Therapy system including multiple posture sensors

Patent metadata

Field	Value
Publication number	US-9717846-B2
Application number	US-201213561706-A
Country	US
Kind code	B2
Filing date	Jul 30, 2012
Priority date	Apr 30, 2009
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

Posture-responsive therapy is delivered by the medical system based on posture state input from only one of multiple posture sensors at any given time. An example implantable medical system includes a first posture sensor and a second sensor. A processor controls therapy delivery to the patient based on at least one of a patient posture state or a patient activity level determined based on input from only one of the first or second posture sensors. In some examples, one of multiple posture sensors of an implantable posture-responsive medical system is used to automatically reorient another posture sensor (of the system), which has become disoriented. The disoriented posture sensor may be automatically reoriented for one or more posture states at a time.

First claim

The invention claimed is:

1. A method comprising:
associating, via one or more processors of at least one of a medical device or a programmer for the medical device, each of multiple posture sensors with one or more posture states, wherein at least one of the posture states is associated with fewer than all of the multiple posture sensors;
upon a patient assuming a posture state, selectively receiving, via the one or more processors of the at least one of the medical device or the programmer for the medical device, output from one or more of the multiple posture sensors associated with the assumed posture state for use in determining the assumed posture state;
determining, via the one or more processors of the at least one of the medical device or the programmer for the medical device, the assumed posture state based on the received output of the one or more posture sensors associated with the assumed posture state; and
controlling, via the one or more processors of the at least one of the medical device or the programmer for the medical device, the medical device to deliver therapy to the patient based on the determined posture state.

2. The method of claim 1 , wherein associating, via the one or more processors, each of the multiple posture sensors with one or more posture states comprises associating each of the multiple posture sensors with one or more posture states based on effectiveness of each sensor in sensing the one or more posture states.

3. The method of claim 1 , wherein associating, via the one or more processors, each of multiple posture sensors with one or more posture states comprises associating each of multiple posture sensors with one or more posture states based on effectiveness of each sensor in sensing one or more activity levels.

4. The method of claim 1 , wherein associating, via the one or more processors, each of multiple posture sensors with one or more posture states comprises associating each of multiple posture sensors with one or more posture states based on a location of each sensor relative to the patient.

5. The method of claim 1 , further comprising:
determining, via the one or more processors, that one of the associated ones of the posture sensors has become disoriented; and
deactivating the disoriented one of the posture sensors.

6. The method of claim 5 , further comprising receiving, via the one or more processors, output of a different one of the posture sensors for use instead of the disoriented one of the posture sensors.

7. The method of claim 1 , wherein determining the posture state based on the received output of the one or more posture sensors comprises confirming the posture state based on the received output of the one or more posture sensors.

8. The method of claim 1 , wherein selectively receiving output from one or more associated ones of the posture sensors comprises selecting, via the one or more processors, the one or more associated ones of the posture sensors based on a signal from one of the multiple posture sensors.

9. The method of claim 1 , wherein associating, via the one or more processors, each of multiple posture sensors with one or more posture states comprises automatically comparing posture states detected by each of the multiple sensors.

10. The method of claim 9 , wherein associating, via the one or more processors, each of multiple posture sensors with one or more posture states comprises automatically comparing efficacy of the delivered therapy resulting from posture states detected by each of the multiple sensors.

11. The method of claim 1 , further comprising receiving user input indicating one or more posture states to be associated with a posture sensor.

12. A system, comprising:
multiple posture sensors adapted to be disposed relative to a patient; and
one or more processors of at least one of a medical device or a programmer of the medical device, the one or more processors configured to:
associate each of the multiple posture sensors with one or more posture states, wherein fewer than all of the posture sensors are associated with at least one of the posture states,
upon the patient assuming a posture state, selectively receive input from one or more of the posture sensors associated with the assumed posture state,
determine the posture state based on the received input from the one or more posture sensors, and
control the medical device to deliver therapy to the patient based on the determined posture state.

13. The system of claim 12 , wherein the one or more processors are configured to associate each of the multiple posture sensors with one or more posture states based on effectiveness of each sensor in sensing one or more postures.

14. The system of claim 12 , wherein the one or more processors are configured to associate each of the multiple posture sensors with one or more posture states based on effectiveness of each sensor in sensing one or more activity levels.

15. The system of claim 12 , wherein the one or more processors are configured to associate each of the multiple posture sensors with one or more posture states based on a location of each sensor relative to the patient.

16. The system of claim 12 , wherein the one or more processors are configured to determine that an associated one of the posture sensors has become disoriented and to deactivate the disoriented posture sensor.

17. The system of claim 16 , wherein the one or more processors are configured to receive input from a different one of the posture sensors for use instead of the disoriented posture sensor.

18. The system of claim 12 , wherein the one or more processors are configured to selectively receive input from one or more associated ones of the posture sensors based on a signal from one of the multiple posture sensors.

19. The system of claim 12 , wherein the one or more processors are configured to associate each of multiple posture sensors with one or more posture states by comparing posture states detected by each of the multiple sensors.

20. The system of claim 12 , wherein the one or more processors are configured to associate each of multiple posture sensors with one or more posture states by comparing efficacy of the delivered therapy resulting from posture states detected by each of the multiple sensors.

21. The system of claim 12 , further comprising a user interface configured to receive user input indicating one or more posture states to be associated with a posture sensor.

22. The system of claim 12 , further comprising the medical device that comprises at least one of the one or more processors.

23. The system of claim 12 , further comprising a programmer that comprises at least one of the one or more processors.

24. A non-transitory storage medium to store instructions executable by a processor of a programmer or a medical device to cause the processor to:
associate each of multiple posture sensors with one or more posture states, wherein at least one of the posture states is associated with fewer than all of the multiple posture sensors;
upon a patient assuming a posture state, to selectively receive output of one or more of the multiple posture sensors associated with the assumed posture state;
determine the posture state based on the received output of the one or more posture sensors; and
control the medical device to deliver therapy to the patient based on the determined posture state.

25. A medical system, comprising:
multipl

Assignees

• Skelton Dennis M
• Davis Jon P
• Miesel Keith A
• Denison Timothy J
• Medtronic Inc

Inventors

• Skelton Dennis M
• Davis Jon P
• Miesel Keith A
• Denison Timothy J

Classifications

• A61M2210/1078

  Urinary tract · CPC title

• A61B5/1116

  Determining posture transitions · CPC title

• A61B5/11

  Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb {(A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721)} · CPC title

• A61B5/4836

  Diagnosis combined with treatment in closed-loop systems or methods (A61B5/0036 takes precedence) · CPC title

• A61N1/3605

  Implantable neurostimulators for stimulating central or peripheral nerve system · CPC title