Incorporated (Enovis Corp.)
• Inventors: Fontaine, Nicolas, Baumgartner, Flavien, Guex, Steve
• Primary Examiner(s): Moran, Edward
• Assistant Examiner(s): So, Elizabeth K
• Application Number:
  US12/876,461
• Publication Number:
  US 20120059436A1
• Time in Patent Office: 2,464 Days
• CPC Class Codes: A61N 1/3603 Control systems
• CPC Class Codes: A61N 1/37 Monitoring; Protecting
• CPC Class Codes: A61N 1/3702 Physiological parameters A61N1/365 takes precedence; evoked response A61N1/371
• CPC Class Codes: A61N 1/37252 Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data
• CPC Class Codes: A61N 1/37264 Changing the program; Upgrading firmware
• CPC Class Codes: A61N 1/37288 Communication to several implantable medical devices within one patient

Abstract

Systems and methods are provided for reducing stimulation interference between two stimulation modules positioned on a user'"'"'s body, which may be used in stimulation systems without a central treatment controller. Systems and methods are also provided for stimulation treatment using multiple independent stimulators wirelessly managed by a remote management device.

Claims

1. A method for reducing interference between a first stimulation program comprising a succession of stimulation pulses generated by a first transducer of a first device applied at a first body site and a second stimulation program comprising a succession of stimulation pulses generated by a second transducer of a second device applied at a second body site, the method comprising:

monitoring the first body site using the first transducer during a first detection period for a signal indicative of a stimulation pulse of the second stimulation program generated by the second transducer;

when a signal indicative of a stimulation pulse of the second stimulation program generated by the second transducer is detected at the first body site using the first transducer during the first detection period, delaying for a first delay period the generation of a stimulation pulse of the first stimulation program by the first transducer, and at the end of the first delay period, generating a stimulation pulse of the first stimulation program using the first transducer; and

when a signal indicative of a stimulation pulse of the second stimulation program generated by the second transducer is not detected at the first body site using the first transducer during the first detection period, generating a stimulation pulse of the first stimulation program using the first transducer.

2. The method of claim 1, wherein monitoring the first body site is performed at pre-determined time intervals.

3. The method of claim 1, wherein the first detection period comprises a first pre-determined time period.

4. The method of claim 1, wherein the first delay period comprises a time period with a first random duration.

5. The method of claim 4, wherein the first random duration is selected from between a lower duration limit and an upper duration limit.

6. The method of claim 1, wherein a signal indicative of a stimulation pulse generated with the second transducer comprises a signal having an intensity exceeding a threshold.

7. The method of claim 1, further comprising incrementing a retry counter in response to the delaying.

8. The method of claim 7, further comprising triggering an electronic indicator when the retry counter reaches a retry limit.

9. The method of claim 1, further comprising generating a marking pulse with the first transducer prior to monitoring the first body site during the first detection period.

10. The method of claim 9, wherein the marking pulse signifies a priority level of the first stimulation program to be delivered by the first transducer.

11. The method of claim 1, further comprising:

detecting a marking pulse during the first detection period at the first body site by the first transducer; and

identifying a priority level of the second stimulation program to be delivered by the second transducer in response to detecting the signal indicative of the marking pulse generated by the second transducer.

12. The method of claim 11, delaying for a first delay period the generation of a stimulation pulse of the first stimulation program by the first transducer, wherein the duration of the first delay period is based at least in part on the identified priority level of the second stimulation program to be delivered by the second transducer.

13. The method of claim 1, further comprising:

monitoring the second body site during a second detection period using the second transducer, and

when a signal is detected by the second transducer indicative of a stimulation pulse of the first stimulation program generated by the first transducer, registering a positive body site contact condition for the second transducer.

14. The method of claim 13, wherein registering a positive body site contact condition for the second transducer occurs prior to generating a stimulation pulse with the second transducer.

15. The method of claim 1, further comprising:

monitoring the second body site, using the second transducer, for a second detection period;

when, during the second detection period, a signal is detected by the second transducer indicative of a marking pulse or a stimulation pulse generated by the first transducer, delaying for a second delay period before generating a stimulation pulse with the second transducer; and

when, during the second detection period, a signal is not detected indicative of a marking pulse or a stimulation pulse generated by the first transducer, generating a second stimulation pulse with the second transducer.

16. The method of claim 15, wherein monitoring the first body site is performed at first pre-determined time intervals and monitoring the second body site is performed at second pre-determined time intervals.

17. The method of claim 15, wherein the second delay period is different from the first delay period.

18. The method of claim 15, further comprising:

generating a marking pulse with the first transducer prior to monitoring the first body site using the first transducer for the first detection period; and

generating a marking pulse with the second transducer prior to monitoring the second body site using the second transducer for the second detection period.

19. The method of claim 15, wherein one or more additional transducers are configured to be applied at respectively one or more additional body sites, the method further comprising

monitoring the one or more additional body sites for a detection period;

and

during the detection period,

when a signal is detected indicative of a marking pulse or a stimulation pulse generated by at least one of the first and second transducers, delaying for a delay period before generating a stimulation pulse with at least one of the one or more additional transducers, and

otherwise, generating a stimulation pulse with at least one of the one or more additional transducers.

20. The method of claim 1, wherein first and second stimulation clocks are operatively coupled to the first and second transducers, respectfully, the method further comprising:

wirelessly receiving a communication synchronization signal; and

,

in response to receiving the communication synchronization signal, adjusting at least one of the first and second stimulation clocks to synchronize the first and second stimulation clocks.

21. The method of claim 20, wherein the step of adjusting a stimulation clock is performed repeatedly, and wherein a plurality of communication synchronization signals are received between successive stimulation clock adjustments.

22. The method of claim 21, wherein the number of communication synchronization signals received between successive stimulation clock adjustments is based at least in part on a frequency of stimulation pulses generated by the first transducer.

23. A method for delivering a first stimulation program with a first electrostimulation device that reduces interference with at least one additional stimulation program delivered by at least one additional electrostimulation device, each stimulation program comprising a succession of stimulation pulses, a first transducer of the first electrostimulation device applied at a first body site, and at least one additional transducer of the at least one additional electrostimulation device applied to at least one additional body site separate from the first body site, the method comprising:

prior to generating a stimulation pulse with the first transducer, monitoring the first body site with the first transducer during a first detection period for a signal indicative of a stimulation pulse generated by the additional transducer of the additional electrostimulation device;

when a signal indicative of a stimulation pulse is detected by the first transducer during the first detection period,

initiating a delay period for the first transducer that postpones the first transducer from generating a stimulation pulse;

upon completion of the delay period, monitoring the first body site with the first transducer during an additional detection period for a signal indicative of a stimulation pulse generated by the additional transducer of the additional electrostimulation device; and

repeating said initiating a delay period and said monitoring the first body site with the first transducer during the additional detection period until a signal indicative of a stimulation pulse generated by the additional transducer of the additional electrostimulation device is not detected during the additional detection period or a retry limit of a retry counter is reached; and

when a signal indicative of a stimulation pulse generated by the additional transducer of the additional electrostimulation device is not detected during the first detection period or an additional detection period, generating the stimulation pulse with the first transducer.

24. The method of claim 23, wherein a duration of the delay period for the first transducer is determined based at least in part on characteristics of the signal indicative of a stimulation pulse is detected by the first transducer.

25. The method of claim 23, wherein a duration of the delay period for the first transducer is different than a duration of a delay period for the additional transducer of the additional electro stimulation device.

26. The method of claim 23, wherein, said repeating further comprises:

incrementing the retry counter; and

stopping said repeating when the retry limit of the retry counter is reached.

27. The method of claim 26, wherein the retry limit is determined at least in part based on a therapeutically-acceptable variation of the first stimulation program.

28. The method of claim 23, wherein, when a signal indicative of a stimulation pulse is detected by the first transducer during the first detection period, said initiating a delay period for the first transducer occurs upon completion of the first detection.

29. The method of claim 28, wherein, when more than one signal indicative of a stimulation pulse is detected by the first transducer during the first detection period, a duration of the delay period for the first transducer is increased.